JP2001088856A - Fluid diuscharging pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid discharging pump capable of effectively preventing fluid from being flowed out even in the case that pressure is applied to fluid stored a fluid storing segment. SOLUTION: A fluid discharging pump 1 is comprised of a cylinder 11, a piston 12 reciprocatable and movable within the cylinder 11 and a tubular body 13 installed at this piston 12. Within the tubular body 13 are arranged a pair of valves 31, 32 composed of steel balls, and a spring 33 for biasing these valves 31, 32 in a spaced-apart direction. The valve 31 abuts from above against a valve seat constituted by a tapered segment 25 of the tubular body 13 under an action of the spring 33. In addition, the valve 32 abuts from below against the valve seat constituted by an opening formed at the central part of a flange segment 23 of the tubular body 13 under an action of the spring 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid discharge pump used for discharging a fluid stored in a fluid storage section from a nozzle head.

[0002]

2. Description of the Related Art A liquid discharge pump as a kind of such a fluid discharge pump is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-2365.
No. 09, a nozzle head for discharging a liquid, a liquid storage unit for storing the liquid, a cylinder disposed above the liquid storage unit, and pressing the nozzle head Piston that can reciprocate in the cylinder, an inflow valve mechanism that allows the liquid stored in the liquid storage section to flow into the cylinder as the piston moves upward, and a piston that moves the liquid that flows into the cylinder downward. And an outflow valve mechanism for outflow to the nozzle head.

Further, in such an inflow valve mechanism and an outflow valve mechanism of a liquid discharge pump, since the flow of liquid can be closed with a simple structure, a spherical valve element called a ball valve and this valve element are provided. A valve mechanism using a valve seat that comes into contact with the valve mechanism is employed.

[0004]

In such a liquid discharge pump, when pressure is applied to the liquid stored in the liquid storage section, the liquid flowing into the cylinder flows out of the nozzle head. There is a problem.

Further, in particular, if pressure is applied to the liquid stored in the liquid storage portion while the nozzle head is pressed for some reason, the liquid flowing into the cylinder easily flows out of the nozzle head. Would.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is possible to effectively prevent the outflow of a fluid even when pressure is applied to the fluid stored in the fluid storage unit. It is an object of the present invention to provide a fluid discharge pump which can be used.

[0007]

According to a first aspect of the present invention, there is provided a cylinder disposed above a fluid storage part, a piston reciprocally movable in the cylinder, and a storage part in the fluid storage part. An inflow valve mechanism for allowing the flowed fluid to flow into the cylinder along with the upward movement of the piston,
An outlet valve mechanism for causing the fluid flowing into the cylinder to flow out to a nozzle head for discharging the fluid with the downward movement of the piston, wherein the outflow valve mechanism includes: A cylindrical body that reciprocates in the cylinder in synchronization with the piston, and has a spherical shape, and can abut on a valve seat formed at an upper portion of the cylindrical body in the cylindrical body from below. A first valve body, a second valve body having a spherical shape and capable of abutting from above on a valve seat formed in a lower portion of the cylindrical body in the cylindrical body, A spring for urging the valve body and the second valve body in a direction separating from each other is provided.

According to a second aspect of the present invention, in the first aspect of the present invention, the first valve body is pressed by pressing the first valve body at the time of the lowering operation of the cylinder. There is further provided pressing means for separating from a valve seat formed on the upper part of the body.

According to a third aspect of the present invention, there is provided a cylinder disposed above a fluid storage part, a piston reciprocally movable in the cylinder, and a fluid stored in the fluid storage part. An inflow valve mechanism for allowing the fluid to flow into the cylinder as the piston moves upward, and a fluid for flowing the fluid into the cylinder to a nozzle head for discharging the fluid as the piston moves downward. In the fluid discharge pump provided with an outflow valve mechanism, the outflow valve mechanism has a cylindrical body that reciprocates in the cylinder in synchronization with the piston, and has a spherical shape, and in the cylindrical body, A first valve body which can contact a valve seat formed at an upper portion of the cylindrical body from below, and a first valve body attached to the valve seat formed at an upper portion of the cylindrical body. With a spring that is energizing,
Pressing means for pressing the first valve body during the lowering operation of the cylinder to separate the first valve body from a valve seat formed on an upper portion of the tubular body. I do.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the inflow valve mechanism includes a valve seat formed below the cylinder and a valve seat formed under the cylinder. The valve body includes a contactable spherical valve body and a spring for urging the valve body toward the valve seat.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the fluid storage portion includes a hard cylinder member and the cylinder member with a decrease in the fluid. And a piston member moving in the direction of the nozzle head.

[0012] According to a sixth aspect of the present invention, in the first aspect of the present invention, the fluid reservoir is formed of a soft tube.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of a fluid container to which a fluid discharge pump 1 according to a first embodiment of the present invention is applied.

This fluid container is used as a gel container generally called a gel, such as a hair gel or a cleansing gel used in the field of cosmetics. In this specification, a liquid including a high-viscosity liquid, a semi-liquid, or a gel in which a sol is solidified in a jelly state is referred to as a liquid.

The fluid container comprises a fluid discharge pump 1 according to the present invention, and a nozzle head 2 for discharging a fluid connected to the fluid discharge pump 1 via a connecting cylinder 7.
And an outer lid 3, a cylindrical cylinder member 5, and a piston member 6 that moves vertically in the cylinder member 5, and includes a fluid storage part 4 that stores a fluid therein. .

In this fluid container, the nozzle head 2 is pressed and reciprocated in the vertical direction, so that the fluid stored in the fluid storage section 4 by the action of the fluid discharge pump 1 described in detail later. The body is discharged from the nozzle head 2. The piston member 6 moves in the cylinder member 5 in the direction of the nozzle head 2 as the amount of the fluid in the fluid reservoir 4 decreases.

In this specification, the vertical direction in FIG. 1 is defined as the vertical direction in the fluid container.
That is, in the fluid container according to this embodiment,
The nozzle head 2 side shown in FIG. 1 is the upward direction, and the piston member 6 side is the downward direction.

Next, a fluid discharge pump 1 according to the present invention.
Will be described. 2 and 3 are longitudinal sectional views of the fluid discharge pump 1 according to the first embodiment of the present invention. In these figures, FIG.
3 shows a state in which the connecting cylinder 7 is being lowered by being pressed, and FIG. 3 shows a state in which the connecting cylinder 7 is being raised by the nozzle head 2 being opened.

The fluid discharge pump 1 includes a cylinder 11
And a piston 12 that can reciprocate in the cylinder 11
And a cylindrical body 13 attached to the piston 12 and reciprocating in the cylinder 11 in synchronization with the piston 12.

A spring 15 is provided between the support member 14 provided below the cylinder 11 and the lower surface of the piston 12. For this reason, when the nozzle head 2 shown in FIG. 1 is pressed, this pressing force is transmitted to the piston 12 via the connecting cylinder 7 and the cylindrical body 13, and the piston 12 resists the urging force of the spring 15. To descend in the cylinder 11. On the other hand, when the pressing force on the nozzle head 2 shown in FIG. 1 is released, the piston 12 moves up in the cylinder 11 by the action of the spring 15.

Below the cylinder 11, a valve body 21 made of a steel ball is provided. The valve body 21 and the support member 14
A spring 22 is disposed between the two. The valve element 21
By the action of the spring 22, it is urged toward a valve seat constituted by the opening 16 formed at the lower end of the cylinder 11.

The valve body 21, the spring 22, and the opening 1
6 constitutes an inflow valve mechanism.

The cylindrical body 13 includes a flange 23, a cylindrical portion 24, a tapered portion 25, and a cylindrical portion 26. A pair of valve bodies 31 and 32 made of steel balls and a spring 33 for urging the valve bodies 31 and 32 in a direction away from each other are arranged inside the cylindrical body 13.

The valve body 31 is brought into contact with the valve seat formed by the tapered portion 25 of the cylindrical body 13 from above by the action of the spring 33. The valve body 32 abuts from below on a valve seat formed by an opening formed in the center of the flange portion 23 of the tubular body 13 by the action of the spring 33.

A valve seat constituted by these valve bodies 31, 32, a spring 33, a tapered portion 25 of the tubular body 13 and a valve seat constituted by an opening formed in the center of the flange 23 of the tubular body 13 , Constituting an outflow valve mechanism. Also, in particular,
The valve seat constituted by the valve body 31 and the tapered portion 25 of the cylindrical body 13 constitutes an inflow valve, and the valve body 32 and the cylindrical body 13
A valve seat formed by an opening formed at the center of the flange portion 23 constitutes a check valve.

The valve element 31 corresponds to a second valve element according to the present invention, and the valve element 32 corresponds to a first valve element according to the present invention.

A casing 18 for preventing leakage is provided on the outer peripheral portion of the connecting cylinder 7 above the cylindrical body 13. The lower end of the connecting cylinder 7 is formed by an opening formed in the center of the flange portion 23 of the tubular body 13 by pressing the valve body 32 when the piston 12 moves downward. A plurality of projections 17 functioning as pressing means for separating from the valve seat are formed.

Next, the operation of discharging the fluid by the fluid discharge container provided with the above-described fluid discharge pump 1 will be described.

In the initial state, as shown in FIG.
The valve body 21 is a valve seat formed by the opening 16 formed at the lower end of the cylinder 11, the valve body 31 is a valve seat formed by the tapered portion 25 of the cylindrical body 13, and the valve body 32 is a cylindrical shape. The valve 13 is in contact with a valve seat formed by an opening formed in the center of the flange portion 23 of the body 13. Further, the cylinder 11 is filled with a fluid.

When the nozzle head 2 is pressed in this state, the connecting cylinder 7 descends as shown in FIG.
The plurality of projections 17 formed at the lower end press the valve body 32. Thereby, the valve body 32 is separated from the valve seat formed by the opening formed in the center of the flange portion 23 of the tubular body 13 against the urging force of the spring 33.

The pressing force applied to the nozzle head 2 is transmitted to the piston 12 via the connecting cylinder 7 and the cylindrical body 13. As a result, the piston 12 moves down in the cylinder 11 together with the tubular body 13. As the piston 12 descends, the valve element 31 is pressed by the pressure of the fluid filling the cylinder 11. For this reason, as shown in FIG. 2, the valve element 31 separates from the valve seat formed by the tapered portion 25 of the cylindrical body 13 against the urging force of the spring 33 and flows into the cylindrical body 13. The body flows in.

The fluid flowing into the cylindrical body 13 flows out to the connecting cylinder 7 through an opening formed at the center of the flange 23 of the cylindrical body 13 and is discharged from the nozzle head 2.

When the pressing force applied to the nozzle head 2 is released after the piston 12 has moved down to the lower end of the stroke, as shown in FIG. The protrusion 17 formed at the lower end is pushed up. As a result, the valve body 32 comes into contact with a valve seat formed by an opening formed at the center of the flange portion 23 of the tubular body 13.

The action of the spring 15 causes the piston 1
2 rises in the cylinder 11 together with the tubular body 13.
Due to the pressure-reducing action in the cylinder 11 caused by the rise of the piston 12, the valve body 21 is pressed by the fluid stored in the fluid storage unit 4 shown in FIG. Therefore, as shown in FIG. 3, the valve element 21 separates from the valve seat formed by the opening 16 formed at the lower end of the cylinder 11 against the urging force of the spring 22, and flows into the cylinder 11. The fluid flows in from the body storage unit 4.

On the other hand, as shown in FIG. 3, the valve body 31 is biased by a spring 33 so that the tapered portion 25
Is in contact with the valve seat. Therefore, the fluid in the cylindrical body 13 and the connecting cylinder 7 is not sucked into the cylinder 11 side.

Here, the valve element 31 is forcibly brought into contact with the valve seat formed by the tapered portion 25 of the cylindrical body 13 by the action of the spring 33. Therefore, even when a high-clay liquid or gel is used as the fluid, the valve body 31 and the valve seat formed by the tapered portion 25 of the tubular body 13 can be reliably brought into contact with each other, It is possible to effectively prevent the fluid in the cylindrical body 13 and the connecting cylinder 7 from being sucked into the cylinder 11 side.

When the piston 12 moves to the upper end of the stroke, the valve element 21 moves the cylinder 1
Abuts with a valve seat constituted by an opening 16 formed at the lower end of the first valve 1. In this state, as shown in FIG. 1, the valve element 31 is formed at a valve seat constituted by the tapered portion 25 of the cylindrical body 13, and the valve element 32 is formed at the center of the flange 23 of the cylindrical body 13. In this state, each of the valve seats has an initial state in which it comes into contact with the corresponding valve seat, and the cylinder 11 is filled with the fluid.

Here, the valve body 21 is forcibly brought into contact with a valve seat constituted by the opening 16 formed at the lower end of the cylinder 11 by the action of the spring 22. For this reason,
Even when a high-clay liquid or gel is used as the fluid, the valve body 21 and the valve seat formed by the opening 16 formed at the lower end of the cylinder 11 can be reliably brought into contact with each other. It is possible to effectively prevent the fluid in 11 from flowing out into fluid reservoir 4 through opening 16.

As described above, in the initial state shown in FIG. 1, the valve body 21 is in the valve seat constituted by the opening 16 formed in the lower end of the cylinder 11, and the valve body 31 is in the cylindrical body 13
And the valve element 3
Numerals 2 are in contact with valve seats each formed by an opening formed at the center of the flange portion 23 of the tubular body 13.

Therefore, in this initial state, even when the cylinder member 5 in the fluid storage section 4 is pressed upward and pressure is applied to the fluid stored in the fluid storage section 4, the valve element 32 is not pressed. Is the flange portion 23 of the tubular body 13
Since it is in contact with the valve seat formed by the opening formed in the center, it is possible to reliably prevent the fluid from being discharged from the nozzle head 2.

Also, suppose that the cylinder member 5 in the fluid storage part 4 is pressed upward in a state where the nozzle head 2 is pressed, and pressure is applied to the fluid stored in the fluid storage part 4. In this case, the valve body 21 is provided on the valve seat formed by the opening 16 formed at the lower end of the cylinder 11 by the action of the spring 22, and the valve body 31 is provided by the tapered portion 25 of the cylindrical body 13 by the action of the spring 33. The fluid in the fluid storage unit 4 cannot easily reach the nozzle head 2 because the fluids are forcibly brought into contact with the configured valve seats. It is possible to effectively prevent further ejection.

In the above-described embodiment, the fluid discharge pump 1 according to the present invention is an airless bottle type fluid comprising a cylindrical cylinder member 5 and a piston member 6 which moves vertically within the cylinder member 5. Reservoir 4
Although the description has been given of the case where the present invention is applied to a fluid container having a fluid container, the fluid discharge pump 1 according to the present invention can be applied to other fluid containers.

FIG. 4 is a schematic longitudinal sectional view showing another embodiment of the fluid container to which the fluid discharge pump according to the first embodiment of the present invention is applied.

In the fluid container according to this embodiment, a fluid reservoir 8 made of a soft tube is used instead of the fluid reservoir 4 composed of the cylinder member 5 and the piston member 6 described above. .

In this embodiment, the same effects as those of the above-described embodiment can be obtained.

In particular, in the case of this embodiment, in the initial state, the fluid reservoir 8 made of a soft tube is used.
Is pressed to apply pressure to the fluid stored in the fluid storage unit 8, the valve 32 of the fluid discharge pump 1 is opened by the opening formed in the center of the flange 23 of the cylindrical body 13. Since it is in contact with the configured valve seat, it is possible to reliably prevent the fluid from being discharged from the nozzle head 2.

Further, in the case of this embodiment,
Even when the fluid storage portion 8 made of a soft tube is pressed while the nozzle head 2 is pressed and pressure is applied to the fluid stored in the fluid storage portion 8, the valve body 2 may be pressed.
1 is a valve seat formed by an opening 16 formed at the lower end of the cylinder 11 by the action of a spring 22;
Are forcibly brought into contact with the valve seats formed by the tapered portions 25 of the tubular body 13 by the action of the springs 33, so that the fluid in the fluid reservoir 4 can be easily dispensed with the nozzle head. 2 cannot be reached, and it is possible to effectively prevent the fluid from being discharged from the nozzle head 2.

In the above-described embodiment, the present invention is applied to a gel (g) generally called a gel such as a hair gel or a cleansing gel used in the field of beauty.
e)), the present invention is applicable to nutritional creams, massage creams, creams such as toothpastes and shoe creams, and containers for other fluids. is there.

[0049]

According to the first and second aspects of the present invention, the first valve body which can abut from below on the valve seat formed in the upper part of the cylindrical body in the cylindrical body. By the action, it is possible to effectively prevent the phenomenon that the liquid flowing into the cylinder flows out of the nozzle head when the pressure is applied to the liquid stored in the liquid storing section. In addition, due to the action of the second valve body, which can abut from above on a valve seat formed in the lower part of the cylindrical body in the cylindrical body, the liquid is stored in the liquid storing part with the nozzle head pressed. It is possible to effectively prevent the phenomenon that the liquid flowing into the cylinder easily flows out of the nozzle head when pressure is applied to the liquid.

According to the third aspect of the present invention, the inside of the liquid storage section is formed by the action of the first valve body which can abut from below on the valve seat formed in the upper part of the cylindrical body in the cylindrical body. It is possible to effectively prevent the phenomenon that the liquid flowing into the cylinder flows out of the nozzle head when pressure is applied to the liquid stored in the nozzle.

According to the fourth aspect of the present invention, a valve seat formed below the cylinder, a spherical valve element capable of contacting the valve seat, and a spring for urging the valve element toward the valve seat. By the action of the inflow valve mechanism having the above, when pressure is applied to the liquid stored in the liquid storage portion in a state where the nozzle head is pressed, the liquid flowing into the cylinder easily flows out of the nozzle head. The phenomenon can be more effectively prevented.

According to the fifth aspect of the present invention, there is provided a fluid storage portion including a hard cylinder member and a piston member which moves in the cylinder member toward the nozzle head as the fluid decreases. The present invention can be applied to a fluid container having the same.

According to the sixth aspect of the present invention, the present invention can be applied to a fluid container having a moving body storing section composed of a soft tube.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a fluid container to which a fluid discharge pump according to a first embodiment of the present invention is applied.

FIG. 2 is a longitudinal sectional view of the fluid discharge pump 1 according to the first embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of the fluid discharge pump 1 according to the first embodiment of the present invention.

FIG. 4 is a schematic longitudinal sectional view showing another embodiment of the fluid container to which the fluid discharge pump according to the first embodiment of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fluid discharge pump 2 Nozzle head 3 Outer lid 4 Fluid storage part 5 Cylinder member 6 Piston member 7 Connecting tube 8 Fluid storage part 9 Fluid discharge pump 11 Cylinder 12 Piston 13 Cylindrical body 14 Support member 15 Spring 17 Projection Part 18 Casing 21 Valve 22 Spring 31 Valve 32 Valve 33 Spring

Claims (6)

[Claims] 1. A cylinder disposed above a fluid storage part, a piston reciprocally movable in the cylinder, and a fluid stored in the fluid storage part as the piston moves upward. An inflow valve mechanism for flowing the fluid into the cylinder; and an outflow valve mechanism for allowing the fluid flowing into the cylinder to flow out to a nozzle head for discharging the fluid as the piston descends. In the fluid discharge pump, the outflow valve mechanism has a cylindrical body that reciprocates in the cylinder in synchronization with the piston, and has a spherical shape, and is provided above the cylindrical body in the cylindrical body. A first valve body capable of contacting the formed valve seat from below, and having a spherical shape, and abutting from above on a valve seat formed at a lower portion of the tubular body in the tubular body. A possible second valve element; Fluid-dispensing pump characterized in that it comprises a spring for biasing the serial first valve body and the second valve body in a direction away from each other, the. 2. The fluid discharge pump according to claim 1, wherein the first valve body is pressed on the cylindrical body by pressing the first valve body during the lowering operation of the cylinder. A fluid discharge pump further comprising a pressing means for separating from a formed valve seat. 3. A cylinder disposed above a fluid storage portion, a piston reciprocable in the cylinder, and a fluid stored in the fluid storage portion as the piston moves upward. An inflow valve mechanism for flowing the fluid into the cylinder; and an outflow valve mechanism for allowing the fluid flowing into the cylinder to flow out to a nozzle head for discharging the fluid as the piston descends. In the fluid discharge pump, the outflow valve mechanism has a cylindrical body that reciprocates in the cylinder in synchronization with the piston, and has a spherical shape, and is provided above the cylindrical body in the cylindrical body. A first valve body capable of contacting the formed valve seat from below, a spring for urging the first valve body toward a valve seat formed on an upper portion of the tubular body, and the cylinder During the lowering operation of the first By pressing the valve body, fluid-dispensing pump, characterized in that it comprises a pressing means for spacing the first valve body from the valve seat formed on an upper portion of the tubular body. 4. The fluid discharge pump according to claim 1, wherein the inflow valve mechanism includes: a valve seat formed below the cylinder; and a spherical ball capable of contacting the valve seat. And a spring for urging the valve body toward the valve seat. 5. The fluid discharge pump according to claim 1, wherein the fluid storage section includes a hard cylinder member and the nozzle inside the cylinder member as the fluid decreases. A fluid discharge pump comprising: a piston member moving in a head direction. 6. The fluid discharge pump according to claim 1, wherein the fluid storage section is formed of a soft tube.