KR20090000905A - Small hand-operated pump - Google Patents

Abstract

A miniature manual pump is provided not to leave residue in an outlet after pumping by setting up a compressed spring providing a force of restitution in pumping outside and to prevent foreign materials from being flown from an outside and pump easily contents. A miniature manual pump contains a button which is mounted on an upper end of a shaft and in which an outlet is formed, a housing of a hollow structure, a closure which is connected at an outer surface of an upper part of the housing and mounts the housing to a container, a housing cap which is mounted on a top portion opening of the housing, guides an up and down motion of the shaft and seals an internal space of the housing from an outside, the shaft which is connected to a bottom part of a button, is positioned at an outer surface of a stem and moves up and down along an inner surface of the housing cap, the stem having an insertion hole which is inserted to a state that top sticks of opening and closing members are adheres closely to a center of a bottom section, a piston which opens and closes a perpendicularity flow channel of the stem, is mounted on a lower part of the shaft and moved up and down along an inner wall of the housing, the compressed spring which is positioned between the button and the housing cap and provides a restitution force to the shaft in pumping, a main body of the lower part which opens and closes an inlet port of a lower end of the housing in pumping and the opening and closing members containing the top stick moving up and down in pumping at a state of being inserted into the insertion hole of the stem.

Description

Small Hand-operated Pump {Small Hand-operated Pump}

1 is a vertical sectional view of a small hand pump according to one embodiment of the present invention;

FIG. 2 is a vertical sectional view under pressure mode of the pump of FIG. 1; FIG.

3 is a plan view, side view and bottom view of the opening and closing member constituting the pump of FIG. 1;

4 is a plan view, side views and a bottom view of the stem constituting the pump of FIG. 1;

5 is a plan view, side views and a bottom view of the housing cap constituting the pump of FIG.

The present invention relates to a small hand pump that can be used in a shower or cosmetic container, and more particularly, the compression spring that provides a restoring force when pumping is installed on the outside of the housing, there is no contamination of the contents and high viscosity The contents can be easily pumped, and since the inlet of the lower end of the housing is opened and closed by a specific opening and closing member, it can provide a high sealing force and a pumping force during pumping, and has a sanitary structure by suctioning the residue of the outlet again. A small hand pump.

Due to its convenience, small hand pumps are widely used in shower or cosmetic containers for dispensing liquid or emulsion contents by a certain amount. In particular, the manual pump has been widely used due to the feature that the contents can be easily discharged by a certain amount while storing the contents in the container, and related technologies have been steadily developed.

In the main configuration of the conventional small hand pump, the housing constituting the external appearance of the pump, the closure used to mount the housing to the container, the stem communicating with the discharge port of the button and moving up and down along the housing, the vertical movement of the stem A shaft for guiding and connecting the stem to the button, a housing cap for guiding the up and down movement of the shaft and sealing the inner space of the housing from the outside, and a vertical movement along the inner wall of the housing while being mounted to the stem. It includes a piston, a spring mounted below the inner surface of the housing, a ball for opening and closing the inlet of the lower end of the housing.

However, these conventional hand pumps have some problems.

First, after pumping, the contents of the contents remain in the discharge port of the button, which is not hygienic, and the contents solidify and block the discharge port.

Second, foreign matter may flow into the housing from the outside, such as water and dust. This phenomenon occurs due to repeated pumping, which is closely spaced when assembling parts, and foreign matter enters between the housing cap and shaft and is mixed with the contents, and normal pumping is performed by foreign matter introduced into the operating part of the pump. It becomes difficult.

Third, a compression spring providing restoring force to the pumping system is located inside the housing on the inflow path of the contents, acting as a flow resistance factor. Therefore, a high elastic spring is required or a large inner space of the housing is required, which presents a problem of rigid pumping and large pump size. In addition, there is a problem that makes it difficult to pump high-viscosity content.

Fourth, since the compression spring is in contact with the contents, there is a high possibility of contamination of the contents when the compression spring is deteriorated.

Various structures have been developed to solve this problem, but there are few hand pumps that still provide satisfactory effects.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above and the technical problems that have been requested from the past.

That is, the first object of the present invention is to provide a manual pump which can be introduced back into the pump without remaining residue in the discharge port after pumping.

It is a second object of the present invention to provide a hand pump having an improved structure to fundamentally prevent the inflow of foreign substances from the outside.

The third object of the present invention is that the compression spring is installed on the outside of the housing to provide a small flow resistance of the contents and a large internal space of the housing, there is no possibility of contamination of the contents by the spring and can easily pump high viscosity contents It is to provide a hand pump.

Manual pump according to the present invention for achieving this object,

Discharge port is formed and the button (button) mounted on the upper end of the shaft;

A housing having a hollow structure constituting the exterior of the pump;

A closure coupled to the upper outer surface of the housing and mounting the housing to the container;

A housing cap mounted to the upper opening of the housing, guiding the up and down movement of the following shaft, and sealing the internal space of the housing from the outside;

A shaft which is connected to the lower end of the button and moves up and down along the inner surface of the housing cap while being coupled to the outer surface of the stem;

It is coupled with the lower inner surface of the shaft, one or more vertical flow paths are formed on the contact surface with the shaft, and an insertion groove is formed in the center of the lower surface to insert the upper rod of the following opening and closing member in close contact with the shaft. Stems;

A piston configured to move up and down along the inner wall of the housing while being mounted to the lower portion of the shaft and to open and close the vertical flow path of the stem;

A compression spring that provides restoring force to the shaft when pumping and is located between the button and the housing cap; And

An opening and closing member disposed at a lower end of the inner space of the housing, the lower body opening and closing the lower opening of the housing when pumping, and an upper rod configured to vertically move when pumping while being inserted into an insertion groove of the stem;

It is configured to include.

In the hand pump of the present invention having such a structure, when the button is pressed to pump the contents, the compression spring located between the housing cap and the button is compressed, and in the process, the contents of the inner space of the housing are discharged through the vertical passage of the stem. On the contrary, when the force applied to the button is removed, the restoring force of the spring is transmitted to the shaft, and the contents of the container are introduced into the inner space of the housing. Therefore, the compression spring is not located in the flow path of the contents while providing a restoring force for performing the pumping operation, so as described above, the flow resistance of the contents is reduced, and there is no possibility of contamination of the contents by the springs. To provide.

Furthermore, when a button is pressed, a portion of the upper rod of the opening / closing member is inserted into the shaft through the stem to press the contents of the container so that the contents inside the shaft are discharged smoothly through the discharge port, and when the force applied to the button is removed. As the shaft inserted into the housing is raised by the restoring force of the compression spring, a portion of the upper rod inserted into the shaft is pulled out of the shaft through the insertion groove of the stem. At this time, the pressure inside the shaft is lowered by the space as the upper rod is pulled out, so that the residue of the discharge port is sucked into the shaft. Therefore, since no residue remains in the discharge port after pumping, it is hygienic and it is possible to prevent the phenomenon that the discharge hole is clogged while the residue of the discharge hole is solidified.

In one preferred example, the lower end of the button is formed with an indented groove in the upper direction, it may be made of a structure in which a compression spring is mounted between the indented groove and the housing cap. Therefore, it does not need a separate part for mounting the compression spring, it can also be made of a structure that is easy to mount the compression spring.

Preferably, the lower end of the stem is formed with a multi-stage hollow extension that increases in diameter in the lower direction, the lower end of the housing is composed of a multi-stage structure that decreases in the lower direction corresponding to the hollow extension The lowering of the stem for pumping may be such that the extension ends while engaging the multi-stage inner surface structure at the bottom of the housing.

In other words, the shaft and the stem connected to the shaft is lowered at the same time as the button of the pump is pressed, and the lower stage is completed by engaging the multi-stage inner structure and the lower structure of the stem, so that various members constituting the pump may be damaged by excessive pressure. Can be reduced.

In the opening and closing member, the lower body has a V-shaped structure inverted in a vertical section, and may have a structure in which its outer circumferential surface extends in a horizontal direction so as to correspond to the inner diameter of the lower end of the housing. Preferably, the inner surface of the lower inlet of the housing may have a structure in which the outer circumferential surface of the extended portion of the lower body may be in close contact and move up and down.

Further, the inner surface of the lower inlet of the housing is formed with an annular protrusion having a concave-convex structure on a vertical cross section, and the outer peripheral surface extension of the opening / closing member has a shape of the annular protrusion so as to increase the adhesion of the opening / closing member to the annular protrusion during pumping. It may be made of a corresponding uneven structure.

That is, the annular projection formed on the inner surface of the lower end of the housing and the lower surface of the lower body of the opening and closing member are configured to correspond to each other, and by pressing the button of the pump, the opening and closing member is lowered like the shaft and the stem while being engaged with the annular projection to open the lower end of the housing. It may be made of a closing structure. In addition, the lower surface of the annular structure and the lower body of the opening and closing member is formed of a concave-convex structure corresponding to each other, thereby making close contact with each other at a wide interface, the phenomenon that the contents are introduced into the housing through the close contact with the contents when the lower inlet of the housing is closed Can be prevented.

In another example, the inner cylinder portion of the housing cap in contact with the inner surface of the shaft is relatively higher than the outer cylinder portion so as to increase the sealing force of the inner space of the housing so that foreign matter such as water does not enter the inner space of the housing from the outside. It is preferred to have a structure extending upwardly in height.

The material of each component constituting the present invention is not particularly limited, and polyethylene, polyoxymethylene, such as polypropylene, high density polyethylene (HDPE), linear low density polyethylene (LLDPE), etc. in consideration of ease of molding and price, etc. Synthetic resins such as (POM) may be preferably used. Compression springs are generally made of stainless steel and, in some cases, may be made of a plastic material that is highly elastic.

Hereinafter, although described with reference to the drawings according to an embodiment of the present invention, this is for easier understanding of the present invention, the scope of the present invention is not limited thereto.

1 is a vertical cross-sectional view of a small hand pump according to an embodiment of the present invention.

The small hand pump 100 of FIG. 1 includes a button 200 at its top. The button 200 includes a discharge port 210 facing the side thereof, the fastening portion 220 coupled to the shaft 700 is formed vertically in the center of the button, the lower end of the button 200 The indented groove 230 has a structure formed in the upper direction. The main appearance of the pump 100 is composed of a substantially cylindrical housing 300 having a multi-stage diameter and a closure 400 which serves to mount the pump 100 to a container (not shown). The housing 300 and the closure 400 are coupled to each other by a curved housing cap 500. The housing cap 500 seals the housing inner space from the outside and simultaneously guides the vertical movement of the shaft 700. The compression spring 600 is mounted between the indented groove 230 of the button and the housing cap 500.

The vertical passage 710 and the housing inner space S in the shaft are opened and closed by a piston 900 that moves up and down while being in close contact with the outer surface of the shaft 700 and the inner surface of the housing 300. The housing internal space S is opened and closed by the operation of the opening and closing member 1000 located directly above the inlet 310.

FIG. 1 shows the pump 100 in a state where no force is applied to the button 200 (hereinafter referred to as “rest mode”), and the vertical direction of the shaft 700 is caused by the elastic force of the compression spring 600. The passage 710 and the housing internal space S are sealed by the piston 900.

A pump in a state in which a downward pressure is applied to the button 200 (hereinafter referred to as “pressing mode”) is schematically illustrated in FIG. 2, and referring to FIG. 2 together with FIG. 1, the shaft 700 in pressurized mode. The lowering of the stem 800 simultaneously lowers, and the compression spring 600 located between the indented groove 230 of the button 200 and the housing cap 500 is compressed.

Simultaneously pressing the pump 200, the shaft 700 and the stem 800 connected to the shaft 700 are lowered, and the lowered stem 800 lowers the opening and closing member 1000 again to seal the inlet 310. Let's do it. Therefore, the sealing of the inlet 310 by the opening and closing member 1000 is made to respond quickly to the pumping operation. On the other hand, since the frictional force that the outer edge 910 of the piston 900 has on the inner surface of the housing 300 is greater than the friction force that the inner edge 920 has on the outer surface of the stem 800, the shaft 700 is formed on the shaft 700. The piston 900 does not move until the bottom of the side protrusion reaches the top of the inner edge 920 of the piston 900. Accordingly, the vertical passage 710 and the housing internal space S are opened to each other, and the contents pressurized in the housing internal space S flow into the vertical passage 710 to rise.

In addition, while a portion of the upper rod 1020 of the opening and closing member 1000 is inserted into the shaft 700 through the stem 800, the contents of the container are pressed to discharge the contents of the inside of the shaft 700. To ensure a smooth discharge. On the contrary, when the force applied to the button is removed, the shaft 700 that has been lowered into the housing 300 by the restoring force of the compression spring 600 is raised, and the upper rod 1020, most of which is inserted into the shaft 700, is raised. A portion of the through the insertion groove of the stamp 800 will be out of the shaft 700. At this time, as the pressure inside the shaft 700 is lowered by the volume of the upper rod 1020, the residue of the discharge port 210 is sucked into the shaft 700.

Referring back to FIG. 1 in the rest mode, the shaft 700 and the stem 800 are simultaneously raised by the restoring force of the compression spring 600, and the outer edge 910 of the piston 900 as described above. Due to the dualized frictional force of the inner and outer edges 920, the piston 900 does not move until the inner edge 920 comes into contact with the hollow extension of the stem 800 (FIG. 4: 810). Therefore, the stem 800 rises in a state where the vertical passage 710 and the housing internal space S are sealed to each other, and a pressure drop in the housing internal space S occurs. This pressure drop is solved as the contents are introduced into the housing internal space S while the opening and closing member 1000 is opened.

Hereinafter, some elements constituting the pump 100 of FIG. 1 will be described in more detail with reference to FIGS. 3 to 5.

First, a plan view, side views and a bottom view of the opening and closing member constituting the pump of FIG. 1 are schematically shown in FIG.

Referring to FIG. 3, the opening / closing member 1000 includes a lower main body 1010 for opening and closing a housing lower inlet when pumping, and an upper rod for vertical movement during pumping in a state of being inserted into an insertion groove of a stem (not shown) ( 1020). The lower body 1010 has a V-shaped structure inverted in a vertical section (see FIGS. 1 and 2), and its outer circumferential surface extends in a horizontal direction so as to correspond to the inner diameter of the lower inlet of the housing. The inlet is opened and closed as the extension portion 1030 rises and falls. At this time, the annular protrusion (not shown) formed on the inner surface of the lower inlet of the housing and the lower surface of the extended portion 1030 of the opening / closing member have a structure corresponding to each other. As it descends with the stem, it engages with the annular protrusion to create a structure for closing the inlet bottom of the housing.

Next, FIG. 4 schematically shows a plan view, side views and a bottom view of the stem constituting the pump of FIG. 1.

Referring to FIG. 4, the stem 800 includes a hollow body 810 having both sides open, and an extension part 820 having a multistage shape that is connected to the hollow body 810 and increases in diameter in a downward direction. . Thus, the lowering of the stem 800 for pumping consists of a structure in which the extension 820 terminates while engaging the multi-stage inner surface structure at the bottom of the housing. In addition, an insertion groove 830 is formed at the center of the extension part 820 to insert the upper rod of the opening / closing member (not shown) in close contact, thereby guiding the vertical movement of the upper rod.

5 is a plan view, side views and a bottom view of the housing cap constituting the pump of FIG.

Referring to Figure 5, the housing cap 500 is mounted to the upper opening of the housing to seal the inner space of the housing from the outside, it is made of a hollow structure to guide the vertical movement of the shaft. The inner cylinder portion 510 of the housing cap 500 in contact with the inner surface of the shaft is relatively larger than the outer cylinder portion 520 so as to increase the sealing force of the inner space of the housing so that foreign substances such as water do not enter the inner space of the housing from the outside. It is composed of a structure extending upward to a high height (H).

Although described above with reference to the drawings according to an embodiment of the present invention, those of ordinary skill in the art will be able to perform various applications and modifications within the scope of the present invention based on the above contents.

As described above, the compact hand pump according to the present invention is provided with a compression spring outside the housing to provide a small flow resistance of the contents and a large inner space of the housing, there is no possibility of contamination of the contents by the compression spring, High viscosity contents can also be easily pumped.

In addition, after the pumping, the residue of the discharge port flows back into the pump due to the pressure difference, so that the contents can be used sanitarily, and the discharge port can be prevented from clogging due to the solidification of the contents.

Claims (6)

Discharge port is formed and the button (button) mounted on the upper end of the shaft; A housing having a hollow structure constituting the exterior of the pump; A closure coupled to the upper outer surface of the housing and mounting the housing to the container; A housing cap mounted to the upper opening of the housing, guiding the up and down movement of the following shaft, and sealing the internal space of the housing from the outside; A shaft which is connected to the lower end of the button and moves up and down along the inner surface of the housing cap while being coupled to the outer surface of the stem; It is coupled with the lower inner surface of the shaft, one or more vertical flow paths are formed on the contact surface with the shaft, and an insertion groove is formed in the center of the lower surface to insert the upper rod of the following opening and closing member in close contact with the shaft. Stems; A piston configured to move up and down along the inner wall of the housing while being mounted to the lower portion of the shaft and to open and close the vertical flow path of the stem; A compression spring that provides restoring force to the shaft when pumping and is located between the button and the housing cap; And An opening and closing member disposed at a lower end of the inner space of the housing, the lower body opening and closing the lower opening of the housing when pumping, and an upper rod configured to vertically move when pumping while being inserted into an insertion groove of the stem; Hand pump is configured to include. The hand pump as claimed in claim 1, wherein an indented groove is formed in the lower end of the button in an upward direction, and a compression spring is mounted between the indented groove and the housing cap. According to claim 1, wherein the lower end of the stem is formed with a multi-stage hollow extension to increase the diameter in the lower direction, the lower end of the housing in a multi-stage structure corresponding to the hollow extension is reduced in the lower direction And the lowering of the stem for pumping ends with the extension engaging the multi-stage inner surface structure at the bottom of the housing. According to claim 1, wherein the lower body in the opening and closing member is a V-shaped structure inverted in a vertical section, the manual pump, characterized in that its outer peripheral surface is extended in the horizontal direction to correspond to the inner diameter of the lower inlet of the housing . According to claim 4, wherein the inner surface of the lower inlet of the housing is formed with an annular projection having a concave-convex structure in the vertical cross-section, the outer peripheral surface extension portion of the opening and closing member so as to increase the adhesion of the opening and closing member to the annular projection during pumping Manual pump, characterized in that the concave-convex structure corresponding to the shape of the projection. The inner cylinder portion of the housing cap in contact with the inner surface of the shaft has a height higher than that of the outer cylinder portion so as to increase the sealing force of the inner space of the housing so that foreign matter such as water does not enter the inner space of the housing from the outside. Hand pump, characterized in that consisting of a structure extended upward.

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