KR200358294Y1 - Advanced small hand-operated pump - Google Patents

Abstract

The present invention is a small manual pump that can be used in a cosmetic container, etc., 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 can easily pump the high viscosity contents, moreover Since the compression spring is stably fixed to the shaft even when the button is separated, the assembly process of the pump is easy, and the parts are easily modularized, and there is little risk of failure even if the button is released during use. Since the inlet of the lower end of the housing is opened and closed by the opening and closing member of the shape it provides a small manual pump that can provide a high sealing force and pumping force when pumping.

Description

Advanced small hand-operated pump

The present invention relates to a small hand pump that can be used in a cosmetic container, etc. More specifically, 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 easy to high-viscosity contents In addition, the compression spring is stably fixed to the shaft even when the button is separated, thereby simplifying the assembly of the pump and facilitating the parts (modularization) of the parts and failure even if the button is released during use. There is little risk of, and since the inlet of the lower end of the housing by the opening and closing member of a specific shape provides a small manual pump that can provide a high sealing force and pumping force when pumping.

Small hand pumps are widely used in cosmetic containers for dispensing a certain amount of liquid or emulsion contents due to its convenience. 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 And a shaft for guiding and connecting the stem to the button, a piston for vertically moving along the inner wall of the housing while being mounted to the stem, a spring mounted under the inner surface of the housing, and a ball for opening and closing the inlet at the bottom of the housing. have.

However, these conventional hand pumps have some problems.

First, a compression spring providing restoring force to the pumping system is located inside the housing on the inlet 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.

Second, 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.

Third, the opening and closing ball of the lower inlet of the housing acts to open and close the inlet by the pressure change of the inner space of the housing and the action of gravity, so that it is difficult to quickly respond to the pumping operation and also to provide a high sealing force. Therefore, some contents may leak to the container during the pumping operation, and the pumping force may be low due to the inability to perform a quick opening and closing operation.

Various structures have been developed to solve this problem, but few hand pumps provide satisfactory results.

Accordingly, the present invention aims to solve these problems of the prior art and technical problems that have been requested from the past.

That is, the first 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 inner space of the housing, there is no possibility of contamination of the contents by the spring, and also easy to pump high viscosity contents It is to provide a hand pump that can. In addition, even when the button is separated from the pump body, the spring installed on the outside of the housing is not separated, thereby providing a manual pump that is easy to assemble the pump, easily modularizes the parts, and has a very low risk of failure during use. .

The second object of the present invention is to use the opening and closing member of a specific structure instead of the conventional opening and closing ball to operate in response to the vertical movement of the pumping system quickly and to exert a high sealing force and pumping force with excellent sealing properties It is to provide a hand pump.

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

2A and 2B are state diagrams under the pressurized and relaxed modes of the pump of FIG. 1;

3 is a vertical sectional view, top view and bottom view of the housing constituting the pump of FIG. 1;

4 is a vertical sectional view, top view and bottom view of the housing cap constituting the pump of FIG. 1;

5 is a vertical sectional view, top view and bottom view of the shaft constituting the pump of FIG. 1;

FIG. 6 is a vertical sectional view, top view and bottom view of the stem constituting the pump of FIG. 1; FIG.

FIG. 7 is a vertical sectional view, top view and bottom view of the piston constituting the pump of FIG. 1; FIG.

8 is a vertical sectional view and a plan view of the opening and closing member constituting the pump of FIG.

Description of the main signs in the drawings :

100: hand pump 200: button

300: housing 400: closure

500: housing cap 600: compression spring

700: shaft 800: stem

900: piston 1000: opening and closing member

Hand pump of the present invention for achieving this purpose,

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

A housing constituting the exterior of the pump;

A closure fastening to the upper outer surface of the housing through the housing cap and mounting the housing to the container;

A stem having a horizontal passage communicating with the inner space of the housing and a vertical passage communicating with the horizontal passage and protruding from the upper end of the housing;

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;

A housing cap for guiding the up and down movement of the shaft, connecting the housing to the closure, and sealing the internal space of the housing from the outside;

A piston configured to move up and down along the inner wall of the housing while being mounted at the bottom of the stem;

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

Located at the bottom of the inner space of the housing, opening and closing member (opening-closing member) for opening and closing the housing inlet when pumping;

It is configured to include.

In the hand pump of the present invention, the spring is located between the housing cap and the button when the button is pushed to pump the contents, and the contents of the inner space of the housing are discharged to the outlet of the button 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 so that the contents of the container flow into the interior space of the housing. Thus, the compression spring provides resilience for the performance of the pumping operation but is not located on the flow path of the contents, thus providing the same advantages as described above.

Preferably, a portion of the side of the upper part of the shaft protrudes and a compression spring is mounted between the protrusion and the housing cap. Therefore, even if the button is separated from the shaft, the compression spring can be kept mounted on the pump body, so that the pump is easy to assemble and modularize the parts, furthermore, the spring is separated even if the button is released during use. Can be prevented. In this structure, in order to further secure the fastening of the shaft and the stem, preferably, the upper end of the stem is in the shape of a harpoon, and fine protrusions are formed on the corresponding inner surface of the shaft. Thus, a rigid bond can be easily achieved by inserting and fastening the stem from below the cylindrical structure of the shaft.

Preferably, the opening and closing member is a hollow member having an open top, with radial protrusions formed on an outer side thereof, so as to be able to move correspondingly quickly according to the vertical movement of the stem and provide a high sealing force. In contact with the hollow inner surface of the opening and closing member is formed a vertical extension that can move up and down.

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 metal and, in some cases, may be made of a plastic material that is highly elastic.

Hereinafter, the content of the invention will be described in detail with reference to the drawings according to one embodiment of the present invention, but the scope of the present invention is not limited thereto.

1 shows a vertical cross-sectional view of a small hand pump according to one 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, and a fastening portion 220 coupled to the shaft 700 is vertically formed inside the center of the button. 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 “S” from the outside and simultaneously guides the vertical movement of the shaft 700. The compression spring 600 is mounted between the side cap 710 and the housing cap 500 formed on the top of the shaft 700. Therefore, even if the button 200 is removed from the shaft 700, the compression spring 600 is stably fixed to the main body of the pump 100. The stem 800 coupled to the inside of the shaft 700 having an overall cylindrical shape includes a horizontal passage 810 into which the contents of the housing internal space S flow, a vertical passage 820 connected thereto, And a lowermost vertical extension 830. The horizontal passage 810 is opened and closed by a piston 900 moving up and down while being in close contact with the outer surface of the stem 800 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 the state where no force is applied to the button 200 (hereinafter referred to as “pause mode”), and the horizontal force of the stem 800 is caused by the elastic force of the compression spring 600. The passage 810 is sealed by the piston 900. In the idle mode, even if the opening / closing member 1000 closes the inlet 310 or the opening / closing member 1000 does not close the inlet 310 due to the pressure of the contents of the housing internal space S, the pressure described later will be described. Fast sealing is achieved in mode.

2A and 2B show a pump 200 in a state in which a down pressure is applied to a button (200 in FIG. 1) (hereinafter referred to as "pressing mode") and a state in which such applied pressure is removed (hereinafter referred to as "relaxed mode"). Are shown respectively. For convenience of description, the button 200 and the closure 400 in FIG. 1 are not shown.

Referring to FIG. 2A, the stem 800 is also simultaneously lowered by the lowering of the shaft 700 in the pressurized mode, and the compression spring 600 located between the lateral protrusion 710 of the shaft 700 and the housing cap 500. ) Is compressed. Immediately after the stem 800 begins to descend, the vertical extension 830 lowers the opening and closing member 1000 to immediately close the inlet 310. 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 lower end of the shaft 800. The piston 900 does not move until it reaches the upper end of the outer edge portion 910 of the piston 900. Accordingly, the horizontal passage 810 is opened, and the contents pressurized in the housing internal space S flows into the horizontal passage 810 and rises along the vertical passage 820.

2B, the shaft 700 and the stem 800 are simultaneously raised by the restoring force of the compression spring 600 in the relaxation mode, and the outer edge portion 910 and the inner edge portion of the piston 900 as described above. Due to the dualized frictional force of 920, the piston 900 does not move until the inner edge 920 contacts the bottom protruding portion of the stem 800. Accordingly, the stem 800 is raised in a state where the horizontal passage 810 is closed, 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 8.

3 is a vertical cross-sectional view and a top view and a bottom view of the housing 300 are shown. As shown in FIG. 3, the housing 300 is composed of a multistage cylindrical member as a whole. The first step 302 of the largest diameter is where it engages with the housing cap (500 in FIG. 1), and the second step 304 is a radial projection (840 in FIG. 2A) under the stem 800 in pressurized mode. The third step 306 is where the lower end of the opening / closing member 1000 in FIG. 1 is in close contact with each other in the pressing mode. The protrusion 320 is discontinuously protruded from the upper side of the third step 306, and the radial protrusion (1030 of FIG. 2B) of the opening / closing member 1000 is connected to the housing side protrusion 320 in the relaxation mode. Further rise is prevented.

4 is a vertical cross-sectional view and a plan view and a bottom view of the housing cap 500 are shown. As shown in FIG. 4, the housing cap 500 has a curved portion extending from the side surface of the cylindrical body. The first bend 510 guides the up and down motion of the shaft (700 in FIG. 1) in close contact with its inner surface, and the second bend 520 is coupled to the top of the housing (300 in FIG. 1) and closed (FIG. 1 to 400). Such flexibility in flexure allows better guidance in shaft up and down movement and engagement with the housing.

5 is a vertical cross-sectional view and a top view and a bottom view of the shaft 700 are shown. As shown in Figure 5, the shaft 700 is composed of a cylindrical body 720 as a whole, the side protrusion 710 is formed on the upper outer surface. The side protrusion 710 engages with the top of the compression spring (600 in FIG. 1) and serves to secure it to the pump body. Protrusion 730 is formed on the upper inner surface of the cylindrical body 720 so that the harpoon top of the stem (800 of FIG. 1) can be coupled, thereby providing excellent fastening force with the stem 800.

6 illustrates a vertical cross-sectional view, top view, and bottom view of stem 800. As shown in FIG. 6, the stem 800 is in communication with the horizontal passage 810 leading to the housing interior space (S of FIG. 1), the outlet 210 of the button (200 of FIG. 1), and the horizontal passage 810. It consists of a long vertical passage 820, a radial projection 840 formed at the bottom of the horizontal passage 810, and a long bottom extension 830 connected to the opening and closing member 1000. The harpoon top 850 of the stem 600 can, due to its structural feature, be firmly coupled to the inner surface protrusion 730 of the shaft (700 of FIG. 5) described above. The lower extension part 830 moves along the hollow part of the opening / closing member 1000 of FIG. 1, and in order to prevent a pressure change from occurring inside the hollow part, the lower extension part 830 is hollow even when the lower extension part 830 is coupled. A fine groove 832 is vertically formed so that the inside of the portion can pass through the housing inner space S.

7 is a vertical cross-sectional view and a top view and a bottom view of the piston 900 is shown. As shown in FIG. 7, the piston 900 consists of an outer edge 910 in contact with the inner surface of the housing (300 in FIG. 1) and an inner edge 920 in contact with the outer surface of the stem (800 in FIG. 1). The outer diameter R of the outer edge portion 910 is slightly larger than the inner diameter of the housing 300 and the upper and lower ends are each bent outward. Thus, to insert the piston 900 into the inner surface of the housing 300, the upper and lower ends of the outer edge portion 910 is bent inward to match the diameter of the inner surface of the housing 300, thereby to the inner surface of the housing The frictional force of the outer edge 910 is greater than the frictional force of the inner edge 920 against the stem inner surface. Due to the dualization of the frictional force, as described above, in the pumping process, the horizontal passage 810 of the stem 800 is opened and closed by the inner edge portion 920 of the piston 900.

8 is a vertical cross-sectional view and a plan view of the opening and closing member 1000 is shown. As shown in FIG. 8, the opening and closing member 1000 has a hollow structure with an open top. The lower end of the opening / closing member 1000 is rounded at its side to widen the contact area with the inlet (310 of FIG. 1) in the pressing mode. The lower extension 830 of the stem (800 of FIG. 1) is inserted into the hollow portion 1010, and fine protrusions 1020 are formed inside the side surfaces to increase friction with the lower extension 830. Accordingly, the opening / closing member 1000 can move quickly and correspondingly according to the vertical movement of the stem 800. The rise of the opening / closing member 1000 according to the rise of the stem 800 is prevented only when the radial protrusion 1030 formed on the side thereof reaches the side protrusion (320 in FIG. 3) of the inner surface of the stem. Only 800 continues to climb. At this time, the contents in the container (not shown) is introduced into the housing inner space (S of FIG. 2B) through the spaced gaps of the radial protrusions 1030.

Those skilled in the art to which the present invention pertains will be capable of various applications and modifications within the scope of the present invention based on the above contents.

The compact hand pump of the present invention has a compression spring installed on the outside of the housing, which provides 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 spring, and can easily pump high viscosity contents. Even when the button is separated from the pump body, the spring installed on the outside of the housing is not separated, thereby providing a manual pump which simplifies assembly of the pump, easily modularizes components, and has a very low risk of failure during use. In addition, by using the opening and closing member of the specific structure instead of the conventional opening and closing ball, it operates in response to the up and down movement of the pumping system and has a feature that can exhibit a high sealing force and pumping force with excellent sealing properties.

Claims (4)

Discharge port is formed and the button (button) mounted on the upper end of the shaft; A housing constituting the exterior of the pump; A closure fastening to the upper outer surface of the housing through a housing cap and mounting the housing to the container; A stem having a horizontal passage communicating with the inner space of the housing and a vertical passage communicating with the horizontal passage and protruding from the upper end of the housing; 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; A housing cap for guiding the up and down movement of the shaft, connecting the housing to the closure, and sealing the internal space of the housing from the outside; A piston configured to move up and down along an inner wall of the housing while being mounted at the bottom 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 Located at the bottom of the inner space of the housing, the opening and closing member for opening and closing the inlet of the housing when pumping; Hand pump is configured to include. 2. Hand pump as claimed in claim 1, wherein a projection is formed on the side of the shaft upper portion, and a compression spring is mounted between the side projection and the housing cap. 2. The stem of claim 1, wherein the upper end of the stem is in the shape of a harpoon, and fine protrusions are formed on a corresponding inner surface of the shaft, so that a fastening is formed by inserting and joining the stem from below the cylindrical structure of the shaft. Hand pump. According to claim 1, wherein the lower end of the stem is formed with a vertical extension, the opening and closing member is a hollow member with an open top is formed radially outwards on the side, the vertical extension is hollow of the opening and closing member Hand pump, characterized in that the moving close to the inner surface.