KR102074520B1 - A Push Head Pump Structure Preventing Nozzle Stuck - Google Patents

Abstract

The present invention relates to a pump push head that can reduce the inconvenience of use by preventing the liquid from drying on the nozzle, and through the structural coupling of the liquid pump and the air pump, the liquid discharge is made when the pump is pressed, and then When the pump is released, the spring repulsion force is used to operate the air pump by the force of the push head to return to its original position to remove the residue left in the nozzle.

Description

A Push Head Pump Structure Preventing Nozzle Stuck}

The present invention relates to a pump push head which can reduce the inconvenience in use by preventing the liquid from drying on the nozzle.

Recently, it is common to extract and use a liquid detergent such as shampoo contained in a container by a pump method. However, when the detergent is not used for a long time, inconveniences in using the pump are increasing, such as residues remaining in the liquid pump nozzles clogging and splashing in different directions.

Accordingly, techniques for using the self-sealing type discharge valve as in Patent Documents 1 to 3, or techniques for overcoming the above problems by using a method of physically blocking the inlet of the nozzle as in Patent Document 4 have been proposed.

However, even if the above method is applied, there is a problem that the nozzle clogging occurs due to the dryness of the liquid remaining at the end of the nozzle, which is inconvenient to use, or the end of the nozzle is dirty, thereby causing aesthetic damage.

Patent Registration No. 849356 Patent Registration No. 785282 Patent Registration No. 893115 Utility Model Registration Publication No. 463139

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a pump push head capable of eliminating clogging of the nozzle discharge port and mess of the nozzle tip.

In order to solve the above-mentioned problems, the present invention, through the structural coupling of the liquid pump and the air pump, the liquid discharge is made when the pump is pressed, and then the force to return the push head to its original position by the spring repulsive force when the pump is released Thereby operating the air pump to provide a pump push head that removes residues left in the nozzle.

Specifically, the present invention, the pumping unit 13 is connected to the tank unit 15 in which the liquid is stored; A nozzle unit 11 having a first connection part 111 connected to the pumping part 13 at one end and a discharge port 112 at the other end; And a pump (10) provided in the pumping unit (13) to supply the liquid in the tank unit (15) to the nozzle unit (11). to provide.

The pump 10 includes: a cylinder 20 provided inside the pumping part 13; A piston (30) accommodated in the cylinder (20) to reciprocate in the longitudinal direction of the cylinder; A liquid chamber (22) defined by the longitudinal first space in the cylinder section defined by the piston (30); A gas chamber 24 defined by a space in a second direction opposite to the first direction in the longitudinal direction of the cylinder partitioned by the piston 30; An elastic body 33 elastically supporting the piston 30 in a direction in which the piston 30 reduces the volume of the gas chamber 24 and increases the volume of the liquid chamber 22; A rod 31 having one end connected to the piston 30 so that an external force is applied to the piston 30 and the other end exposed to the outside of the cylinder; A first communication hole 221 provided at the side of the liquid chamber 22 and serving as a passage connected to the tank unit 15; And a second communication hole 222 provided on the liquid chamber 22 side and serving as a passage connected to the first connection portion 111 of the nozzle unit 11.

The pump 10 includes: a second connection part 121 connected to the gas chamber 24 at one end thereof, and the other end of the nozzle part between the first connection part 111 and the discharge port 112. A gas communication passage 12 constituting a confluence portion 122 connected to 11; A third communication hole 243 provided at the side of the gas chamber 24 and serving as a passage connected to the outside of the cylinder; And a fourth communication hole 244 provided at the gas chamber 24 side and serving as a passage connected to the second connection part 121.

And the pump 10 is provided in the vicinity of the first communication hole 221, allowing the flow of liquid from the tank portion 15 toward the liquid chamber 22 and the flow of the liquid in the opposite direction A first check valve 41 for blocking; It is provided in the nozzle portion 11 between the second communication hole 222 and the confluence portion 122, and allows the flow of liquid toward the confluence portion 122 in the second communication hole 222, A second check valve 42 which blocks the flow of the liquid in the opposite direction; A third check valve provided near the third communication hole 243 and permitting the flow of the gas from the outside of the cylinder 20 toward the gas chamber 24 and blocking the flow of the gas in the opposite direction ( 43); And a flow of liquid provided between the fourth communication hole 244 and the confluence part 122 in the gas communication path 12 and toward the confluence part 122 in the fourth communication hole 244. And a fourth check valve 44 which permits and blocks the flow of the liquid in the opposite direction.

A stopper 311 for limiting the movement range of the piston 30 may be provided in the rod 31.

The gas communication path 12 may be connected to the confluence portion 122 in a form inclined to the opposite side of the discharge port 112 with respect to the confluence portion 122.

According to the pump having the push head structure of the present invention, it is possible to prevent the phenomenon of clogging the nozzle and the nozzle end of the pump by removing the liquid remaining as a residue at the discharge port of the liquid pump.

Accordingly, it is easy to use and maintains a clean appearance.

In addition to the effects described above, the specific effects of the present invention will be described together with the following description of specifics for carrying out the invention.

1 is a schematic diagram of a pump assembly according to the present invention.
2 is a view showing a process of operating the pump by pressing the pump assembly of FIG.
3 is a view showing a process of operating the pump when the pump is released.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

The present invention is not limited to the embodiments disclosed below, but can be variously modified and implemented in various different forms. This embodiment is provided only to make the disclosure of the present invention complete and to fully inform the person skilled in the art the scope of the present invention. Therefore, the present invention is not limited to the embodiments disclosed below, but the substitution and addition of the configuration of any one embodiment and the configuration of another embodiment, as well as all changes, equivalents included in the spirit and scope of the present invention It is to be understood to include to substitutes.

The accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, but are not limited to the technical spirit disclosed in the specification by the accompanying drawings, and all modifications and equivalents included in the spirit and scope of the present invention. It should be understood to include water or substitutes. In the drawings, the components may be exaggerated in size or thickness in consideration of the convenience of understanding and the like, but the scope of protection of the present invention should not be limitedly interpreted.

The terminology used herein is for the purpose of describing particular embodiments or embodiments only and is not intended to be limiting of the invention. And singular expressions include plural expressions unless the context clearly indicates otherwise. The terms "comprise," and "comprise" in the specification are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification. In other words, in the specification, the terms including, are made. It should be understood that it does not exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

When a component is referred to as being "above" or "below" another component, it is to be understood that other components may be present in the middle as well as being placed directly above the other component. .

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

[Structure of Pump Assembly]

Hereinafter, the structure of the pump assembly will be described with reference to FIG. 1.

The pump assembly according to the present invention includes a pumping part 13, a nozzle part 11, and a pump 10. The pumping unit 13 is a configuration in which the pump 10 is provided, and is connected to the tank unit 15 in which a liquid such as lotion and shampoo is stored.

The tank unit 15 may be a container having a thread formed thereon. The pumping part 13 may be a lid portion of a container in which a screw thread is screwed to the screw thread.

The nozzle part 11 is connected to the pumping part 13. The nozzle part 11 may have a shape in which one end thereof is connected to the pumping part 13 and the discharge hole 112 is provided at the other end thereof. One end of the nozzle unit 11 may include a first connecting portion 111 connected to the pumping portion 13. The first connection part 111 may be manufactured integrally with the pumping part 13 or may be assembled after being manufactured separately.

The pump 10 provided in the pumping unit 13 pumps and supplies the liquid in the tank unit 15 to the nozzle unit 11.

The pump 10 includes a cylinder 20 provided in the pumping unit 13 and a piston 30 accommodated in a bore defined by the cylinder 20. The bore defined by the inner space of the cylinder 20 is a cylindrical space. The piston 30 has a shape such as a hockey puck including a circular cross section intersecting the circular cross section of the bore, and is installed to be movable along the longitudinal direction of the cylinder 20 in close contact with the inner wall of the cylinder 20. do. That is, the piston 30 may move in the length "? ** first direction (left direction on the drawing) of the cylinder 20 or in the second direction (right direction on the drawing) of the cylinder 20 in the longitudinal direction. .

The space provided inside the cylinder 20 is divided into two spaces by the piston 30. The longitudinal first longitudinal space of the cylinder, defined by the piston 30, forms a liquid chamber 22. The space in the second direction opposite to the first direction in the longitudinal direction of the cylinder, defined by the piston 30, forms the gas chamber 24. As the space of the liquid chamber 22 decreases as the piston 30 moves, the space of the gas chamber 24 increases by that amount. When the space of the gas chamber 24 decreases, the space of the liquid chamber 22 increases by that amount.

The piston 30 is elastically supported by the elastic body 33. The elastic body 33 may press the piston 30 in a direction in which the piston 30 reduces the volume of the gas chamber 24 and increases the volume of the liquid chamber 22, that is, in a second direction. Can be. The elastic body 33 may be a compression coil spring that is elastically aligned in the longitudinal direction of the cylinder and inserted into the liquid chamber 22.

A rod 31 is connected to the piston 30 so that the piston 30 can be moved by a user's manipulation. One end of the rod 31 is connected to the piston 30, and the other end thereof is exposed to the outside of the cylinder. The rod 31 extends toward the gas chamber 24 with respect to the piston 30 and is exposed to the outside of the cylinder. And the push head 32 is installed at the end of the rod 31 exposed to the outside.

Therefore, the force that the user presses the push head 32 is transmitted to the piston 30 by the rod 31, so that the piston 30 can move in the first direction while overcoming the elasticity of the elastic body 33. have. When the force applied to the push head 32 is released, the elastic body 33 moves the piston 30 in the second direction. That is, when the user presses the pushhead 32, the volume of the liquid chamber 22 decreases and the volume of the gas chamber 24 increases, and when the user releases the pushhead 32, the volume of the liquid chamber 22 increases and the gas The volume of the chamber 24 is reduced.

The moving range of the piston 30 may be limited by the stopper 311. According to the embodiment of the present invention, the stopper 311 may be arranged on the rod 31. The stopper 311 may be disposed in the gas chamber 24. The stopper 311 is larger than the hole in the second directional end wall of the cylinder through which the rod 31 passes.

The present invention includes a second connecting portion 121 connected to the gas chamber 24 at one end, and the other end is connected to the nozzle portion 11 between the first connecting portion 111 and the discharge port 112. It is characterized in that it further comprises a gas communication path (12) forming a confluence (122). In addition, an angle at which the gas communication path 12 is connected to the nozzle unit 11 is an angle inclined toward the opposite side of the discharge port 112 based on the confluence unit 122.

In the cylinder portion corresponding to the liquid chamber 22, a first communication hole 221 serving as a passage connected to the tank part 15, and a first connection part 111 of the nozzle part 11 are connected. A second communication hole 222 serving as a passage is provided.

In the vicinity of the first communication hole 221, the first check valve 41 permits the flow of the liquid from the tank 15 toward the liquid chamber 22 and blocks the flow of the liquid in the opposite direction. Is prepared. Although the check ball structure is shown in the drawings, this is only an example, and various valves may be applicable to the valve allowing only fluid flow in one direction as described above, and the same may be applied to the second to fourth check valves to be described later. to be.

A second check valve 42 is provided in the nozzle part 11 between the second communication hole 222 and the confluence part 122. The second check valve 42 allows the flow of liquid from the second communication hole 222 toward the confluence portion 122 and blocks the flow of the liquid in the opposite direction.

In the cylinder portion corresponding to the gas chamber 24, a third communication hole 243 serving as a passage connected to the outside of the cylinder and a fourth communication hole 244 serving as a passage connected to the second connecting portion 121. ) Is prepared.

In the vicinity of the third communication hole 243, a third check valve 43 which permits the flow of gas from the outside of the cylinder 20 toward the gas chamber 24 and blocks the flow of the gas in the opposite direction. ) Is provided.

In addition, a fourth check valve 44 is provided in the gas communication path 12 between the fourth communication hole 244 and the confluence part 122. The fourth check valve 44 permits the flow of the liquid toward the confluence portion 122 in the fourth communication hole 244 and blocks the flow of the liquid in the opposite direction.

[Operation of Pump Assembly]

Hereinafter, the operation of the pump assembly will be described with reference to FIGS. 2 and 3.

First, as shown in FIG. 2, when the user pushes the push head 32 to move the piston 30 in the first direction, the liquid in the liquid chamber 22 is pressurized. Due to this pressure, the liquid in the liquid chamber 22 does not pass the first check valve 41 but passes through the second check valve 42 and is pumped as if squeezed by the nozzle unit 11. The liquid moving along the longitudinal direction of the nozzle portion 11 is discharged to the outside through the discharge port 112 without moving substantially to the gas communication path 12 that is joined in the direction opposite to the liquid moving direction. Even if a part of the liquid flows back through the gas communication path 12 and reaches the fourth check valve 44, the fourth check valve 44 is not opened, so that the liquid passes through the fourth communication hole 244. There is no backflow into the chamber 24.

Meanwhile, at the same time, when the piston 30 moves in the first direction, the space of the gas chamber 24 expands, so that the pressure of the gas chamber 24 is lowered. Then, an outside gas (air) in an atmospheric pressure having a higher pressure tries to enter the gas chamber 24, and this air passes through the third check valve 43 and passes through the third communication hole 243. Enter the chamber 24. As a result, the air pressure inside the gas chamber 24 in which the volume is expanded is in equilibrium with atmospheric pressure.

Next, as shown in FIG. 3, when the user releases the force that pushes the push head 32, the piston 30 moves in the second direction by the elastic body 33. Then, the volume inside the liquid chamber 22 expands and becomes lower than the periphery of the liquid chamber 22. Accordingly, the liquid in the tank 15 passes through the first check valve 41 and flows into the liquid chamber 22 through the first communication hole 221 to refill the liquid chamber. Since the second check valve 42 closes the second communication hole 222 well, the phenomenon that the liquid in the nozzle part 11 flows back into the liquid chamber 22 does not occur again.

At the same time, as the piston 30 moves in the second direction, the space of the gas chamber 24 is reduced, so that the pressure is increased. When the pressure inside the gas chamber 24, which was at atmospheric pressure, is high, air in the gas chamber is about to move out of the cylinder in the atmospheric pressure at a relatively low pressure. Since the third check valve 43 blocks the third communication hole 243, the air in the gas chamber passes through the fourth check valve 44 through the fourth communication hole 244 and the gas communication path 12. Discharged). The air discharged to the gas communication path 12 has the confluence part 122 toward the discharge port 112 of the nozzle part 11, so that the remaining liquid remaining at the discharge port 112 is pushed toward the discharge port to discharge the discharge port 112. Make sure no residual liquid is left in the vicinity.

According to the above-described invention, since the air in the reduced space is discharged toward the discharge port of the liquid pump when the pump is returned to its original position, the remaining liquid is removed near the discharge port, so that the nozzle port is kept clean and the discharge port is clogged without any extra effort. The phenomenon can be prevented.

Although the present invention has been described with reference to the drawings exemplified as above, the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that modifications can be made. In addition, even if the above described embodiments of the present invention while not explicitly described by describing the effect of the configuration of the present invention, it is obvious that the effect predictable by the configuration is also to be recognized.

10: pump
11: nozzle part
111: first connection portion
112: discharge port
12: gas communication path
121: second connection portion
122: confluence
13: pumping part
15: tank part
20: cylinder
22: liquid chamber
221: first communication hole
222: second communicator
24: gas chamber
243: Third Communist
244: Fourth Communist
30: piston
31: loading
311: stopper
32: pushhead
33: elastic body (coil spring)
41: first check valve
42: second check valve
43: third check valve
44: fourth check valve

Claims (3)

A pumping part 13 connected to the tank part 15 in which the liquid is stored;
A nozzle unit 11 having a first connection part 111 connected to the pumping part 13 at one end and a discharge port 112 at the other end; And
And a pump (10) provided in the pumping unit (13) to supply the liquid in the tank unit (15) to the nozzle unit (11).
The pump 10 is:
A cylinder 20 provided inside the pumping part 13;
A piston (30) accommodated in the cylinder (20) to reciprocate in the longitudinal direction of the cylinder;
A liquid chamber (22) defined by the longitudinal first space in the cylinder section defined by the piston (30);
A gas chamber (24) defined by a space in a second direction opposite to the first direction in the longitudinal direction of the cylinder defined by the piston (30);
An elastic body 33 elastically supporting the piston 30 in a direction in which the piston 30 reduces the volume of the gas chamber 24 and increases the volume of the liquid chamber 22;
A rod 31 having one end connected to the piston 30 so that an external force is applied to the piston 30 and the other end exposed to the outside of the cylinder;
A first communication hole 221 provided at the side of the liquid chamber 22 and serving as a passage connected to the tank unit 15;
A second communication hole 222 provided on the side of the liquid chamber 22 and serving as a passage connected to the first connection part 111 of the nozzle part 11;
The second end portion 121 is connected to the gas chamber 24 at one end portion, and the other end portion is joined to the nozzle portion 11 between the first connection portion 111 and the discharge port 112. A gas communication passage 12 constituting 122;
A third communication hole 243 provided at the side of the gas chamber 24 and serving as a passage connected to the outside of the cylinder;
A fourth communication hole 244 provided at the side of the gas chamber 24 and serving as a passage connected to the second connection part 121;
The first check valve 41 is provided near the first communication hole 221 and permits the flow of the liquid from the tank 15 toward the liquid chamber 22 and blocks the flow of the liquid in the opposite direction. );
It is provided in the nozzle portion 11 between the second communication hole 222 and the confluence portion 122, and allows the flow of liquid from the second communication hole 222 toward the confluence portion 122, A second check valve 42 which blocks the flow of the liquid in the opposite direction;
A third check valve provided near the third communication hole 243 and permitting the flow of gas from the outside of the cylinder 20 toward the gas chamber 24 and blocking the flow of the gas in the opposite direction ( 43); And
The flow of liquid provided between the fourth communication hole 244 and the confluence part 122 in the gas communication path 12 and toward the confluence part 122 in the fourth communication hole 244 is allowed. And a fourth check valve (44) to block the flow of the liquid in the opposite direction.
The method according to claim 1,
The rod (31) is a pump assembly provided with a stopper (311) for limiting the movement range of the piston (30).
The method according to claim 1,
The gas communication path (12) is connected to the confluence portion (122) in a form inclined to the opposite side of the discharge port (112) relative to the confluence portion (122).

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