KR200363538Y1 - Pumping device of liquid vessel - Google Patents

Abstract

According to the pumping device of the liquid storage container according to the present invention; The negative pressure hole 60 perforated on the upper wall surface of the cylinder 42 to communicate with the interior of the storage container 30, and the communication hole 71 is disposed in the cylinder 42 to communicate with the negative pressure hole 60. The communication hole 71 of the negative pressure hole blocking piston 70 and the negative pressure hole blocking piston 70 when the hollow piston 45 is slid to be drilled in the direction and wrapped around the outer circumference of the hollow piston 45. It includes an air guide groove 80 recessed in the longitudinal direction on the outer periphery of the central portion of the hollow piston 45 to communicate with.

Accordingly, the atmospheric air flows into the storage container 30 through the communication hole 71 and the negative pressure hole 60 of the negative pressure hole blocking piston 70 only when the sliding operation of the hollow piston 45 prevents the occurrence of negative pressure. On the other hand, when the hollow piston 45 is held in place, the negative pressure hole 60 is reliably blocked by the negative pressure hole blocking piston 70 to reliably prevent the contents of the storage container 30 from leaking. There are advantages to it. In addition, the foreign matter (especially moisture) from the outside also has the advantage of preventing the phenomenon that is introduced into the storage container 30 through the negative pressure hole 60 to further improve the product reliability.

Description

Pumping device for liquid storage container {PUMPING DEVICE OF LIQUID VESSEL}

The present invention relates to a pumping apparatus for a liquid storage container, and more particularly, to a liquid storage container capable of preventing the contents from leaking out or introducing foreign substances through the negative pressure hole for guiding the introduction of external air during the pumping operation. It relates to a pumping device.

In general, a liquid storage container that stores liquid or paste-like cosmetics or other contents is provided with a pumping device so as to be discharged by a predetermined amount by air pressure.

As shown in FIG. 1, the conventional pumping apparatus for a liquid storage container includes a pumping unit 10 coupled to an inlet (not shown) of the liquid storage container and having a pressure chamber 11a configured to temporarily store the liquid, and The button unit 20 is provided with a nozzle 21 for applying pressure to the pressure chamber 11a of the pumping unit 10 and spraying the pumped liquid to the outside.

The pumping part 10 is provided coaxially at the inner center of the cap housing 12 mounted at the inlet of the liquid storage container, and has a cylinder 11 having a pressure chamber 11a therein, and a pressure chamber of the cylinder 11. A coil spring 13 provided at 11a, a hollow piston 14 elastically supported at an upper end of the coil spring 13, and having a through hole 14a formed at one side thereof, and the hollow piston 14 slidably penetrates. And a cylinder cap 15 for closing the upper end thereof, a connecting pipe 16 for connecting the nozzle 21 and the hollow piston 14 of the button part 20, and a locking jaw 11b at the bottom of the cylinder 11. It is provided with a ball valve 17 of the steel sphere to be placed).

In addition, the upper portion of the cylinder 11 is formed with a negative pressure hole 18 for communicating the inside of the storage vessel with the atmosphere, in order to allow the air in the atmosphere to be introduced into the storage vessel by the pressure difference during the liquid pumping process. to be.

Accordingly, when the user presses the button unit 20, the hollow piston 14 descends along the inside of the cylinder cap 15 while overcoming the elastic force of the coil spring 13, whereby the pressure chamber of the cylinder 11 ( The liquid filled in 11a) is injected to the outside through the through hole 14a → the hollow part of the hollow piston 14 → the connecting pipe 16 → the nozzle 21.

At this time, the ball valve 17 abuts against the locking step 11b by the lowering pressure of the liquid inside the cylinder 11 to block communication between the pressure chamber 11a and the inside of the storage container.

When the user releases the button portion 20, the hollow piston 14 rises along the inside of the cylinder cap 15 by the elastic support force of the coil spring 13, and the through hole 14a is closed to block the liquid injection. A vacuum is formed in the pressure chamber 11a of the cylinder 11. Therefore, the liquid stored in the liquid reservoir flows into the pressure chamber 11a while raising the ball valve 17. In addition, the external air flows into the storage container through the negative pressure hole 18 bored in the cylinder 11, so that liquid is easily introduced into the pressure chamber 11a.

By repeatedly pressing the button unit 20, the liquid in the liquid reservoir is sprayed constantly.

However, in the conventional pumping device of the liquid storage container, the air is introduced into the storage container through the negative pressure hole 18 so that the liquid is pumped smoothly. The negative function of the liquid leakage is generated through the negative pressure hole 18. Have

That is, there is a case where the storage container is laid down during the distribution or use of the product, in which case there is a problem that a portion of the storage container flows out through the negative pressure hole 18. In addition, the conventional pumping device is mainly used in the bathroom, etc. In this case, the water is always buried in the pumping device, there is a risk that some of it may be introduced into the storage container through the negative pressure hole (18).

The present invention is to solve this problem, the purpose of the present invention is to improve the internal structure of the pumping device to facilitate the inflow of air through the negative pressure hole, while the leakage of the liquid storage container pumping device that can effectively prevent To provide.

Figure 1 shows the internal structure of the pumping device of the conventional liquid storage container.

Figure 2 is a side cross-sectional view showing the overall structure of the liquid storage container according to the present invention.

3 is a cross-sectional view showing an internal structure of the pumping apparatus according to the present invention.

FIG. 4 is an enlarged view of part IV of FIG. 3.

5 is a perspective view showing the hollow piston and the negative pressure blocking hole piston according to the present invention.

Figure 6 shows the pushbutton lowering operation of the pumping device according to the present invention.

Figure 7 shows the push button lifting operation of the pumping apparatus according to the present invention.

* Description of the symbols for the main parts of the drawings *

30. Storage container 40. Pumping device

41. Cap housing 42. Cylinder

43. Push button 44. Coil spring

45. Hollow piston 50. Pressure piston

60..Negative pressure hole 70.Negative pressure hole blocking piston

80..air guide groove 90..step

The present invention for achieving this object is;

A cylinder having a cap housing mounted at an inlet of the liquid storage container and a pressure chamber installed coaxially within the cap housing, the liquid chamber being sucked and temporarily stored therein, and having a valve disposed at the bottom thereof; The lower end is slidably accommodated in the cylinder up and down and the hollow piston is coupled to the upper push button provided with a spout; A spring for elastically supporting the hollow piston upward in the pressure chamber; A pumping apparatus for a liquid storage container having a pressure piston provided at a lower end of a hollow piston and pumping a liquid by applying pressure to a pressure chamber while lifting up and down integrally;

The pumping device includes a negative pressure hole drilled in the upper wall of the cylinder to communicate with the inside of the storage container; A negative pressure hole blocking piston disposed in the cylinder, the communication hole being radially drilled so as to communicate with the negative pressure hole, and formed in a ring shape so as to surround the outer circumference of the hollow piston; It characterized in that it comprises an air guide groove concave in the longitudinal direction on the outer periphery of the central portion of the hollow piston so as to communicate with the communication hole of the negative pressure hole blocking piston during the sliding operation of the hollow piston.

In addition, tapered grooves are provided in the circumferential direction at the inner portion of the inner and outer walls of the negative pressure hole blocking piston so that a constant gap is formed between the outer wall of the hollow piston and the inner wall of the cylinder.

Inner and outer walls upper and lower end of the negative pressure hole blocking piston is characterized in that each made of a sealing portion which is in close contact with the elastic piston outer wall and the cylinder inner wall.

In addition, the inner wall of the cylinder is characterized in that the stepped so that the negative pressure hole blocking piston is seated.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

2, the liquid A to be pumped is stored in the liquid storage container 30 to which the present invention is applied, and the inlet 31 of the liquid storage container 30 is operated by a user's manual pressing operation. A pumping device 40 for pumping and ejecting the stored liquid A is mounted.

3 and 4, the pumping device 40 according to the present invention, the cap housing 41 mounted to the inlet 31 of the storage container 30 (see Fig. 2), and the cap housing 41 Is installed inside the cylinder 42, the pressure chamber 42a is formed so that the liquid (A) is sucked and temporarily stored, and is mounted to the upper and lower portions of the cap housing 41, the push port 43a is formed on one side The button 43, the coil spring 44 which elastically supports the pushbutton 43 upwards, and the cylinder 42 are provided to be movable up and down so that the liquid A of the pressure chamber 42a (see Fig. 2). ) And a hollow piston 45 for guiding the push button 43 toward the hollow piston 45 to generate a pressure in accordance with the lifting and lowering movement of the hollow piston 45 to pump the liquid in the pressure chamber 42a toward the hollow piston 45. A pressurized piston 50 is provided.

Cap housing 41 is made of a cylindrical shape is coupled to the inlet 31 of the liquid container 30 by a screw method, for this purpose the female screw 41a is processed inside the cap housing 41.

The cylinder 42 is configured in a cylindrical shape with the upper and lower portions open, and the upper end is firmly mounted at the inner center of the cap housing 41. Accordingly, the cylinder 42 is installed coaxially in the cap housing 41, and a pressure chamber 42a in which the liquid A is sucked and temporarily stored and the coil spring 44 is disposed is formed therein. . In addition, a valve seat 42c (valve seat) is formed at the lower end portion 42b of the cylinder 42 so that the valve 46 is seated, and extends to the bottom of the storage container 30 at the bottom of the cylinder 42. Hose 47 is fitted. Therefore, the liquid A in the storage container 30 is sucked into the pressure chamber 42a of the cylinder 42 through the hose 47.

Push button 43 is mounted to the upper and lower movements in the upper portion of the cap housing 41, the communication path 43b associated with the spout 43a is formed in the longitudinal direction therein. The pushbutton 43 is always elastically supported upward through the coil spring 44. In other words, the coil spring 44 is disposed in the pressure chamber 42a of the cylinder 42 to support the push button 43 upward through the hollow piston 45.

And the hollow piston 45 is accommodated so that the lower end is slidable up and down in the cylinder 42, the upper end thereof is fitted into the communication path (43b) of the push button 43 is coupled. In addition, the lower end of the hollow piston 45 is integrally lifting and lowering is mounted is a pressure piston (50) for guiding the liquid (A) in the pressure chamber (42a) into the hollow piston (45).

That is, the pressing piston 50 is coupled to the lower outer wall of the hollow piston 45, the piston supporting member 51 is fitted into the lower end of the hollow piston 45 is seated on the edge of the pressing piston 50 do. In addition, a hole 52 for communicating the pressure chamber 42a with the inside of the hollow piston 45 is drilled in the wall surface of the piston support member 51, and at the lower end of the piston support member 51 of the coil spring 44. The upper end abuts and supports it upwards.

Accordingly, when the hollow piston 45 is lowered, the pressure piston 50 is also integrally lowered to pressurize the liquid in the pressure chamber 42a, whereby the liquid A in the pressure chamber 42a is formed by the hole 52. Through the hollow piston 45 is to be exited.

On the other hand, the liquid (A) is pumped out of the outside and at the same time the external air flows into the storage container 30, the normal operation is performed, for this purpose, the external air to the upper wall surface of the cylinder 42 for the storage container 30 Negative pressure hole (60) is guided to enter the inside.

In addition, a negative pressure hole blocking piston 70 is disposed at an upper end of the cylinder 42 to prevent the liquid A stored in the storage container 30 from escaping to the outside through the negative pressure hole 60. When described with reference to FIGS. 4 and 5 as follows.

First, the negative pressure hole blocking piston 70 is formed in a ring shape so that the communication hole 71 is drilled in a radial direction so as to communicate with the negative pressure hole 60 and wrapped around the outer circumference of the hollow piston 45. In the inner and outer wall central portions of the negative pressure hole blocking piston 70, tapered grooves 72a and 72b are provided in the circumferential direction so as to generate a predetermined gap with the outer wall of the hollow piston 45 and the inner wall of the cylinder 42, respectively. In addition, the inner and outer wall upper and lower ends of the negative pressure hole blocking piston 70 are formed of sealing parts 73a and 73b which are in close contact with the outer wall of the hollow piston 45 and the inner wall of the cylinder 42. In the embodiment of the present invention, the communication hole 71 of the negative pressure hole blocking piston 70 is formed to be opposed to form a 180 degree interval, and the tapered groove 72b even if the communication hole 71 and the negative pressure hole 60 do not exactly match. Through).

And the outer periphery of the central portion of the hollow piston 45 is provided so as to face the air guide groove 80 concave in the longitudinal direction to form a 180 degree interval. The air guide grooves 80 are configured to pass through the inside of the negative pressure hole blocking piston 70 when the hollow piston 45 is moved up and down.

Accordingly, since the sealing portions 73a and 73b of the negative pressure hole blocking piston 70 are normally kept in close contact with the outer wall of the hollow piston 45 and the inner wall of the cylinder 42, the outside air is negative pressure hole 60 Inflow into the storage container 30 through the () is surely blocked. On the other hand, in the process of the hollow piston 45 slides up and down, the air guide groove 80 opens the inside of the negative pressure hole blocking piston (70). When passed, the outside air can enter the liquid storage container 30 through the air guide groove 80, the communication hole 71 and the negative pressure hole 60.

In addition, the stepped 90 is provided on the upper inner wall of the cylinder 42 so that the negative pressure hole blocking piston 70 is seated. The stepped step 90 is provided to be stepped so that the lower end of the negative pressure hole blocking piston 70 is seated, so that the negative pressure hole blocking piston 70 is maintained in place even when the hollow piston 45 is vertically operated.

Next will be described the operation and the effects of the liquid storage container pumping device according to the present invention configured as described above.

First, as shown in FIG. 3, in the initial state of the pumping device 40, the push button 43 is raised upward by the coil spring 44, and the hose 47 is connected to the pressure chamber 42a. A small amount of liquid A sucked through is stored.

In this state, as shown in FIG. 6, when the user presses the pushbutton 43, the hollow spring 45 descends and the coil spring 44 is compressed. At this time, the pressure piston 50 is lowered together with the hollow piston 45 to pressurize the liquid in the pressure chamber 42a, whereby the pressurized liquid exits through the hole 52 of the piston support member 51. .

That is, the liquid A filled in the pressure chamber 42a of the cylinder 42 is externally provided through the hole 52 of the piston support member 51 → the hollow piston 45 → the communication path 43b → the jet port 43a. Pumped (see arrow direction in FIG. 6). At this time, the valve 46 abuts against the valve seat 42c by the liquid A lowering pressure in the pressure chamber 42a, and communication between the pressure chamber 42a and the storage container 30 is interrupted.

On the other hand, when the user releases the push button 43, as shown in Figure 7, by the restoring force of the coil spring 44, the push button 43 and the hollow piston 45 and the pressing piston 50 is gradually raised, Vacuum pressure is applied to the pressure chamber 42a.

That is, the valve 46 rises upward due to the pressure difference between the pressure chamber 42a and the inside of the storage container 30 to open the lower end portion 42b of the cylinder 42, thereby opening the liquid in the storage container 30. (A) A part is sucked into the pressure chamber 42a through the hose 47.

In addition, the air guide groove 80 passes through the negative pressure hole blocking piston 70 in the course of the hollow piston 45 is raised with the push button 43, the inside of the storage container 30 is the negative pressure hole (60) ) And the communication hole 71 of the negative pressure hole blocking piston 70 and the air guide groove 80 communicate with the atmosphere. Therefore, in the storage container 30 in which a portion of the liquid A is taken out, the volume of the external air is filled through the negative pressure hole 60 so that the pumping device 40 is maintained at an initial state.

Subsequently, when the air guide groove 80 passes completely through the negative pressure hole blocking piston 70, the sealing portions 73a and 73b of the negative pressure hole blocking piston 70 are formed on the inner wall of the cylinder 42 and the hollow piston 45. The negative pressure hole 60 is completely blocked from the outside by being kept in close contact with the outer wall.

Accordingly, when the hollow piston 5 does not slide, the negative pressure hole 60 is kept completely blocked from the air by the negative pressure hole blocking piston 70, so that leakage of contents occurs during distribution of the product. Of course, it is possible to reliably prevent the inflow of foreign matters through the negative pressure hole 60 from the outside.

In particular, the pumping device 40 of the liquid storage container 30 is often used as a shampoo container product mainly used in the bathroom. In this case, even when the pumping device 40 gets wet, the negative pressure hole blocking piston 70 prevents the inflow into the storage container 30, thereby preventing the contents of the product from being changed.

As described in detail above, according to the pumping apparatus of the liquid storage container according to the present invention; Only when the hollow piston slides, the negative pressure hole blocking piston prevents negative air from entering the air through the communication hole and the negative pressure hole to prevent negative pressure from occurring.In contrast, when the hollow piston is held in place, the negative pressure hole blocking piston Since the negative pressure hole is reliably shut off, the contents contained in the storage container can be reliably prevented from leaking.

In addition, foreign matters (especially moisture) from the outside also has the advantage of preventing the phenomenon that is introduced into the storage container through the negative pressure hole to further improve product reliability. As a result, during the use or distribution of the product, the contents of the storage container leak through the negative pressure hole or foreign matter such as moisture in addition to the air flow into the storage container can also be reliably prevented.

Claims (3)

A cap housing 41 mounted at the inlet 31 of the liquid storage container 30 and a pressure chamber 42a installed coaxially in the cap housing 41, in which liquid A is sucked and temporarily stored therein. A cylinder 42 having a valve 46 disposed thereon; A hollow piston 45 having a lower end slidably accommodated in the cylinder 42 and having a push button 43 provided with a spout 43a at an upper end thereof; A spring 44 elastically supporting the hollow piston 45 upwardly in the pressure chamber 42a; In the pumping device (40) of the liquid storage container provided with a pressure piston (50) for pumping the liquid by applying pressure to the pressure chamber (42a) while being provided at the lower end of the hollow piston (45) integrally lifting; The pumping device 40 is; A negative pressure hole 60 perforated in the upper wall of the cylinder 42 to communicate with the inside of the storage container 30; It is disposed in the cylinder 42, the communication hole 71 is drilled in the radial direction so as to communicate with the negative pressure hole 60, the negative pressure hole made of a ring shape to wrap around the outer circumference of the hollow piston 45 Blocking piston 70; Air guide groove 80 recessed in the longitudinal direction on the outer periphery of the central portion of the hollow piston 45 to communicate with the communication hole 71 of the negative pressure hole blocking piston 70 during the sliding operation of the hollow piston 45 Pumping device for a liquid storage container comprising a. The method of claim 1, Tapered grooves 72a and 72b are provided in the circumferential direction of the negative pressure hole blocking piston 70 so as to generate a predetermined gap with the inner wall of the hollow piston 45 and the inner wall of the cylinder 42, respectively. Inner and outer wall upper and lower ends of the negative pressure hole blocking piston 70 is made of a sealing portion (73a) (73b) that is in close contact with the elastic piston deformed to the outer wall of the hollow piston 45 and the inner wall of the cylinder (42), respectively. Pumping device for liquid storage containers. The method according to claim 1 or 2, Pumping device of a liquid storage container, characterized in that the stepped 90 is provided on the inner wall of the cylinder 42, the negative pressure hole blocking piston (70) is seated.