KR102303475B1 - Pump lid for liquid container - Google Patents

Abstract

Provided by one embodiment of the present invention is a pump lid for a liquid storage container. The pump lid for a liquid storage container, according to one embodiment of the present invention, comprises: a lid body for sealing a container part in which a liquid is contained; a button part slidably coupled to the lid body, and including a liquid discharge tube connecting the outside with the inside of the container part so as to enable the liquid to be discharged; a cylinder body including a first liquid moving tube extending to a lower portion of the lid body, positioned on an inner side of the container part, allowing the liquid to move through the center thereof, and a first cylinder extending to an upper portion of the first liquid moving tube, and connected to the lid body, wherein, an inner circumferential surface of the first cylinder is formed in a cylindrical shape to store the liquid therein; a piston unit connected to the button part to move together with the same, and including a second liquid moving tube formed at the center and communicating with the liquid discharge tube, wherein a lower end portion of the piston unit is positioned in the first cylinder to compress the first cylinder such that the liquid in the first cylinder is discharged to the second liquid moving tube or the piston unit generates negative pressure in the first cylinder to suck the liquid from the first liquid moving tube; a check valve part positioned on an inner side of the first cylinder of at a lower portion of the piston unit and configured to prevent the liquid from flowing back from the first cylinder to the container part; and a pneumatic restoration part interposed between the lid body and the button part, filled with a gas and sealed, wherein when the button part is pressed, the volume of the pneumatic restoration part is reduced, and the pressure thereof is increased so that a restoration force is provided to the button part. According to the present invention, the pump lid for a liquid storage container is able to discharge a liquid even with little force.

Description

Pump lid for liquid container

The present invention relates to a pump lid for a liquid storage container, and more particularly, to a pump lid for a liquid storage container that can be easily recycled after use and can discharge a certain amount of cosmetics even with a single pressurization operation.

In general, cosmetics are made in various forms such as liquid, gel, cream, powder, etc. depending on the intended use, and the container for accommodating these cosmetics has the properties of the cosmetics contained therein. It is manufactured in various shapes and structures taking this into account. For example, liquid or gel-type cosmetics are stored and used in a pumping container or spray container that discharges a certain amount of cosmetics by a pressurizing operation, and cream-type cosmetics are stored and used in a tube container that is opened and closed with a lid.

On the other hand, the pumping container for accommodating liquid or gel-type cosmetics is largely composed of a cylindrical container and a pump lid detachably coupled to the upper part of the container to enable pumping of the cosmetics. Although the pump lid can discharge a certain amount of cosmetics contained inside the container each time, it is composed of various components such as a metal spring, a plastic actuator, a ball valve, and a hose. In particular, as the material is made of a plurality of different components, a process of disassembling and separating parts for recycling is required, which is a cumbersome process. Accordingly, an eco-type cosmetic container lid that facilitates separation and collection by forming the entire configuration of a plastic material has been proposed. It is inconvenient to use because a desired amount of pressure must be repeatedly performed for discharging.

Accordingly, there is a need for a pump lid for a liquid storage container that is easy to recycle after use and has a structure capable of discharging a certain amount of cosmetics even with a single pressurization operation.

Republic of Korea Patent No. 10-1920846 (2018. 11. 15.)

An object of the present invention is to provide a pump lid for a liquid storage container that can be easily recycled after use and can discharge a certain amount of cosmetics even with a single pressurization operation.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The pump lid for a liquid storage container according to an embodiment of the present invention for achieving the above technical problem is a lid body sealing the container part containing the liquid, and the lid body is slidably coupled to the lid body and connects the inside and the outside of the container part. A button part having a liquid discharge pipe through which the liquid is discharged by connection, a first liquid pipe extending below the lid body and located inside the container part and moving the liquid in the center, and an upper part of the first liquid pipe A cylinder body extending and connected to the lid body and including a first cylinder in which the liquid is accommodated by an inner circumferential surface having a cylindrical shape, and a second liquid connected to the button unit and moving together and communicating with the liquid discharge pipe in the center A moving pipe is formed, and the lower end is located inside the first cylinder to compress the first cylinder to discharge the liquid in the first cylinder to the second liquid pipe or to generate a negative pressure in the first cylinder to generate the first cylinder. 1 A piston unit for sucking the liquid from a liquid pipe, a check valve located inside the first cylinder under the piston unit to prevent the liquid from flowing back from the first cylinder to the container unit, and the lid body and a pneumatic restoration unit interposed between the button unit, filled with gas therein, and sealed to provide a restoring force to the button unit by decreasing the volume and increasing the pressure when the button unit is pressed.

The pneumatic restoration unit, a second cylinder formed in any one of the lid body and the button unit, is coupled to the other one of the lid body and the button unit, moves in the second cylinder, and compresses the inside of the second cylinder It may include a compression piston that

The second cylinder is formed of a hollow cylinder in which a through-hole through which the liquid discharge pipe or the second liquid pipe passes is formed in the center, and a gas-tight compression space surrounds the through-hole, and the compression piston is It is formed in a ring shape to seal the compression space and slide along the second cylinder to compress the compression space.

The second cylinder may be formed in the lid body, and the through hole into which the cylinder body is inserted may be opened in the vertical direction, and the lower end of the button may directly press the compression piston.

The pneumatic restoration unit may include a tube that is made of a flexible material and is filled with gas to compress and restore the tube.

The piston unit includes a ring-shaped first piston that is accommodated in the first cylinder and moves in the vertical direction, the outer circumferential surface is in close contact with the inner circumferential surface of the first cylinder, and a communication hole communicating with the liquid discharge pipe is formed in the center; A second piston including a compression surface sealing the communication hole from a lower portion of the first piston, a second piston extending from the compression surface and including a column passing through the communication hole, and the button portion and the second liquid in the center A moving tube is formed, and the shaft member is fixed to the column part and moves integrally and presses the first piston downward while maintaining a clearance with the first piston and may include a shaft member contacting the shaft member.

The pillar part may include a connection pipe having one side opened to the upper surface to be connected to the second liquid pipe and the other side to be opened to the side and positioned in the communication port.

The pump lid for the liquid storage container further comprises a cutout in a direction in which the button part moves in the lid body or the cylinder body, and a protrusion formed in the button part and moving along the cutout, the button The part is rotatably coupled to the lid body so that the protrusion part may be inserted or separated from the cutout part as the button part rotates.

The check valve part includes a ball positioned below the first cylinder to block the outlet of the first liquid pipe, and the ball protrudes from the first cylinder part and extends above the ball so as not to contact the ball. It may include a plurality of escape prevention protrusions to prevent separation.

According to the present invention, as the lifting force of the button part and the piston unit is generated by the compression and restoration of the gas by the pneumatic restoration part, even if there is no spring member made of metal, it is possible to pump and discharge a certain amount of liquid in a single pressing operation. In particular, by replacing the metal spring member with a plastic pneumatic restoration part, the process of disassembling and separating parts for recycling is omitted, overcoming the conventional inconvenience and inefficiency, and improving convenience and efficiency. can be improved

In addition, as the pumping operation is made with the pneumatic restoration part made of soft plastic material instead of the spring member made of rigid metal material, it is possible to discharge liquid by sensitive operation even with a small force, as well as precise lifting and lowering operation without problems such as distortion can be implemented, and product reliability can be improved.

1 is a perspective view showing a pump lid for a liquid storage container according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a pump lid for a liquid storage container of FIG. 1 .
3 is a cross-sectional view showing a pump lid for a liquid storage container cut in the longitudinal direction.
4 to 8 are operational diagrams for explaining the operation of the pump lid for the liquid storage container.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, a pump lid for a liquid storage container according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 8 .

1 is a perspective view showing a pump lid for a liquid storage container according to an embodiment of the present invention.

The pump lid 1 for a liquid storage container according to an embodiment of the present invention is detachably coupled to a tubular container portion (not shown) containing a liquid therein to pump a predetermined amount of liquid and discharge it to the outside, Here, the liquid is not limited to a simple liquid (liquid), and may include all types of gels, creams, and the like.

The pump lid 1 for liquid storage container pumps a certain amount of liquid in a single pressurization operation even without a metal spring member as the lifting force of the button part and the piston unit is generated by gas compression and restoration by the pneumatic restoration part. and discharge. In particular, by replacing the metal spring member with a plastic pneumatic restoration part, the process of disassembling and separating parts for recycling is omitted, overcoming the conventional inconvenience and inefficiency, and improving convenience and efficiency. can be improved In addition, as the pumping operation is made with the pneumatic restoration part made of soft plastic material instead of the spring member made of rigid metal material, it is possible to discharge liquid by sensitive operation even with a small force, as well as precise lifting and lowering operation without problems such as distortion can be implemented, and thus product reliability can be improved.

Hereinafter, with reference to FIGS. 2 and 3 , the pump lid 1 for a liquid storage container will be described in detail.

FIG. 2 is an exploded perspective view of the pump lid for the liquid storage container of FIG. 1, and FIG. 3 is a cross-sectional view illustrating the pump lid for the liquid storage container by cutting it in the longitudinal direction.

The pump lid (1) for a liquid storage container according to the present invention includes a lid body (10), a button part (20), a cylinder body (30), a piston unit (40), a check valve part (50), and It includes a pneumatic restoration unit (60).

The lid body 10 seals the container part containing the liquid, and may be detachably coupled to the opening side of the container part. For example, when a thread is formed on the outer peripheral surface of the opening side of the container part, the lid body 10 may be screwed to the container part by forming a thread on the inner peripheral surface of the lower end in contact with the opening side of the container part, as shown. However, the lid body 10 is not limited to being screwed to the container part, and the coupling structure of the lid body 10 and the container part may be variously modified. For example, the container part has an indentation groove formed on the outer peripheral surface of the opening side, and the lid body 10 has a hook or fitting protrusion formed on the inner peripheral surface of the lower end in contact with the opening side of the container part, so that the container part may be hooked or fitted. The lid body 10 is formed of a double cylindrical member whose center is penetrated in the vertical direction, and is spaced apart from the outer circumferential surface of the inner cylinder 10a and the inner cylinder 10a through the center and surrounds the outer circumferential surface of the inner cylinder 10a. It may consist of an outer cylinder 10b, a disk portion 10c arranged horizontally to connect between the inner cylinder 10a and the outer cylinder 10b, and a fixing member 11 accommodated in the inner cylinder 10a. . At this time, the disk portion (10c) is located in the longitudinal middle portion of the inner cylinder (10a) and the outer cylinder (10b), one end is coupled to protrude to the inner circumferential surface of the inner cylinder (10a), the fixing member 11 is supported It can form a stepping stone. For convenience of explanation, the inner cylinder 10a, the outer cylinder 10b, and the disk portion 10c have been described separately, but the inner cylinder 10a, the outer cylinder 10b, and the disk portion 10c have an integrated structure. As such, each region of the lid body 10 may be partitioned. The fixing member 11 guides the movement of the shaft member 43 to be described later while fixing the cylinder body 30 to be described later to the lid body 10, and may be formed as a cylindrical member having the center penetrated in the vertical direction. . The fixing member 11 is accommodated in the longitudinal direction in the center of the inner cylinder 10a and is supported on the above-described step, and the cylinder body 30 has an upper end that can be fitted between the step and the fixing member 11 . . However, it is not limited to a structure in which the lid body 10 and the fixing member 11 are separated, and if necessary, the lid body 10 and the fixing member 11 may be integrally formed. The lid body 10 has a button portion 20 disposed on the upper portion and the cylinder body 30 extends downward.

The button part 20 is a part that the user presses for pumping the liquid, and may be slidably coupled to the upper part of the lid body 10 . The button part 20 has a liquid discharge pipe 21 through which the liquid is discharged by connecting the inside and the outside of the container part on the inside, and the liquid discharge pipe 21 has a vertical section extending in the vertical direction from the container part, and It may include a horizontal section refracted from the section and extending in the horizontal direction toward the outside. That is, the liquid contained in the container part passes through the vertical section and the horizontal section of the liquid discharge pipe 21 in turn and is discharged to the outside. The button unit 20 slides from the lid body 10 by the pneumatic restoration unit 60, and the pneumatic restoration unit 60 will be described later in more detail.

In the liquid discharge pipe 21 , the discharge port 21a at the end of the liquid discharge pipe 21 in contact with the outside may be formed in various diameters according to the size of the sprayed droplet. For example, when the diameter of the discharge port 21a is large, the size of the sprayed droplet becomes large, and when the diameter of the discharge port 21a is small, the droplet becomes small and finely sprayed. Meanwhile, the discharge port 21a may have a structure integrally formed with the liquid discharge tube 21 , but may be a structure inserted into the liquid discharge tube 21 in a structure in which fine holes are formed.

The cylinder body 30 is in contact with the container part and serves as a medium for sucking the liquid contained in the container part and moving it toward the liquid discharge pipe 21, and includes a first liquid pipe 31 and a first cylinder 32. . The first liquid pipe 31 extends under the lid body 10 and is located inside the container, and the liquid can move in the center. The first cylinder 32 is extended to the upper portion of the first liquid pipe 31 and is connected to the lid body 10, and the inner circumferential surface has a larger cylindrical shape than the diameter of the first liquid pipe 31 to accommodate the liquid. space can be formed. That is, the liquid contained in the container unit passes through the first liquid pipe 31 and the first cylinder 32 of the cylinder body 30 in order to move to the liquid discharge pipe 21 . A portion of the first cylinder 32 located above overlaps with the lid body 10 , and the remaining portion located below is located inside the container portion like the first liquid pipe 31 .

The piston unit 40 is connected to the button unit 20 described above. The piston unit 40 helps suction, movement, and discharge of liquid, and a second liquid transfer tube 40a communicating with the liquid discharge tube 21 is formed in the center. The piston unit 40 has the upper part connected to the button part 20 and moves together, and the lower part is located inside the first cylinder 32 to compress the first cylinder 32 to release the liquid in the first cylinder 32 . The liquid may be sucked from the first liquid pipe 31 by discharging it to the second liquid pipe 40a or by generating a negative pressure in the first cylinder 32 . For example, when the button unit 20 is pressed, the piston unit 40 descends together with the button unit 20 to compress the first cylinder 32 , and as the first cylinder 32 is compressed, the first cylinder The liquid in (32) may be discharged to the second liquid pipe 40a. The liquid discharged through the second liquid pipe 40a may sequentially pass through the vertical section and the horizontal section of the liquid discharge pipe 21 to be discharged to the outside. When the button part 20 is released after the liquid is discharged, the piston unit 40 rises together with the button part 20 to generate a negative pressure in the first cylinder 32, and a negative pressure is generated in the first cylinder 32 Accordingly, the liquid contained in the first liquid pipe 31 or the container may be sucked into the first cylinder 32 . The piston unit 40 includes a first piston 41 , a second piston 42 , and a shaft member 43 .

The first piston 41 is a ring-shaped member in which a communication port 41a communicating with the liquid discharge pipe 21 is formed in the center, and the outer circumferential surface of the first cylinder 32 is in close contact with the inner circumferential surface of the first cylinder 32 . It is accommodated inside and can be moved up and down. The first piston 41 penetrates the communication port 41a and has one side in close contact with or spaced apart from the second piston 42 protruding to the lower portion of the first piston 41 to control the movement of the liquid. The second piston 42 has a disk-shaped compression surface 42a that seals the communication port 41a in the lower portion of the first piston 41, and extends upward from the compression surface 42a to form the communication port 41a. and a pillar portion 42b passing therethrough. The pillar portion 42b has a smaller diameter and a higher height than the compression surface 42a, and one side is opened to the upper surface to be connected to the second liquid pipe 40a, and the other side is opened to the side to provide a communication port (41a). It may include a connector (42c) located in the. That is, when the lower end of the first piston 41 is in close contact with the compression surface 42a, the movement of the liquid to the second liquid pipe 40a is restricted, and the lower end of the first piston 41 is separated from the compression surface 42a. When spaced apart, the liquid accommodated in the first cylinder 32 flows into the space between the first piston 41 and the compression surface 42a, passes through the side surface and the upper surface of the connection tube 42c in order, and the second liquid transfer tube 40a ) can be moved to The second piston 42 is connected to the shaft member 43 . The shaft member 43 has a second liquid pipe 40a formed in the center, the upper end is connected to the button 20, and the column 42b is fixed at the lower end. The shaft member 43 has a lower end to which the column portion 42b is fixed is inserted into the communication port 41a and protrudes above the first piston 41, moves integrally with the column portion 42b, and moves to the first piston 41 ) is pressed downward, but can be in contact with the upper end of the first piston 41 while maintaining clearance. For example, in the initial state in which the button part 20 is not pressed, the clearance between the shaft member 43 and the upper end of the first piston 41 is maintained, and the lower end of the first piston 41 is the second piston 42 . It may be disposed in close contact with the compression surface (42a) of the. At this time, when the button part 20 is lightly pressed, the shaft member 43 descends toward the first piston 41 and the clearance between the shaft member 43 and the upper end of the first piston 41 is gradually narrowed, and the shaft member As (43) descends, the second piston 42 also descends integrally so that the lower end of the first piston 41 and the compression surface 42a of the second piston 42 may be spaced apart. When the compression surface 42a is spaced apart from the lower end of the first piston 41, as described above, the liquid accommodated in the first cylinder 32 flows into the space between the first piston 41 and the compression surface 42a. It may flow in and move to the connection pipe 42c. At this time, when the button part 20 is further pressed, the shaft member 43 and the upper end of the first piston 41 descend in a state in close contact, and as the first piston 41 descends, the first cylinder 32 moves. The compressed liquid in the first cylinder 32 may be discharged to the second liquid pipe 40a through the connection pipe 42c.

A check valve unit 50 is disposed at the lower portion of the piston unit 40 . The check valve unit 50 is to restrict the backflow of the liquid from the first cylinder 32 to the container unit, and is located inside the first cylinder 32 under the piston unit 40 . The check valve unit 50 includes a ball 51 and a plurality of separation prevention protrusions 52 arranged radially around the ball 51 . The ball 51 is a spherical member, and is located on the lower part of the first cylinder 32, more specifically, on the boundary between the first cylinder 32 and the first liquid pipe 31, and the first liquid pipe Block the exit of (31). The ball 51 has a diameter larger than the outlet diameter of the first liquid pipe 31 and smaller than the inner circumferential diameter of the first cylinder 32 , and may selectively come into contact with the plurality of separation prevention protrusions 52 . Each separation prevention protrusion 52 is formed to protrude from the first cylinder 32 in the form of a free end, and extends to the upper portion of the ball 51 so as not to come into contact with the ball 51 to prevent separation of the ball 51 . For example, when the piston unit 40 rises and a negative pressure is generated in the first cylinder 32, the ball 51 moves upward and comes into contact with the plurality of separation prevention protrusions 52, thereby, the first liquid The outlet of the moving pipe 31 is opened so that the liquid contained in the first liquid moving pipe 31 or the container part may be sucked into the first cylinder 32 . When the liquid is sucked into the first cylinder 32 and the inside of the first cylinder 32 becomes atmospheric pressure, the ball 51 may descend to close the outlet of the first liquid pipe 31 .

On the other hand, between the lid body 10 and the button unit 20, the pneumatic restoration unit 60 is interposed. The pneumatic restoration unit 60 is filled with gas therein and is formed in a closed structure, so that when the button unit 20 is pressed, the volume decreases and the pressure increases, thereby providing restoring force to the button unit 20 . The pneumatic restoration unit 60 includes a second cylinder 61 formed in any one of the lid body 10 and the button unit 20, and a compression piston coupled to the other one of the lid body 10 and the button unit 20. (62). Hereinafter, the structure in which the second cylinder 61 is formed in the lid body 10 and the compression piston 62 is coupled to the button unit 20 will be described more intensively. The second cylinder 61 has a through hole 61a through which the liquid discharge pipe 21 or the second liquid pipe 40a passes is formed in the center, and a compressed space in which the gas is sealed surrounds the through hole 61a. It may consist of a hollow cylinder. More specifically, the second cylinder 61 is formed in a ring shape between the inner cylinder 10a and the outer cylinder 10b of the lid body 10, and the inner cylinder 10a into which the cylinder body 30 is inserted. The through hole 61a formed in the center may be opened in the vertical direction. Since the through hole 61a is opened in the vertical direction, it is possible to prevent the liquid discharge pipe 21 or the second liquid pipe 40a from interfering when the button part 20 is pressed or restored to its original position. The compression piston 62 is formed in a ring shape through which the center is penetrated to seal the compression space, and may move inside the second cylinder 61 to compress the inside of the second cylinder 61 . More specifically, the compression piston 62 is interposed between the inner cylinder 10a and the outer cylinder 10b, and slides along the second cylinder 61 while being fitted to the lower end of the button unit 20 to move the compression space. can be compressed. At this time, the compression piston 62 may have an inner circumferential surface in contact with the outer circumferential surface of the inner cylinder 10a and an outer circumferential surface in contact with the inner circumferential surface of the outer cylinder 10b to seal and compress the inside of the second cylinder 61 . By fitting the compression piston 62 to the lower end of the button unit 20 , when the button unit 20 is pressed, the lower end of the button unit 20 directly presses the compression piston 62 , thereby forming the second cylinder 61 . The compression space can be effectively compressed. By providing a restoring force to the button unit 20 by the pneumatic restoration unit 60 composed of the second cylinder 61 and the compression piston 62, a certain amount of liquid can be supplied with a single pressing operation even without a metal spring member as in the prior art. It can be pumped and dispensed. In particular, by replacing the metal spring member with the pneumatic restoration unit 60 made of plastic, the process of disassembling and separating parts for recycling is omitted, thereby overcoming the conventional inconvenience and inefficiency. Convenience and efficiency can be improved. In addition, as the pumping operation is performed with the pneumatic restoration unit 60 made of soft plastic material instead of the spring member made of rigid metal material, it can operate sensitively even with a small force to discharge the liquid, as well as without problems such as distortion. Product reliability can be improved because the lifting operation can be implemented precisely. However, the pneumatic restoration unit 60 is not limited to being composed of the second cylinder 61 and the compression piston 62 , and the structure of the pneumatic restoration unit 60 may be variously modified. For example, the pneumatic restoration unit 60 may be made of a flexible material and may provide a restoring force to the button unit 20 by including a tube that is filled with gas and can be compressed and restored.

In addition, the above-described cylinder body 30 or the lid body 10 has a cutout 11a cut in the direction in which the button part 20 moves, and the button part 20 is formed along the cutout 11a. A moving protrusion (not shown) may be formed. The cutout 11a and the protrusion are for preventing the liquid from being discharged to the outside when the button 20 is unintentionally pressed, and may be a kind of locking device. Hereinafter, the structure in which the cutout 11a is formed in the lid body 10 will be described with more emphasis. In the fixing member 11 of the lid body 10 , the cutout 11a is cut in the direction in which the button part 20 moves, that is, in the vertical direction, and the button part 20 is rotatable on the lid body 10 . coupled to the button portion 20, the protrusion may be inserted into or separated from the cutout portion 11a as the button portion 20 rotates. For example, when the button part 20 is rotated and the protrusion is inserted into the cutout 11a, the button part 20 is slidable from the lid body 10, so that the liquid can be pumped. Conversely, when the button unit 20 rotates and the protrusion separates from the cutout portion 11a, the sliding movement of the button unit 20 is restricted and the pumping of the liquid may be stopped.

Hereinafter, an operation of the pump lid 1 for a liquid storage container will be described in more detail with reference to FIGS. 4 to 8 .

4 to 8 are operational diagrams for explaining the operation of the pump lid for the liquid storage container.

The pump lid 1 for a liquid storage container according to the present invention is made of a metallic material as the lifting force of the button part 20 and the piston unit 40 is generated by gas compression and restoration by the pneumatic restoration part 60. Even without a spring member, a certain amount of liquid can be pumped and discharged in a single pressing operation. In particular, by replacing the metal spring member with the pneumatic restoration unit 60 made of plastic material, the process of disassembling and separating parts for recycling is omitted, overcoming the conventional inconvenience and inefficiency, and Convenience and efficiency can be improved. In addition, as the pumping operation is made with the pneumatic restoration unit 60 made of soft plastic material instead of the spring member made of rigid metal material, it is possible to discharge the liquid by sensitive operation even with a small force, of course, without problems such as distortion Product reliability can be improved because the lifting operation can be implemented precisely.

4 is a diagram illustrating an initial state in which the button unit is not pressed, and FIGS. 5 and 6 are diagrams for explaining an operation when the user presses the button unit.

In the initial state in which the button part 20 is not pressed, the compression piston 62 is positioned above the second cylinder 61 so that the volume of the second cylinder 61 is maintained to the maximum, and the liquid discharge pipe 21 is The vertical section is located outside the through hole (61a), and the second liquid pipe (40a) is located inside the through hole (61a). In addition, a clearance between the shaft member 43 and the upper end of the first piston 41 is maintained, and the lower end of the first piston 41 is disposed in close contact with the compression surface 42a of the second piston 42 , and the ball 51 ) blocks the outlet of the first liquid pipe (31). Accordingly, as shown in FIG. 4 , the liquid can be maintained in a state accommodated inside the first cylinder 32 .

When the button part 20 is lightly pressed in the state of FIG. 4, as shown in FIG. 5, the lower end of the button part 20 presses the compression piston 62 so that the inside of the second cylinder 61 is partially compressed, A portion of the vertical section of the liquid discharge pipe 21 is located inside the through hole 61a. In addition, as the shaft member 43 connected to the button part 20 descends toward the first piston 41 , the clearance between the shaft member 43 and the upper end of the first piston 41 is gradually narrowed, and the shaft member 43 . As the descending, the second piston 42 also descends integrally so that the compression surface 42a of the second piston 42 is spaced apart from the lower end of the first piston 41 . As the compression surface 42a is spaced apart from the lower end of the first piston 41, the liquid accommodated in the first cylinder 32 flows into the space between the first piston 41 and the compression surface 42a, and the connection pipe You can go to (42c).

When the button unit 20 is further pressed in the state of FIG. 5 , as shown in FIG. 6 , the compression piston 62 completely compresses the inside of the second cylinder 61 , and most of the vertical section of the liquid discharge pipe 21 . It is located inside this through hole 61a. In addition, as the shaft member 43 descends in close contact with the upper end of the first piston 41, the first cylinder 32 is compressed, and thus, all of the liquid contained in the first cylinder 32 is transferred to the connecting pipe ( 42c), passing through the second liquid transfer tube 40a in order, and discharged to the liquid discharge tube 21 .

7 and 8 are diagrams for explaining an operation when the user releases the button unit.

When all of the liquid contained in the first cylinder 32 is discharged to the outside and the button part 20 is released, as shown in FIG. 7 , the gas compressed inside the second cylinder 61 is released by the compression piston 62 It provides a restoring force in the upward direction, whereby the button portion 20 connected to the lower end of the compression piston 62 rises. As the button part 20 rises, the shaft member 43 connected to the button part 20 rises integrally, and the second piston 42 connected to the shaft member 43 also rises to the second piston 42 . of the compression surface 42a is in close contact with the lower end of the first piston 41 . When the compression surface 42a continues to rise in close contact with the lower end of the first piston 41, negative pressure is generated inside the first cylinder 32, and the ball 51 moves upward, and the first liquid pipe 31 ) is opened and the liquid contained in the first liquid pipe 31 or the container is sucked into the first cylinder 32 .

When the liquid is sucked into the first cylinder 32 and the inside of the first cylinder 32 becomes atmospheric pressure, as shown in FIG. 8 , the ball 51 descends to close the outlet of the first liquid pipe 31 and The first cylinder 32 may remain filled with liquid.

Although embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: Pump lid for liquid storage container
10: lid body 10a: inner cylinder
10b: outer cylinder 10c: disk part
11: fixing member 11a: cutout
20: button part 21: liquid discharge pipe
21a: outlet 30: cylinder body
31: first liquid pipe 32: first cylinder
40: piston unit 40a: second liquid pipe
41: first piston 41a: communication port
42: second piston 42a: compression surface
42b: pillar portion 42c: connector
43: shaft member 50: check valve part
51: ball 52: escape prevention projection
60: pneumatic restoration unit 61: second cylinder
61a: through hole 62: compression piston

Claims (9)

a lid body sealing the container part containing the liquid;
a button unit slidably coupled to the lid body and having a liquid discharge pipe for discharging the liquid by connecting the inside and outside of the container unit;
A first liquid pipe that extends under the lid body and is located inside the container part and moves the liquid in the center, extends above the first liquid pipe and connects to the lid body, and has a cylindrical inner peripheral surface to form the liquid A cylinder body including a first cylinder is accommodated;
A second liquid pipe communicating with the liquid discharge pipe is formed in the center while being connected to the button and moving together, and the lower end is positioned inside the first cylinder to compress the first cylinder to compress the liquid in the first cylinder. a piston unit for discharging to the second liquid pipe or generating a negative pressure in the first cylinder to suck the liquid from the first liquid pipe;
A check valve located inside the first cylinder under the piston unit to prevent the liquid from flowing back from the first cylinder to the container unit, and
It is interposed between the lid body and the button part, and is filled with gas and sealed therein so that when the button part is pressed, the volume decreases and the pressure rises to provide a restoring force to the button part. . According to claim 1, wherein the pneumatic restoration unit,
A second cylinder formed in any one of the lid body and the button part, and a compression piston coupled to the other one of the lid body and the button part and moving in the second cylinder to compress the inside of the second cylinder pump lid for liquid storage containers. 3. The method of claim 2,
The second cylinder consists of a hollow cylinder in which a through hole through which the liquid discharge pipe or the second liquid pipe passes is formed in the center, and a gas-tight compression space surrounds the through hole,
The compression piston is formed in a ring shape to seal the compression space and slide along the second cylinder to compress the compression space. 4. The method of claim 3,
The second cylinder is formed in the lid body and the through hole into which the cylinder body is inserted is opened in the vertical direction,
The button part is a pump lid for a liquid storage container in which the lower end directly presses the compression piston. According to claim 1,
The pneumatic restoration part is made of a flexible material and is filled with gas inside the pump lid for a liquid storage container including a tube that can be compressed and restored. According to claim 1, wherein the piston unit,
A ring-shaped first piston accommodated in the first cylinder and moving in the vertical direction, the outer circumferential surface is in close contact with the inner circumferential surface of the first cylinder, and a communication hole communicating with the liquid discharge pipe is formed in the center;
A second piston including a compression surface sealing the communication hole under the first piston, and a column extending from the compression surface and passing through the communication hole, and
It is connected to the button part and the second liquid pipe is formed in the center, and it is fixed with the pillar part and moves integrally, and it presses the first piston downward, but it includes a shaft member in contact with the first piston while maintaining play. pump lid for liquid storage containers. According to claim 6, The pillar portion,
A pump lid for a liquid storage container comprising a connection pipe having one side opened to the upper surface and connected to the second liquid pipe, and the other side being opened to the side and positioned in the communication port. According to claim 1,
In the lid body or the cylinder body, further comprising a cutout in a direction in which the button moves, and a protrusion formed in the button section to move along the cutout,
The button part is rotatably coupled to the lid body, and as the button part rotates, the protrusion part is inserted into or separated from the cutout part of the pump lid for a liquid storage container. According to claim 1, wherein the check valve unit,
A ball located below the first cylinder and blocking the outlet of the first liquid pipe;
A pump lid for a liquid storage container including a plurality of separation prevention protrusions protruding from the first cylinder part and extending above the ball so as not to come into contact with the ball to prevent separation of the ball.

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