WO2021206254A1

WO2021206254A1 - Pump cap

Info

Publication number: WO2021206254A1
Application number: PCT/KR2020/015951
Authority: WO
Inventors: 이경창
Original assignee: 주식회사 삼화
Priority date: 2020-04-07
Filing date: 2020-11-13
Publication date: 2021-10-14
Also published as: KR20210124741A

Abstract

A pump cap according to an aspect of the present invention comprises: a cylinder having an inner space to which content is introduced; a piston moving up or down in the inner space and having an inlet hole capable of communicating with the inner space; a valve which is in contact with each of the inner circumferential surface of the cylinder and the outer circumferential surface of the piston and opens or closes the inlet hole while moving according to the up and down motion of the piston; a rod connected to and communicating with the upper part of the piston and protruding to the outside of the cylinder; an upper cap disposed outside the cylinder; and an elastic member provided with an elastic body disposed at the upper cap, an insertion ring in which the rod is inserted, and a support member which connects the elastic body and the insertion ring and which is deformable to provide elastic force for pressing the rod upward.

Description

pump cap

The present invention relates to a pump cap having a simple configuration and easy recycling.

In cosmetic containers, etc., the pump cap is coupled to an upper inlet of a container for storing liquid contents such as cosmetic liquid, and serves to discharge and spray the contents to the outside by a fixed amount. When the user presses down the nozzle corresponding to the button to spray the liquid content, the content injected into the pump cap is pressurized, rises along the discharge passage, and is sprayed through the nozzle. And when the pressure on the nozzle is released, the discharge passage is mechanically closed by the rise of the nozzle, and as the pressure inside the pump is lowered, the contents are introduced from the container to supplement it.

Such a pump cap is used for spraying various contents such as perfume and cosmetics as well as shampoo, air freshener, and insecticide. In particular, it is possible to discharge the contents by a single nozzle pressurization, and since the contents are not exposed to external air, they are convenient to use and thus their use is increasing.

Korean Patent No. 1963619 discloses a pump cap of a spray pump. Since the pump cap disclosed in the prior art document includes a nozzle, a nozzle cap, a cap cover, a cap, a valve, a valve spring, a housing cover, a piston spring, a piston, a guide, a disk, a housing, etc., the configuration is complicated and manufacturing is difficult. has In addition, the conventional pump cap includes a valve spring and a piston spring formed of a metal material, which makes recycling difficult, unlike other parts made of plastic. In particular, in recent years, as interest and necessity for environmental protection increase, the demand for easily recyclable pump caps is increasing, but the conventional pump caps do not satisfy such demand.

Accordingly, the present invention has been derived to solve the above-described problems, and an object of the present invention is to provide a pump cap with a simple structure and easy recycling and separate collection.

Other objects of the present invention will become clearer through the examples described below.

A pump cap according to an aspect of the present invention includes a cylinder having an inner space into which contents are introduced, a piston having an inlet hole that can elevate and lower in the inner space and communicate with the inner space, and the inner circumferential surface of the cylinder and the piston A valve capable of opening and closing the inlet hole while being in contact with the outer circumferential surface and moving along the elevating and lowering of the piston, a rod coupled to and communicating with the upper part of the piston and protruding to the outside of the cylinder, and an upper cap positioned outside the cylinder; , an elastic body positioned on the upper cap, an insertion ring into which the rod is inserted, and an elastic member having a support member connecting the elastic body and the insertion ring and providing an elastic force for pressing the rod upward by deformation.

The pump cap according to the present invention may have one or more of the following embodiments. For example, one end of the support member may be connected to the upper portion of the elastic body and the other end may be connected to the outer circumferential surface of the insertion ring. And the support member may have a straight or curved shape.

The rod has a rod head, and the insert ring can be caught on the rod head.

According to the problem solving means of the present invention as described above, various effects including the following items can be expected. However, the present invention is not established only when all of the following effects are exhibited.

The present invention can provide a pump cap with a simple structure and easy recycling and separate collection.

1 is a cross-sectional view illustrating a pump cap according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a state in which the rod and the piston are lowered in FIG. 1 .

3 is a plan view illustrating an elastic member applied to FIG. 1 .

4 is a cross-sectional view of a pump cap to which an elastic member according to a second embodiment of the present invention is applied.

5 is a cross-sectional view of a pump cap to which an elastic member according to a third embodiment of the present invention is applied.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numbers regardless of the reference numerals, and duplicates thereof A description will be omitted.

1 is a cross-sectional view illustrating a pump cap 100 according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating a state in which the rod 110 and the piston 120 are lowered in FIG. 1 . And FIG. 3 is a plan view illustrating the elastic member 170 applied to FIG. 1 .

1 to 3 , the pump cap 100 according to this embodiment uses an elastic member 170 made of plastic resin or silicone, instead of a conventional coil spring made of a metal material. do it with The elastic member 170 provides an elastic force by bending the support member 174 having one end connected to the elastic body 172, and when the external force is removed, the rod 110 and the piston 120 are pressed upward while being elastically restored. In this way, recycling and separation and collection are facilitated by forming the elastic member 170 of the same material as other parts of the pump cap 100 .

The pump cap 100 according to the first embodiment includes a rod 110 , a piston 120 , a valve 130 , a shoulder 140 , a cylinder 150 , a disk 160 , an elastic member 170 and an upper cap. Since 200 is included, the structure is simplified compared to the conventional pump cap, so it is easy to manufacture and has the advantage of lowering the manufacturing cost.

The rod 110 has a hollow cylindrical shape, and the rod head 112 has a structure in which the rod head 112 protrudes outwardly at the upper end thereof. A step is formed around the lower portion of the rod head 112 , and the step is in contact with the elastic member 170 . And both the upper and lower portions of the rod 110 are open. A button (not shown) of the pump is coupled to the upper portion of the rod 110 , and a portion of the valve 130 and the piston 120 are inserted in the lower portion.

A coupling protrusion 114 is formed on the inner circumferential surface of the rod 110 . The coupling protrusion 114 is inserted into the coupling groove 124 formed around the piston 120 inserted into the rod 110, whereby the rod 110 and the piston 120 are integrally raised or lowered. .

The piston 120 includes a piston body 122 that is inserted into the rod (110). The piston body 122 has a hollow cylindrical shape and its upper end is open and communicates with the inside of the rod 110 . And an inlet hole 126 is formed around the piston body 122 . The valve 130 may be in close contact with the periphery of the inlet hole 126 to close the inlet hole 126 .

A piston head 128 is formed at the lower end of the piston body 122 . The piston head 128 is a portion having a larger diameter than the piston body 122 , and is caught by the valve 130 when the piston 120 rises so that the valve 130 also rises.

A certain interval is formed between the lower end of the rod 110 and the valve 130 (see FIG. 1 ). Therefore, when the rod 110 descends, it descends with the valve 130 while in contact with the valve 130 after descending by the interval. In this way, since the valve 130 starts descending after a predetermined interval after the rod 110 starts descending, the inlet hole 126 may be opened from the valve 130 .

The valve 130 is in close contact with the outer peripheral surface of the piston body 122 . The valve 130 includes a piston coupling part 132 and a cylinder coupling part 134 .

The piston coupling part 132 is in close contact with the outer circumferential surface of the piston body 122 and has a hollow cylindrical shape. The piston coupling part 132 closes the inlet hole 126, and when the piston 120 descends, it descends with a slight delay compared to the piston 120 so that the inlet hole 126 can be opened for a certain time. . And the upper portion of the piston coupling portion 132 is inserted into the gap formed between the rod 110 and the piston (120).

The cylinder coupling part 134 has a larger diameter than that of the piston coupling part 132 and is disposed around the piston coupling part 132 . The cylinder coupling part 134 also has a hollow cylindrical shape, and its outer circumferential surface is in close contact with the inner circumferential surface of the cylinder 150 . The lowering of the valve 130 is delayed despite the lowering of the piston 120 by the cylinder coupling part 134 .

As such, when the piston 120 descends, the valve 130 descends with a slight delay by the frictional force against the inner circumferential surface of the cylinder 150 . For this reason, the inlet hole 126 of the piston 120 is opened, and the content (not shown) flowing into the inner space 154 is introduced into the interior of the piston 120 through the inlet hole 126 . And when the piston 120 rises, the valve 130 is caught by the piston head 128 and rises together with the piston 120 .

The shoulder 140 has a shoulder body 142 inserted into the open upper part of the cylinder 150 . The shoulder body 142 has a hollow cylindrical shape and the rod 110 is inserted therein. And around the shoulder body 142, the shoulder flange 144 projects outward. In addition, at the end of the shoulder flange 144, the shoulder circumferential surface 146 is formed to protrude downward. The shoulder circumferential surface 146 is in contact with the upper outer peripheral surface of the cylinder 150 and the lower end thereof is in contact with the upper surface of the cylinder flange 152 .

The cylinder 150 is inserted into the upper inlet of the container (not shown) in which the contents are stored. And the cylinder 150 is provided with an inner space 154 into which the contents are introduced, and the piston 120 and the valve 130 are positioned in the inner space 154 to move up and down.

The cylinder 150 has a hollow cylindrical shape, and both upper and lower portions thereof have an open structure. And a cylinder flange 152 protrudes outwardly around the cylinder 150 . The cap step 202 of the upper cap 200 is positioned on the cylinder flange 152 .

A seating step 156 having a reduced diameter is formed inside the cylinder 150 . And the disk 160 may be located on the seating step 156 . The disk 160 is opened or closed by the pressure difference between the inner space 154 and the container, and the structure thereof is disclosed by Korean Patent No. 1975847 and the like, so a detailed description thereof will be omitted.

The elastic member 170 serves to upwardly press the rod 110 while being positioned between the rod head 112 and the upper cap 200 . That is, when an external force is applied, the elastic member 170 is elastically deformed while the support member 174 is bent (see FIG. 2 ), and when the external force is removed, the support member 174 is restored to its original shape while the rod 110 . press upwards.

The elastic member 170 includes an elastic body 172 , a support member 174 and an insertion hole 176 .

The elastic body 172 has a hollow cylindrical shape, and both upper and lower portions thereof have an open structure. And at the upper end of the elastic body 172, a plurality of support members 174 are integrally formed with the same spacing. The outer peripheral surface of the elastic body 172 is in contact with the inner peripheral surface of the upper cap (200). And the lower end of the elastic body 172 is located on the cap stepped (202).

The support member 174 serves to connect the elastic body 172 and the insertion ring 176 and provide an elastic force. That is, the support member 174 may be formed of a general plastic resin, and when an external force is applied, it is elastically deformed while bending downward (see FIG. 2 ). And when the external force is removed, it rises while elastically restored.

The support member 174 of the elastic member 170 according to the present embodiment may have a linear shape or a curved shape with a large radius of curvature, and may be formed to be inclined upwardly in the direction of the insertion ring 176 from the elastic body 172 .

The thickness, number, and spacing of the support members 174 may be changed according to the size of the container to which the pump cap is coupled, the type of contents, the discharge amount at a time, and the like.

The other end of the support member 174 is connected to the outer peripheral surface of the insertion ring (176). And the rod 110 is inserted into the insertion ring 176, the step formed on the outer peripheral surface of the rod head 112 is caught by the insertion ring (176).

The elastic body 172 , the support member 174 , and the insertion hole 176 of the elastic member 170 may be made of the same plastic resin material as other parts of the pump cap 100 . For this reason, the pump cap 100 according to the present embodiment can be easily separated and collected.

The upper cap 200 is coupled to the upper portion of the cylinder 150 . The upper cap 200 includes a first space 204 in which the elastic member 170 is located, and a second space 206 coupled to a container (not shown). And a cap step 202 is formed between the first space 204 and the second space 206 .

The cap step 202 is located on the upper part of the cylinder flange 152, and the elastic body 172 is positioned on the upper part.

An elastic member 170 is positioned in the first space 204 corresponding to the upper portion of the cap step 202 . The outer peripheral surface of the elastic body 172 may be in close contact with the inner peripheral surface of the first space 204 .

A coupling screw thread 208 is formed on the inner circumferential surface of the second space 204 corresponding to the lower portion of the cap step 202 . The coupling thread 208 may be threaded into a thread (not shown) formed at the mouth of the container. A gap is formed between the inner circumferential surface forming the second space 204 and the outer circumferential surface of the cylinder 150, and the inlet of the container is inserted into the gap.

4 to 5 are cross-sectional views illustrating

elastic members

180 and 190 according to another embodiment of the present invention.

Referring to FIG. 4 , the elastic member 180 includes a support member 184 having a concave curved shape. And the elastic member 180 may be integrally formed by a general plastic material. Since the configuration and role of the elastic member 180 according to the present embodiment are the same as those of the elastic member 170 according to the first embodiment, a detailed description thereof will be omitted.

Referring to FIG. 5 , the elastic member 190 has a curved support member 194 in which a concave portion and a convex portion are connected. And the elastic member 190 may be integrally formed by a general plastic material. Since the configuration and role of the elastic member 190 according to the present embodiment are the same as those of the elastic member 170 according to the first embodiment, a detailed description thereof will be omitted.

In this way, the elastic member according to the present invention may be provided with a support member having various shapes such as a straight line or a curved line.

Although the above has been described with reference to one embodiment of the present invention, those of ordinary skill in the art can variously change the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that modifications and variations are possible.

Claims

A cylinder having an internal space into which the contents are introduced;

a piston ascending and descending in the inner space and having an inlet hole that can communicate with the inner space;

a valve capable of opening and closing the inlet hole while moving according to the elevation of the piston while in contact with the inner circumferential surface of the cylinder and the outer circumferential surface of the piston;

a rod coupled to and communicating with the upper part of the piston and protruding to the outside of the cylinder;

an upper cap positioned outside the cylinder; and

An elastic member including an elastic body positioned on the upper cap, an insertion ring into which the rod is inserted, and a support member connecting the elastic body and the insertion ring and providing an elastic force for upwardly pressing the rod by deformation pump cap.
According to claim 1,

One end of the support member is connected to the upper portion of the elastic body and the other end is connected to the outer peripheral surface of the insert ring pump cap.
According to claim 1,

The support member is a pump cap, characterized in that it has a straight or curved shape.
According to claim 1,

The rod includes a rod head, and the insertion ring is engaged with the rod head.