KR102172655B1 - Elastic member and pump assembly including the same - Google Patents

Abstract

The present invention relates to an elastic member capable of preventing deterioration due to repeated use. The elastic member generates elastic force while being compressed and decompressed in a longitudinal direction, and has a first length in the longitudinal direction in a steady state, a second length is a length when the elastic member of the first length is maximally compressed, and the first length is determined such that a length obtained by subtracting the second length from a third length obtained by reducing the first length by a ratio of less than a multiple is the stroke distance of a piston rod in a pump assembly.

Description

An elastic member and a pump assembly including the same TECHNICAL FIELD [0001] ELASTIC MEMBER AND PUMP ASSEMBLY INCLUDING THE SAME

The present invention relates to an elastic member and a pump assembly including the same, and more particularly, to an elastic member capable of preventing deterioration due to repeated use, and a pump assembly including the same.

In general, the pump container is configured to discharge the contents to the outside through the pumping operation of the pump assembly coupled to the upper part of the container body.It is coupled to the container body in which the contents are stored and the upper part of the container body and vacuums the inside of the container body. It consists of a pump assembly that makes it into a state and pulls up the contents by a pumping operation, and a button part that is located on the upper part of the pump assembly and moves up and down according to user pressure, and transmits pressure to the pump assembly.

Here, the pump assembly performs a pumping operation so that the contents stored in the container body are discharged to the outside, and may include a spring providing an elastic force therein for such a repeated pumping operation. In general, since the spring is made of metal, the manufacturing cost is high, and since the pump assembly is made of a different material of plastic and metal, it has to be separated and disposed of for recycling, which is not easy to recycle. there was.

The present invention has been made to solve the above problems, and an object thereof is to provide an elastic member capable of preventing deterioration due to repeated use, and a pump assembly including the same.

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

An elastic member is provided according to an embodiment of the present invention. The elastic member generates an elastic force while being compressed and decompressed in a longitudinal direction, but has a first length in the longitudinal direction in a steady state, and a second length is the elastic member having the first length Is a length at the time of maximum compression, and a length obtained by subtracting the second length from a third length reduced by a ratio of less than a multiple of the first length is the stroke distance of the piston rod in the pump assembly, the first The length is determined, and the stroke distance may be determined by the size and pumping capacity of the cylinder in the pump assembly.

In addition, the first length may be 1.7 to 4 times the stroke distance.

In addition, the second length may be 0.3 to 0.7 times the first length.

In addition, the ratio may be 0.6 to 0.8 times.

In addition, the third length may be a length in a stable state of the elastic member deformed by repeated compression applied to the elastic member of the first length.

In addition, the elastic member may be compressed to be less than or equal to the third length to be accommodated in the pump assembly.

In addition, the elastic member, the upper support; A lower support provided on a lower side of the upper support; And a connection part connecting the upper support body and the lower support body, and repeatedly forming a floor and a valley in an outward direction so as to be bent and deformed when pressed against the elastic member.

In addition, the elastic member includes a first elastic member and a second elastic member continuous in the longitudinal direction, and the lower support of the first elastic member and the upper support of the second elastic member are supported by each other, and the pump assembly It can be provided within.

In addition, the elastic member includes a first elastic member and a second elastic member continuous in the longitudinal direction, and an engaging protrusion or an engaging groove is formed downward on a lower surface of the lower support of the first elastic member, and the second A coupling groove or a coupling protrusion is formed on an upper surface of the upper support of the elastic member, and the first elastic member and the second elastic member are coupled to each other to be provided in the pump assembly.

In addition, at least one of the valleys of the elastic member may have a limiting portion protruding toward another adjacent valley, so that a compression distance of the elastic member may be limited.

In addition, the material of the elastic member is polyether ether ketone (PEEK), polycarbonate (PC), polyoxymethylene (POM), polyketone (POK), polybutyrene terephthalate (PBT), polypropylene (PP). , Polyethylene (PE), polyoxypropylene (POP), polyolefin elastomer (POE), and ethylene octene/butene polymers (Ethylene Octene/Butene Copolymers) may be included.

In accordance with an embodiment of the present invention, a pump assembly is provided. The pump assembly may include an elastic member according to an embodiment of the present invention; Cylinders with upper and lower open and hollow inside; A seal cap provided on the inner wall of the cylinder; At least a part of the sealing portion is inserted into the cylinder to suppress the rise of the seal cap; A piston rod having an inlet opening and closing by the seal cap at a lower end, and a passage connected to the inlet being formed to an upper end; And a stem coupled with the piston rod to elevate and descend, and the elastic member may be provided between the stem and the sealing portion to provide an elastic force from the sealing portion toward the stem.

In addition, the sealing portion may include a side wall in contact with the cylinder; It includes a base portion formed inward from the lower end of the side wall, and the lower end of the elastic member is supported by the base portion, and separation may be prevented by the side wall.

According to the present invention, the elastic member is made of soft plastic, thereby enabling cost reduction through a simple structure, and environmentally friendly by solving the problem of separating and disposing of other pump assemblies.

In addition, according to the present invention, the length of the elastic member is not determined directly from the stroke distance of the piston rod, but in consideration of the deformation of the elastic member by repeated compression, the compression distance of the elastic member after deformation is It can be determined to correspond to the stroke distance of. Through this, by forming the elastic member to have a sufficient margin in consideration of deterioration of the elastic member, it is possible to prevent deterioration of the performance provided by the elastic member.

Further, according to the present invention, a plurality of elastic members may be formed. That is, by combining a plurality of existing elastic members instead of changing the length of a single elastic member, cost and production economy can be improved.

In addition, according to the present invention, the elastic member is compressed to be less than a predetermined accommodation length and accommodated in the pump assembly, so that even if it is deformed while reducing the recovery rate by repeated compression, the size of the accommodation space for accommodating the elastic member does not need to be changed, The elastic member can be stably arranged.

Brief description of each drawing is provided in order to more fully understand the drawings cited in the detailed description of the present invention.
1 shows an elastic member according to an embodiment of the present invention.
2 shows an elastic member according to an embodiment of the present invention.
3A is a perspective view of a pump assembly according to an embodiment of the present invention, and FIG. 3B is a cross-sectional view of a pump assembly according to an embodiment of the present invention.
Figure 4 shows a cross-sectional view of the contents container according to an embodiment of the present invention.

Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the contents described in the accompanying drawings. In addition, a method of configuring and using an apparatus according to an embodiment of the present invention will be described in detail with reference to the contents described in the accompanying drawings. The same reference numbers or reference numerals in each drawing indicate parts or components that perform substantially the same function. For convenience described below, the vertical, left, and right directions are based on the drawings, and the scope of the present invention is not necessarily limited to the corresponding direction.

Terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. The terms are only used for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related items or any one of a plurality of related items.

The terms used in this specification are used to describe examples, and are not intended to limit and/or limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as include or have are intended to designate the existence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and one or more other features, numbers, and steps. It is to be understood that it does not preclude the possibility of the presence or addition of, operations, components, parts, or combinations thereof.

Throughout the specification, when a part is said to be connected to another part, this includes not only the case where it is directly connected, but also the case where it is electrically connected with another element interposed therebetween. In addition, when a certain part includes a certain component, it means that other components may be further included, rather than excluding other components unless specifically stated to the contrary.

The elastic member according to the embodiment of the present invention may exhibit elastic force while being compressed and decompressed in the longitudinal direction. The elastic member may perform a pumping operation of the pump assembly in the pump assembly by using the elastic force. The pump assembly may suck and discharge the contents through a pumping operation, and in this case, the discharge amount of the contents, that is, the pumping capacity of the pump assembly may be determined by the size of the cylinder in the pump assembly and the stroke distance of the piston rod. For example, the pumping capacity may be calculated by the product of the size of the cylinder and the stroke distance of the piston rod. Here, the stroke distance of the piston rod may correspond to the compression distance of the elastic member.

The elastic member may have a first length in the longitudinal direction. The first length may mean the length of the elastic member in a steady state in which the elastic member is not compressed or stretched. For example, the first length may be a value of 1.7 to 4 times the stroke distance of the piston rod. However, the present invention is not limited thereto, and the first length may be variously set depending on the material or shape of the elastic member.

The elastic member of the first length may be compressed to the second length when an external force is applied. That is, the second length is the length of the elastic member when the elastic member of the first length is maximally compressed, and the length obtained by subtracting the second length from the first length may be the (maximum) compression distance of the elastic member. For example, the second length may be a value of 0.3 to 0.7 times the first length. However, the present invention is not limited thereto, and the second length may be variously set depending on the material and shape of the elastic member.

The elastic member can be deformed by repeated compression. For example, the recovery rate of the elastic member may decrease due to repeated compression, so that the total length of the elastic member may decrease from the first length to the third length. That is, the third length is a length of the elastic member whose restoring force is deteriorated by repeated compression applied to the elastic member of the first length, and means the length of the elastic member in a stable state in which the elastic member is not compressed or elongated. I can. The third length may be determined by reducing the first length to a predetermined ratio less than one multiple. For example, the ratio may be 0.5 to 0.9 or 0.6 to 0.8 times. However, the present invention is not limited thereto, and the ratio may be variously set depending on the material and shape of the elastic member.

When an external force is applied to the elastic member deformed to the third length, the elastic member may be maximally compressed from the third length to the second length. That is, the length obtained by subtracting the second length from the third length becomes the (maximum) compression distance of the elastic member after deformation, and may also be the (maximum) stroke distance of the piston rod in the pump assembly.

Therefore, in the elastic member, the first length may be determined so that the stroke distance of the piston rod determined based on the pumping capacity standard and the cylinder size of the pump assembly becomes the compression distance.

In this way, the first length of the elastic member is not directly determined from the stroke distance of the piston rod, but in consideration of the deformation of the elastic member due to repeated compression, the compression distance of the elastic member after deformation corresponds to the stroke distance of the piston rod. So, a first length can be determined. By forming the elastic member so as to have a sufficient margin in consideration of deterioration of the elastic member, it is possible to prevent deterioration of the performance provided by the elastic member.

In one embodiment, the elastic member may be composed of a plurality. When a plurality of elastic members are combined, the first length, the second length, and the third length may be calculated for the combination of the plurality of elastic members.

In one embodiment, the elastic member may be compressed to be less than a predetermined receiving length and accommodated in the pump assembly. The receiving length can be, for example, a third length. Specifically, the elastic member, for example, is disposed in the accommodation space between the sealing part and the stem, and the accommodation space has a length within the range of (sum of the second length and the stroke distance) to the third length, The member can be partially compressed and accommodated. Even if the elastic member is compressed and accommodated, the stem, the piston rod, and the seal cap are limited in elevation by the sealing portion, so that the length of the accommodation space can be kept below the third length. In addition, even if the elastic member is deformed so that the recovery rate decreases due to repeated compression through partial compression accommodation, the size of the accommodation space for accommodating the elastic member does not need to change, and the elastic member can be stably disposed.

In one embodiment, at least a portion of the elastic member may be made of a soft plastic material. For example, polyetheretherketone (PEEK), polycarbonate (PC), polyoxymethylene (POM), polyketone (POK), polybutyrene terephthalate (PBT), polypropylene (PP), polyethylene (PE) , Polyoxypropylene (POP), elastomer, polyolefin elastomer (POE), copolymer, ethylene octene/butene polymers, and the like. However, it is not limited thereto. In this way, by using soft plastic as a material, it is possible to easily manufacture an elastic member and to reduce production cost compared to a conventional spring made of a metal material. In addition, since the weight is lighter than that of a conventional metal spring, it is possible to reduce the weight of the pump assembly and container including the elastic member, so that portability and convenience in use can be provided. In addition, it is eco-friendly by solving the problem of separation and disposal of the pump assembly from other components.

In one embodiment, the elastic member may be manufactured by injection molding. Therefore, it is possible to provide more stable performance compared to the case of blow molding or the like. For example, when the elastic member is a bellows type, it is usually manufactured by blow molding, and at this time, there is a problem that the thickness of the elastic member is not uniformly formed. However, in the case of injection molding, such a non-uniform problem does not occur, the defect rate of the elastic member is reduced, and asymmetric elasticity problem can also be solved.

1 shows an elastic member according to an embodiment of the present invention.

Specifically, FIG. 1(a) shows a perspective view of the elastic member 100, and FIG. 1(b) shows a front view of the elastic member 100.

As shown, the elastic member 100, the upper support 110; A lower support 120 provided under the upper support 110; And a connection part 130 that connects the upper support 110 and the lower support 120 and is bent and deformed when the elastic member 100 is pressed.

The upper support 110 may support the upper end of the connection part 130. When the upper support 110 is lowered when the elastic member 100 is pressed, the pressure can be transmitted to the connection unit 130, and when the pressure is released, the upper support 110 is raised by the elastic force of the connection unit 130 Can be restored. The lower supporter 120 may support the lower end of the connection part 130. The lower supporter 120 does not lift and supports the connection part 130 in the pump assembly, so that the elastic force of the connection part 130 may be directed toward the upper supporter 110.

The upper support 110 and the lower support 120 are formed with a hollow inward, so that the stem of the pump assembly may be positioned inside the elastic member 100. In this case, the upper support 110 and the lower support 120 may have, for example, a circular ring shape, but are not limited thereto.

The connection part 130 may elastically connect the upper support 110 and the lower support 120. At this time, in the connection part 130, a ridge 131 protruding outward and a valley 132 leading inward from the ridge 131 may be repeatedly formed along the length direction. When the elastic member 100 is pressed, the connecting portion 130 may be bent and deformed to generate an elastic force (ie, elastic compression). In addition, when the pressure is released in this state, the bending deformation of the connection portion 130 is released by the elastic force, and the original state can be restored.

In one embodiment, of the connection parts 130, the first connection part 130-1 and the second connection part 130-2 may be formed to face opposite directions, and the first connection part 130-1 and the first connection part 130-1 2 The connection part 130-2 may be integrally formed by connecting the corresponding valleys 132 to each other. The first connection part 130-1 and the second connection part 130-2 of the elastic member 100 may be uniformly compressed. However, this is exemplary, and one or three or more connecting portions 130 may be formed in the elastic member 100 according to an embodiment.

In one embodiment, the first inflection point 140-1 on the outermost side and the second inflection point 140-2 and the second inflection point 140-2 in the inner vertical direction of the first inflection point 140-1 on the floor 131 of the connection part 130. 3 The inflection point 140-3 may be formed. When the elastic member 100 is pressed, when the elastic member 100 is compressed, bending deformation may be performed around the first inflection point 140-1 to the third inflection point 140-3. The load according to the bending can be distributed to a plurality of inflection points 140-1, 140-2, 140-3.

In one embodiment, at least one of the valleys 132 of the elastic member 100 may be formed with a limiting portion protruding toward the other adjacent valleys 132 (in the longitudinal direction). When the elastic member 100 is compressed, the limiting portion may limit the compression distance of the elastic member 100 by contacting the adjacent bone 132 or the limiting portion of the adjacent valley 132. This is to prevent performance degradation due to excessive compression.

In one embodiment, the elastic member 100 may be composed of a plurality. That is, a plurality of elastic members 100 may be continuously disposed in the pump assembly, and each of the elastic members 100 may be supported by the upper support 110 and/or the lower support 120. For example, the elastic member 100 includes a first elastic member and a second elastic member continuous in the longitudinal direction, and the lower support of the first elastic member and the upper support of the second elastic member are supported by each other, and the pump assembly It can be provided within. As described above, the overall length of the elastic member 100 may be variously changed through a combination of a plurality of elastic members.

In one embodiment, at least one of a coupling protrusion and a coupling groove may be formed on at least one of the upper surface of the upper support body 110 and the lower surface of the lower support body 120. When the elastic member 100 is composed of a plurality, each of the elastic members 100 may be connected by a coupling between the coupling protrusion and the coupling. For example, the elastic member 100 includes a first elastic member and a second elastic member that are continuous in the longitudinal direction, and a coupling protrusion (or coupling groove) is formed downward on a lower surface of the lower support of the first elastic member. , A coupling groove (or coupling protrusion) is formed on the upper surface of the upper support of the second elastic member, so that a plurality of elastic members may be assembled in the longitudinal direction.

In one embodiment, the upper support 110, the lower support 120, and the connection part 130 may have the same or different materials. For example, the upper support 110 and the lower support 120 may have a more rigid material than the connection part 130. In addition, for example, the connection part 130 may have a material having stronger elasticity than the upper support 110 and the lower support 120.

The shape of the elastic member 100 shown in FIG. 1 is exemplary, and various shapes may be applied according to an embodiment to which the present invention is applied. For example, in FIG. 1, two connecting portions 130 are shown to be formed in opposite directions, but one or three or more connecting portions 130 may be formed in the elastic member 100 according to an embodiment. In addition, according to the embodiment, the upper support 110 and the lower support 120 are excluded from the elastic member 100, so that the elastic member 100 may include only the connection part 130.

2 shows an elastic member according to an embodiment of the present invention.

Specifically, Figure 2 (a) shows a perspective view of the elastic member 200, Figure 2 (b) shows a cross-sectional view of the elastic member 200.

The elastic member 200 of FIG. 2 is described in the same manner as the elastic member 100 of FIG. 1, and redundant descriptions are omitted below.

As shown, the connection part 230 of the elastic member 200 connects the upper support body 210 and the lower support body 220, but may be formed in a bellows type. That is, one connection part 230 is provided along the circumference of the elastic member 200, and the connection part 230 has a ridge 231 protruding outward and a valley 232 drawn inward from the ridge 231 It can be formed repeatedly along the direction to seal the side surface.

In one embodiment, the sizes of the ridges 231 and the valleys 232 in the connection part 230 may increase along the length direction. For example, the ridge 231 and the valley 232 of the connection part 230 may increase from the upper support 210 to the lower support 220. As it is formed larger toward the lower support body 220, the elastic member 200 may be more stably disposed in the pump assembly. However, this is exemplary, and for example, the sizes of the ridges 231 and the valleys 232 of the connection part 230 may increase from the lower support 220 to the upper support 210. Depending on the embodiment, the elastic member 200 may be manufactured by injection molding, and at this time, the size of the floor 231 and the valley 232 of the elastic member 200 increases in a specific direction, The mold can be easily separated.

In one embodiment, at least one of the upper support body 210 and the lower support body 220 may be provided with at least one air passage through which air is released when the elastic member 200 is compressed. The air passage may be formed by protruding and/or depressing at least one of an upper surface of the upper support 210 and a lower surface of the lower support 220 in the longitudinal direction. When the protruding and/or recessed regions are formed to correspond to each other, they may function as a coupling protrusion and/or a coupling groove.

The shape of the elastic member 200 shown in FIG. 2 is exemplary, and various shapes may be applied according to an embodiment to which the present invention is applied.

3A is a perspective view of a pump assembly according to an embodiment of the present invention, and FIG. 3B is a cross-sectional view of a pump assembly according to an embodiment of the present invention.

The pump assembly 300 of FIGS. 3A and 3B is shown to include the elastic member 100 of FIG. 1, but this is for simplicity of description, and the elastic member 200 of FIG. 2 or another implementation of the present invention An elastic member according to an example may be provided in the pump assembly 300.

3A and 3B, the pump assembly 300 is for receiving an external force from a user, causing a pressure change therein, and introducing and discharging contents through this, specifically, a cylinder 310, It may include a seal cap 320, a sealing portion 330, a piston rod 340, a stem 350, and an elastic member 100.

The cylinder 310 may be penetrated up and down to provide a space through which contents are introduced and discharged. The cylinder 310 is located inside the spout portion of the container (not shown), but has seating blades outwardly, so that it can be seated on the spout portion of the container. The lower end of the cylinder 310 may extend toward the inside of the container, and an inlet communicating with the container may be formed. A valve may be provided at the inlet or adjacent to the inlet. The valve is a non-return valve, and the inlet is closed when the internal pressure of the cylinder 310 is positive, and the inlet can be opened when the internal pressure of the cylinder 310 changes to negative pressure.

The seal cap 320 is for opening and closing the piston rod 340, and the outer surface may be in close contact with the cylinder 310 and the inner surface may be in close contact with the piston rod 340. The inner bottom of the seal cap 320 is in close contact with the support of the piston rod 340 to seal the inlet of the piston rod 340, and when the piston rod 340 descends from the seal cap 320, the seal cap ( As the lower end of the 320 is moved away from the support portion of the piston rod 340, the inlet is opened to communicate with the inside of the cylinder 310.

The sealing part 330 is coupled to the upper end of the cylinder 310 and may be configured such that the lower end extends to the inside of the cylinder 310. Specifically, the sealing portion 330, the side wall in contact with the cylinder 310; It may include a base formed inward from the lower end of the side wall. The rise of the seal cap 320 may be suppressed by the bottom surface of the base portion (or a protrusion formed on the bottom surface of the base portion). In addition, the lower end of the elastic member 100 may be supported on the upper surface of the base portion, and external separation of the elastic member 100 may be prevented by the sidewall. Depending on the embodiment, the lower end of the elastic member 100 may be disposed in close contact with the sidewall.

In one embodiment, at least one lower lead may be formed on the upper surface of the base portion. As the lower lead contacts the lower end of the elastic member 100, an air passage may be formed between the lower leads. When the elastic member 100 is implemented in a bellows type, compression and expansion of internal air generated when the elastic member 100 is compressed and decompressed may be eliminated by the air passage.

The piston rod 340 is provided inside the cylinder 310, and the lower side is surrounded by the seal cap 320, and the upper side may be connected to the stem 350. The piston rod 340 has a hollow tube shape, and an inlet opening and closing by a seal cap 320 is formed on the lower side of the piston rod 340, and the contents introduced through the inlet flow out on the upper side of the piston rod 340 An outlet can be formed. In addition, a receiving portion is formed at the lower end of the piston rod 340, and when the inner bottom of the seal cap 320 is in close contact with the receiving portion, the inlet may be sealed from the inner space of the cylinder 310. The piston rod 340 may move in a vertical direction within the cylinder 310 by the stem 350. When the piston rod 340 moves downward, the inlet port is opened while the lower end of the inner surface of the seal cap 320 is separated from the receiving portion, so that the contents of the cylinder 310 may flow into the piston rod 340. If the piston rod 340 continues to move, the contents may be discharged through the outlet and then discharged through the stem 350 through the discharge hole of the nozzle 430. When the piston rod 340 moves upward, the cylinder 310 may seal the inlet of the piston rod 340, and a negative pressure is generated inside the cylinder 310, so that the contents in the container part 410 310) Can flow inside.

The stem 350 may be raised and lowered together with the piston rod 340 by coupling the piston rod 340. Specifically, the stem 350, for example, through a nozzle 430, etc., while descending when an external force is applied, and lowering the piston rod 340, and when the external force is removed, while rising, the piston rod 340 You can raise it. The upper end of the stem 350 may be formed with a wing portion protruding outward along the circumference. The upper end of the elastic member 100 may be supported by the bottom surface of the wing part. The length of the accommodation space of the elastic member 100 may be defined by the length from the bottom surface of the wing part to the upper surface of the base part of the sealing part 330.

In one embodiment, a downward bent portion may be formed outside the wing portion. Separation of the elastic member 100 may be prevented by the downward bent portion.

In one embodiment, at least one upper lead may be formed on the bottom surface of the wing portion. As the upper lead contacts the upper end of the elastic member 100, an air passage may be formed between the upper leads. When the elastic member 100 is implemented in a bellows type, compression and expansion of internal air generated when the elastic member 100 is compressed and decompressed may be eliminated by the air passage.

The elastic member 100 is for restoring the position of the piston rod 340, and the lower support 120 is supported by the sealing part 330 (for example, the upper surface of the base, etc.), and the upper support 110 It can be supported by the stem 350. Here, the stem 350 has a lower end coupled to the piston rod 340 and formed vertically through, so that the contents introduced from the piston rod 340 can move upward. When the user presses the pump assembly 300, the upper support 110 and the stem 350 move downward, and the connection part 130 may be compressed. At this time, the piston rod 340 coupled to the stem 350 may move downward together. In addition, when the user releases the pressure, the elastic force of the connection part 130 may restore the upper support 110 and the stem 350 to the upper side. At this time, the piston rod 340 coupled to the stem 350 may move upward together. In this case, the elastic member 100 may have a first length, and may be deformed into a third length by repeated elastic compression in the pump assembly 300. The elastic member 100 of the third length may be compressed to a second length, and the length obtained by subtracting the second length from the third length may be the compression distance of the elastic member 100 and the stroke distance of the piston rod 340. have.

In one embodiment, the length from the bottom surface of the wing portion to the top surface of the base portion of the sealing portion 330 may have a length equal to or less than the third length. That is, the elastic member 100 has a first length, but is compressed to a third length or less, and may be accommodated in the pump assembly 300. The elastic member 100 is compressed and received, so that the elastic member 100 generates an elastic force on the stem 350, the piston rod 340 and the seal cap 320, but the stem 350, etc. Ascending may be limited, and thus, the elastic member 100 may be maintained in a compressed state less than or equal to the third length. In addition, even if the elastic member 100 is deformed while the recovery rate decreases due to repeated compression through such compression accommodation, the size of the accommodation space for accommodating the elastic member 100 does not need to be changed, and the elastic member 100 is stable. Can be placed as

Figure 4 shows a cross-sectional view of the contents container according to an embodiment of the present invention.

Referring to FIG. 4, the content container 400 may include a container part 410, a head part 420, a nozzle 430, and a pump assembly 300.

The container part 410 may provide an accommodation space in which the contents are accommodated. The contents contained in the container part 410 may be discharged to the outside through a nozzle 430 and the like and used by a user. Here, the contents may be, for example, cosmetics (ie, cosmetics) or drugs, but are not limited thereto, and substances of various types or ingredients that can be accommodated in the container part 410 and discharged through the nozzle 430 It may include. The formulation of the contents, such as liquid, gel, and powder, may also vary. In addition, although the container part 410 is shown as a bottle type, this is exemplary, and various types of container parts 410 such as a tube and a tottle may be applied.

A pump assembly 300 (eg, a wing portion of the cylinder 310) may be seated on the upper end of the container part 410. The contents accommodated in the container part 410 by the pump assembly 300 may be discharged to the outside. The head portion 420 may be coupled to the outside of the spout portion of the container portion 410. The head part 420 may have a space in which the pump assembly 300 is provided inside and/or outside, and may provide a space in which a part of the nozzle 430 can move, and the head part 420 and the container The pump assembly 300 may be pressurized and fixed through the coupling of the parts 410.

The nozzle 430 may receive an external force from a user and transmit it to the pump assembly 300, and discharge contents discharged from the pump assembly 300 to the outside. The nozzle 430 may move up and down by applying an external force from a user to the upper side, and may contact the piston rod 340 to the lower side. The lifting of the nozzle 430 may cause the lifting of the piston rod 340.

As described above, although the embodiments have been described by the limited embodiments and drawings, various modifications and variations are possible from the above description by those of ordinary skill in the art. In addition, each embodiment can be operated in combination with each other as needed. Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the following claims.

100, 200: elastic member 110, 210: upper support
120, 220: lower support 130, 230: connection
130-1: first connection part 130-2: second connection part
131, 231: floor 132, 232: goal
140-1: first inflection point 140-2: second inflection point
140-3: third inflection point 300: pump assembly
310: cylinder 320: seal cap
330: sealing portion 340: piston rod
350: stem 400: contents container
410: container part 420: head part
430: nozzle

Claims (13)

As an elastic member,
Compression and decompression in the longitudinal direction generate elastic force, but have a first length in the longitudinal direction in a steady state,
The elastic member is maximally compressed to the second length,
In the stable state by repeated compression applied to the elastic member, the elastic member is deformed to a third length obtained by reducing the first length by a ratio of less than one,
The first length is determined so that the distance at which the elastic member after the deformation is compressed to the second length in the pump assembly becomes a stroke distance of the piston rod in the pump assembly,
The stroke distance is determined by the size and pumping capacity of the cylinder in the pump assembly,
The elastic member, wherein the stroke distance and the pumping capacity of the pump assembly remain the same over before and after the deformation of the elastic member. The method of claim 1,
The first length is 1.7 to 4 times the stroke distance, the elastic member. The method of claim 1,
The second length is 0.3 to 0.7 times the first length, the elastic member. The method of claim 1,
The ratio is 0.6 to 0.8 times, the elastic member. The method of claim 1,
The third length is a length of a stable state of the elastic member deformed by repeated compression applied to the elastic member of the first length. The method of claim 1,
The elastic member is compressed to be less than the third length and accommodated in the pump assembly. The method of claim 1,
The elastic member, the upper support; A lower support provided on a lower side of the upper support; And a connecting portion connecting the upper support body and the lower support body and having a floor and a valley repeatedly formed in an outward direction so as to be bent and deformed when the elastic member is pressed against the elastic member. The method of claim 7,
The elastic member includes a first elastic member and a second elastic member continuous in the longitudinal direction, and the lower support of the first elastic member and the upper support of the second elastic member are supported by each other, and provided in the pump assembly Being, an elastic member. The method of claim 7,
The elastic member includes a first elastic member and a second elastic member continuous in the longitudinal direction, and an engaging protrusion or an engaging groove is formed downward on a lower surface of the lower support of the first elastic member, and the second elastic member The upper surface of the upper support of the coupling groove or coupling protrusion is formed, the first elastic member and the second elastic member are coupled to each other and provided in the pump assembly, the elastic member. The method of claim 7,
At least one of the valleys of the elastic member is formed with a limiting portion protruding toward another adjacent valley, thereby limiting a compression distance of the elastic member. The method of claim 1,
The material of the elastic member is polyether ether ketone (PEEK), polycarbonate (PC), polyoxymethylene (POM), polyketone (POK), polybutyrene terephthalate (PBT), polypropylene (PP), polyethylene. An elastic member comprising at least one of (PE), polyoxypropylene (POP), polyolefin elastomer (POE), and ethylene octene/butene polymers (Ethylene Octene/Butene Copolymers). The elastic member according to any one of claims 1 to 11;
Cylinders with upper and lower open and hollow inside;
A seal cap provided on the inner wall of the cylinder;
At least a part of the sealing portion is inserted into the cylinder to suppress the rise of the seal cap;
A piston rod having an inlet opening and closing by the seal cap at a lower end, and a passage connected to the inlet being formed to an upper end; And
It is coupled to elevate with the piston rod and includes a stem,
The elastic member is provided between the stem and the sealing portion, and provides an elastic force from the sealing portion toward the stem, a pump assembly. The method of claim 12,
The sealing part may include a side wall in contact with the cylinder; Including a base formed inward from the lower end of the side wall,
The lower end of the elastic member is supported by the base portion, the separation is prevented by the side wall, the pump assembly.

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