CN216685573U

CN216685573U - Spring for pump head distributor

Info

Publication number: CN216685573U
Application number: CN202220196177.3U
Authority: CN
Inventors: 金善秀; 郑万奎
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-07
Anticipated expiration: 2032-01-25

Abstract

The utility model discloses a spring for a pump head distributor, which is formed by a nonmetal material with compressed or stretched elastic restoring force and comprises an upper ring and a lower ring; and a compound ring which is connected between the upper ring and the lower ring in a zigzag laminated manner and provides a compressive or tensile elastic restoring force; in the multiple circular ring, adjacent two connection rings are connected from each end to form an inclination, but consecutive connection rings may be alternately connected at one side and the other side in the width direction of the spring; in the compound ring, the part connected with two adjacent connecting rings can comprise two adjacent connecting rings and a first elastic restoring force strengthening part for strengthening the elastic restoring force; the utility model is formed by replacing metal materials with non-metal materials with elastic restoring force, and can be recycled without separating a pump head distributor.

Description

Spring for pump head distributor

Technical Field

The utility model belongs to the technical field of springs of pump head dispensers, and particularly relates to a spring for a pump head dispenser.

Background

Generally, a Pump dispenser (Pump dispenser) is a device for discharging a certain amount of gas, liquid, or other contents filled in a sealed container by pressing, and is suitable for various sealed containers for storing cosmetics, perfumes, pharmaceuticals, foods, and the like.

When a user applies an external force to the pump head dispenser, the contents of the interior of the container combined with the pump head dispenser may be discharged to the outside; on the other hand, the pump head dispenser is equipped with a spring, and the deformed pump head dispenser can be restored to an original state when the user releases the external force.

However, the spring is formed of a metal material. Therefore, when the pump head is to be recycled, the metal spring in the pump head needs to be disassembled; however, since the pump head has a complicated structure, there is a problem in that it is difficult for a user to disassemble the metal spring present in the pump head.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a spring for a pump head dispenser, which is an elastic component made of non-metal materials with elastic restoring force.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a spring for a pump head dispenser, the spring being formed of a non-metallic material having a compressive or tensile elastic restoring force and comprising an upper ring, a lower ring; and a complex ring connected between the upper ring and the lower ring in a zigzag lamination to provide a compressive or tensile elastic restoring force.

Preferably, in the multiple circular ring, adjacent two connection rings are connected from each end to form an inclination, but consecutive connection rings may be alternately connected at one side and the other side in the width direction of the spring.

Preferably, the multiple ring may include a first elastic restoring force reinforcing portion, which reinforces an elastic restoring force, at a portion where two adjacent connection rings are connected.

Or, in the plurality of connecting rings, a first connecting ring connected with the upper ring is combined with the upper ring to reinforce a second elastic restoring force strengthening part of the elastic restoring force; and a third elastic restoring force strengthening part which is combined with the second connecting ring connected with the lower ring and the lower ring in the compound ring and strengthens the elastic restoring force.

Alternatively, the upper ring, the lower ring and the compound ring are provided with a central bore through which at least a portion of the pump head dispenser valve stem can extend.

Alternatively, the non-metallic material is one of a plastic material, a rubber material and a thermoplastic elastomer.

Compared with the prior art, the utility model has the beneficial effects that: the spring for the pump head distributor is formed by replacing a metal material with a non-metal material with elastic restoring force, and the spring can be recycled without separating the pump head distributor.

Drawings

FIG. 1 is a schematic view of a spring arrangement for a pump head dispenser according to the present invention;

FIG. 2 is a schematic cross-sectional view of a pump head dispenser using a spring;

in the figure: 400. a spring; 410. an upper circular ring; 420. a lower circular ring; 430. a compound circular ring; 100. a pump body; 110. a first space; 120. a second space; 200. a transfer unit; 210. a second fixing groove; 300. a discharge unit; 310. pressing the device; 311. a flow path member; 31101. a second flow passage; 312. a nozzle member; 31201. a third flow path; 313. a guard member; 314. an extension member; 320. a valve stem; 321. a first flow passage; 330. a locking cover; 331. placing a component; 340. a gasket; 350. a screw thread cover; 360. a sub-valve stem; 361. a first placing groove; 370. and a piston.

Detailed Description

For the convenience of understanding of those skilled in the art, the technical solution of the present invention will be further described in detail with reference to fig. 1-2.

The spring 400 of the present patent disclosure may be used with a pump head dispenser. Here, the pump head dispenser is a device that discharges a certain amount of gas, liquid, or other contents stored in a sealed container by pressing, and is suitable for various sealed containers for storing cosmetics, perfume, pharmaceuticals, foods, and the like. However, it is not limited to the field.

The spring 400 may be formed of a non-metallic material having an elastic restoring force in compression or tension. Here, the spring 400 may be formed of one of plastic, rubber material, or thermoplastic elastomer. However, it is not limited to the material.

The plastic material may include at least one of polypropylene, polyethylene, ethylene-vinyl acetate copolymer, polyvinyl chloride, and polyurethane. However, the material is not limited to the above.

The rubber material is a chemically cross-linked polymer and may include at least one of natural rubber and synthetic rubber. Here, the synthetic rubber may include styrene-butadiene rubber. However, the rubber material is not limited thereto.

Thermoplastic elastomers can be molded at high temperatures as flexible plastics, and can be polymeric materials that produce rubber elastomer properties at ambient temperatures. Therefore, the spring can be formed of a thermoplastic elastomer that generates rubber elastomer properties at normal temperature and has a restoring force. Specifically, the thermoplastic elastomer exhibits rubber elasticity under certain use conditions, and can form a polymer material together with the thermoplastic under certain molding conditions. However, the material is not limited to the above.

The thermoplastic elastomer can be classified into a styrene series, an olefin series, a urethane series, an amino compound series, a polyester series, and the like according to the material used. However, the material is not limited to the above.

According to several examples of the present patent, the spring 400 of polypropylene may provide the most suitable elastic restoring force. Specifically, the polypropylene spring 400 provides easier operation of the pump head dispenser than other springs of the same shape and configuration, and provides sufficient spring return force.

Referring to fig. 1, the spring 400 may include an upper ring 410, a lower ring 420, and a multiple ring 430. However, the components are not essential to realize the spring 400, and the spring 400 may have more or less components than the listed components.

The upper ring 410 may refer to an annular plate formed at an upper portion of the spring 400. The lower ring 420 may refer to an annular plate formed at the bottom of the spring 400.

According to several examples of this patent, the upper and

lower rings

410, 420 have a central bore that may extend through a central portion of the valve stem 320. The size and configuration of the inner circular surfaces of the upper and

lower rings

410, 420 may correspond to the size and configuration of the outer surface of the central portion of the stem 320. Accordingly, a central portion of the valve stem 320 may pass through the central holes of the upper and

lower rings

410 and 420.

The upper ring 410 may be disposed at an upper portion of a central portion of the valve stem 320, and force protruding outward along an outer surface is transmitted to below the assembly. In addition, the lower ring 420 may be placed on the placing member 331 protruding inward from the lower portion of the locking cap 330. Here, the placement member 331 is a component that does not move even if an external force is applied to the pump dispenser. Therefore, when the stem 320 is lowered by an external force, the external force is applied to the upper ring 410 to lower the upper ring 410, but the lower ring 420 is not lowered.

On the other hand, when the upper ring 410 descends, the lower ring 420 does not descend, and thus a plurality of coupling rings may be pressed to be deformed. In this case, the complex ring 430 may be restored to its original shape by an elastic restoring force. Thus, when the external force applied to the pump head dispenser is released, the double ring 430 may push the upper ring 410 upward, and when the double ring 430 pushes the upper ring 410 upward, the force transmission spring transmitted to the valve stem 320 may be released. In this case, the pump head dispenser may be restored to a state before an external force is applied to the pump head dispenser.

The multiple ring 430 may refer to a ring-shaped plate that provides a compressive or tensile elastic restoring force structure when the upper ring 410 and the lower ring 420 are connected between the upper ring 410 and the lower ring 420.

Since the multiple rings 430 each have an annular plate, a central hole may be formed. Here, a central portion of the pump head dispenser valve stem 320 may extend through a central aperture of the spring. However, without limitation to the valve stem, other components of the pump head dispenser may extend through the central bore.

The size and configuration of each inner surface of the compound ring 430 may correspond to the size and configuration of the outer surface of the middle portion of the stem 320. Accordingly, the middle portion of the valve stem 320 may pass through the central holes of the upper and

lower rings

410 and 420.

The upper ring 410, the lower ring 420, and the compound ring 430 may be secured inside the pump head dispenser by the valve stem 320 as the valve stem passes through central holes provided in the upper ring 410, the lower ring 420, and the compound ring 430, thereby providing elastic restoring force to the pump head dispenser.

The multiple rings 430 may be connected in a zigzag stack between the upper ring 410 and the lower ring 420. Thus, the multiple circular rings 430 may provide elastic restoring force in compression or tension.

Specifically, in the multiple ring 430, adjacent two connection rings are connected from each end to form an inclination, and in addition, continuous ring connection parts may be alternately connected at one side a in the width direction of the spring 400 and the other side B in the width direction of the spring. Therefore, a space is formed between the continuous annular connecting portions, and the compression can be smoothly performed by the external pressure. That is, such a connection structure of the round link chain can reduce the elastic restoring force.

On the other hand, in the multiple circular rings 430, a portion where adjacent two circular rings are connected may have a reinforcing portion of the first elastic restoring force. The first elastic restoring force strengthening part can provide the function of connecting two adjacent connecting rings together and strengthen the elastic restoring force.

Specifically, each of the multiple rings 430 is connected to each other, and at the position of each of the multiple rings 430, a material having the same material as that of the multiple rings 430 may be used for reinforcement. Here, the reinforced portion may be a first elastic restoring force increasing portion. Therefore, the portion where the multiple circular rings 430 are connected to each other may be thicker than other portions due to the first elastic restoring force reinforcing portion.

For example, in the multiple circular ring 430, in order that adjacent two connection rings are inclined to each other, each end portion may be connected by a first elastic restoring force reinforcing portion. In addition, the continuous circular ring connection portions may be alternately connected at one side a in the width direction of the spring 400 and the other side B in the width direction of the spring.

Even when the multiple circular ring 430 has a simple coupled structure, an elastic restoring force can be generated. In this case, when the external force applied to the pump head dispenser is released, the elastic restoring force may not be sufficient to restore the pump head dispenser to the original state. However, as shown herein, in the double ring 430, if the first elastic restoring force reinforcing portion is further provided in a portion where two adjacent connection rings are connected, the elastic restoring force is greater. In this case, the elastic restoring force may also have a force sufficient to restore the pump head dispenser to the initial state when the pump head dispenser loses the external force.

On the other hand, in the multiple ring 430, the first coupling ring coupled to the upper ring 410 may be coupled to the upper ring 410 through the second elastic restoring force increasing portion. In addition, in the multiple ring, the second connection ring connected to the lower ring 420 may be coupled to the lower ring 420 through the third elastic restoring force increasing part. Therefore, the elastic restoring force of the spring 400 can be further enhanced.

On the other hand, when the upper and

lower rings

410 and 420 are formed of a non-metallic material having an elastic restoring force, the pressure applied to the spring 400 may be partially absorbed from the upper and

lower rings

410 and 420. Accordingly, it is possible to prevent the structure of the spring 400, for example, the upper ring 410, the lower ring 420, and the multiple ring 430 from being broken or cracked due to excessive external pressure.

In addition, the multiple rings 430 may have the same shape and size, with a central hole formed in the multiple rings 430 to allow at least a portion to pass through the valve stem 320. Thus, the multiple rings 430 may be connected to each other at an angle. That is, the multiple circular rings 430 have a higher elastic restoring force due to the different shapes and sizes and the more smooth compression of the connection portions compared to the elastic bodies having different structures.

On the other hand, when the spring 400 has the structure as shown in fig. 1, the discharge part may be prevented from rotating when the valve stem 320 is lowered by an external force. Thus, the pump head dispenser may be more conveniently used by a user. Further, in order to secure an appropriate elastic restoring force, it is preferable to lengthen the length of the spring 400, but since the length of the spring 400 cannot be lengthened indefinitely, the configuration in fig. 1 is an optimum configuration in terms of providing an appropriate elastic restoring force while securing a stroke.

In addition, when spring 400 has the configuration shown in fig. 1, it is prevented from twisting during operation of the pump head dispenser, thereby providing a more stable, uniform spring return force.

Referring to fig. 2, the pump dispenser may include a pump body 100, a transfer unit 200, a discharge unit 300, and a spring 400. However, the components are not required in the manufacture of the pump head dispenser, and the components of the pump head dispenser may be more or less than the listed components.

In this context, the pump head dispenser may be assembled with the container. Here, the container assembled with the dispenser head may have a cylindrical shape with an upper opening and a lower closing, and a certain depth, in order to achieve the effect of storing the liquid content. However, it is not limited to the container of the shape.

After the pump body 100 is assembled with the transmission unit 200, it can be assembled with the discharge unit 300. Specifically, the transmission unit 200 is assembled to the lower portion of the pump body 100, and the discharge unit 300 is assembled to the upper portion of the pump body 100.

Also, the interior of the pump body 100 may be empty. Specifically, the pump body 100 may be a hollow cylinder having an upper opening and a lower opening. Further, the pump body 100 may include at least a part of the space in which the spring 400 is assembled.

On the other hand, the pump body 100 may be internally provided with a first space 110 and a second space 120. Here, the first space 110 may be provided at an upper portion of the pump body 100, and the second space 120 may be provided at a lower portion of the pump body 100. However, the components are not essential in illustrating the pump body 100, and the pump body 100 may have more or less components than the listed components.

The first space 110 may not be a space for transferring the contents from the container. That is, the first space 110 is a space separated from the second space 120 by the sub-valve stem 360 and the piston 370 of the discharge unit 300 described below, and the content transferred from the container to the second space 120 may not be transferred to the first space.

The second space 120 may also be a space for transferring contents from the container. Here, the contents may be transferred to the second space 120 through the transfer unit 200.

On the other hand, the pump body 100 may be formed of a plastic material. For example, the pump body 100 is one of high density polyethylene, polyvinyl chloride, polypropylene, polyethylene, acrylonitrile-butadiene-styrene copolymer, polycarbonate and acrylonitrile-butadiene-styrene copolymer, and ethylene-vinyl acetate copolymer. However, the material is not limited to the above.

The transfer unit 200 may be assembled at a lower portion of the pump body 100. Specifically, the upper portion of the transfer unit 200 may be assembled to the lower portion of the pump body 100. Here, the upper portion of the transfer unit 200 may form a second fixing groove 210.

On the other hand, a pipette may be assembled to the transfer unit 200. In addition, the suction pipe may transfer the contents stored in the container to the inside of the pump body 100, for example, the second space 120, through the transfer unit 200. Specifically, the suction pipe has a tubular shape with a certain length, one side of which is assembled to the bottom of the pump body 100 and the other side of which is placed inside the container, and can transfer the contents stored in the container to the inside of the pump body 100.

The spit-out unit 300 includes a pressing device 310, a valve stem 320, a locking cap 330, a gasket 340, a thread cap 350, a sub-valve stem 360, and a piston 370. However, the components are not essential in showing the discharge unit 300, and the components of the discharge unit 300 may be more or less than the listed components.

The discharge unit 300 is coupled to an upper portion of the pump body 100, and some components included in the discharge unit 300, for example, the pressing device 310, may be moved up and down by external pressure and discharge the contents stored in the pump body 100 to the outside.

The discharge unit 300 may be formed of a plastic material. For example, the plastic material includes at least one of high density polyethylene, polyvinyl chloride, polypropylene, polyethylene, acrylonitrile-butadiene-styrene copolymer, polycarbonate, acrylonitrile-butadiene-styrene copolymer, and ethylene-vinyl acetate copolymer. However, the material is not limited to the above.

On the other hand, the pressing device 310 can discharge the content to the outside after being assembled with the valve stem 320.

The pressing device 310 includes a runner member 311, a nozzle member 312, a guard member 313, and an extension member 314. However, the components are not essential in showing the pressing device 310, and the components of the pressing device 310 may be more or less than the listed components.

At least a portion of an upper portion of the valve stem 320 is connected to the flow passage member 311, and may form a second flow passage 31101 therein. Here, the second flow passage 31101 may be connected to the first flow passage 321 of the valve stem 320 described below. In this case, the first flow passage 321 and the second flow passage 31101 may become passages through which the contents flow. On the other hand, the second flow passage 31101 may be formed to allow the contents to flow from the bottom up through the first flow passage 321 into the longitudinal direction.

In addition, the nozzle member 312 is formed at an upper portion of the flow path member 311, and the third flow path 31201 may be formed at an inner portion thereof. Here, the third flow passage 31201 is connected to the second flow passage 31101, and can discharge the contents to the outside. Specifically, the third flow passage 31201 has one side opened to communicate with the second flow passage 31101 and the other side extended outward to discharge the contents. In addition, the other side of the third flow passage 31201 may form a discharge port. Therefore, the contents stored in the second space 120 of the pump body 100 can move from the lower portion to the upper portion through the first flow passage 321 of the valve stem 320 and the second flow passage 31101 of the flow passage member 311, and be discharged to the outside through the discharge port of the third flow passage 31201 of the nozzle member 312 connected to the second flow passage 31101.

On the other hand, the shielding member 313 extends along the outer surface of the runner member 311, which covers the runner member 311, to below the runner member 311. More specifically, the shield member 313, when coupled to the pump body 100, may encase at least a portion of the spring 400. Therefore, when the shield member 313 is coupled with the pump body 100, it is possible to prevent external foreign objects from contacting the spring 400, thereby maintaining the elastic restoring force of the spring 400. However, it is not limited to the form.

In another aspect. An extension member 314 may be formed to extend outwardly from an outer surface of the guard member 313. Specifically, the extension member 314 may extend in a direction opposite the nozzle member 312. Therefore, when the extension member 314 is present, the area contacted by the palm of the user's hand may become large, and thus the user can easily apply pressure to the pressing device 310.

According to several examples herein, the upper portion of the snap 310 may have a dome-shaped cross-section. In this case, the user can easily apply pressure to the pressing means 310.

On the other hand, the valve stem 320 may be inserted into the pump body 100 from an upper portion of the pump body 100. Specifically, the valve stem 320 may be in the form of a cylinder in which the first flow passage 321 is located, at least a portion of which is located in the first space 110. More specifically, a lower portion of the valve stem 320 is disposed in the first space 110 of the pump body 100, and an upper portion of the valve stem 320 may protrude upward from an upper side of the pump body 100. However, the form of the valve stem 320 is not limited thereto.

In addition, an upper portion of the valve stem 320 may be connected to a lower portion of the pressing device 310. Specifically, the upper outer surface of the valve stem 320 may be combined with the inner surface of the flow path member 311 of the pressing means 310. Accordingly, the second flow passage 31101 of the flow passage member 311 and the first flow passage 321 of the valve stem 320 are connected. That is, the contents of the second space 120 of the pump body 100 may move to the second flow passage 31101 of the flow passage member 311 through the first flow passage 321 of the valve stem 320, and be discharged to the outside through the third flow passage 31201 of the nozzle member 312 connected to the second flow passage 31101.

In addition, a spring 400 may be installed on an outer surface of the valve stem 320. Specifically, on the outer surface of the valve stem 320, the spring 400 may cover at least a portion of the outer surface of the valve stem 320.

On the other hand, the locking cap 330 is formed in a hollow cylindrical shape and is at least partially assembled in the first space 110 of the pump body 100. Specifically, at least a portion of the lock cover 330 is located in the first space 110 in order to make the inner surface of the lock cover close contact with the pump body 100. In addition, the inner surface of the locking cap 330 penetrates the valve stem 320, and the spring 400 may be assembled to the outer surface of the valve stem 320. Specifically, the lock cover 330 has a length that can be inserted into the middle of the upper and lower portions of the pump body 100.

In addition, the lower portion of the locking cover 330 may include a placement member 331 protruding inward. Here, the lower end of the spring 400 may be placed on the upper side of the placing member 331. Therefore, when the pressing device 310 and the valve stem 320 are lowered by the external pressure, the spring 400 is not lowered by the receiving member 331 of the lock cover 330, and only the upper portion and the middle portion of the spring 400 are lowered. Therefore, when the depression is formed and the external pressure disappears, the spring 400 is stretched and at least one component of the discharge unit 300, for example, the discharge unit 300 and the valve stem 320, is restored to the initial position by the elastic restoring force. In addition, the placement member 331 may prevent the inserted valve stem 320 from exceeding a certain depth. Specifically, if the pressing device 310 and the valve stem 320 are lowered to a certain depth by external pressure, the guard member 313 of the pressing device 310 is caught on the placing member 331 of the locking cap 330, thereby preventing the valve stem 320 from being lowered to a certain depth or more.

On the other hand, the gasket 340 has a ring shape and is assembled to an upper outer surface of the locking cap 330 in order to achieve a sealing state between the locking cap 330 and the thread cap 350. In addition, in order to couple the gasket 340 to the thread cover 350, a coupling portion for assembling the gasket is provided on the outer side of the locking cover 330. Specifically, the gasket-joining portion of the lock cover means a protruding portion formed between the upper and lower surfaces of the assembly gasket.

The screw cap 350 has a hollow cylindrical shape, an upper portion thereof is formed to cover the outer surface of the gasket 340 and the upper portion of the lock cover 330, and a lower portion thereof is formed to be inwardly spaced from the pump body 100. Therefore, the container can be coupled in a space formed by separating the screw cap from the pump body 100. However, it is not limited to the position where the containers are combined.

On the other hand, the sub-stem 360 is assembled to the lower end of the stem 320 to be movable up and down by external pressure. In addition, the sub-valve stem 360 may form a first seating groove 361 inside the lower side. According to several embodiments, the sub-stem 360 has a hollow cylindrical shape, and a flow path of the sub-stem 360 through which the contents flow may pass upward in a longitudinal direction. Therefore, the sub-stem 360 is moved up and down by the external pressure, and the content inside the pump body 100 is transferred to the stem 320 through the flow path of the sub-stem.

On the other hand, the inner side of the piston 370 is closely contacted to the outer surface of the sub-valve stem 360, and the outer side of the piston 370 is closely contacted to the inner wall of the pump body 100. Accordingly, the piston 370 may divide the interior of the pump body 100 into the first space 110 and the second space 120. Specifically, in the internal space of the pump body 100, the upper space of the piston 370 is the first space 110, and the lower space of the piston 370 is the second space 120. In addition, the piston 370 may prevent the contents of the second space 120 from flowing into the first space 110. The piston 370 moves the content by moving the sub-valve stem 360 up and down to change the internal pressure of the cylinder 100.

On the other hand, in order to transfer the contents stored in the container connected to the transfer unit 200 to the interior of the pump body 100, for example, the second space 120, when the contents transferred to the interior of the pump body 100 are discharged to the outside by the discharge unit 300, the internal pressure of the pump body 100 needs to be changed. Specifically, a part of the discharge unit 300 is lowered by the external pressure, the space inside the pump body 100 is reduced, the pressure inside the pump body 100 is increased, and the content stored in the pump body 100 is discharged to the outside through the discharge unit 300. When a part of the discharge unit 300 that has descended rises to the initial position, the pressure inside the cylinder 100 decreases, and the content stored in the container is sucked into the cylinder 100 along the suction pipe of the transfer unit 200. Therefore, it is important to ensure that a part of the discharge unit 300 can smoothly move up and down in the pump body 100. According to several examples herein, the pump head dispenser is secured by a spring 400 to allow the partial discharge unit 300 to move up and down smoothly.

While a part of the spring 400 is installed in the first space 110, a part of the spring is wrapped around the outer surface of the valve stem 320. Specifically, the upper portion of the spring 400 is placed on the upper end of the valve stem 320, and the lower portion may be placed on the upper side of the placement member 331 of the locking cap 330. Therefore, when the stem 320 is lowered by the external pressure, the upper and middle portions of the spring 400 are lowered together with the stem 320, and the lower portion of the spring 400 is not lowered by the seating member 331 of the locking cap 330.

On the other hand, when the pressing force is released after the pressing force is applied downward by the pressing device 310 connected to the valve stem 320, the spring 400 may restore at least one structure of the spit unit 300, for example, the pressing device 310, the valve stem 320, the sub-valve stem 360, and the piston 370, to an original state by an elastic restoring force. Therefore, the spring 400 may have a structure in which compression or extension is smooth.

As shown in several examples illustrated in fig. 1-2, the pump head dispenser includes a spring 400 formed of a non-metallic material having an elastic restoring force instead of a metal spring, and may be more conveniently recycled without the need to separate the pump head dispenser. In addition, the pump head dispenser has a guard to press the device 310, and the spring 400 is placed in the first space to transfer the contents. Therefore, the spring 400 is prevented from being released by foreign substances and contents, and the elastic restoring force of the spring 400 is maintained.

The foregoing is merely exemplary and illustrative of the present invention, and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. A spring for a pump head dispenser, formed of a non-metallic material having a compressive or tensile elastic restoring force, characterised by comprising an upper ring, a lower ring; and a complex ring connected between the upper ring and the lower ring in a zigzag lamination to provide a compressive or tensile elastic restoring force.

2. A spring for a pump head dispenser according to claim 1, wherein in the duplex ring, two adjacent connecting rings are connected from each end to form an incline, but successive connecting rings may be connected alternately on one side and the other side of the width of the spring.

3. A spring for a pump head dispenser according to claim 2, wherein the multiple ring includes, at a portion where two adjacent connection rings are connected, the two adjacent connection rings, and a first elastic restoring force reinforcing portion which reinforces an elastic restoring force.

4. A spring for a pump head dispenser according to claim 2, wherein a plurality of connecting rings, a first connecting ring connected to said upper ring and said upper ring in combination, have a second resilient restoring force enhancing portion for enhancing the resilient restoring force; and a third elastic restoring force strengthening part which is combined with the second connecting ring connected with the lower ring and the lower ring in the compound ring and strengthens the elastic restoring force.

5. A spring for a pump head dispenser according to claim 1, wherein the upper, lower and compound rings have a central aperture through which at least a portion of the valve stem of the pump head dispenser passes.

6. A spring for a pump head dispenser according to claim 1, wherein the non-metallic material is one of a plastics material, a rubber material and a thermoplastic elastomer.