CN116873392A - Product dispenser and container with same - Google Patents

Abstract

A product dispenser is mounted on the container for dispensing liquid or semi-liquid product outwardly from the container. Wherein the product dispenser comprises a supplementary bladder having at least one opening, wherein the at least one opening communicates with the exterior of the container to receive ambient air from the exterior of the container or communicates with the interior of the container to supplement the interior of the container with gas to compensate for negative pressure generated in the container. The product dispenser of this construction is effective in preventing contamination of the product in the container. A container comprising the product dispenser is also disclosed.

Description

Product dispenser and container with same

Technical Field

The present application relates to a container for containing liquid or semi-liquid products and, more particularly, to improvements in the construction of product dispensers on such containers.

Background

In industries such as daily chemical products, pharmaceutical products, food products, etc., containers for holding liquid or semi-liquid products are often fitted with product dispensers such as push pumps, nozzles, etc., to dispense the liquid or semi-liquid product from the container. During dispensing of the product, as the product in the container decreases, a negative pressure is created in the container which collapses the container and also causes the product to be difficult to dispense. In order to solve the problem of collapsing the container, a balancing air hole or a balancing passage is provided in the product dispenser, and air outside the container can be supplied to the container while dispensing the product outside the container, so that the container is prevented from being collapsed.

However, this way of replenishing air also has some problems. One of these problems is that the air that is replenished into the container is ambient air in which microorganisms such as bacteria, viruses, etc. may be present. These microorganisms enter the container and come into contact with the liquid or semi-liquid product in the container and multiply in large amounts, which can have a negative effect on the characteristics of the product. In order to inhibit the growth of microorganisms, additives such as preservative, bacteriostat and the like are added into the product. However, these additives cause irritation to the skin or mucous membrane of the human body, causing discomfort to the body and even damage to body organs such as the skin, and in the case where the product is a pharmaceutical product, a food product or the like, such additives cannot be added.

Accordingly, there is a need for further improvements in the construction of containers with product dispensers to overcome the problems described above.

Disclosure of Invention

The application is made to solve the technical problems existing in the prior art. The object of the present application is to provide a container with a product dispenser having an improved structure, which can supplement negative pressure generated in the container after dispensing the product from the container, and at the same time, can prevent microorganisms, pollutants, etc. in the air from contacting the product to contaminate the product.

A product dispenser is mounted on a container for dispensing a liquid or semi-liquid product outwardly from the container. Wherein the product dispenser comprises a supplementary bladder having at least one opening, wherein the at least one opening communicates with the exterior of the container to receive ambient air from the exterior of the container or communicates with the interior of the container to supplement the interior of the container with gas to compensate for negative pressure generated in the container.

In the product dispenser of the above-described structure, a supplementary air bag is provided, which may be pre-filled with a clean gas such as clean air or nitrogen gas, etc., which may be supplied to the container during dispensing of the product in the container, or which may be provided in the container, and which is filled with a gas for compensating for the negative pressure during dispensing of the product, so that it is ensured that the gas in contact with the product is clean, or that the gas for balancing the negative pressure may be isolated from the product. Thus, contamination of the product can be prevented.

In one embodiment, the supplemental gas bladder is pre-filled with gas, and at least one opening of the supplemental gas bladder is in communication with the interior of the container, and the supplemental gas is supplied from the supplemental gas bladder to the interior of the container when the product is dispensed outwardly from the container. The pre-filled gas is clean gas, so that no pollution is caused to the product.

Further specifically, the product dispenser is a push type product dispenser and is provided with a pressure head, a tooth socket and a cylinder, a piston rod is connected below the pressure head, a piston is arranged on the piston, and sealing fit is formed between the piston and the inner wall of the cylinder.

For this type of product dispenser, a supplemental bladder may be positioned in the space formed by the cooperation of the head and the mouthpiece. At the same time as the ram is pressed to dispense the product outwardly, the refill pouch is also pressed so that the container can be replenished with gas pre-filled in the refill pouch.

Further, a balance air hole is formed on the side wall of the air cylinder, and the balance air hole is communicated with at least one opening of the air supplementing bag.

Preferably, a piston may be used to act as an opening and closing structure for the balance air hole. In particular, the piston is arranged such that when the product dispenser is not being pressed, the piston is located at the balance vent, closing the balance vent, and when the product dispenser is being pressed to dispense product, the piston moves downwardly away from the balance vent, thereby opening the balance vent.

Or the cylinder is provided with a cylinder plug, the cylinder plug is provided with a balance air hole, and the balance air hole is communicated with at least one opening of the air supplementing bag. Wherein, as the opening and closing structure of the balance air hole, a one-way air inlet valve is arranged on the balance air hole, and the one-way air inlet valve is arranged to allow the air in the air supplementing bag to flow into the container, but prevent the air from flowing back into the air supplementing bag from the container.

In another specific construction, the supplementary airbag is disposed outside of the container, wherein a container opening is provided in the container, the container opening being in communication with at least one opening of the supplementary airbag, and a one-way valve is disposed in the container opening, the one-way valve being configured to allow gas in the supplementary airbag to flow into the container, but to prevent flow from the container toward the supplementary airbag.

In yet another specific construction, the supplemental air bladder is disposed within the interior of the container and communicates with the exterior of the container via a balance vent formed in the product dispenser such that when negative pressure is created in the container as product is dispensed outwardly from the container, external air can flow into the supplemental air bladder via the balance vent.

Further specifically, the product dispenser is a push type product dispenser and is provided with a pressure head, a tooth socket and a cylinder, a piston rod is connected below the pressure head, a piston is arranged on the piston, sealing fit is formed between the piston and the inner wall of the cylinder, and a balance air hole is arranged on the side wall of the cylinder or on the tooth socket.

Alternatively, the product dispenser includes a mouthpiece and a dispenser body disposed within the mouthpiece, a supplemental bladder coupled to the dispenser body, and at least one opening of the supplemental bladder in communication with the interior cavity of the dispenser body.

For product dispensers in the form of a drip nozzle, a first through hole is formed in the sidewall of the drip nozzle and a second through hole is formed in the sidewall of the dispenser body, the second through hole being aligned with the first through hole and extending into the interior cavity of the dispenser body.

Preferably, the product dispenser further comprises an air inlet valve arranged to allow external air to enter the supplementary air chamber and to prevent air in the supplementary air chamber from exiting.

In one implementation, the air inlet valve is disposed in an interior cavity of the dispenser body, wherein the air inlet valve includes a mounting portion and an elastic valve plate, the mounting portion is mounted in the interior cavity of the dispenser body, and the elastic valve plate is disposed between the supplemental air bladder and the interior cavity of the dispenser body.

Alternatively, in another implementation, the refill includes a mounting member for mounting the refill on the dispenser body, and the inlet valve is formed on the mounting member, wherein the inlet valve includes a valve plate that is connected to the mounting member by at least one resilient strip, the valve plate of the inlet valve being capable of being biased against an inlet from the refill into the interior cavity of the dispenser body when the mounting member is mounted to the dispenser body. The elastic strip may be one or more, for example, three.

In addition, the product dispenser is a hand-held dispenser with a refill bladder attached to the underside of the product dispenser and positioned within the container.

Regarding the supplementary balloon, the balloon body may be radially expandable, axially expandable, or both radially expandable and axially expandable.

The application also relates to a container comprising a product dispenser as described above.

Drawings

The drawings illustrate a preferred, non-limiting embodiment of the application, and together with the description, serve to further clarify the features and advantages of the application. Wherein:

fig. 1 shows a cross-sectional view of a container with a product dispenser according to a first embodiment of the application, shown prior to dispensing the product out of the container.

Fig. 2 shows another cross-sectional view of the container with the product dispenser of the first embodiment of the application, shown after dispensing the product out of the container.

Fig. 3 shows a cross-sectional view of a container with a product dispenser according to a second embodiment of the application, shown prior to dispensing the product out of the container.

Fig. 4 shows another cross-sectional view of a container with a product dispenser according to a second embodiment of the application, shown after dispensing the product out of the container.

Fig. 5 shows a cross-sectional view of a container with a product dispenser according to a third embodiment of the application, shown prior to dispensing the product out of the container.

Fig. 6 shows another cross-sectional view of a container with a product dispenser according to a third embodiment of the application, shown after dispensing the product out of the container.

Fig. 7 shows a cross-sectional view of a container with a product dispenser according to a fourth embodiment of the application, shown prior to dispensing the product out of the container.

Fig. 8 shows another cross-sectional view of a container with a product dispenser according to a fourth embodiment of the application, shown after dispensing the product out of the container.

Fig. 9 shows a cross-sectional view of a container with a product dispenser according to a fifth embodiment of the application, shown prior to dispensing the product out of the container.

Fig. 10 shows another cross-sectional view of a container with a product dispenser according to a fifth embodiment of the application, shown after dispensing the product out of the container.

Fig. 11 shows a cross-sectional view of a container with a product dispenser according to a sixth embodiment of the application, shown prior to dispensing the product out of the container.

Fig. 12 shows another cross-sectional view of a container with a product dispenser according to a sixth embodiment of the application, shown after dispensing the product out of the container.

Fig. 13 shows a cross-sectional view of a container with a product dispenser according to a seventh embodiment of the application, shown prior to dispensing the product out of the container.

Fig. 14 shows another cross-sectional view of a container with a product dispenser according to a seventh embodiment of the application, shown after dispensing the product out of the container.

Fig. 15 shows a perspective cross-sectional view of the drip nozzle of the product dispenser of fig. 13.

Fig. 16 shows a perspective cross-sectional view of the dispenser body of the product dispenser of fig. 13.

Fig. 17 shows a perspective view of the dispenser body of fig. 16.

Fig. 18 shows a perspective view of an intake valve of the product dispenser of fig. 13.

Fig. 19 schematically illustrates pressing the container with the product dispenser of fig. 13 to dispense product therein.

Fig. 20 schematically shows a state in which the pressing force is removed after pressing the container of fig. 13.

Fig. 21 shows a cross-sectional view of a container with a product dispenser according to an eighth embodiment of the application.

Fig. 22 shows a perspective view of the refill pouch of the product dispenser of fig. 21 with an air inlet valve disposed on the mounting member of the refill pouch.

Fig. 23 shows an intake valve of another structure provided on a mounting member of the supplementary bag.

Fig. 24 shows a cross-sectional view of a container with a product dispenser according to a ninth embodiment of the application.

Fig. 25 shows a perspective view of the supplementary bladder of the product dispenser of fig. 24, wherein the bladder of the supplementary bladder is in the form of a bellows.

Figure 26 shows the balloon of the radially expandable balloon.

Fig. 27 shows a cross-sectional view of a container with a product dispenser according to a tenth embodiment of the application, wherein the product dispenser is a hand-held dispenser.

(symbol description)

10 container

100 product dispenser

110 pressure head

111 nozzle opening

112 blocking valve

120 tooth socket

130 supplementary air bag

131 first opening

132 second opening

140 piston rod

141 piston

150 air cylinders

151 cylinder plug

152 balance air hole

200 product dispenser

210 pressure head

220 tooth socket

230 air supplementing bag

240 piston rod

251 cylinder plug

252 balance air hole

253 one-way air inlet valve

231 opening

300 product dispenser

330 supplementary air bag

331 check valve

11 first container opening

12 second container opening

13 air bag shell

400 product dispenser

410 pressure head

420 tooth socket

421 balance air hole

430 supplementary air bag

450 cylinder

451 cylinder plug

452 balance airway

500 product dispenser

510 ram

520 tooth socket

530 supplementary air bag

540 piston rod

550 cylinder

541 piston

542 balance air hole

560 suction pipe

600 product dispenser

610 press head

620 tooth socket

621 balance airway

630 air supplementing bag

640 piston rod

641 piston

650 cylinder

651 cylinder plug

700 product dispenser

20 sealing cover

710 drip nozzle

711 first via

712 outlet port

720 dispenser body

721 liquid outlet one-way valve

722 second through hole

723 liquid outlet channel

730 supplementary air bag

740 inlet valve

741 mounting portion

742 elastic valve plate

800 product dispenser

830 air supplementing bag

831 mounting component

832 capsule body

840 air inlet valve

841 valve plate

842 elastic strip

900 product dispenser

930 air compensating bag

1000 product dispenser

1030 air supplementing bag

Detailed Description

The following detailed description of the embodiments of the application refers to the accompanying drawings. It should be understood that the drawings are only illustrative of the preferred embodiments of the present application and are not intended to limit the scope of the present application. Various obvious modifications, variations, equivalents, and alternatives of the present application may be made by those skilled in the art on the basis of the embodiments shown in the drawings, and the technical features of the different embodiments described below may be arbitrarily combined with each other without contradiction, which fall within the scope of the present application.

< first embodiment >

Fig. 1 and 2 illustrate a container 10 having a product dispenser 100 according to a first embodiment of the present application, wherein fig. 1 illustrates the product dispenser 100 in an unpressed, ready-to-use state and fig. 2 illustrates the product dispenser 100 in a state after use.

The product dispenser 100 includes a ram 110 and a mouthpiece 120, the ram 110 being capable of moving up and down relative to the mouthpiece 120 along the axis of the product dispenser 100, the ram 110 being fixedly mounted to the container 10, such as by a threaded fit or the like. A piston rod 140 is connected below the ram 110, and the piston rod 140 is movable along the axial direction along with the ram 110. The product dispenser 100 further includes a cylinder 150, and the mouthpiece 120 is fixedly coupled to the cylinder 150. Preferably, a cylinder plug 151 is further installed on the cylinder 150.

A piston 141 is provided on the piston rod 140, the piston 141 being located in the cylinder 150 and the piston 141 forming a sealing engagement with the inner wall of the cylinder 150, whereby the product in the cylinder 150 can be dispensed by movement of the piston 141 in the cylinder 150.

In a first embodiment, the product dispenser 100 further includes a supplemental bladder 130, the supplemental bladder 130 being located in a space defined by the fit of the head 110 and the mouthpiece 120. The supplementary air bag 130 is pre-filled with a gas such as clean air, an inert gas such as nitrogen, or the like. The supplementary pouch 130 has two openings, a first opening 131 and a second opening 132, wherein the first opening 131 is sealingly engaged around the piston rod 140, and the second opening 132 is coupled to the mouthpiece 120 and communicates with the inner space of the container 10.

A balance air hole 152 extending through the side wall of the cylinder 150 is formed in the side wall of the cylinder 150, and the supplementary air bag 130 communicates with the balance air hole 152 through a gap between the piston rod 140 and the cylinder plug 151 and the cylinder 150, and further communicates with the inside of the container 10.

Preferably, the piston 141 may function as an opening and closing mechanism of the balance air hole 152. In the upper standby state shown in fig. 1, the piston 141 is located at the position of the balance air hole 152, closing the balance air hole 152. When the ram 110 is depressed to move the piston 141 to the position shown in fig. 2, the piston 141 moves away from the position of the balance air hole 152, thereby opening the balance air hole 152, and at this time, the gas in the supplementary air bag 130 can enter into the container 10 through the gap between the piston rod 140 and the cylinder 150 and the cylinder stopper 151 to compensate for the negative pressure generated by the product being dispensed.

Preferably, the volume of pre-stored gas in the supplemental gas bladder 130 is substantially the same as the volume of product in the container 10. Thus, after the product in the container 10 has been fully dispensed, the gas in the supplemental bladder 130 also just fully enters the container 10, and the supplemental bladder 130 is in the collapsed condition shown in FIG. 2.

Further preferably, in the standby state shown in fig. 1, the upper ring of the piston 141 is engaged with the lower end of the cylinder plug 151, functioning as a further seal.

Preferably, a shut-off valve 112 (or a pour check valve) is also provided in the head 110, the shut-off valve 112 being configured to permit product to be dispensed from the container 10 via the product dispenser 100 via the nozzle opening 111, but to prevent ambient air from returning to the product dispenser 100 and into the container 10.

In the product dispenser 100 described above, the supplementary bag 130 may be formed in various ways, for example, by injection, blow molding, injection blowing, gas assist, etc., or may be formed of a film, a bag, etc. Also, the material of the supplementary pouch 130 may be various materials known in the art. Preferably, to enhance the barrier effect of the supplementary airbag 130, the supplementary airbag 130 may be formed using a multi-layered structure and/or a composite material.

The principle of operation of the structure of the first embodiment will be described below with reference to fig. 1 and 2:

in the inactive state shown in fig. 1, the supplementary air chamber 130 is filled with the pre-charge gas, and the balance air hole 152 is closed by the piston 141.

In the state shown in fig. 2, the ram 110 is depressed, so that the piston rod 140 and the piston 141 thereon are moved downward, and the product in the cylinder 150 is delivered under pressure. At the same time, the piston 141 moves away from the balance air hole 152, and opens the balance air hole 152, so that the gas in the supplementary air bag 130 can enter into the container 10, compensating for the negative pressure generated in the container 10.

< second embodiment >

Fig. 3 and 4 illustrate a second embodiment of the present application wherein a product dispenser 200 is mounted to container 10. The specific structure described above with respect to the first embodiment is also applicable to the second embodiment without contrary description or conflict. The structure of the second embodiment different from the first embodiment will be specifically described below.

As shown in fig. 3, a product dispenser 200 is mounted on the container 10. The product dispenser 200 includes a ram 210 and a mouthpiece 220 with a piston rod 240 attached to the ram 210. A supplementary air pocket 230 is provided around the piston rod 240 in the space formed by the ram 210 and the mouthpiece 220.

The supplementary bag 230 has an opening 231 provided at one end (lower end shown in the drawing), and the opening 231 is connected to a cylinder plug 251 of the product dispenser 200. The cylinder plug 251 is provided with a balance air hole 252, and the balance air hole 252 communicates with the internal space of the container 10, for example, to the container 10 through a gap between the socket 220 and the cylinder plug 251.

Preferably, a one-way gas inlet valve 253 is further provided on the cylinder plug 251, which allows the gas in the supplementary bag 230 to flow into the container 10, but prevents the product or the like in the container 10 from flowing into the supplementary bag 230.

In one specific construction, the one-way intake valve 253 is an elastic sheet provided below the opening 231, and is configured such that when the ram 210 is pressed, the supplementary air bag 230 is pressed, and the pressure of the gas pre-filled in the supplementary air bag 230 deforms the one-way intake valve 253, so that the balance air hole 252 is opened, and the gas in the supplementary air bag 230 flows into the container 10. When the pressure applied to the ram 210 is removed, the one-way air inlet valve 253 is attached to the balance air hole 252, closing the balance air hole 252.

Similar to the first embodiment, the volume of gas pre-filled in the supplemental bladder 230 is preferably the same as the volume of product in the container 10.

< third embodiment >

Fig. 5 and 6 illustrate a third embodiment of the present application in which a product dispenser 300 is mounted to a container 10. The specific structures described above with respect to the first and second embodiments are also applicable to the third embodiment without contrary description or conflict. The structure of the third embodiment different from the first and second embodiments will be specifically described below.

As shown in fig. 5 and 6, a product dispenser 300 is mounted on the container 10 of the third embodiment, and in particular, the product dispenser 300 is mounted on the first container opening 11 of the container 10, for example, the first container opening 11 is formed at the top of the container 10.

The product dispenser 300 includes a supplemental bladder 330 that is pre-filled with a gas such as an inert gas, e.g., clean air, nitrogen, etc., in the supplemental bladder 330. A second container opening 12 is provided in the container 10, and a supplementary bag 330 is attached to the second container opening 12, the second container opening 12 being formed at the bottom of the container 10 as shown in the drawings, for example. A one-way valve 331 is provided at the connection of the supplementary bag 330 with the second container opening 12, which one-way valve 331 is provided to allow the gas in the supplementary bag 330 to enter the container 10, but to prevent the product in the container 10 from flowing into the supplementary bag 330.

Preferably, the air bag housing 13 is further included, and the air bag housing 13 is disposed around the air supplementing bag 330 and connected to the container 10, and can function to protect the air supplementing bag 330.

When the product in the container 10 is dispensed through the product dispenser 300, the pressure in the container 10 is reduced, a negative pressure is generated, and the check valve 331 is opened by the negative pressure, and the gas in the supplementary gas chamber 330 is supplied into the container 10.

In the structure shown in the drawings, the supplementary bag 330 is attached to the bottom of the container 10, and in addition, the supplementary bag 330 may be attached to other positions of the container 10. For example, in the case where the container 10 is square or rectangular in cross section, the second container opening 12 may be opened at the side of the container 10, and the supplementary airbag 330 and the airbag housing 13 for the supplementary airbag 330 may be attached at the side of the container 10.

Furthermore, other types of product dispensers are possible in addition to the push-type product dispensers shown in the figures.

< fourth embodiment >

Fig. 7 and 8 illustrate a fourth embodiment of the present application in which a product dispenser 400 is mounted to a container 10. The specific structures described above with respect to the first to third embodiments are also applicable to the fourth embodiment without contrary description or conflict. The structure of the fourth embodiment different from the first to third embodiments will be specifically described below.

In a fourth embodiment, the container 10 has a product dispenser 400 mounted thereon. The product dispenser 400 includes a ram 410 and a mouthpiece 420. The socket 420 is fixedly connected with the cylinder 450, and a cylinder plug 451 is provided on the cylinder 450.

The product dispenser 400 further includes a supplemental bladder 430, the open end of the supplemental bladder 430 being fixedly secured under the mouthpiece 420. For example, in the exemplary structure shown in the drawings, one side of the open end of the supplementary air bag 430 is interposed between the mouthpiece 420 and the opening of the container 10, and the other side is fixedly coupled to the outer circumferential surface of the cylinder 450 or to the lower portion of the mouthpiece 420.

The dental mouthpiece 420 has a balance hole 421 formed therein, and the balance hole 421 is introduced into the air compensating bag 430. In this way, in the case where the product in the container 10 is dispensed to generate negative pressure in the container 10, external air can enter the supplementary air bag 430 through the balancing air hole 421, thereby compensating for the negative pressure in the container 10.

Since the outside air enters the supplementary air bag 430, the supplementary air bag 430 isolates the air from the product inside the container 10, so that pollution of the product by the outside air can be prevented, and negative pressure generated by dispensing the product in the container 10 can be compensated.

Preferably, as shown in fig. 7 and 8, the cylinder plug 451 may serve as an opening and closing mechanism that opens and closes the balance air hole 421. Specifically, the cylinder plug 451 has an outer flange provided so as to be able to cover the balance air hole 421, and a balance air passage 452 is formed on the outer flange of the cylinder plug 451, for example, a groove is formed at the bottom of the outer flange, which is able to communicate the cylinder plug 451 with the outside. The cylinder plug 451 is provided to be rotatable with respect to the cylinder 450 and the socket 420 so that the balance air duct 452 can be aligned and offset with the balance air hole 421.

When the cylinder plug 451 is rotated to a position where the balance air passage 452 is aligned with the balance air hole 421, an operation of dispensing the product may be performed, in which external air may flow into the supplementary air bag 430 as the product is dispensed out of the container 10, to compensate for the negative pressure generated. When dispensing of product outward is not required, the cylinder plug 451 can be rotated to a position in which the balance air channel 452 is offset from the balance air hole 421, at which time outside air does not enter the supplemental air bag 430.

< fifth embodiment >

Fig. 9 and 10 illustrate a fifth embodiment of the present application wherein a product dispenser 500 is mounted on a container 10. The specific structures described above with respect to the first to fourth embodiments are also applicable to the fifth embodiment without contrary description or conflict. The structure of the fifth embodiment different from the first to fourth embodiments will be specifically described below.

In a fifth embodiment, the container 10 has a product dispenser 500 mounted thereon. The product dispenser 500 includes a ram 510, a mouthpiece 520, a piston rod 540, and a cylinder 550. The piston rod 540 is provided with a piston 541. The product dispenser 500 further includes a supplemental bladder 530, the supplemental bladder 530 being disposed within the container 10 with the open end of the supplemental bladder 530 sealingly engaging the outer periphery of the cylinder 550.

A balance air hole 542 is formed in a side wall of the cylinder 550, and the balance air hole 542 communicates with the inside of the supplementary air bag 530. The piston 541 can function as an opening and closing mechanism that opens and closes the piston 541.

In the standby state shown in fig. 9, the piston 541 is in an upper state, aligned with the balance air hole 542, closing the balance air hole 542. When the pressing head 510 is pressed down, as shown in fig. 10, the piston 541 moves downward, opening the balance air hole 542, so that external air can enter the supplementary air bag 530 through the balance air hole 542 while pumping out the product in the container 10, compensating for negative pressure generated by pumping out the product.

In one exemplary configuration, the lower end of the supplemental bladder 530 may be sealingly engaged to the suction tube 560.

The supplementary air bag 530 isolates the external air introduced thereinto from the product in the container 10 to prevent the external air from contaminating the product in the container 10.

< sixth embodiment >

Fig. 11 and 12 illustrate a sixth embodiment of the present application wherein a product dispenser 600 is mounted to a container 10. The specific structures described above with respect to the first to fifth embodiments are also applicable to the sixth embodiment without contrary description or conflict. The structure of the sixth embodiment different from the first to fifth embodiments will be specifically described below.

Mounted on the container 10 is a product dispenser 600, the product dispenser 600 including a ram 610, a mouthpiece 620, a piston rod 640, and a cylinder 650. A piston 641 is provided on the piston rod 640. A cylinder plug 651 is provided on the cylinder 650.

The product dispenser 600 further includes a supplementary airbag 630, and an upper open end of the supplementary airbag 630 is connected below in a manner that can be referred to in the fourth embodiment.

In the sixth embodiment, a balance air passage 621 is provided below the mouthpiece 620, the balance air passage 621 communicating with the outside through a gap formed between the cylinder 650 and the cylinder plug 651, a gap formed between the cylinder plug 651 and the piston rod 640, and a gap between the ram 610 and the mouthpiece 620. Simultaneously with dispensing the product in the container 10, outside air can flow into the supplementary air bag 630 through the balance air passage 621.

Preferably, the piston 641 is capable of cooperating with the lower end of the cylinder plug 651 to function to open and close a passage from the outside to the balance air passage 621. Specifically, as shown in fig. 11, piston 641 is in sealing contact with the lower end of cylinder plug 651, blocking communication between the gap between cylinder plug 651 and cylinder 650 and the gap between cylinder plug 651 and piston rod 640, while in the state shown in fig. 12, piston 641 is separated from cylinder plug 651, thereby opening the passage.

< seventh embodiment >

Fig. 13-20 illustrate a seventh embodiment of the present application wherein a product dispenser 700 is mounted to the container 10. The specific structures described above with respect to the first to sixth embodiments are also applicable to the seventh embodiment without contrary description or conflict. The structure of the seventh embodiment different from the first to sixth embodiments will be specifically described below.

In a sixth embodiment, the product dispenser 700 mounted on the container 10 is embodied in the form of a drip nozzle, the container 10 being of variable volume, and the product in the container being squeezable by pinching the container 10.

The product dispenser 700 includes a mouthpiece 710. As shown in fig. 15, a first through hole 711 is formed on a side wall of the mouthpiece 710, which extends through the side wall of the mouthpiece 710. A liquid outlet 712 is formed at the top of the mouthpiece 710.

A dispenser body 720 is provided within the mouthpiece 710, and fig. 16 and 17 show a specific structure of the dispenser body 720. As shown in fig. 16, a liquid outlet check valve 721 is formed at the top of the dispenser body 720, and the liquid outlet check valve 721 is matched with the liquid outlet 712 so that the product in the container 10 can be dispensed through the liquid outlet 712 and external air can be prevented from flowing into the container from the liquid outlet 712.

A second through hole 722 is formed in a sidewall of the dispenser body 720, and the second through hole 722 extends into the inner cavity of the dispenser body 720. The second through hole 722 is aligned with the first through hole 711, thereby forming a balance air hole so that the inside of the supplementary air bag 730 can communicate with the outside of the product dispenser 700. A supplementary air bag 730 is connected to the lower portion of the dispenser body 720, and the internal space of the supplementary air bag 730 communicates with the inner cavity of the dispenser body 720. Also, an intake valve 740 is provided in the inner cavity of the dispenser body 720, the intake valve 740 being provided to allow outside air to enter the supplementary air bag 730 through the first and second through holes 711 and 722 and to prevent the air from flowing in the opposite direction. Fig. 18 shows a perspective view of the inlet valve 740, the inlet valve 740 comprising a mounting portion 741 at an upper portion for mounting the inlet valve 740 in the interior cavity of the dispenser body 720. At the lower end of the intake valve 740 is formed an elastic valve plate 742, which is located between the inner cavity of the dispenser body 720 and the supplementary air bag 730, and specifically fitted at the inlet from the supplementary air bag 730 into the inner cavity of the dispenser body 720, which enables unidirectional flow of air from the outside to the inside of the supplementary air bag 730.

The attachment of the bladder 730 to the dispenser body 720 may be accomplished in a variety of known ways, such as a male-female ring fit, a threaded fit, etc.

A groove is also formed in the sidewall of the dispenser body 720 as shown in fig. 17. The recess serves as a liquid outlet channel 723 between the dispenser body 720 and the drip nozzle 710.

Preferably, as shown, the product dispenser 700 further includes a sealing cap 20, and the sealing cap 20 is provided with a protrusion, which can close the liquid outlet 712 of the drip nozzle 710.

As shown in fig. 19, when the body of the container 10 is pinched, the pressure acting on the product inside the container 10 rises, so that the product flows into the liquid outlet channel 723, and the liquid outlet check valve 721 opens, and the product flows out from the liquid outlet 712, as indicated by arrow a in fig. 19. When the pressing force applied to the container 10 is removed, the container 10 tends to return to the original shape, and a negative pressure is formed in the container 10. This negative pressure causes the liquid outlet check valve 721 to close and the air inlet valve 740 to open, allowing air to flow into the supplementary air bag 730 through the first through hole 711 and the second through hole 722, as indicated by arrow B in fig. 20, thereby compensating for the negative pressure in the container 10.

< eighth embodiment >

Fig. 21-23 illustrate an eighth embodiment of the present application wherein a product dispenser 800 is mounted to the container 10. The specific structures described above with respect to the first to seventh embodiments are also applicable to the eighth embodiment without contrary description or conflict. The structure of the eighth embodiment different from the first to seventh embodiments will be specifically described below.

In the eighth embodiment, the product dispenser 800 includes a nozzle 810 and a dispenser body 820, and a supplementary airbag 830 is mounted on the dispenser body 820.

As shown in fig. 22, the supplementary airbag 830 includes a mounting member 831 and a balloon 832 coupled to the mounting member 831. An intake valve 840 is provided on the mounting member 831, the intake valve 840 includes a valve sheet 841, and the elastic valve sheet 841 is connected to the top of the mounting member 831 by an elastic strip 842.

When the supplemental air bag 830 is mounted to the dispenser body 820, the resilient strip 842 flexes resiliently, as shown in fig. 21, and the valve plate 841 abuts an opening in the interior cavity of the dispenser body 820 leading to the interior of the supplemental air bag 830.

Fig. 23 shows another implementation of the intake valve 840, in which the valve sheet 841 is connected to the inner wall of the mounting member 831 of the supplementary airbag 830 by a plurality of elastic strips 842 (three are shown).

< ninth embodiment >

Fig. 24-26 illustrate a ninth embodiment of the present application wherein a product dispenser 900 is mounted to the container 10. The specific structures described above with respect to the first to eighth embodiments are also applicable to the ninth embodiment without contrary description or conflict. The structure of the ninth embodiment different from the first to eighth embodiments will be specifically described below.

As shown in fig. 24, the product dispenser 900 includes a supplemental bladder 930, the supplemental bladder 930 including a bladder in the form of a bellows so that it can expand and contract in an axial direction. Fig. 25 shows a perspective view of a bellows-type supplementary balloon 930.

In addition, the balloon body of the supplemental balloon 930 may also be radially expandable and contractible, as shown in fig. 26.

Of course, a radially and axially stretchable balloon 930 is also within the scope of the present application.

< tenth embodiment >

Fig. 27 shows a ninth embodiment of the application in which a product dispenser 1000 is mounted on a container 10. The specific structures described above with respect to the first to ninth embodiments are also applicable to the tenth embodiment without contrary description or conflict. The structure of the tenth embodiment different from the first to ninth embodiments will be specifically described below.

As shown in fig. 27, a product dispenser 800 is mounted on the container 10, and the product dispenser 1000 is a hand-held dispenser. The product dispenser 800 includes a supplemental air bladder 1030, the supplemental air bladder 1030 being connected below the product dispenser 1000 and within the container 10.

Claims (19)

1. A product dispenser mounted on a container for dispensing a liquid or semi-liquid product outwardly from the container, the product dispenser comprising a supplementary bladder having at least one opening, wherein the at least one opening communicates with the exterior of the container to receive ambient air from the exterior of the container or communicates with the interior of the container to supplement the interior of the container with gas to compensate for negative pressure generated in the container.

2. The product dispenser of claim 1, wherein the supplemental bladder is pre-filled with a gas, the at least one opening of the supplemental bladder being in communication with the interior of the container, the supplemental gas being supplied from the supplemental bladder to the interior of the container when dispensing product from the container.

3. The product dispenser of claim 2, wherein the product dispenser is a push-type product dispenser and has a ram, a sleeve, and a cylinder, a piston rod being connected below the ram, a piston being provided on the piston, the piston being in sealing engagement with an inner wall of the cylinder.

4. A product dispenser as claimed in claim 3, wherein the refill pocket is disposed in a space defined by the fit of the head and the mouthpiece.

5. The product dispenser of claim 4, wherein a balance vent is formed in a sidewall of the cylinder, the balance vent being in communication with the at least one opening of the supplemental bladder.

6. The product dispenser of claim 5, wherein the piston is configured such that when the product dispenser is not depressed, the piston is positioned at the balance vent to close the balance vent, and when the product dispenser is depressed to dispense product, the piston moves downward away from the balance vent to open the balance vent.

7. The product dispenser of claim 4, wherein a cylinder plug is mounted to the cylinder, and wherein a balancing air vent is provided in communication with the at least one opening of the supplemental air bladder.

8. A product dispenser as claimed in claim 7, wherein a one-way inlet valve is mounted to the balance vent, the one-way inlet valve being arranged to allow gas in the supplementary reservoir to flow into the reservoir but to prevent gas from flowing back from the reservoir into the supplementary reservoir.

9. A product dispenser as claimed in claim 2, wherein the supplementary bag is provided on the outside of the container, wherein a container opening is provided in the container, the container opening being in communication with the at least one opening of the supplementary bag, and a one-way valve being provided in the container opening, the one-way valve being arranged to allow gas in the supplementary bag to flow into the container but to prevent flow from the container towards the supplementary bag.

10. The product dispenser of claim 1, wherein the supplementary air chamber is disposed inside the container and communicates with the outside of the container via a balancing air hole formed on the product dispenser, such that when negative pressure is generated in the container by dispensing product from the container to the outside, external air can flow into the supplementary air chamber via the balancing air hole.

11. The product dispenser of claim 10, wherein the product dispenser is a push-type product dispenser and has a ram, a sleeve, and a cylinder, a piston rod is connected below the ram, a piston is disposed on the piston, and a sealing fit is formed between the piston and an inner wall of the cylinder, wherein the balance air hole is disposed on a side wall of the cylinder or on the sleeve.

12. The product dispenser of claim 10, wherein the product dispenser includes a mouthpiece and a dispenser body, the dispenser body is disposed within the mouthpiece, the supplemental bladder is coupled to the dispenser body, and the at least one opening of the supplemental bladder is in communication with the interior cavity of the dispenser body.

13. The product dispenser of claim 12, wherein a first through hole is formed in a side wall of the mouthpiece and a second through hole is formed in a side wall of the dispenser body, the second through hole being aligned with the first through hole and extending into the interior cavity of the dispenser body.

14. The product dispenser of claim 12, further comprising an air inlet valve configured to allow external air into the supplemental air bladder to block air flow out of the supplemental air bladder.

15. The product dispenser of claim 14, wherein the air inlet valve is disposed in the interior cavity of the dispenser body, wherein the air inlet valve includes a mounting portion and a resilient valve plate, the mounting portion being mounted in the interior cavity of the dispenser body, the resilient valve plate being disposed between the air refill bladder and the interior cavity of the dispenser body.

16. The product dispenser of claim 14, wherein the supplemental air bladder includes a mounting member for mounting the supplemental air bladder to the dispenser body and the air inlet valve is formed on the mounting member, wherein the air inlet valve includes a valve plate connected to the mounting member by at least one resilient strip, the valve plate of the air inlet valve being biasable against an inlet from the supplemental air bladder into the interior cavity of the dispenser body when the mounting member is mounted to the dispenser body.

17. The product dispenser of claim 1, wherein the product dispenser is a hand-held dispenser, and the supplemental bladder of the product dispenser is connected below the product dispenser and within the container.

18. Product dispenser according to claim 1, characterized in that the supplementary bladder is radially expandable and/or the supplementary bladder is axially expandable.

19. A container comprising a product dispenser according to any one of claims 1 to 18.