CN115339751A

CN115339751A - A kind of container

Info

Publication number: CN115339751A
Application number: CN202110517824.6A
Authority: CN
Inventors: 王雁
Original assignee: Albea Plastic Metallizing Technologies Shanghai Co Ltd
Current assignee: Albea Plastic Metallizing Technologies Shanghai Co Ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-11-15

Abstract

The application provides a container, which comprises a shell, a first piston, a second piston and a pressing piece, wherein the first piston is arranged in the shell in a sliding mode in a sealing mode, the first piston and the shell are matched together to form a first cavity, and a through hole and an air vent which can be communicated with the first cavity are formed in the first piston; the second piston is hermetically and slidably arranged in the first piston, the second piston and the first piston are matched together to form a second cavity, and the vent hole can be closed or opened by the second piston in the sliding direction of the second piston so as to isolate or communicate the first cavity from the atmosphere; the pressing piece is hermetically and slidably arranged on the second piston in a penetrating mode, an outflow channel and an outflow port communicated with the outflow channel are formed in the pressing piece, and the outflow port can be closed or opened by the second piston in the sliding direction of the pressing piece. The fluid in the container can be taken out and used through pressing operation, and the operation is simple.

Description

A kind of container

Technical Field

The present application relates to a fluid storage and dispensing device, and more particularly to a container.

Background

Cosmetics in a fluid state are generally stored in a bottle body, and both an open pouring type bottle body and a dropper type bottle body have the problem of inconvenient use, for example, the open pouring type bottle body needs to be turned over so as to pour out the cosmetics, and users have inconvenience in use.

Disclosure of Invention

In view of the above, embodiments of the present application provide a container that solves at least the above-mentioned problems.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

the present application provides a container comprising:

a housing;

the first piston is arranged in the shell in a sliding mode in a sealing mode, the first piston and the shell are matched together to form a first cavity, and a through flow port and a vent which can be communicated with the first cavity are formed in the first piston;

a second piston hermetically and slidably disposed in the first piston, the second piston and the first piston cooperating together to form a second cavity, the vent being capable of being closed or opened by the second piston in a sliding direction of the second piston to isolate or communicate the first cavity from atmosphere;

the pressing piece is hermetically and slidably arranged on the second piston in a penetrating mode, an outflow channel and an outflow port communicated with the outflow channel are formed in the pressing piece, and the outflow port can be closed or opened by the second piston in the sliding direction of the pressing piece.

In some embodiments, during the sliding of the pressing member from the top side to the bottom side of the container, the first piston and the second piston are driven to slide synchronously to isolate the first cavity from the vent, and then the pressing member is driven to open the vent and then the second piston is driven to slide to open the vent.

In some embodiments, a frictional resistance between the first piston and the second piston is greater than a frictional resistance between the second piston and the press piece, and a frictional resistance between the second piston and the press piece is greater than a frictional resistance between the first piston and the housing.

In some embodiments, the second piston slides a preset distance to open the vent.

In some embodiments, the container includes an elastic restoring member that provides a force to drive the restoring of the pressing member, the first piston, and the second piston.

In some embodiments, a limiting portion is formed at a bottom end of the pressing member, the limiting portion and the elastic resetting member are located in the second cavity, and two ends of the elastic resetting member are respectively connected with the shell and the limiting portion, so that the limiting portion abuts against the second piston after the pressing member slides to a resetting distance.

In some embodiments, the vent is formed on a peripheral side of the first piston; and/or the through flow opening is formed at the bottom of the first piston.

In some embodiments, the second piston is formed with a third cavity and an inlet port communicating with the third cavity, and the outlet port can communicate with or be isolated from the third cavity in the sliding direction of the pressing member; in the sliding direction of the second piston, the inlet port can be communicated with or isolated from the second cavity.

In some embodiments, the housing is formed with a housing chamber housing the first piston, the housing chamber being in communication with the atmosphere;

the first piston comprises an accommodating body with an open top end and an annular sealing part arranged on the periphery of the accommodating body in a surrounding mode, and the annular sealing part is in sealing abutting joint with the inner peripheral side face of the shell so as to form the first cavity in a matching mode;

the second piston is arranged on the inner peripheral side face of the containing body in a sliding mode in a sealing mode so as to form the second cavity in a matching mode.

In some embodiments, the container includes a first cylindrical portion with an open top end, a second cylindrical portion located at a bottom side of the first cylindrical portion, and a tapered portion connecting the first cylindrical portion and the second cylindrical portion, an inner diameter of the first cylindrical portion is larger than an inner diameter of the second cylindrical portion, the second piston is slidably and sealingly disposed in the first cylindrical portion, and the second piston cooperates with the first cylindrical portion, the second cylindrical portion, and the tapered portion to form the second cavity, the vent is formed on a peripheral side surface of the first cylindrical portion, and a bottom end of the second cylindrical portion is open to form the vent.

In some embodiments, the second piston includes a closing body covering the top end opening of the first cylindrical portion and a sleeve sealingly penetrating the closing body, a peripheral side surface of the closing body is in sealing abutment with an inner peripheral side surface of the first cylindrical portion, a third cavity is formed in the sleeve, a bottom end of the third cavity is open to form a flow inlet, one end of the pressing member is sealingly slidably arranged in the sleeve, and the flow outlet can be closed or opened by the sleeve.

In some embodiments, the sealing body includes a sleeve body, an annular flange, and an annular plate connecting the sleeve body and the annular flange, the outer circumferential surface of the sleeve is formed with a step portion, the sleeve body is sealingly sleeved outside the sleeve, and the bottom of the sleeve body abuts against the top surface of the step portion.

In some embodiments, the housing includes a housing body with an open top end, and a housing cover covering the open top end of the housing body, and the housing body and the housing cover jointly enclose the accommodating cavity.

In some embodiments, a through hole is formed in the top of the housing, the pressing element includes a pressing head located outside the housing, a connecting pipe penetrating the through hole, and a pressing pipe located inside the housing, the pressing pipe is sealingly and slidably disposed on the second piston, the pressing pipe is open at a top end and closed at a bottom end, the top end of the connecting pipe is connected to the pressing head, the bottom end of the connecting pipe is connected to the pressing pipe, the pressing pipe and a space inside the connecting pipe together form the outflow channel, the outflow port is formed in a circumferential side surface of the pressing pipe, and the pressing pipe can abut against the second piston to drive the second piston to slide.

In some embodiments, the crimp tube comprises:

the bottom end of the connecting pipe can be restorably deformed to open the top end of the pressing pipe to be inserted into the first pipe body, and the bottom end of the first pipe body can be abutted against the top end of the second piston to drive the second piston to slide;

the second pipe body is open at the top end and closed at the bottom end, the second pipe body penetrates through the second piston in a sealing and sliding mode, the outflow port is formed in the peripheral side face of the second pipe body, the top end of the second pipe body can be restored to prop open the open bottom end of the first pipe body in a deformable mode to be inserted into the first pipe body, a limiting portion is formed at the bottom end of the second pipe body, the limiting portion is located on one side, away from the first pipe body, of the second piston, and the limiting portion can abut against the second piston.

In some embodiments, one of the inner peripheral side surface of the first pipe and the outer peripheral side surface of the second pipe is formed with a first projection, and the other of the inner peripheral side surface of the first pipe and the outer peripheral side surface of the second pipe is formed with a first groove, and the first projection is caught in the first groove.

In some embodiments, one of the outer circumferential side surface of the connection pipe and the inner circumferential side surface of the first pipe body is formed with a second protrusion, and the other of the outer circumferential side surface of the connection pipe and the inner circumferential side surface of the first pipe body is formed with a second groove, and the second protrusion is caught in the second groove.

In some embodiments, the pressing head is disc-shaped, the top surface of the pressing head is recessed to form a flow containing area, and the flow containing area is provided with a flow taking port communicated with the outflow channel.

In some embodiments, the top end of the pressure tube is formed with an annular flange located within the housing, the projection of the through hole being located within the projection of the annular flange in a top view projection of the container, the annular flange being capable of abutting an interior top surface of the housing.

The application provides a container, when the pressing piece is in initial position, the second piston seals the blow vent and flows out the mouth, and first cavity and second cavity all are encapsulated situation promptly, and like this, the fluid in first cavity and the second cavity is isolated with the atmosphere to guarantee to a certain extent that the fluid in the container is not contaminated. When fluid is required to be taken, the pressing piece is pressed, the volume of the first cavity and the volume of the second cavity are both reduced, the fluid in the first cavity enters the second cavity through the through-flow opening, the fluid in the second cavity enters the outflow channel through the outflow opening, and then flows out of the container from the outflow channel. On the one hand, simple structure is reliable, through pressing the pressing piece, can extrude the fluid in first cavity and the second cavity from the passageway that outflows, and the user only need press the operation, can take the fluid in the container, and easy operation has effectively improved the user and has taken the operating efficiency of fluid. On the other hand, when the pressing piece is in the initial position, the first cavity and the second cavity are in a sealed state, so that the pressing piece is driven to slide towards the bottom side by large pressing force, and therefore fluid can be prevented from flowing out of the container under the condition that a user mistakenly touches the pressing piece, and the operation reliability is high. In another aspect, the fluid is extruded by reducing the volume of the first cavity and the volume of the second cavity, so that the taking amount of the fluid is controlled to a certain extent, excessive fluid extrusion can be avoided, and the user experience is improved.

Drawings

FIG. 1 is a schematic diagram of a container according to an embodiment of the present application;

FIG. 2 is an exploded view of the structure shown in FIG. 1;

FIG. 3 is a cross-sectional view of the structure shown in FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3, schematically illustrating the cooperating structure of the pressing member, the first piston and the second piston;

FIG. 5 is a cross-sectional view of a container according to another embodiment of the present application;

FIG. 6 is a schematic view of the arrangement of FIG. 5 in a first, depressed state, schematically showing the state of the through-flow opening being sealed;

FIG. 7 is a schematic view of the structure of FIG. 5 in a second pressing state, schematically illustrating a state in which the spout is opened;

FIG. 8 is a schematic structural view of the structure shown in FIG. 5 in a third pressing state, schematically illustrating a state in which the vent is opened;

FIG. 9 is a schematic view of the structure of FIG. 5 in a first reset state, schematically illustrating a state in which the vent is open;

FIG. 10 is a schematic view of the structure of FIG. 5 in a second, reset state, schematically illustrating a state in which the tap is closed; and

FIG. 11 is a cross-sectional view of a container according to yet another embodiment of the present application.

Description of reference numerals:

a housing 10; the accommodation chamber 10a; a housing body 11; a case cover 12; a through hole 13; a first piston 20; a first cavity 20a; a flow port 20b; a vent 20c; the containing body 21; an annular seal portion 22; a second piston 30; a second lumen 30a; a third cavity 30b; an inlet 30c; an enclosure 31; a sleeve 32; a pressing member 40; an outflow passage 40a; an outlet 40b; a stopper portion 41; a pressing head 42; a flow-containing area 42a; a flow taking port 42a'; a connecting pipe 43; a pressure tube 44; an elastic restoring member 50; the first cylindrical portion 211; a second cylindrical portion 212; a tapered portion 213; a sheath body 311; an annular plate 312; an annular rim 313; a step portion 322; the second protrusion 431; a first tube 441; a second groove 441a; a second tube 442; the first grooves 442a; the annular flange 443; the first protrusion 4411.

Detailed Description

It should be noted that the various embodiments/implementations provided in this application can be combined with each other without contradiction. The detailed description in the specific embodiments should be understood as an illustration of the spirit of the application and not as an undue limitation on the application.

In the description of the present application, the terms "top", "bottom" orientation or positional relationship are based on the orientation or positional relationship shown in FIG. 5. It is to be understood that such directional terms are merely used to facilitate the description of the application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must be constructed and operated in a particular orientation or orientation, and thus should not be considered as limiting the application. The term "first/second" merely distinguishes between different objects and does not denote the same or a relationship between the two.

According to an embodiment of the present disclosure, there is provided a container, as shown in fig. 1, 2 and 5, including a housing 10, a first piston 20, a second piston 30, and a pressing member 40.

The first piston 20 is slidably disposed in the housing 10 in a sealing manner, the first piston 20 and the housing 10 cooperate to form a first cavity 20a, and the first piston 20 is formed with a vent port 20b and a vent port 20c both capable of communicating with the first cavity 20 a. That is, the first piston 20 is dynamically sealed with the housing 10, and the first piston 20 is sealingly slid along the housing 10 to change the volume of the first chamber 20 a.

The second piston 30 is sealingly and slidably disposed in the first piston 20, the second piston 30 and the first piston 20 cooperate to form a second chamber 30a, and the vent 20c can be closed or opened by the second piston 30 in the sliding direction of the second piston 30 to isolate or communicate the first chamber 20a from the atmosphere. The flow port 20b communicates the first chamber 20a and the second chamber 30a. The first piston 20 and the second piston 30 are dynamically sealed, and the second piston 30 slides along the first piston 20 in a sealing manner to change the volume of the second cavity 30a and can open or close the vent 20c.

In a state where the second piston 30 closes the vent 20c, the first chamber 20a is isolated from the atmosphere, that is, the first chamber 20a is in a sealed state, so that the first piston 20 slides along the housing 10 in a sealed manner, the volume of the first chamber 20a is reduced, and the fluid in the first chamber 20a enters the second chamber 30a through the vent 20b. Under the state that the vent hole 20c is opened to the second piston 30, the first cavity 20a communicates with the atmosphere, can improve the reliability of the first piston 20 in operation, reduced because of the unable smooth business turn over of air and lead to the probability that the pressing piece 40 is stuck, still be convenient for after taking the fluid, the air gets into first cavity 20a and second cavity 30a through getting into vent hole 20c to make first piston 20 and second piston 30 reset smoothly, avoid because the internal-external pressure difference is stuck.

The pressing member 40 is sealingly slidably disposed through the second piston 30, the pressing member 40 is formed with an outlet passage 40a and an outlet 40b communicating with the outlet passage 40a, and the outlet 40b is closable or openable by the second piston 30 in a sliding direction of the pressing member 40. The pressing member 40 can drive the first piston 20 and the second piston 30 to slide. The pressing member 40 and the second piston 30 are dynamically sealed, the pressing member 40 slides along the second piston 30 in a sealing manner, and the outlet 40b can be opened or closed. In a state where the outlet 40b is opened, the outlet 40b communicates the second chamber 30a with the outlet passage 40a, so that the fluid in the second chamber 30a enters the outlet passage 40a through the outlet 40b and then flows out of the container through the outlet passage 40a.

In the container provided by the embodiment of the present application, when the pressing member 40 is in the initial position, the second piston 30 seals the vent 20c and the outflow port 40b, that is, the first cavity 20a and the second cavity 30a are both in a sealed state, so that the fluid in the first cavity 20a and the fluid in the second cavity 30a are isolated from the atmosphere, thereby ensuring that the fluid in the container is not contaminated to a certain extent. When the fluid is required to be taken, the pressing member 40 is pressed, the volume of the first cavity 20a and the volume of the second cavity 30a are both reduced, the fluid in the first cavity 20a enters the second cavity 30a through the through-flow port 20b, and the fluid in the second cavity 30a enters the outflow channel 40a through the outflow port 40b and then flows out of the container from the outflow channel 40a.

On the one hand, the container is simple and reliable in structure, the fluid in the first cavity 20a and the fluid in the second cavity 30a can be extruded out of the outflow channel 40a by pressing the pressing piece 40, the user only needs to press the pressing piece to take the fluid in the container, the operation is simple, and the operation efficiency of taking the fluid by the user is effectively improved.

On the other hand, since the first and

second cavities

20a and 30a are sealed when the pressing member 40 is at the initial position, a large pressing force is required to drive the pressing member 40 to slide toward the bottom side, and thus, the fluid is prevented from flowing out of the container when the user accidentally touches the pressing member 40, and the operation reliability is high.

In another aspect, the fluid is squeezed out by reducing the volume of the first cavity 20a and the volume of the second cavity 30a, so that the taken amount of the fluid is controlled to a certain extent, excessive fluid can be prevented from being squeezed out, and the user experience is improved.

The container of the embodiments of the present application may be used in any manner, and the specific material of the container may be used for storing and dispensing the fluid, for example, in one embodiment, the container may be used for storing and dispensing the fluid-like cosmetics, such as cosmetics in liquid or powder form, and the like.

The material of the first piston 20 and the second piston 30 is not limited, and in an exemplary embodiment, the first piston 20 and the second piston 30 are both made of a flexible material, such as rubber.

The specific location of the through-flow port 20b is not limited, and in an exemplary embodiment, the through-flow port 20b is formed at the bottom of the first piston 20. Thus, when the bottom of the first piston 20 abuts against the housing 10, the housing 10 can close the through-flow port 20b to isolate the first cavity 20a from the through-flow port 20b.

The shape of the flow opening 20b is not limited, and exemplary shapes of the flow opening 20b include, but are not limited to, circular.

The specific location of the vent 20c is not limited, and in an exemplary embodiment, the vent 20c is formed on the peripheral side surface of the first piston 20. In this way, the second piston 30 is in sealing sliding contact with the peripheral side surface of the first piston 20, and the second piston 30 can close or open the vent hole 20c on the sliding path of the second piston 30.

The number of the vents 20c is not limited, and in an exemplary embodiment, the number of the vents 20c is one. In another embodiment, the number of the air vents 20c is plural, and the plural air vents 20c are spaced apart along the circumference of the first piston 20.

In the present embodiment, the number of the plurality of the fingers is two or more.

The shape of the vent 20c is not limited, and exemplary shapes of the vent 20c include, but are not limited to, circular.

In an embodiment of the present application, referring to fig. 5, during the process of sliding the pressing member 40 from the top side to the bottom side of the container, the first piston 20 and the second piston 30 are driven to slide synchronously to isolate the first cavity 20a from the vent 20b, and then the pressing member 40 is driven to open the vent 40b and the second piston 30 is driven to slide to open the vent 20c.

When fluid needs to be taken, in a first step, as shown in fig. 6, the pressing member 40 slides from the initial position to the bottom side of the container, the pressing member 40 first drives the first piston 20 and the second piston 30 to slide synchronously towards the bottom side relative to the housing 10, there is no relative sliding between the first piston 20 and the second piston 30, there is no relative sliding between the second piston 30 and the pressing member 40, the second piston 30 can keep a state of closing the vent 20c and the outflow port 40b, the volume of the first cavity 20a is reduced, so that the fluid in the first cavity 20a flows into the second cavity 30a through the vent 20b until the first piston 20 abuts against the housing 10, the first piston 20 stops sliding, and the outflow port 20b is closed by the housing 10, so as to isolate the first cavity 20a from the outflow port 20b, thereby preventing the fluid in the first cavity 20a from continuously flowing into the second cavity 30a.

In a second step, as shown in fig. 7, the first piston 20 and the second piston 30 are kept relatively stationary, and the pressing member 40 is slid toward the bottom side with respect to the second piston 30 to open the outflow port 40b.

Third, referring to fig. 8, the pressing member 40 and the second piston 30 are synchronously slid toward the bottom side with respect to the first piston 20, the volume of the second chamber 30a is reduced, and the fluid flows from the outlet 40b into the outlet passage 40a and flows out of the container from the outlet passage 40a; the vent 20c is opened synchronously, the first cavity 20a is communicated with the atmosphere, and the balance between the air pressure of the first cavity 20a and the external air pressure is ensured.

In the process of sliding the pressing member 40 from the bottom side to the top side of the container after the fluid is completely removed, as shown in fig. 9, the pressing member 40, the first piston 20 and the second piston 30 are slid together toward the top side with respect to the housing 10, the vent hole 20b is opened, and the gas from the vent hole 20c is introduced into the first chamber 20a and the second chamber 30a, thereby facilitating the restoration of the first piston 20 and the second piston 30.

In a second step, as shown in fig. 10, the pressing member 40 slides to the top side with respect to the second piston 30, and the outflow port 40b is closed, so that the fluid in the outflow passage 40a is prevented from flowing backward.

In a third step, as shown in fig. 5, the pressing member 40 and the second piston 30 are synchronously slid toward the top side with respect to the first piston 20, the vent hole 20c is closed, and the pressing member 40 is restored to the original position.

In an embodiment of the present application, referring to fig. 5, the second piston 30 slides a predetermined distance to open the vent 20c. The amount of fluid to be taken is set by setting the preset distance of the second piston 30. The second piston 30 slides relative to the first piston 20 by a preset distance, the vent 20c is opened, the second piston 30 stops sliding, and the same taking amount of the fluid flowing out when the pressing piece 40 is pressed every time is realized.

In an embodiment of the present application, referring to fig. 5, a frictional resistance between the first piston 20 and the second piston 30 is greater than a frictional resistance between the second piston 30 and the pressing member 40, and a frictional resistance between the second piston 30 and the pressing member 40 is greater than a frictional resistance between the first piston 20 and the housing 10. Through setting up different sliding friction resistance at first piston 20, second piston 30 and pressing part 40, can guarantee that each component goes on according to predetermineeing the motion mode in the container, can guarantee that the fluid extrudes smoothly, simultaneously, components and parts pass through frictional mode drive, need not to design other drive structures between each structure, and the drive mode is simple.

The source of the force for restoring the pressing member 40, the first piston 20 and the second piston 30 is not limited, and in an embodiment of the present application, the user pulls the pressing member 40 toward the top side to restore the pressing member 40, the first piston 20 and the second piston 30. In another embodiment of the present application, referring to fig. 4, the container includes an elastic restoring member 50, and the elastic restoring member 50 provides a force for restoring the pressing member 40, the first piston 20, and the second piston 30. The restoring force provided by the elastic restoring member 50 may automatically restore the pressed pressing member 40, the first piston 20, and the second piston 30 to the original positions before the pressing. Through setting up elasticity piece 50 that resets, the user need not the manual effort of applying and reset, and the operation is more humanized, promotes user experience.

The specific structure of the elastic restoring member 50 is not limited, and the elastic restoring member 50 includes, but not limited to, a spring, an elastic bellows, or a rubber ball, for example.

In an embodiment of the present application, referring to fig. 11, a bottom end of the pressing member 40 forms a limiting portion 41, the limiting portion 41 and the elastic restoring member 50 are located in the second cavity 30a, and two ends of the elastic restoring member 50 are respectively connected to the housing 10 and the limiting portion 41, so that the limiting portion 41 abuts against the second piston 30 after the pressing member 40 slides to a restoring distance. When the pressing member 40 slides to the top side, the limiting portion 41 abuts against the second piston 30 to drive the second piston 30 and the first piston 20 to return.

The position-limiting portion 41 may further be provided with a structure for facilitating installation of the elastic restoring member 50, for example, in the embodiment of the present application, the elastic restoring member 50 is sleeved on the protruding shaft at the bottom of the position-limiting portion 41. Thus, the protruding shaft facilitates the elastic return guide of the elastic return member 50.

The specific structure shape of the position-limiting portion 41 is not limited, and in an exemplary embodiment, the position-limiting portion 41 is an annular boss. In another embodiment, the position-limiting portion 41 is a snap spring structure.

In an embodiment of the present application, referring to fig. 3 and 4, the second piston 30 is formed with a third cavity 30b and a fluid inlet 30c communicating with the third cavity 30b, and the fluid outlet 40b can communicate with or be isolated from the third cavity 30b in the sliding direction of the pressing member 40; the intake port 30c can communicate with or be isolated from the second chamber 30a in the sliding direction of the second piston 30. Specifically, during the sliding of the pressing member 40 toward the bottom side of the container, the pressing member 40 can extend into the third cavity 30b, so that the outlet 40b is communicated with the third cavity 30b, and the fluid in the third cavity 30b can enter the outlet passage 40a through the outlet 40b. During sliding of the second piston 30 towards the bottom side of the container, the inlet 30c is isolated from the second chamber 30a, i.e. the inlet 30c is closed, thereby preventing more fluid in the second chamber 30a from entering the third chamber 30b and allowing a limited amount of fluid in the third chamber 30b to flow out of the container. In this way, each time the pressing piece 40 is pressed until the inflow port 30c is closed, the fluid does not flow out, so that the limited amount of fluid can be conveniently taken, and the user experience is improved. After the fluid is taken out, the outflow port 40b is closed by the second piston 30 during the sliding of the pressing member 40 to the top side of the container, and the outflow port 40b is isolated from the third cavity 30b; during the sliding of the second piston 30 towards the top side of the container, the inlet port 30c is opened and the inlet port 30c communicates with the second chamber 30a.

The specific manner of isolating the inlet 30c is not limited, and for example, in one embodiment, during the process that the second piston 30 slides to the bottom side of the container, the second piston 30 abuts against the housing 10, so that the housing 10 closes the inlet 30c.

The specific location of the inlet 30c is not limited, and in an exemplary embodiment, the inlet 30c is formed at the bottom of the second piston 30. After the second lumen 30a is squeezed, fluid will be forced into the third lumen 30a from the inlet port 30c. Further disposed within the second piston 30 is a third chamber 30b which is capable of communicating with the second chamber 30a to direct a flow path for the fluid to exit so as to substantially expel all of the fluid from the container. Therefore, the fluid is guided to flow into the third cavity 30b from the bottom of the housing 10, the residue of the fluid on the inner wall of the container can be reduced, and the use efficiency of the fluid in the container can be improved.

In an embodiment of the present application, referring to fig. 3, the housing 10 is formed with an accommodating chamber 10a accommodating the first piston 20, and the accommodating chamber 10a is communicated with the atmosphere. The accommodation chamber 10a is communicated with the atmosphere, so that the internal and external air pressures of the first chamber 20a are balanced after the pressing member 40 is reset. Optionally, the bottom of the inner wall of the casing 10 may be provided with a tapered slope converging toward the bottom center, and when the first piston 20 is pressed, the fluid in the first cavity 20a may flow into the bottom center of the casing 10 along the tapered slope, so as to reduce the residue of the fluid on the inner wall of the container, and improve the use efficiency of the fluid in the container.

The first piston 20 comprises an accommodating body 21 with an open top end and an annular sealing part 22 surrounding the outer periphery of the accommodating body 21, and the annular sealing part 22 is in sealing abutment with the inner peripheral side surface of the shell 10 so as to form a first cavity 20a in a matching manner; the second piston 30 is sealingly slidably disposed on an inner peripheral side surface of the accommodating body 21 to cooperatively form a second chamber 30a. The accommodating body 21 is used for accommodating the second piston 30, and the annular sealing portion 22 provided around the outer periphery of the accommodating body 21 is used for sealing between the first piston 20 and the housing 10. Therefore, the container has simple structure and lower cost.

In some embodiments, the first piston 20 may be a one-piece structure. Thus, the first piston 20 is compact and reliable.

In an embodiment of the present application, referring to fig. 3, the accommodating body 21 further includes a first cylindrical portion 211 with an open top end, a second cylindrical portion 212 located at a bottom side of the first cylindrical portion 211, and a tapered portion 213 connecting the first cylindrical portion 211 and the second cylindrical portion 212, an inner diameter of the first cylindrical portion 211 is larger than an inner diameter of the second cylindrical portion 212, the second piston 30 is sealingly and slidably disposed in the first cylindrical portion 211, and the second piston 30 cooperates with the first cylindrical portion 211, the second cylindrical portion 212, and the tapered portion 213 to form a second cavity 30a, the vent 20c is formed on a peripheral side surface of the first cylindrical portion 211, and a bottom end of the second cylindrical portion 212 is open to form the vent 20b. Through the arrangement of the first cylindrical portion 211, the second cylindrical portion 212 and the tapered portion 213, the accommodating body 21 forms a funnel-shaped structure, the accommodating body 21 of the funnel-shaped structure has a flow guiding effect, and the fluid in the second cavity 30a can intensively flow to the through-flow opening 20b along with the reduction of the volume of the second cavity 30a, so that the fluid in the container can be fully extruded, the residue of the fluid on the inner wall of the container can be reduced, and the use efficiency of the fluid in the container can be improved.

In an embodiment of the present application, referring to fig. 3 and 4, the second piston 30 includes a closing body 31 covering the top end opening of the first cylindrical portion 211 and a sleeve 32 sealingly penetrating the closing body 31, an outer circumferential surface of the closing body 31 is in sealing contact with an inner circumferential surface of the first cylindrical portion 211, a third cavity 30b is formed in the sleeve 32, a bottom end of the third cavity 30b is open to form a flow inlet 30c, one end of the pressing member 40 is sealingly slidably disposed in the sleeve 32, and the flow outlet 40b can be closed or opened by the sleeve 32.

Since the fluid in the second chamber 30a needs to enter the third chamber 30b through the inlet 30c and then flow out of the third chamber 30b through the outlet 40b. When the bottom of the sleeve 32 abuts against the housing 10, the inlet 30c is isolated from the second chamber 30a, thereby facilitating the limited amount of fluid to be taken out and avoiding the excessive amount of fluid to be taken out to a certain extent. Thus, when the pressing member 40 is pressed and the pressing member 40 brings the bottom of the sleeve 32 into contact with the housing 10, the pressing member 40 cannot be further pressed against the bottom side of the container, and the quantitative dispensing and distribution is realized. Illustratively, the amount of fluid taken can be adjusted by adjusting the distance between the bottom of the sleeve 32 and the housing 10.

Meanwhile, besides the pressing stroke of the piston, the inner diameter of the piston can be adjusted, and quantitative taking is achieved. Because the inner diameter of the first piston 20 is larger than that of the second piston 30, and the inner diameter of the second piston 30 is larger than that of the sleeve 32, the flow rate of the fluid extruded from the first cavity 20a is larger, the flow rate of the fluid extruded from the second cavity 30a is smaller, and the flow rate of the fluid extruded from the third cavity 30b is the smallest in the unit stroke, compared with a container with only a single cavity, the flow rate of the fluid can be adjusted by the inner diameter of the sleeve 32, that is, the fluid is extruded from the third cavity 30b in the sleeve 32 with the smallest inner diameter each time, therefore, the container of the embodiment of the present application can also control the flow rate of the fluid extruded each time by controlling the inner diameter of the sleeve 32, which can effectively reduce waste caused by excessive fluid extruded by a user, and improve the use efficiency of the fluid in the container.

In an embodiment of the present application, referring to fig. 3 and 4, the closing body 31 includes a sleeve body 311, an annular flange 313, and an annular plate 312 connecting the sleeve body 311 and the annular flange 313, a step 322 is formed on an outer peripheral surface of the sleeve 32, the sleeve body 311 is sealingly sleeved outside the sleeve 32, and a bottom of the sleeve body 311 abuts against a top surface of the step 322. The step portion 322 has a limiting function, and the closing body 31 is abutted by the top surface of the step portion 322, so that the closing body 31 and the sleeve 32 slide synchronously.

In an embodiment of the present application, referring to fig. 1 and 3, the housing 10 includes a housing body 11 with an open top end and a housing cover 12 covering the open top end of the housing body 11, and the housing body 11 and the housing cover 12 jointly enclose to form an accommodating cavity 10a. Exemplarily, the shell body 11 and the shell cover 12 can be connected in various manners such as threads and clamping, in order to ensure that the piston inside the accommodating cavity 10a can slide smoothly, the shell body 11 and the shell cover 12 are not connected in a sealing manner, so that the gas outside the shell cover 12 can smoothly enter and exit the accommodating cavity 10a. Meanwhile, in the resetting process, the first piston 20 may slip off the housing 11 due to an excessively large sliding distance to the top, and the housing cover 12 has a limiting effect on the sliding of the first piston 20, so that the first piston 20 is prevented from slipping off the housing 11.

In an embodiment of the present application, referring to fig. 1 and 3, a through hole 13 is formed at the top of the housing 10. In an exemplary embodiment, the through-hole 13 is formed in the cover 12. The pressing member 40 includes a pressing head 42 located outside the housing 10, a connecting pipe 43 penetrating through the through hole 13, and a pressing pipe 44 located inside the housing 10, the pressing pipe 44 hermetically slides on the second piston 30, the top end of the pressing pipe 44 is open and the bottom end thereof is closed, the top end of the connecting pipe 43 is connected with the pressing head 42, and the bottom end of the connecting pipe 43 is connected with the pressing pipe 44. Specifically, the limiting portion 41 is formed at the bottom of the pressing tube 44, during assembly, the second piston 30 is sleeved and abutted to the limiting portion 41 from the top end of the pressing tube 44, then the bottom end of the connecting tube 43 is connected with the pressing tube 44, and the pressing piece 40 is disassembled into a connecting structure with the connecting tube 43 and the pressing tube 44, so that the second piston 30 can be conveniently assembled. The pressure pipe 44 and the connecting pipe 43 together form an outlet passage 40a, the outlet 40b is formed on the circumferential surface of the pressure pipe 44, and the pressure pipe 44 can be in contact with the second piston 30 to drive the second piston 30 to slide. Since the outlet 40b is formed on the circumferential side surface of the pressure pipe 44, the outlet 40b is closed by the second piston 30 when not pressed, and contamination of the fluid in the container by the outside air can be prevented.

The specific shape of the pressing head 42 is not limited, and in an exemplary embodiment, the pressing head 42 has a flat plate shape or a boss shape. In this way, the user can easily press the pressing member 40 toward the bottom. The pressing head 42 and the connecting pipe 43 can be an integral piece, so that the structure is more compact.

In one embodiment of the present application, referring to FIG. 3, crimp tube 44 further includes a first tube 441 and a second tube 442. The top and bottom ends of the first tube 441 are open, the bottom end of the connecting tube 43 can be restorably deformed to stretch the open top end of the pressing tube 44 to be inserted into the first tube 441, and the bottom end of the first tube 441 can be abutted against the top end of the second piston 30 to drive the second piston 30 to slide. Exemplarily, the first tube 441 may be made of a material having a certain deformation capability, such as plastic, and after the inner wall of the first tube 441 is sleeved with the connection tube 43, the inner wall of the first tube 441 having elasticity can be tightly attached to the outer wall of the connection tube 43, so as to ensure the connection tightness and enable the fluid to smoothly flow out along the outflow channel 40a without leakage.

The top end of the second tube 442 is open and the bottom end is closed, the second tube 442 is slidably disposed on the second piston 30 in a sealing manner, the outflow port 40b is formed on the peripheral side surface of the second tube 442, the top end of the second tube 442 can be restorably deformed to open the bottom end of the first tube 441 to be inserted into the first tube 441, the bottom end of the second tube 442 is provided with a limiting portion 41, the limiting portion 41 is located on one side of the second piston 30 away from the first tube 441, and the limiting portion 41 can be abutted against the second piston 30. The inner wall of the first tube 441 with elasticity can be tightly attached to the outer wall of the second tube 442, so that the connection tightness is ensured, and the fluid can smoothly flow out along with the outflow channel 40a without leakage.

In an embodiment of the present application, referring to fig. 4, one of an inner circumferential side surface of the first tube 441 and an outer circumferential side surface of the second tube 442 is formed with a first protrusion 4411, and the other of the inner circumferential side surface of the first tube 441 and the outer circumferential side surface of the second tube 442 is formed with a first groove 442a, and the first protrusion 4411 is caught in the first groove 442 a. By providing the first protrusion 4411 and the first groove 442a, the relative positions of the first and

second bodies

441 and 442 can be fixed, and the reliability of connection can be ensured.

In an embodiment of the present application, referring to fig. 4, one of the outer circumferential side surface of the connection pipe 43 and the inner circumferential side surface of the first pipe body 441 is formed with a second protrusion 431, the other of the outer circumferential side surface of the connection pipe 43 and the inner circumferential side surface of the first pipe body 441 is formed with a second groove 441a, and the second protrusion 431 is caught in the second groove 441 a. By providing the second protrusion 4411 and the second groove 442a, the relative position of the first pipe body 441 and the connection pipe 43 can be fixed, and the reliability of connection can be ensured.

In an embodiment of the present application, referring to fig. 1 and 3, the pressing head 42 has a disk shape, a top surface of the pressing head 42 is recessed to form a flow containing area 42a, and the flow containing area 42a is formed with a flow taking port 42a' communicating with the outflow channel 40a. On one hand, the pressing head 42 is designed to be disc-shaped, which not only provides an attractive appearance for the container, but also facilitates the user to take in the fluid, for example, a cosmetic cotton is usually used when the user takes in the cosmetic, the user holds the cosmetic cotton to press in the flow containing area 42a, the fluid flows out of the cosmetic cotton, and the operation is convenient. On the other hand, the containing area 42a with the concave surface can lead the fluid flowing out from the fluid taking port 42a' to be gathered to the center of the concave, thereby improving the utilization rate of the fluid taken by a user and reducing the waste of the fluid.

In an embodiment of the present application, referring to fig. 3, the top end of the pressure tube 44 is formed with an annular flange 443 located inside the housing 10, and in a top plan view of the container, a projection of the through hole 13 is located inside a projection of the annular flange 443, and the annular flange 443 can abut against an inner top surface of the housing 10. The annular flange 443 is provided to play a role of a stopper, and the annular flange 443 can abut against the inner top surface of the housing 10 so that the pressing member 40 can slide according to a fixed stroke without sliding out of the housing 10.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and all the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A container, comprising:

a housing (10);

a first piston (20) hermetically and slidably arranged in the housing (10), wherein the first piston (20) and the housing (10) are matched together to form a first cavity (20 a), and the first piston (20) is provided with a through-flow port (20 b) and a vent port (20 c) which are both communicated with the first cavity (20 a);

a second piston (30) sealingly slidably disposed within the first piston (20), the second piston (30) and the first piston (20) cooperating to form a second chamber (30 a), the vent (20 c) being closable or openable by the second piston (30) in a sliding direction of the second piston (30) to isolate or communicate the first chamber (20 a) from atmosphere;

a pressing member (40) sealingly slidably disposed through the second piston (30), the pressing member (40) having an outlet passage (40 a) and an outlet (40 b) communicating with the outlet passage (40 a), the outlet (40 b) being closable or openable by the second piston (30) in a sliding direction of the pressing member (40).

2. The container according to claim 1, wherein during the sliding of the pressing member (40) from the top side to the bottom side of the container, the first piston (20) and the second piston (30) are driven to slide synchronously to isolate the first cavity (20 a) from the vent (20 b), and then the pressing member (40) is driven to open the vent (40 b), and the second piston (30) is driven to slide to open the vent (20 c).

3. The container according to claim 2, characterized in that the frictional resistance between the first piston (20) and the second piston (30) is greater than the frictional resistance between the second piston (30) and the pressing piece (40), and the frictional resistance between the second piston (30) and the pressing piece (40) is greater than the frictional resistance between the first piston (20) and the housing (10).

4. The container according to claim 2, wherein the second piston (30) slides a preset distance to open the vent (20 c).

5. The container according to claim 1, characterized in that it comprises an elastic return (50), said elastic return (50) providing a force that drives the return of said pressing element (40), said first piston (20) and said second piston (30).

6. The container according to claim 5, wherein a limiting portion (41) is formed at a bottom end of the pressing member (40), the limiting portion (41) and the elastic restoring member (50) are located in the second cavity (30 a), and two ends of the elastic restoring member (50) are respectively connected with the housing (10) and the limiting portion (41), so that the limiting portion (41) abuts against the second piston (30) after the pressing member (40) slides for a restoring distance.

7. The container according to any one of claims 1 to 6, wherein the vent (20 c) is formed on a peripheral side surface of the first piston (20); and/or the through-flow opening (20 b) is formed at the bottom of the first piston (20).

8. The container according to any one of claims 1 to 6, wherein the second piston (30) is formed with a third cavity (30 b) and an inlet port (30 c) communicating with the third cavity (30 b), the outlet port (40 b) being capable of communicating with or being isolated from the third cavity (30 b) in a sliding direction of the pressing member (40); the inlet port (30 c) can communicate with or be isolated from the second chamber (30 a) in the sliding direction of the second piston (30).

9. The container according to any one of claims 1 to 6, wherein the housing (10) is formed with a housing chamber (10 a) housing the first piston (20), the housing chamber (10 a) being in communication with the atmosphere;

the first piston (20) comprises an accommodating body (21) with an open top end and an annular sealing part (22) arranged around the outer periphery of the accommodating body (21), and the annular sealing part (22) is in sealing abutment with the inner peripheral side surface of the shell (10) so as to form the first cavity (20 a) in a matching way;

the second piston (30) is arranged on the inner peripheral side surface of the accommodating body (21) in a sliding mode in a sealing mode to form a second cavity (30 a) in a matching mode.

10. The container according to claim 9, wherein the receiving body (21) includes a first cylindrical portion (211) opened at a top end, a second cylindrical portion (212) located at a bottom side of the first cylindrical portion (211), and a tapered portion (213) connecting the first cylindrical portion (211) and the second cylindrical portion (212), an inner diameter of the first cylindrical portion (211) is larger than an inner diameter of the second cylindrical portion (212), the second piston (30) is sealingly slidably disposed in the first cylindrical portion (211), and the second piston (30) cooperates with the first cylindrical portion (211), the second cylindrical portion (212), and the tapered portion (213) to form the second cavity (30 a), the vent hole (20 c) is formed on a peripheral side surface of the first cylindrical portion (211), and a bottom end of the second cylindrical portion (212) is opened to form the vent hole (20 b).

11. The container according to claim 10, wherein the second piston (30) comprises a closing body (31) covering the top end opening of the first cylindrical portion (211) and a sleeve (32) sealingly penetrating the closing body (31), the circumferential side surface of the closing body (31) is in sealing abutment with the inner circumferential side surface of the first cylindrical portion (211), a third cavity (30 b) is formed in the sleeve (32), the bottom end of the third cavity (30 b) is open to form a flow inlet (30 c), one end of the pressing member (40) is sealingly slidably penetrating the sleeve (32), and the flow outlet (40 b) can be closed or opened by the sleeve (32).

12. The container according to claim 11, wherein the closing body (31) comprises a covering body (311), an annular flange (313) and an annular plate (312) connecting the covering body (311) and the annular flange (313), the outer circumferential surface of the sleeve (32) is formed with a step (322), the covering body (311) is hermetically sleeved outside the sleeve (32), and the bottom of the covering body (311) abuts against the top surface of the step (322).

13. The container according to claim 9, wherein the housing (10) comprises a housing body (11) with an open top end and a housing cover (12) covering the open top end of the housing body (11), and the housing body (11) and the housing cover (12) jointly enclose the accommodating cavity (10 a).

14. The container according to any one of claims 1 to 5, wherein a through hole (13) is formed at the top of the housing (10), the pressing member (40) includes a pressing head (42) located outside the housing (10), a connecting tube (43) inserted into the through hole (13), and a pressing tube (44) located inside the housing (10), the pressing tube (44) is sealingly slidably inserted into the second piston (30), the pressing tube (44) has an open top end and a closed bottom end, the connecting tube (43) has a top end connected to the pressing head (42), the connecting tube (43) has a bottom end connected to the pressing tube (44), spaces inside the pressing tube (44) and the connecting tube (43) together constitute the outflow passage (40 a), the outflow port (40 b) is formed at a circumferential side surface of the pressing tube (44), and the pressing tube (44) can be abutted against the second piston (30) to drive the second piston (30) to slide.

15. The container according to claim 14, wherein the pressure tube (44) comprises:

the bottom end of the connecting pipe (43) can be restorably deformed to prop open the top end of the pressing pipe (44) to be inserted into the first pipe body (441), and the bottom end of the first pipe body (441) can be abutted against the top end of the second piston (30) to drive the second piston (30) to slide;

a second tube (442) with an open top end and a closed bottom end, the second tube (442) is slidably disposed on the second piston (30) in a sealing manner, the outflow port (40 b) is formed on a peripheral side surface of the second tube (442), the top end of the second tube (442) can be elastically deformed to open the open bottom end of the first tube (441) to be inserted into the first tube (441), a limiting portion (41) is formed at the bottom end of the second tube (442), the limiting portion (41) is located on a side of the second piston (30) away from the first tube (441), and the limiting portion (41) can abut against the second piston (30).

16. The container according to claim 15, wherein one of an inner peripheral side surface of the first tube (441) and an outer peripheral side surface of the second tube (442) is formed with a first projection (4411), and the other of the inner peripheral side surface of the first tube (441) and the outer peripheral side surface of the second tube (442) is formed with a first groove (442 a), and the first projection (4411) is snapped into the first groove (442 a).

17. The container according to claim 15, wherein one of an outer circumferential side surface of the connection pipe (43) and an inner circumferential side surface of the first tube body (441) is formed with a second protrusion (431), and the other of the outer circumferential side surface of the connection pipe (43) and the inner circumferential side surface of the first tube body (441) is formed with a second groove (441 a), and the second protrusion (431) is caught in the second groove (441 a).

18. The container according to claim 14, wherein the pressing head (42) has a disk shape, a top surface of the pressing head (42) is recessed to form a flow containing area (42 a), and the flow containing area (42 a) is formed with a take-out port (42 a') communicating with the outflow passage (40 a).

19. A container according to claim 14, characterized in that the top end of the pressure tube (44) is formed with an annular flange (443) located inside the housing (10), the projection of the through hole (13) being located inside the projection of the annular flange (443) in a top view projection of the container, the annular flange (443) being able to abut the inner top surface of the housing (10).