A container

Abstract

The present application provides a container, which includes a shell, a first piston, a second piston and a pressing piece. The first piston is sealingly slidably disposed in the shell, the first piston and the shell cooperate to form a first cavity, and the first piston is formed with a flow port and an air vent both of which can be connected to the first cavity; the second piston is sealingly slidably disposed in the first piston, the second piston and the first piston cooperate to form a second cavity, and in the sliding direction of the second piston, the air vent can be closed or opened by the second piston to isolate or connect the first cavity with the atmosphere; the pressing piece is sealingly slidably penetrated on the second piston, the pressing piece is formed with an outflow channel and an outflow port connected to the outflow channel, and in the sliding direction of the pressing piece, the outflow port can be closed or opened by the second piston. The fluid in the container can be taken out by pressing operation, and the operation is simple.

Description

Technical Field

[0001] The present application relates to a device for storing and dispensing fluid, and in particular to a container. Background Art

[0002] Fluid cosmetics are usually stored in bottles. Both open pouring bottles and dropper bottles are inconvenient to use. For example, the open pouring bottle needs to be turned over to pour out the cosmetics, which is inconvenient for users. Summary of the invention

[0003] In view of this, an embodiment of the present application provides a container that at least solves the above-mentioned problems.

[0004] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0005] The present application provides a container, comprising:

[0006] case;

[0007] a first piston sealingly and slidably disposed in the housing, the first piston and the housing cooperate to form a first cavity, the first piston is formed with a flow port and a vent both capable of communicating with the first cavity;

[0008] a second piston sealingly and slidably disposed in the first piston, the second piston and the first piston cooperate to form a second cavity, and in the sliding direction of the second piston, the vent can be closed or opened by the second piston to isolate or connect the first cavity with the atmosphere;

[0009] A pressing piece is sealingly slidably disposed on the second piston, wherein the pressing piece is formed with an outflow channel and an outlet communicated with the outflow channel, and the outlet can be closed or opened by the second piston in the sliding direction of the pressing piece.

[0010] In some embodiments, when the pressing member slides from the top side to the bottom side of the container, the first piston and the second piston are first driven to slide synchronously to isolate the first cavity from the flow port, and then the pressing member is driven to open the outlet, and then the second piston is driven to slide to open the vent.

[0011] In some embodiments, the friction resistance between the first piston and the second piston is greater than the friction resistance between the second piston and the pressing member, and the friction resistance between the second piston and the pressing member is greater than the friction resistance between the first piston and the housing.

[0012] In some embodiments, the second piston slides a preset distance to open the vent.

[0013] In some embodiments, the container includes an elastic return member, which provides a force to drive the pressing member, the first piston, and the second piston to return to their original position.

[0014] In some embodiments, a limiting portion is formed at the bottom end of the pressing member, and the limiting portion and the elastic return member are located in the second cavity. Both ends of the elastic return member are respectively connected to the shell and the limiting portion, so that the limiting portion abuts against the second piston after the pressing member slides a return distance.

[0015] In some embodiments, the vent is formed on a peripheral side of the first piston; and / or the flow port is formed at a bottom of the first piston.

[0016] In some embodiments, the second piston forms a third cavity and an inlet connected to the third cavity, and in the sliding direction of the pressing member, the outlet can be connected to or isolated from the third cavity; in the sliding direction of the second piston, the inlet can be connected to or isolated from the second cavity.

[0017] In some embodiments, the housing is formed with a receiving chamber for receiving the first piston, and the receiving chamber is communicated with the atmosphere;

[0018] The first piston comprises a receiving body with an open top and an annular sealing portion arranged around the outer periphery of the receiving body, wherein the annular sealing portion is in sealing contact with the inner peripheral side surface of the housing to cooperate to form the first cavity;

[0019] The second piston is sealingly and slidably disposed on the inner peripheral side surface of the accommodating body to cooperate to form the second cavity.

[0020] In some embodiments, the containing body includes a first cylindrical portion with an open top, a second cylindrical portion located at the bottom side of the first cylindrical portion, and a tapered portion connecting the first cylindrical portion and the second cylindrical portion, the inner diameter of the first cylindrical portion is larger than the inner diameter of the second cylindrical portion, the second piston is sealingly slidably 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 the peripheral side surface of the first cylindrical portion, and the bottom end of the second cylindrical portion is open to form the flow port.

[0021] In some embodiments, the second piston includes a closing body covering the top end opening of the first cylindrical portion and a sleeve sealingly inserted through the closing body, the circumferential side surface of the closing body is sealingly abutted against the inner circumferential side surface of the first cylindrical portion, a third cavity is formed in the sleeve, the bottom end of the third cavity is open to form an inlet, one end of the pressing member is sealingly slidably inserted through the sleeve, and the outlet can be closed or opened by the sleeve.

[0022] In some embodiments, the closing body includes a sleeve, an annular flange, and an annular plate connecting the sleeve and the annular flange, a step portion is formed on the outer circumferential surface of the sleeve, the sleeve is sealingly mounted outside the sleeve, and the bottom of the sleeve abuts against the top surface of the step portion.

[0023] In some embodiments, the shell includes a shell body with an open top and a shell cover covering the open top of the shell body, and the shell body and the shell cover are jointly arranged to form the accommodating cavity.

[0024] In some embodiments, a through hole is formed at the top of the shell, and the pressing member includes a pressing head located outside the shell, a connecting tube inserted in the through hole, and a pressing tube located in the shell, the pressing tube is sealingly and slidably inserted on the second piston, the top end of the pressing tube is open and the bottom end is closed, the top end of the connecting tube is connected to the pressing head, and the bottom end of the connecting tube is connected to the pressing tube, the pressing tube and the space inside the connecting tube together constitute the outlet channel, the outlet is formed on the peripheral side of the pressing tube, and the pressing tube can abut against the second piston to drive the second piston to slide.

[0025] In some embodiments, the press tube comprises:

[0026] A first tube body with both ends open, wherein the bottom end of the connecting tube can restore its deformation to open the top opening of the pressing tube to be inserted into the first tube body, and the bottom end of the first tube body can abut against the top of the second piston to drive the second piston to slide;

[0027] A second tube body with an open top and a closed bottom, the second tube body is sealingly slidably arranged on the second piston, the outlet is formed on the peripheral side of the second tube body, the top of the second tube body can restore the deformation to open the bottom open part of the first tube body to be inserted into the first tube body, and a limiting portion is formed at the bottom end of the second tube body, the limiting portion is located on the side of the second piston away from the first tube body, and the limiting portion can abut against the second piston.

[0028] In some embodiments, one of the inner circumferential side of the first tube body and the outer circumferential side of the second tube body is formed with a first protrusion, and the other of the inner circumferential side of the first tube body and the outer circumferential side of the second tube body is formed with a first groove, and the first protrusion is inserted into the first groove.

[0029] In some embodiments, a second protrusion is formed on one of the outer peripheral side surface of the connecting tube and the inner peripheral side surface of the first tube body, and a second groove is formed on the other of the outer peripheral side surface of the connecting tube and the inner peripheral side surface of the first tube body, and the second protrusion is inserted into the second groove.

[0030] In some embodiments, the pressing head is disc-shaped, and the top surface of the pressing head is recessed to form a flow-containing area, and the flow-containing area is formed with a flow intake port connected to the outflow channel.

[0031] In some embodiments, the top end of the pressing tube is formed with an annular flange located inside the shell, and in a top projection of the container, the projection of the through hole is located inside the projection of the annular flange, and the annular flange can abut against the inner top surface of the shell.

[0032] The container provided by the present application, when the pressing member is in the initial position, the second piston closes the vent and the outlet, that is, the first cavity and the second cavity are both in a sealed state, so that the fluid in the first cavity and the second cavity is isolated from the atmosphere, thereby ensuring that the fluid in the container is not contaminated to a certain extent. When the fluid needs to be taken, the pressing member is pressed, the volume of the first cavity and the volume of the second cavity are reduced, the fluid in the first cavity enters the second cavity through the flow port, the fluid in the second cavity enters the outflow channel through the outlet, and then flows out of the outflow channel to the outside of the container. On the one hand, the structure is simple and reliable, by pressing the pressing member, the fluid in the first cavity and the second cavity can be squeezed out of the outflow channel, the user only needs to press the operation to take the fluid in the container, the operation is simple, and the user's operation efficiency of taking the fluid is effectively improved. On the other hand, since the first cavity and the second cavity are both in a sealed state when the pressing member is in the initial position, a large pressing force is required to drive the pressing member to slide to the bottom side, so that the fluid can be prevented from flowing out of the container when the user accidentally touches the pressing member, and the operation reliability is high. On the other hand, the fluid is squeezed out by reducing the volume of the first cavity and the volume of the second cavity. This controls the amount of fluid taken in to a certain extent, avoids squeezing out too much fluid, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic structural diagram of a container according to an embodiment of the present application;

[0034] Figure 2 for Figure 1 An exploded view of the structure shown;

[0035] Figure 3 for Figure 1 a cross-sectional view of the structure shown;

[0036] Figure 4 for Figure 3 A partial enlarged view of the embodiment of the present invention schematically shows the matching structure of the pressing member, the first piston and the second piston;

[0037] Figure 5 A cross-sectional view of a container according to another embodiment of the present application;

[0038] Figure 6 for Figure 5 The structure shown is a schematic diagram of the structure in the first pressing state, which schematically shows the state of the flow opening being sealed;

[0039] Figure 7 for Figure 5 A schematic diagram of the structure shown in the second pressing state, in which the state in which the outlet is opened is schematically shown;

[0040] Figure 8 for Figure 5 A schematic diagram of the structure shown in the third pressing state, in which the vent is schematically shown to be opened;

[0041] Fig. 9 for Figure 5 A schematic diagram of the structure shown in the first reset state, in which the state in which the flow opening is opened is schematically shown;

[0042] Fig.10 for Figure 5 A schematic diagram of the structure in the second reset state, schematically showing a state where the outlet is closed; and

[0043] Fig.11 This is a cross-sectional view of a container according to another embodiment of the present application.

[0044] Description of reference numerals:

[0045] Shell 10; accommodating chamber 10a; shell body 11; shell cover 12; through hole 13; first piston 20; first cavity 20a; flow port 20b; vent 20c; accommodating body 21; annular sealing portion 22; second piston 30; second cavity 30a; third cavity 30b; inlet 30c; closing body 31; sleeve 32; pressing member 40; outlet channel 40a; outlet 40b; limiter 41; pressing head 42 ... Flow area 42a; flow outlet 42a'; connecting pipe 43; pressing pipe 44; elastic return member 50; first cylindrical portion 211; second cylindrical portion 212; conical portion 213; sleeve 311; annular plate 312; annular flange 313; step portion 322; second protrusion 431; first tube body 441; second groove 441a; second tube body 442; first groove 442a; annular flange 443; first protrusion 4411. DETAILED DESCRIPTION

[0046] It should be noted that the various embodiments / implementations provided in this application can be combined with each other without causing any contradiction. The detailed description in the specific implementation mode should be understood as an explanation of the purpose of this application and should not be regarded as an improper limitation on this application.

[0047] In the description of this application, the terms "top" and "bottom" are used as the orientation or position relationship based on the attached Figure 5 The orientation or position relationship shown. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. The term "first / second" is only used to distinguish different objects, and does not mean that there is any similarity or connection between the two.

[0048] The present application embodiment provides a container, see Figure 1 , Figure 2 and Figure 5 As shown, the container includes a housing 10 , a first piston 20 , a second piston 30 and a pressing member 40 .

[0049] The first piston 20 is sealingly slidably disposed in the housing 10. The first piston 20 and the housing 10 cooperate to form a first cavity 20a. The first piston 20 is formed with a flow port 20b and a vent 20c both of which can communicate with the first cavity 20a. In other words, the first piston 20 and the housing 10 are dynamically sealed, and the first piston 20 slides sealingly along the housing 10 to change the volume of the first cavity 20a.

[0050] The second piston 30 is sealingly slidably disposed in the first piston 20. The second piston 30 and the first piston 20 cooperate to form a second cavity 30a. In the sliding direction of the second piston 30, the vent 20c can be closed or opened by the second piston 30 to isolate or connect the first cavity 20a with the atmosphere. The flow port 20b connects the first cavity 20a and the second cavity 30a. The first piston 20 and the second piston 30 are dynamically sealed. The second piston 30 slides sealingly along the first piston 20 to change the volume of the second cavity 30a, and can open or close the vent 20c.

[0051] When the second piston 30 closes the vent 20c, the first cavity 20a is isolated from the atmosphere, that is, the first cavity 20a is in a sealed state, so that the first piston 20 can slide along the housing 10 in a sealed manner, reducing the volume of the first cavity 20a, and the fluid in the first cavity 20a enters the second cavity 30a through the flow port 20b. When the second piston 30 opens the vent 20c, the first cavity 20a is connected to the atmosphere, which can improve the reliability of the first piston 20 during operation, reduce the probability of the pressing member 40 being stuck due to the inability of air to enter and exit smoothly, and facilitate air to enter the first cavity 20a and the second cavity 30a through the vent 20c after taking out the fluid, so that the first piston 20 and the second piston 30 can be smoothly reset to avoid being stuck due to the internal and external pressure difference.

[0052] The pressing member 40 is sealingly and slidably disposed on the second piston 30. The pressing member 40 is formed with an outflow channel 40a and an outflow port 40b connected to the outflow channel 40a. In the sliding direction of the pressing member 40, the outflow port 40b can be closed or opened by the second piston 30. The pressing member 40 can drive the first piston 20 and the second piston 30 to slide. There is a dynamic seal between the pressing member 40 and the second piston 30. The pressing member 40 slides sealingly along the second piston 30, and the outflow port 40b can be opened or closed. When the outflow port 40b is opened, the outflow port 40b connects the second cavity 30a and the outflow channel 40a, so that the fluid in the second cavity 30a enters the outflow channel 40a through the outflow port 40b, and then flows out of the container through the outflow channel 40a.

[0053] 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 closes the vent 20c and the outlet 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 second cavity 30a are isolated from the atmosphere, thereby ensuring that the fluid in the container is not contaminated to a certain extent. When it is necessary to take the fluid, the pressing member 40 is pressed, and the volume of the first cavity 20a and the volume of the second cavity 30a are both reduced, and the fluid in the first cavity 20a enters the second cavity 30a through the outlet 20b, and the fluid in the second cavity 30a enters the outlet channel 40a through the outlet 40b, and then flows out of the container from the outlet channel 40a.

[0054] On the one hand, the structure of the container is simple and reliable. By pressing the pressing piece 40, the fluid in the first cavity 20a and the second cavity 30a can be squeezed out from the outflow channel 40a. The user only needs to press to take the fluid in the container. The operation is simple and effectively improves the user's operating efficiency in taking the fluid.

[0055] On the other hand, since the first cavity 20a and the second cavity 30a are both in a sealed state when the pressing member 40 is in the initial position, a larger pressing force is required to drive the pressing member 40 to slide toward the bottom side. This can prevent the fluid from flowing out of the container when the user accidentally touches the pressing member 40, and the operation reliability is high.

[0056] On the other hand, the fluid is squeezed out by reducing the volume of the first cavity 20a and the volume of the second cavity 30a. This controls the amount of fluid taken in to a certain extent, avoids squeezing out too much fluid, and improves the user experience.

[0057] The scope of use of the container of the embodiment of the present application is not limited. The container can be used to store and distribute fluids. The specific material of the fluid is not limited. For example, in one embodiment, the container can be used to store and distribute fluid cosmetics, such as liquid or powdered cosmetics, etc.

[0058] The material of the first piston 20 and the second piston 30 is not limited. For example, in one embodiment, the first piston 20 and the second piston 30 are both made of flexible materials, such as rubber.

[0059] The specific position of the flow port 20b is not limited. For example, in one embodiment, the flow port 20b is formed at the bottom of the first piston 20. In this way, when the bottom of the first piston 20 abuts against the housing 10, the housing 10 can close the flow port 20b to isolate the first cavity 20a and the flow port 20b.

[0060] The shape of the flow opening 20b is not limited. For example, the shape of the flow opening 20b includes but is not limited to a circle.

[0061] The specific position of the vent 20c is not limited. For example, in one embodiment, the vent 20c is formed on the peripheral side of the first piston 20. In this way, the second piston 30 is in sealing and sliding contact with the peripheral side of the first piston 20, and the second piston 30 can close or open the vent 20c on the sliding path of the second piston 30.

[0062] The number of the vents 20 c is not limited. For example, in one embodiment, there is one vent 20 c. In another embodiment, there are multiple vents 20 c, which are spaced apart along the circumference of the first piston 20 .

[0063] It should be noted that the “multiple” in the embodiments of the present application refers to a number of two or more.

[0064] The shape of the vent 20c is not limited. For example, the shape of the vent 20c includes but is not limited to a circle.

[0065] In one embodiment of the present application, see Figure 5 As shown, during the sliding process 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 first driven to slide synchronously to isolate the first cavity 20a from the flow port 20b, and then the pressing member 40 is driven to open the flow port 40b, and then the second piston 30 is driven to slide to open the vent 20c.

[0066] When you need to access fluid, the first step is to refer to Figure 6 As shown, the pressing member 40 slides from the initial position toward the bottom side of the container, and the pressing member 40 first drives the first piston 20 and the second piston 30 to slide synchronously toward the bottom side relative to the shell 10. There is no relative sliding between the first piston 20 and the second piston 30, and there is no relative sliding between the second piston 30 and the pressing member 40. The second piston 30 can keep the vent 20c and the outlet 40b closed, and 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 flow port 20b, until the first piston 20 abuts against the shell 10, the first piston 20 stops sliding, and the flow port 20b is closed by the shell 10, thereby isolating the first cavity 20a and the flow port 20b, so as to prevent the fluid in the first cavity 20a from continuing to flow into the second cavity 30a.

[0067] Step 2, see Figure 7 As shown, the first piston 20 and the second piston 30 remain relatively still, and the pressing member 40 slides toward the bottom side relative to the second piston 30 to open the outlet 40b.

[0068] Step 3, see Figure 8As shown, the pressing member 40 and the second piston 30 slide synchronously toward the bottom relative to the first piston 20, the volume of the second cavity 30a decreases, the fluid enters the outlet channel 40a from the outlet port 40b, and flows out of the container from the outlet channel 40a; the vent 20c is opened synchronously, the first cavity 20a is connected to the atmosphere, and the air pressure in the first cavity 20a is ensured to be balanced with the external air pressure.

[0069] When the fluid is taken out, the pressing member 40 slides from the bottom side to the top side of the container. Fig. 9 As shown, the pressing member 40, the first piston 20 and the second piston 30 slide toward the top side relative to the housing 10, the flow port 20b is opened, and the gas from the vent 20c enters the first cavity 20a and the second cavity 30a, so that the first piston 20 and the second piston 30 are easily reset.

[0070] Step 2, see Fig.10 As shown, the pressing member 40 slides toward the top side relative to the second piston 30, and the outlet 40b is closed, thereby preventing the fluid in the outlet channel 40a from flowing back.

[0071] Step 3, see Figure 5 As shown, the pressing member 40 and the second piston 30 slide synchronously toward the top side relative to the first piston 20, the vent 20c is closed, and the pressing member 40 returns to the initial position.

[0072] In one embodiment of the present application, see Figure 5 As shown, the second piston 30 slides a preset distance to open the vent 20c. The amount of fluid taken is set by setting the preset distance of the second piston 30. The second piston 30 slides a preset distance relative to the first piston 20, the vent 20c is opened, and the second piston 30 stops sliding, so that the same amount of fluid flows out each time the pressing member 40 is pressed.

[0073] In one embodiment of the present application, see Figure 5 As shown, the friction resistance between the first piston 20 and the second piston 30 is greater than the friction resistance between the second piston 30 and the pressing member 40, and the friction resistance between the second piston 30 and the pressing member 40 is greater than the friction resistance between the first piston 20 and the housing 10. By setting different sliding friction resistances on the first piston 20, the second piston 30 and the pressing member 40, it can be ensured that each component in the container moves in a preset manner, and the fluid can be smoothly extruded. At the same time, the components are driven by friction, and there is no need to design other driving structures between the various structures, and the driving method is simple.

[0074] The source of the force driving the pressing member 40, the first piston 20 and the second piston 30 to reset is not limited. In one embodiment of the present application, the user pulls the pressing member 40 toward the top side to reset the pressing member 40, the first piston 20 and the second piston 30. Figure 4 As shown, the container includes an elastic reset member 50, which provides a force to drive the pressing member 40, the first piston 20 and the second piston 30 to reset. The reset force provided by the elastic reset member 50 can automatically return the pressing member 40, the first piston 20 and the second piston 30 to their initial positions before being pressed. By providing the elastic reset member 50, the user does not need to manually apply the reset force, the operation is more humane, and the user experience is improved.

[0075] The specific structure of the elastic reset member 50 is not limited. For example, the elastic reset member 50 includes but is not limited to a spring, an elastic bellows or a rubber ball head.

[0076] In one embodiment of the present application, see Fig.11 As shown, the bottom end of the pressing member 40 forms a limiting portion 41, the limiting portion 41 and the elastic reset member 50 are located in the second cavity 30a, and the two ends of the elastic reset member 50 are respectively connected to the housing 10 and the limiting portion 41, so that after the pressing member 40 slides a reset distance, the limiting portion 41 abuts against the second piston 30. When the pressing member 40 slides toward the top side to reset, the limiting portion 41 abuts against the second piston 30 to drive the second piston 30 and the first piston 20 to reset.

[0077] The limiting portion 41 may also be provided with a structure for facilitating the installation of the elastic reset member 50. For example, in the embodiment of the present application, the elastic reset member 50 is sleeved on the convex shaft at the bottom of the limiting portion 41. In this way, the convex shaft is conducive to the elastic reset guide of the elastic reset member 50.

[0078] The specific structure and shape of the limiting portion 41 are not limited. For example, in one embodiment, the limiting portion 41 is an annular boss. In another embodiment, the limiting portion 41 is a retaining spring structure.

[0079] In one embodiment of the present application, see Figure 3 and Figure 4As shown, the second piston 30 is formed with a third cavity 30b and an inlet 30c connected to the third cavity 30b. In the sliding direction of the pressing member 40, the outlet 40b can be connected to or isolated from the third cavity 30b; in the sliding direction of the second piston 30, the inlet 30c can be connected to or isolated from the second cavity 30a. Specifically, during the sliding process 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 connected to the third cavity 30b, and the fluid in the third cavity 30b can enter the outlet channel 40a through the outlet 40b. During the sliding process of the second piston 30 toward the bottom side of the container, the inlet 30c is isolated from the second cavity 30a, that is, the inlet 30c is closed, thereby preventing more fluid in the second cavity 30a from entering the third cavity 30b, and a limited amount of fluid in the third cavity 30b can flow out of the container. In this way, each time the pressing member 40 is pressed until the inlet 30c is closed, the fluid will no longer flow out, which makes it easier to limit the amount of fluid to be taken and improves the user experience. After the fluid is taken, when the pressing member 40 slides toward the top side of the container, the outlet 40b is closed by the second piston 30, and the outlet 40b is isolated from the third cavity 30b; when the second piston 30 slides toward the top side of the container, the inlet 30c is opened, and the inlet 30c is connected to the second cavity 30a.

[0080] The specific method of isolating the inlet 30c is not limited. For example, in one embodiment, when the second piston 30 slides toward the bottom of the container, the second piston 30 abuts against the housing 10, so that the housing 10 closes the inlet 30c.

[0081] The specific location of the inlet 30c is not limited. For example, in one embodiment, the inlet 30c is formed at the bottom of the second piston 30. After the second cavity 30a is squeezed, the fluid will be pressed into the third cavity 30a from the inlet 30c. A third cavity 30b that can communicate with the second cavity 30a is further provided in the second piston 30, which can guide the flow channel for the fluid to flow out so as to fully squeeze out all the fluid in the container. In this way, it is conducive to guiding the fluid to flow into the third cavity 30b from the bottom of the shell 10, which can reduce the residual fluid on the inner wall of the container and improve the use efficiency of the fluid in the container.

[0082] In one embodiment of the present application, see Figure 3 As shown, the housing 10 is formed with a housing chamber 10a for accommodating the first piston 20, and the housing chamber 10a is connected to the atmosphere. The housing chamber 10a is connected to the atmosphere so that after the pressing member 40 is reset, the internal and external air pressures of the first cavity 20a remain balanced. Optionally, a conical slope that converges toward the bottom center may be provided at the bottom of the inner wall of the housing 10. When the first piston 20 is squeezed, the fluid in the first cavity 20a may flow into the bottom center of the housing 10 along the conical slope, which can reduce the residual fluid on the inner wall of the container and improve the use efficiency of the fluid in the container.

[0083] The first piston 20 includes a container 21 with an open top and an annular sealing portion 22 arranged around the outer periphery of the container 21. The annular sealing portion 22 is sealed against the inner peripheral side of the housing 10 to form a first cavity 20a. The second piston 30 is sealingly slidably arranged on the inner peripheral side of the container 21 to form a second cavity 30a. The container 21 is used to accommodate the second piston 30, and the annular sealing portion 22 arranged around the outer periphery of the container 21 is used to seal between the first piston 20 and the housing 10. In this way, the container structure is simple and the cost is low.

[0084] In some embodiments, the first piston 20 may be an integrally formed structure, so that the first piston 20 has a compact and reliable structure.

[0085] In one embodiment of the present application, see Figure 3 As shown, the containing body 21 also includes a first cylindrical portion 211 with an open top, a second cylindrical portion 212 located at the 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. The inner diameter of the first cylindrical portion 211 is greater than the inner diameter of the second cylindrical portion 212. The second piston 30 is sealingly slidably arranged 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 the peripheral side surface of the first cylindrical portion 211, and the bottom end of the second cylindrical portion 212 is open to form a flow port 20b. By providing the first cylindrical portion 211, the second cylindrical portion 212 and the conical portion 213, the container 21 forms a funnel-shaped structure. The container 21 with the funnel-shaped structure has a flow-guiding effect. The fluid in the second cavity 30a can flow to the flow port 20b in a concentrated manner as the volume of the second cavity 30a decreases. This structure can fully squeeze out the fluid in the container, reduce the residual fluid on the inner wall of the container, and improve the use efficiency of the fluid in the container.

[0086] In one embodiment of the present application, see Figure 3 and Figure 4 As shown, 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 inserted into the closing body 31. The circumferential side surface of the closing body 31 is sealingly abutted against the inner circumferential side surface of the first cylindrical portion 211. A third cavity 30b is formed in the sleeve 32. The bottom end of the third cavity 30b is open to form an inlet 30c. One end of the pressing member 40 is sealingly slidably inserted into the sleeve 32, and the outlet 40b can be closed or opened by the sleeve 32.

[0087] Since the fluid in the second cavity 30a needs to enter the third cavity 30b through the inlet 30c, and then flow out from the third cavity 30b through the outlet 40b. When the bottom of the sleeve 32 abuts against the shell 10, the inlet 30c is isolated from the second cavity 30a, so it is convenient to limit the amount of fluid taken, and to a certain extent avoid excessive fluid intake. In this way, when the pressing member 40 is pressed and the pressing member 40 drives the bottom of the sleeve 32 to abut against the shell 10, the pressing member 40 can no longer be pressed toward the bottom side of the container, so that quantitative intake and circulation are achieved. Exemplarily, the amount of fluid taken can be adjusted by adjusting the distance between the bottom of the sleeve 32 and the shell 10.

[0088] At the same time, in addition to adjusting the piston pressing stroke, the inner diameter of the piston can also be adjusted to achieve quantitative use. Since the inner diameter of the first piston 20 is larger than the inner diameter of the second piston 30, and the inner diameter of the second piston 30 is larger than the inner diameter of the sleeve 32, within a unit stroke, the flow rate of the extruded fluid of the first cavity 20a is larger, the flow rate of the extruded fluid of the second cavity 30a is second, and the flow rate of the extruded fluid of the third cavity 30b is the smallest. Compared with a container with only a single cavity, the flow rate of the fluid can also be adjusted by the inner diameter of the sleeve 32, that is, each time the fluid is extruded from the third cavity 30b in the sleeve 32 with the smallest inner diameter. Therefore, the container of the embodiment of the present application can also control the flow rate of the extruded fluid each time by controlling the inner diameter of the sleeve 32, which can effectively reduce the waste caused by the user squeezing out excessive fluid and improve the use efficiency of the fluid in the container.

[0089] In one embodiment of the present application, see Figure 3 and Figure 4 As shown, the closing body 31 includes a sleeve 311, an annular flange 313, and an annular plate 312 connecting the sleeve 311 and the annular flange 313. A step portion 322 is formed on the outer circumferential surface of the sleeve 32. The sleeve 311 is sealedly sleeved outside the sleeve 32, and the bottom of the sleeve 311 abuts against the top surface of the step portion 322. The step portion 322 has a limiting function, and the top surface of the step portion 322 abuts against the closing body 31, so that the closing body 31 and the sleeve 32 slide synchronously.

[0090] In one embodiment of the present application, see Figure 1 and Figure 3As shown, the housing 10 includes a shell body 11 with an open top and a shell cover 12 covering the open top of the shell body 11. The shell body 11 and the shell cover 12 are together arranged to form a receiving chamber 10a. Exemplarily, the shell body 11 and the shell cover 12 can be connected in a variety of ways, such as threading and clamping. In order to ensure that the internal piston of the receiving chamber 10a can slide smoothly, the shell body 11 and the shell cover 12 are not sealed, so that the gas outside the shell cover 12 can smoothly enter and exit the receiving chamber 10a. At the same time, during the resetting process, the first piston 20 may slide off the shell body 11 if the sliding distance to the top is too large. The shell cover 12 has a limiting effect on the sliding of the first piston 20, which can prevent the first piston 20 from sliding off the shell body 11.

[0091] In one embodiment of the present application, see Figure 1 and Figure 3 As shown, a through hole 13 is formed on the top of the shell 10. Exemplarily, in one embodiment, the through hole 13 is formed on the shell cover 12. The pressing member 40 includes a pressing head 42 located outside the shell 10, a connecting tube 43 passing through the through hole 13, and a pressing tube 44 located inside the shell 10. The pressing tube 44 is sealingly slidably passed through the second piston 30. The top end of the pressing tube 44 is open and the bottom end is closed. The top end of the connecting tube 43 is connected to the pressing head 42, and the bottom end of the connecting tube 43 is connected to the pressing tube 44. Specifically, a limiting portion 41 is formed at the bottom of the pressing tube 44. During assembly, the second piston 30 is sleeved from the top end of the pressing tube 44 to the limiting portion 41, and then the bottom end of the connecting tube 43 is connected to the pressing tube 44. The pressing member 40 is split into a connection structure having a connecting tube 43 and a pressing tube 44, which can facilitate the assembly of the second piston 30. The space inside the pressure tube 44 and the connecting tube 43 together constitutes the outflow channel 40a, and the outflow port 40b is formed on the peripheral side of the pressure tube 44. The pressure tube 44 can abut against the second piston 30 to drive the second piston 30 to slide. Since the outflow port 40b is formed on the peripheral side of the pressure tube 44, when not pressed, the outflow port 40b is closed by the second piston 30, which can prevent the outside air from polluting the fluid in the container.

[0092] The specific shape of the pressing head 42 is not limited. For example, in one embodiment, the pressing head 42 is in the shape of a flat plate or a boss. In this way, it is convenient for the user to press the pressing member 40 toward the bottom. The pressing head 42 and the connecting pipe 43 can be an integral part to make the structure more compact.

[0093] In one embodiment of the present application, see Figure 3As shown, the pressure tube 44 also includes a first tube body 441 and a second tube body 442. The top and bottom ends of the first tube body 441 are open, and the bottom end of the connecting tube 43 can restore the deformation to open the top opening of the pressure tube 44 to insert into the first tube body 441, and the bottom end of the first tube body 441 can abut against the top of the second piston 30 to drive the second piston 30 to slide. Exemplarily, the first tube body 441 can be made of a material with a certain deformation ability such as plastic. After the connecting tube 43 is sleeved into the inner wall of the first tube body 441, the inner wall of the elastic first tube body 441 can be close to the outer wall of the connecting tube 43, ensuring the sealing of the connection, and enabling the fluid to flow out smoothly along the outflow channel 40a without leakage.

[0094] The top of the second tube body 442 is open and the bottom is closed. The second tube body 442 is slidably and sealingly penetrated on the second piston 30. The outlet 40b is formed on the peripheral side of the second tube body 442. The top of the second tube body 442 can restore the deformation to open the bottom opening of the first tube body 441 to be inserted into the first tube body 441. The bottom of the second tube body 442 forms a limiting portion 41, which is located on the side of the second piston 30 away from the first tube body 441. The limiting portion 41 can abut against the second piston 30. The inner wall of the first tube body 441 with elasticity can be close to the outer wall of the second tube body 442, ensuring the sealing of the connection, and enabling the fluid to flow out smoothly along the outlet channel 40a without leakage.

[0095] In one embodiment of the present application, see Figure 4 As shown, one of the inner circumferential side surface of the first tube body 441 and the outer circumferential side surface of the second tube body 442 is formed with a first protrusion 4411, and the other of the inner circumferential side surface of the first tube body 441 and the outer circumferential side surface of the second tube body 442 is formed with a first groove 442a, and the first protrusion 4411 is inserted into the first groove 442a. By providing the first protrusion 4411 and the first groove 442a, the relative positions of the first tube body 441 and the second tube body 442 can be fixed, thereby ensuring the reliability of the connection.

[0096] In one embodiment of the present application, see Figure 4 As shown, one of the outer peripheral side surface of the connecting tube 43 and the inner peripheral side surface of the first tube body 441 is formed with a second protrusion 431, and the other of the outer peripheral side surface of the connecting tube 43 and the inner peripheral side surface of the first tube body 441 is formed with a second groove 441a, and the second protrusion 431 is inserted into the second groove 441a. By providing the second protrusion 4411 and the second groove 442a, the relative position of the first tube body 441 and the connecting tube 43 can be fixed, thereby ensuring the reliability of the connection.

[0097] In one embodiment of the present application, see Figure 1 and Figure 3As shown, the pressing head 42 is disc-shaped, and the 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' connected to the outflow channel 40a. On the one hand, the pressing head 42 is designed to be disc-shaped, which not only makes the container have an attractive appearance, but also facilitates the user to take the fluid. For example, when taking cosmetics, the user usually uses a cotton pad. The user holds the cotton pad and presses it in the flow-containing area 42a, and the fluid flows out onto the cotton pad, which is convenient to operate. On the other hand, the setting of the surface-retaining area 42a can make the fluid flowing out of the flow-taking port 42a' gather to the center of the recess, thereby improving the user's utilization rate when taking the fluid and reducing fluid waste.

[0098] In one embodiment of the present application, see Figure 3 As shown, the top end of the pressing tube 44 is formed with an annular flange 443 located inside the shell 10. In the top projection of the container, the projection of the through hole 13 is located inside the projection of the annular flange 443, and the annular flange 443 can abut against the inner top surface of the shell 10. The annular flange 443 can play a limiting role by providing the annular flange 443, and the annular flange 443 can abut against the inner top surface of the shell 10, so that the pressing member 40 slides according to a fixed stroke without sliding out of the shell 10.

[0099] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A container, characterized in that: include: Housing (10); a first piston (20) sealingly and slidably disposed in the housing (10), the first piston (20) and the housing (10) cooperating to form a first cavity (20a), the first piston (20) being provided with a flow port (20b) and a vent (20c) both capable of communicating with the first cavity (20a); a second piston (30) sealingly slidably disposed in the first piston (20), the second piston (30) and the first piston (20) cooperating to form a second cavity (30a), and the vent (20c) being able to be closed or opened by the second piston (30) in the sliding direction of the second piston (30) so that the first cavity (20a) is isolated from or connected to the atmosphere; a pressing piece (40) sealingly and slidably penetrated on the second piston (30), the pressing piece (40) being provided with an outflow channel (40a) and an outflow port (40b) communicating with the outflow channel (40a), and the outflow port (40b) being able to be closed or opened by the second piston (30) in the sliding direction of the pressing piece (40); The friction resistance between the first piston (20) and the second piston (30) is greater than the friction resistance between the second piston (30) and the pressing member (40), and the friction resistance between the second piston (30) and the pressing member (40) is greater than the friction resistance between the first piston (20) and the housing (10).

2. The container according to claim 1, characterized in that When the pressing member (40) slides from the top side to the bottom side of the container, the first piston (20) and the second piston (30) are first driven to slide synchronously to isolate the first cavity (20a) from the flow port (20b), and then the pressing member (40) is driven to open the flow port (40b), and then the second piston (30) is driven to slide to open the vent (20c).

3. The container according to claim 2, characterized in that The second piston (30) slides a preset distance to open the vent (20c).

4. The container according to claim 1, characterized in that The container comprises an elastic return member (50), wherein the elastic return member (50) provides a force for driving the pressing member (40), the first piston (20) and the second piston (30) to return to their original position.

5. The container according to claim 4, characterized in that The bottom end of the pressing member (40) forms a limiting portion (41), the limiting portion (41) and the elastic return member (50) are located in the second cavity (30a), and the two ends of the elastic return 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 a reset distance.

6. The container according to any one of claims 1 to 5, characterized in that: The vent (20c) is formed on a peripheral side surface of the first piston (20); and / or the flow port (20b) is formed at a bottom of the first piston (20).

7. The container according to any one of claims 1 to 5, characterized in that: The second piston (30) is formed with a third cavity (30b) and an inlet (30c) connected to the third cavity (30b); in the sliding direction of the pressing member (40), the outlet (40b) can be connected to or isolated from the third cavity (30b); in the sliding direction of the second piston (30), the inlet (30c) can be connected to or isolated from the second cavity (30a).

8. The container according to any one of claims 1 to 5, characterized in that: The housing (10) is formed with a housing chamber (10a) for housing the first piston (20), and the housing chamber (10a) is in communication with the atmosphere; The first piston (20) comprises a container (21) with an open top end and an annular sealing portion (22) arranged around the outer periphery of the container (21), wherein the annular sealing portion (22) is in sealing contact with the inner peripheral side surface of the housing (10) to cooperate to form the first cavity (20a); The second piston (30) is sealingly slidably disposed on the inner peripheral side surface of the containing body (21) to cooperate to form the second cavity (30a).

9. The container according to claim 8, characterized in that The accommodating body (21) comprises a first cylindrical portion (211) with an open top, a second cylindrical portion (212) located at the 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); the inner diameter of the first cylindrical portion (211) is larger than the inner diameter of the second cylindrical portion (212); the second piston (30) is sealingly slidably arranged in the first cylindrical portion (211); 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 (30a); the vent (20c) is formed on the peripheral side surface of the first cylindrical portion (211); the bottom end of the second cylindrical portion (212) is open to form the flow port (20b).

10. The container according to claim 9, characterized in that The second piston (30) comprises a closing body (31) covering the top opening of the first cylindrical portion (211) and a sleeve (32) sealingly inserted into the closing body (31); the peripheral side surface of the closing body (31) is in sealing contact with the inner peripheral side surface of the first cylindrical portion (211); a third cavity (30b) is formed in the sleeve (32); the bottom end of the third cavity (30b) is open to form an inlet (30c); one end of the pressing member (40) is sealingly slidably inserted into the sleeve (32); and the outlet (40b) can be closed or opened by the sleeve (32).

11. The container according to claim 10, characterized in that The closing body (31) comprises a sleeve (311), an annular flange (313), and an annular plate (312) connecting the sleeve (311) and the annular flange (313); a step portion (322) is formed on the outer peripheral surface of the sleeve (32); the sleeve (311) is sealingly sleeved outside the sleeve (32), and the bottom of the sleeve (311) abuts against the top surface of the step portion (322).

12. The container according to claim 8, characterized in that The housing (10) comprises a shell body (11) with an open top end and a shell cover (12) covering the open top end of the shell body (11); the shell body (11) and the shell cover (12) are jointly arranged to form the accommodating cavity (10a).

13. The container according to any one of claims 1 to 4, characterized in that: A through hole (13) is formed at the top of the shell (10), and the pressing member (40) comprises a pressing head (42) located outside the shell (10), a connecting tube (43) passing through the through hole (13), and a pressing tube (44) located inside the shell (10); the pressing tube (44) is sealingly and slidably passed through the second piston (30); the top end of the pressing tube (44) is open and the bottom end is closed; the top end of the connecting tube (43) is connected to the pressing head (42), and the bottom end of the connecting tube (43) is connected to the pressing tube (44); the pressing tube (44) and the space inside the connecting tube (43) together constitute the outflow channel (40a); the outflow port (40b) is formed on the peripheral side of the pressing tube (44), and the pressing tube (44) can abut against the second piston (30) to drive the second piston (30) to slide.

14. The container according to claim 13, characterized in that The pressure pipe (44) comprises: A first tube body (441) with both ends open, wherein the bottom end of the connecting tube (43) can restore its deformation to open the top opening of the pressing tube (44) so ​​as to be inserted into the first tube body (441), and the bottom end of the first tube body (441) can abut against the top end of the second piston (30) so as to drive the second piston (30) to slide; A second tube body (442) with an open top and a closed bottom, the second tube body (442) is sealingly slidably penetrated on the second piston (30), the outlet (40b) is formed on the peripheral side of the second tube body (442), the top of the second tube body (442) can restore its deformation to open the bottom open part of the first tube body (441) so as to be inserted into the first tube body (441), and a limiting portion (41) is formed at the bottom end of the second tube body (442), the limiting portion (41) is located on the side of the second piston (30) away from the first tube body (441), and the limiting portion (41) can abut against the second piston (30).

15. The container according to claim 14, characterized in that One of the inner circumferential side surface of the first tube body (441) and the outer circumferential side surface of the second tube body (442) is formed with a first protrusion (4411), and the other of the inner circumferential side surface of the first tube body (441) and the outer circumferential side surface of the second tube body (442) is formed with a first groove (442a), and the first protrusion (4411) is inserted into the first groove (442a).

16. The container according to claim 14, characterized in that A second protrusion (431) is formed on one of the outer peripheral side surface of the connecting tube (43) and the inner peripheral side surface of the first tube body (441), and a second groove (441a) is formed on the other of the outer peripheral side surface of the connecting tube (43) and the inner peripheral side surface of the first tube body (441), and the second protrusion (431) is inserted into the second groove (441a).

17. The container according to claim 13, characterized in that The pressing head (42) is disc-shaped, and the top surface of the pressing head (42) is concave to form a flow-containing area (42a), wherein the flow-containing area (42a) is provided with a flow-taking port (42a') that is in communication with the outflow channel (40a).

18. The container according to claim 13, characterized in that An annular flange (443) located inside the shell (10) is formed at the top end of the pressure tube (44); in a top projection of the container, the projection of the through hole (13) is located inside the projection of the annular flange (443); and the annular flange (443) is capable of abutting against the inner top surface of the shell (10).

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