CN111703731A - Bottle cap for pop-in ready-to-fit container and pop-in ready-to-fit container - Google Patents

Abstract

The invention discloses a bottle cap for a pop-in type instant container, which is arranged on the bottle mouth of a bottle body for use and comprises a lower cap 1, a storage bin 2, a sealing block 3, an upper cap 4 and a protection ring 5. The lower cover 1 is cylindrical and comprises an upper stepped hole 11 and a lower stepped hole 12, and the inner diameter of the upper stepped hole 11 is smaller than that of the lower stepped hole 12. The storage bin 2 is cylindrical, and the bottom of the storage bin is abutted to the top of the sealing block 3. The bottom of the storage bin 2 is slidably sleeved in an upper stepped hole 11 of the lower cover 1. The outer wall of the bin 2 is attached to the inner wall of the upper stepped hole 11 of the lower cover 1. The top of the storage bin 2 is detachably connected with the upper cover 4. The sealing block 3 is embedded in the upper stepped hole 11, and the top of the sealing block is abutted to the bottom of the storage bin 2. The protection ring 5 is sleeved on the storage bin 2 and is positioned between the lower cover 1 and the upper cover 4. The interior of the silo 2 is used as a chamber for placing a second material. The invention has simple structure and easy processing, and when in use, the second material in the storage bin 2 can enter the bottle body to be mixed with the first material only by detaching the protection ring and pressing the upper cover 4 downwards.

Description

Bottle cap for pop-in ready-to-fit container and pop-in ready-to-fit container

technical field

The present invention generally relates to the technical field of packaging, and more particularly, to a bottle cap for a pop-in ready-to-fit container and a pop-in ready-to-fit container.

Background technique

Nutrients in existing beverages will be deteriorated and lost during long-term storage. In order to prolong the shelf life of beverages, it is necessary to add chemical substances such as preservatives, stabilizers, etc., but it may affect the taste of beverages, and the chemical components may cause certain damage to the human body. harm.

In order to solve the above problems, the prior art proposes a technical solution that the main ingredient and the liquid are isolated and stored, and ready-to-use. The beverage bottle comprises an upper cover and a lower cover fixed above the bottle mouth, the upper cover is sleeved on the outer side of the lower cover, and the inside of the upper cover and the lower cover forms a accommodating cavity for storing solid beverages. The bottom of the lower cover is provided with a sealing film; the top port of the lower cover is provided with a sealing ring to keep the accommodating cavity in the upper cover and the lower cover sealed from the outside world, preventing the solid beverage stored in the inner accommodating cavity from being damp and deteriorated. It can be pre-separated and stored according to the different tastes of solid beverages and liquid beverages, which is convenient for different groups of people and adapts to different tastes.

For another example, CN201721240288.5 discloses a ready-to-fit beverage bottle cap, comprising an upper cap and a lower cap, the upper cap has an open cavity formed by the side wall and the top wall, and the lower cap comprises a The storage part for storing beverage ingredients and the installation part for connecting the bottle body are isolated by the separator. The outer wall of the storage part of the lower cover is clamped into the cavity of the upper cover and cooperates with the side wall of the upper cover, so that the upper cover can be installed around the lower cover Department rotates. The middle part of the separator of the lower cover is provided with an annular opening groove, and the opening groove is provided with a protrusion that engages with the groove of the hollow shaft sleeve.

Although the above-mentioned bottle cap plays the role of isolating the liquid and the main material, the structure is complicated, the operation is cumbersome, and it is easy to be damaged. How to provide a ready-to-fit bottle cap and container with a simple structure and strong durability is an urgent problem to be solved.

SUMMARY OF THE INVENTION

In order to solve the above problem, the present invention discloses a bottle cap for a pop-in ready-to-fit container, which is characterized in that it comprises a lower cap (1), a silo (2), a sealing block (3), an upper cap (4) and a The protection ring (5), the lower cover (1) is cylindrical, and is provided with a stepped hole that is transparent up and down, including an upper stepped hole (11) and a lower stepped hole (12), and the upper stepped hole (11) has an inner diameter Smaller than the inner diameter of the lower stepped hole (12), the lower stepped hole (12) is used for connecting with the bottle mouth, and the upper stepped hole (11) is used for accommodating the material bin (2) and the sealing block (3).

The silo (2) is cylindrical, the lower end of the silo (2) is sleeved in the upper stepped hole (11) of the lower cover (1), and the outer wall of the silo (2) is attached to the lower cover (1). The inner wall of the upper stepped hole (11) of the cover (1) can slide up and down, and the upper end of the material bin (2) is detachably connected to the upper cover (4); the sealing block (3) is embedded in the upper stepped hole (11). ), the top surface of the sealing block (3) is in contact with the bottom surface of the silo (2), and is fixed on the inner wall of the upper stepped hole (11) through elastic deformation.

The protection ring (5) is annularly located between the lower cover (1) and the upper cover (4), the upper cover (4), the protection ring (5), the lower cover ( 1) One-piece structure, by removing the protection ring (5), the upper cover (4) and the lower cover (1) are separated; the upper end surface of the lower cover (1) is used as a positioning surface to pass through with the upper cover ( 4) Or the abutment of the upper limit ring (22) formed on the silo (2) limits the downward movement range of the silo (2), and the space inside the silo (2) is used as a chamber for Store the second material.

Preferably, the inner wall of the upper stepped hole (11) includes a longitudinally arranged limit groove (111); the outer surface of the side wall of the silo (2) is provided with a limit block matching the limit groove (111). (21); the limiting block (21) is embedded in the limiting groove (111) and can slide up and down.

Preferably, the limiting block (21) is elastically connected with a limiting protrusion (211), the limiting protrusion (211) can be displaced in the radial direction, and the limiting block (21) radially under the action of the elastic force Protruding from the limit block (21) in the direction, the limit groove (111) is provided with a groove (112), the groove 112 is recessed outward in the radial direction, and the limit protrusion (211) ) and the position of the groove (112) are set so that when the bin (2) moves down to the lower limit position, the limiting protrusion (211) enters the groove (211) under the action of elastic force. 112), through the cooperation of the limiting protrusion (211) and the groove (112), the material bin (2) is prevented from moving upward.

Preferably, the upper cover (4), the protection ring (5), and the lower cover (1) are of one-piece structure, and the connection between one end of the protection ring (5) and the lower bottom surface of the upper cover (4), Tear lines (52, 53) are respectively formed at the connection between the other end and the edge of the upper surface of the lower cover (1), and a slider (51) is provided on the side wall of the protection ring (5).

Preferably, a thread corresponding to the bottle mouth of the bottle body is formed on the inner peripheral surface of the lower stepped hole 12 of the lower cover 1 .

Preferably, the width of the protection ring (5) is greater than or equal to the distance between the top surface of the sealing block (3) and the lower surface of the upper stepped hole (11).

Preferably, the upper limit ring 22 is an annular protrusion with an outer thread formed on the outer peripheral surface, an inner thread formed on the inner peripheral surface of the upper cover 1, and the upper cover 1 is fixed on the upper limit ring 22 by screw connection superior.

The disclosure also discloses a pop-in ready-to-fit container, comprising a bottle body and a bottle cap fixed on the bottle mouth of the bottle body, and the bottle cap adopts the pop-in ready-to-fit container described in any of the above embodiments. Containers with caps.

The invention makes use of the difference in the diameter of the upper stepped hole and the lower stepped hole, and slides from the upper stepped hole with a smaller diameter to the lower stepped hole with a larger diameter through the silo and the sealing block, so that the sealing block falls off and the inner chamber of the silo is released. The second material has a simple structure and is easy to process. At the same time, the upper end of the silo (chamber) is closed by the upper cover, and the lower end is closed by the sealing block. The entire second material is in a sealed state and will not come into contact with the first material in the bottle body, and there is no contact with the outside world during the release process. , to avoid being polluted, with high safety.

The upper cover and the lower cover are separated by the protection ring, not only the structure is simple, but the protection ring can be removed by methods such as tearing. By setting limit protrusions and grooves to limit the range of the silo to slide upwards, it can prevent the silo from moving upwards and falling off after the protection ring is removed, especially suitable for bottles with high-pressure gas inside. As long as the upper cover is pressed down and the silo moves down, the sealing block can be pushed into the bottle, and the entire bottom surface of the silo is fully opened, especially suitable for block or large particle materials. The sealing block of the cap sinks into the bottle body, and shaking the bottle body at this time can also make it agitate, and accelerate the mixing of the second material and the first material in the bottle body.

Description of drawings

Fig. 1 is the exploded schematic diagram of the cap for pop-in ready-to-fit container;

Fig. 2 is A-A sectional view in Fig. 1;

FIG. 3 is a B-B sectional view showing the structure of the lower cover and the silo in FIG. 1;

FIG. 4 is a schematic view of a beverage bottle installed with a pop-in ready-to-fit container cap.

Detailed ways

The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Reference numerals refer to components and techniques in the present invention, so that the advantages and features of the present invention can be more easily understood in a suitable environment. The following description is an embodiment of the claims of the present invention, and other specific implementations related to the claims that are not expressly stated also belong to the scope of the claims.

In this embodiment, a bottle cap for a pop-in ready-to-fit container and a container to which the cap for a pop-in ready-to-fit container is attached will be described by taking a beverage bottle as an example.

FIG. 4 is a schematic structural diagram of a beverage bottle installed with a pop-in ready-to-fit container cap. The beverage bottle is composed of a bottle body 6 and a bottle cap for a pop-in ready-to-fit container (hereinafter referred to as a bottle cap). The bottle body 6 is an existing plastic bottle, the bottle mouth is provided with threads, and the bottle cap 60 is fixed on the bottle mouth of the bottle body 6 through a threaded connection. In this embodiment, the beverage is prepared on-site from two substances into a beverage. The first material is liquid stored in the bottle body 6 (for example, water with high pressure gas), and the second material is block-shaped solid beverage (eg, meat particles), and the block-shaped solid beverage is stored in the bottle cap 60 . After the bottle cap 60 is opened, the first material and the second material are mixed into a drink and then poured out from the bottle mouth for drinking.

The specific structure of the bottle cap 60 will be described below.

FIG. 1 is an exploded schematic view of a bottle cap for a pop-in ready-to-fit container, and FIG. 2 is a cross-sectional view A-A in FIG. 1 .

As shown in FIGS. 1 and 2 , the bottle cap 60 includes a lower cap 1 , a bin 2 , a sealing block 3 , an upper cap 4 and a protection ring 5 . The lower cover 1 has a cylindrical shape, and is provided with a vertically transparent stepped hole, including an upper stepped hole 11 and a lower stepped hole 12. The inner diameter of the upper stepped hole 11 is smaller than the inner diameter of the lower stepped hole 12 (see FIG. 1). The lower stepped hole 12 is used for connecting with the bottle mouth of the bottle body 6 , and a thread corresponding to the bottle mouth is formed on the inner peripheral surface (see FIG. 3 ).

The upper stepped hole 11 accommodates the silo 2 and the sealing block 3 . The silo 2 is in the shape of a cylinder that penetrates up and down. The lower end of the silo 2 is slidably sleeved in the upper stepped hole 11 of the lower cover 1 . The space inside the silo 2 serves as a chamber for placing the second material.

The upper end of the silo 2 is detachably connected to the upper cover 4 . That is, the upper end of the silo 2 extends outward in the radial direction from the outer surface to form an annular upper limit ring 22 . An outer thread is formed on the outer peripheral surface of the upper limit ring 22, and an inner thread is formed on the inner peripheral surface of the upper cover 1, and the two are fixed together by screw connection (see FIG. 2).

The sealing block 3 is embedded in the upper stepped hole 11 and is located below the silo 2 , and the top surface of the sealing block 3 is in contact with the bottom surface of the silo 2 . The sealing block 3 is an elastic material, and is fixed on the inner wall of the upper stepped hole 11 through elastic deformation (refer to FIG. 2 ).

The protection ring 5 is annularly located between the lower cover 1 and the upper cover 4 to isolate the lower cover 1 and the upper cover 4 . Therefore, when the protection ring 5 is installed, the upper cover 4 cannot be pressed, and the silo 2 and the sealing block 3 cannot move. In this embodiment, the upper cover 4 , the protection ring 5 , and the lower cover 1 have an integral structure. Tear lines 52 and 53 are formed at the connection between the protection ring 5 and the upper cover 4 and the lower cover 1 respectively, and a slider 51 is provided on the side wall of the protection ring 5. Pull the slider 51 to disconnect and cut the protection ring 5 along the The tear lines 52 and 53 can remove the protection ring 5 from between the lower cover 1 and the upper cover 4. At this time, the upper cover 4 can be pressed down so that the upper cover 4 can drive the silo 2 and the sealing block 3 to move downward. .

In this embodiment, the upper end surface of the lower cover 1 (the upper end surface of the upper stepped hole 11 ) serves as a positioning surface to limit the downward movement range of the magazine 2 by contacting with the upper cover 4 . That is to say, the width of the protection ring 5 is set to be slightly larger than the distance between the top surface of the sealing block 3 and the lower surface of the upper stepped hole 11. At this time, the moving range of the upper cover 4 is equal to the width of the protection ring 5. Press the upper cover 4 to contact the upper step. When the upper end face of the hole 11 is opened, the sealing block 3 can be pushed out, separated from the upper stepped hole 11 , and dropped into the bottle body 6 .

As a modification example, the upper limit ring (22) formed on the silo (2) can also be used to limit the downward movement range of the silo 2 by contacting the upper end surface of the lower cover 1. At this time, the size of the upper cover 4 and the width of the protection ring 5 can be set without limitation.

FIG. 3 is a B-B sectional view showing the structure of the lower cover and the silo in FIG. 1;

As shown in FIG. 3 , the inner wall of the upper stepped hole 11 of the lower cover 1 is symmetrically provided with two longitudinally (axially) extending limiting grooves 111 . The inner wall of the upper stepped hole 11 is provided with two longitudinal limit slots 111 corresponding to the limit slots 111, which are used to limit the position of the silo 2 in the rotation direction, so that the silo 2 can only slide up and down along the limit slots 111, cannot be rotated. The number of the limiting grooves 111 is not limited to two, and one or more can be provided. In this example, two limit slots 111 are symmetrically arranged, and the corresponding relationship between the limit slots 111 and the limit blocks 21 may not be considered when installing the silo 2, which is convenient for arbitrary installation.

As shown in FIG. 3 , the lower end of the limit block 21 is provided with a limit protrusion 211 . The limit protrusion 211 is elastically connected to the lower end of the limit block 21 and protrudes outward from the limit block 21 in the radial direction. Pushing inwards will cause it to retract inwards.

The bottom of the limiting groove 111 is formed with a groove 112 corresponding to the limiting protrusion 211 . The groove 112 is concave outward in the radial direction. When the limiting protrusion 211 enters the groove 112 , it pops out and resets.

The position of the limiting protrusion 211 and the groove 112 is set so that when the silo 2 moves down to the lower limit position, the limiting protrusion 211 enters the groove 112 under the action of elastic force, and passes through the limiting protrusion 211 and the groove 112 The cooperation prevents the silo 2 from moving upward.

In FIG. 3 , the m position is the position of the limiting protrusion 211 when the bin 2 is installed in the upper stepped hole 11 and the upper cover 4 , the protection ring 5 and the lower cover 1 are in a connected state. The n position in Fig. 3 is the position when the protection ring 5 is removed, the upper cover 4 is pressed down, the upper cover 4 moves down, and abuts with the lower cover 1 (the silo moves to the lowest point).

Therefore, when the protection ring 5 is not removed, the limiting block 21 enters the limiting groove 111 and is pressed by the inner surface of the limiting groove 111 , the limiting protrusion 211 retreats, and the end surface of the limiting protrusion 211 is pressed against the end surface of the limiting protrusion 211 under the action of the elastic force. Connected to the inner surface of the limiting groove 111 . When the protective ring 5 is removed, and the upper cover 4 is pressed down to move the silo 2 downward, the limiting protrusion 211 slides along the inner surface of the limiting groove 111 until it moves to the position of the groove 112, and is reset into the recess under the action of elastic force. Inside the groove 112, through the cooperation of the limiting protrusion 211 and the groove 112, the silo 2 moves to the bottom and remains at this position, which plays a fixed role. Since the silo 2 can no longer move upward, the silo 2 will not be pushed out due to the action of the high-pressure gas inside the bottle body 6, and will not fall off during use.

In this embodiment, the limiting protrusion 211 is a triangular prism-shaped protrusion, but it is not limited thereto, and any existing or future structures may be used.

After pressing the upper cover 4 to make the sealing block 3 disengage from the upper stepped hole 11, the chamber inside the silo 2 is communicated with the inside of the bottle body 6, the second material in the chamber enters the bottle body 6 and mixes with the first material, and the bottle body 6 is shaken. After fully mixing the second material and the first material, the drink is ready.

Since the sealing block 3 (with a larger specific gravity than the first material) falls into the bottle body 6, when the bottle body 6 is shaken, the sealing block 3 can play a stirring role and accelerate the dissolution of the second material. After fully dissolving, unscrew the upper cover 4 and pour out the beverage from the upper port of the silo 2 to drink.

The second material can also be in other forms such as liquid or solid granular, powdery materials. Due to the large opening, it is especially suitable for bulk materials.

In this embodiment, the upper cover 4 , the protection ring 5 , and the lower cover 1 have an integrated structure, and the silo 2 is provided in the protection ring 5 and the lower cover 1 . The protection ring 5 is detachably sleeved on the outside of the silo 2 . When the protection ring 5 is not removed, the relative position of the upper cover 4 and the lower cover 1 is limited, that is, the movement of the upper cover 4 is restricted. Moreover, the upper cover 4 is detachably connected with the silo 2. When the upper cover 4 is not removed, the chamber inside the silo 2 is closed by the upper cover 4, and the second material in the chamber is isolated from the outside world.

As the guard ring 5 is not limited to the above structure, there may be various other implementations. As an annular body, as long as the inner diameter is smaller than the outer diameter of the lower cover 1 and the outer diameter of the upper cover 4, it is located between the upper cover 4 and the lower cover 1, even if there is no fixed connection with the upper cover 4 and the lower cover 1, it can play the role of The function of the two approaching each other is limited, so that the silo 2 cannot slide inside the lower cover 1, and the material in the silo 2 is prevented from entering the bottle.

When the sealing block 3 is not installed, the outer diameter is larger than the inner diameter of the upper stepped hole 11 , and is fixed in the upper stepped hole 11 by pressing the inner wall of the upper stepped hole 11 . In addition to the cylindrical shape corresponding to the shape of the upper stepped hole 11, the sealing block 3 can also adopt other shapes such as spherical, and can also be used in combination of two objects, as long as the structure has a good sealing effect and is not easy to fall off.

The silo 2 is sleeved in the upper stepped hole 11 and can slide up and down. The space inside the silo 2 is used for loading the second material. The sealing block 3 is embedded in the upper stepped hole 11 , and the top surface of the sealing block 3 is in contact with the bottom surface of the silo 2 , so that the side wall of the silo 2 and the top surface of the sealing block 3 form a cavity with a closed bottom. The upper part of the cavity, that is, the upper end of the silo 2 is closed by the upper cover 4, so the second material loaded in the cavity is in a sealed state.

Since the sealing block 3 is fixed on the inner wall of the upper stepped hole 11 by extrusion, the sealing block 3 can be axially slid along the upper stepped hole 11 only by applying sufficient external force. Violent shaking, will not fall off. When in use, remove the protective ring 5, apply a certain pressing force on the upper cover 4, and make the sealing block 3 slide from the upper stepped hole 11 to the downward stepped hole 12. When the upper cover 4 abuts on the upper end surface of the lower cover 1, the sealing The block 3 is separated from the upper stepped hole 11. At this time, the second material in the silo 2 is no longer blocked by the sealing block 3, and falls down into the bottle. Using the sealing block 3 sunk into the bottom of the bottle body 6, the bottle is shaken or shaken. The body 6 can also make it play a stirring role to accelerate the dissolution of the second material. After that, the upper cover 4 is opened, and the beverage can be poured out from the outlet at the upper end of the silo 2 for drinking or directly facing the outlet at the upper end of the silo 2 for drinking.

The present invention utilizes the difference in the diameter of the upper stepped hole 11 and the lower stepped hole 12 to slide from the upper stepped hole 11 with the smaller hole diameter to the lower stepped hole 12 with the larger hole diameter through the silo 2 and the sealing block 3, so that the sealing block 3 falls off , release the material, the structure is simple, easy to process; at the same time, the material is all sealed in the silo 2, and there is no contact with the outside world during the release process, so as to prevent the beverage from being polluted, and the safety is high; the protection ring 5, the lower cover 1 and the upper cover 4 are One-piece structure, the protection ring 5 can be simply removed by setting the tear pattern, which is convenient to use.

Except for threaded connection between the lower cover 1 and the bottle mouth or between the top of the bin 2 and the upper cover 4, any of the following connection methods can be adopted: pivot connection and snap connection.

To sum up, the present invention utilizes the difference in the diameter of the upper stepped hole and the lower stepped hole to slide from the upper stepped hole with the smaller hole diameter to the lower stepped hole with the larger hole diameter through the silo and the sealing block, so that the sealing block falls off and is released. The second material in the inner chamber of the silo has a simple structure and is easy to process. At the same time, the upper end of the silo (chamber) is closed by the upper cover, and the lower end is closed by the sealing block. The entire second material is in a sealed state and will not come into contact with the first material in the bottle body, and there is no contact with the outside world during the release process. , to avoid being polluted, with high safety.

The upper cover and the lower cover are separated by the protection ring, not only the structure is simple, but the protection ring can be removed by methods such as tearing. By setting limit protrusions and grooves to limit the range of the silo to slide upwards, it can prevent the silo from moving upwards and falling off after the protection ring is removed, especially suitable for bottles with high-pressure gas inside. As long as the upper cover is pressed down and the silo moves down, the sealing block can be pushed into the bottle, and the entire bottom surface of the silo is fully opened, especially suitable for block or large particle materials. The sealing block of the cap sinks into the bottle body, and shaking the bottle body at this time can also make it agitate, and accelerate the mixing of the second material and the first material in the bottle body.

The pop-in ready-to-fit container is not limited to beverage bottles, but can be any two kinds of materials that need to be stored separately for on-site configuration, such as pesticide bottles.

It should be noted that the above-described embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (8)

1. A cap for a pop-in ready-to-fit container, characterized in that it comprises a lower cover (1), a silo (2), a sealing block (3), an upper cover (4) and a protection ring (5), The lower cover (1) is in the shape of a cylinder, and is provided with a step hole that is transparent up and down, including an upper step hole (11) and a lower step hole (12). The upper step hole (11) has an inner diameter smaller than the lower step hole (12). ) inner diameter, the lower stepped hole (12) is used to connect with the bottle mouth, and the upper stepped hole (11) is used to accommodate the material bin (2) and the sealing block (3); The silo (2) is cylindrical, the lower end of the silo (2) is sleeved in the upper stepped hole (11) of the lower cover (1), and the outer wall of the silo (2) is attached to the lower cover (1). The inner wall of the upper stepped hole (11) of the cover (1) can slide up and down, and the upper end of the material bin (2) is detachably connected to the upper cover (4); The sealing block (3) is embedded in the upper stepped hole (11), the top surface of the sealing block (3) is in contact with the bottom surface of the silo (2), and is fixed on the inner wall of the upper stepped hole (11) through elastic deformation ; The protection ring (5) is annularly located between the lower cover (1) and the upper cover (4), the upper cover (4), the protection ring (5), the lower cover ( 1) One-piece structure, the upper cover (4) and the lower cover (1) are separated by removing the protection ring (5); The upper end surface of the lower cover (1) is used as a positioning surface to limit the downward movement of the silo (2) by abutting with the upper cover (4) or the upper limit ring (22) formed on the silo (2). In the moving range, the space inside the silo (2) is used as a chamber for storing the second material. 2. The bottle cap for pop-in ready-to-fit container according to claim 1, characterized in that, The inner wall of the upper stepped hole (11) includes a longitudinally arranged limit groove (111); A limit block (21) matched with the limit groove (111) is provided on the outer surface of the side wall of the silo (2); The limiting block (21) is embedded in the limiting groove (111) and can slide up and down. 3. The bottle cap for pop-in ready-to-fit container according to claim 2, characterized in that, The limit block (21) is elastically connected with a limit protrusion (211), the limit protrusion (211) can be displaced in the radial direction, and the limit block (21) is in the radial direction under the action of the elastic force Protruding from the limit block (21), A groove (112) is provided at the limiting groove (111), and the groove 112 is recessed outward in the radial direction, The positions of the limiting protrusions (211) and the grooves (112) are set so that when the material bin (2) moves down to the lower limit position, the limiting protrusions (211) are under the action of elastic force. Enter the groove (112) downward, and the material bin (2) is prevented from moving upward through the cooperation of the limiting protrusion (211) and the groove (112). 4. The pop-in type ready-to-fit container bottle cap according to claim 1, wherein the upper cover (4), the protection ring (5), and the lower cover (1) are one-piece Structure, the connection between one end of the protection ring (5) and the lower bottom surface of the upper cover (4), and the connection between the other end and the edge of the upper surface of the lower cover (1) is formed with tear lines (52, 53) respectively. The side wall of the protection ring (5) is provided with a slider (51). 5. The cap for pop-in ready-to-fit container according to any one of claims 1 to 4, characterized in that, A thread corresponding to the bottle mouth of the bottle body is formed on the inner peripheral surface of the lower stepped hole (12) of the lower cover (1). 6. The pop-in ready-to-fit bottle cap according to any one of claims 1 to 4, wherein the width of the protection ring (5) is greater than or equal to the top of the sealing block (3) The distance between the surface and the lower surface of the upper stepped hole (11). 7. The bottle cap for a snap-in ready-to-fit container according to claim 6, wherein the upper limit ring (22) is an annular protrusion, and an external thread is formed on the outer peripheral surface, and the upper cover (22) is an annular protrusion. 1) An inner thread is formed on the inner peripheral surface, and the upper cover (1) is fixed on the upper limit ring (22) through a screw connection. 8. A snap-in ready-to-fit container, characterized in that it comprises a bottle body and a bottle cap fixed on the bottle mouth of the bottle body, and the bottle cap adopts the bomb according to any one of claims 1 to 7. Caps for ready-to-fit containers.

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