Fresh-keeping packaging cover

Abstract

The utility model relates to a fresh-keeping packaging cover, which comprises an upper cover, a lower cover, an upper cover and a lower cover, a sealing piece is arranged at an opening in the bottom of the base, and the upper cover covers the top of the base, so that a material storage cavity is formed among the inner wall of the top of the upper cover, the annular inner wall of the base and the top surface of the sealing piece; the puncture part is located in the material storage chamber; when the upper cover and the base are in an initial assembly state, a first gap is formed between the top of the puncture part and the inner wall of the top of the upper cover, a second gap is formed between the bottom of the puncture part and the top face of the sealing piece, and the space, located on the inner side of the puncture part, in the material storage cavity communicates with the space, located on the outer side of the puncture part, in the material storage cavity through the first gap and the second gap; when the upper cover is in a screwing upward-moving state, the driving piece pushes the puncturing piece to rotate and move downwards and cut off the sealing piece. According to the utility model, the technical problem that the storage space of the cover with an independent closed storage space is limited is solved.

Description

Technical Field

[0001] The utility model relates to the field of food packaging, and further relates to a fresh-keeping packaging lid, and particularly relates to a fresh-keeping packaging lid with a large sealed chamber formed inside. Background Art

[0002] At present, a combined lid with a separate sealed storage space appears in the beverage market. Its working principle is as follows: basic raw materials (such as solid powders, concentrated liquids, drugs, probiotics, etc.) are filled into a lid with a separate sealed chamber to achieve the storage and freshness preservation of the basic raw materials. A container that is matched with the lid and located below the lid is filled with pure water or a basic solution for mixing with or dissolving the basic raw materials. When drinking, the sealed chamber is opened through a switching mechanism arranged on the lid, and the basic raw materials are put into the packaging container below. After being fully shaken, it can be directly drunk.

[0003] However, due to the limited internal space of the lid, and problems such as considering sealing and how to assemble a cutting structure for cutting the sealing position, the range of the sealed chamber that can be used for storing basic raw materials is very limited, resulting in a limited amount of the stored basic raw materials, and possibly causing the problem that the taste of the dissolved beverage cannot meet the expectation.

[0004] Aiming at the problem of limited storage space in the lid with a separate sealed storage space in the related art, no effective solution has been given yet.

[0005] Therefore, the utility model provides a fresh-keeping packaging lid to overcome the defects of the prior art. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a fresh-keeping packaging lid, which connects the inner space and the outer space of the lid body inside the puncture piece, so that the space inside the lid body can be used to accommodate materials. The storage space will not be limited due to the setting of the puncture piece, and more materials can be accommodated, improving the use experience of consumers.

[0007] The purpose of the utility model can be achieved by the following scheme:

[0008] The utility model provides a fresh-keeping packaging lid, which is used to be arranged at the opening of a container body. The fresh-keeping packaging lid includes:

[0009] An upper lid, which is a cylindrical shape with a sealed top and an open bottom, and a driving part is arranged inside the upper lid;

[0010] Base, the base is in a cylindrical shape with an open top and an open bottom. A sealing piece is provided at the open bottom of the base. The upper cover is covered on the top of the base to form a storage chamber for storing materials between the inner wall of the top of the upper cover, the annular inner wall of the base and the top surface of the sealing piece;

[0011] Piercing member, the piercing member is located in the storage chamber, and the piercing member is sleeved on the outer periphery of the driving member and can move up and down and rotate circumferentially;

[0012] In the initial assembly state of the upper cover and the base, vertically, the piercing member is located between the inner wall of the top of the upper cover and the sealing piece, and there is a first gap between the top of the piercing member and the inner wall of the top of the upper cover, and there is a second gap between the bottom of the piercing member and the top surface of the sealing piece. Through the first gap and the second gap, the space inside the piercing member in the storage chamber is connected to the space outside the piercing member;

[0013] When the upper cover is in the state of being screwed and lifted, the driving member pushes the piercing member to rotate downward and cut the sealing piece.

[0014] In a preferred embodiment of the present invention, the piercing member is in a cylindrical shape with both ends open and vertically arranged, the driving member is in a cylindrical shape vertically arranged, the top of the driving member is hermetically connected to the inner wall of the upper cover, the bottom of the driving member is open, and the driving member has a hollow portion communicating with the inside and the inside of the driving member. In the initial assembly state of the upper cover and the base, the piercing member is located below the hollow portion, so that above the piercing member, the space inside the piercing member in the storage chamber is connected to the space outside the piercing member in sequence through the hollow portion and the first gap.

[0015] In a preferred embodiment of the present invention, cutting teeth are provided at the bottom of the piercing member. In the initial assembly state of the piercing member, there is the second gap between the cutting teeth and the top surface of the sealing piece, so that below the piercing member, the space inside the piercing member in the storage chamber is connected to the space outside the piercing member through the second gap.

[0016] In a preferred embodiment of the present invention, a driving structure for driving the piercing member to rotate downward is provided between the driving member and the piercing member. The driving structure includes at least one driving post provided on the outer wall of the driving member and a driving track provided on the inner wall of the piercing member. When the upper cover is in the state of being screwed and lifted, the driving track abuts against the driving post and pushes the driving post to slide upward along the driving track to push the piercing member to rotate downward.

[0017] In a preferred embodiment of the present utility model, the driving column extends vertically, and the length of the driving column is equal to or close to the axial length of the driving member.

[0018] In a preferred embodiment of the present utility model, the number of the driving columns is multiple, and the multiple driving columns are circumferentially spaced apart along the driving member;

[0019] The number of the driving tracks is multiple, the multiple driving tracks are circumferentially spaced apart along the puncturing member, and the multiple driving columns correspond to the multiple driving tracks one by one and are in alignment and cooperation.

[0020] In a preferred embodiment of the present utility model, the number of the cutting teeth is two, and the two cutting teeth are non-radially symmetrically arranged on the puncturing member.

[0021] In a preferred embodiment of the present utility model, a retaining piece is arranged at least on one side of the bottom of the puncturing member and located at the cutting teeth, so as to push the sealing piece to open downward after the cutting teeth cut the sealing piece;

[0022] When the puncturing member is in the initial assembly state, at least part of the second gap is located between the retaining piece and the top surface of the sealing piece.

[0023] In a preferred embodiment of the present utility model, an annular thin-wall area is arranged on the sealing piece and near its annular outer edge, the thickness of the thin-wall area is smaller than the thickness of the main body of the sealing piece, and in the vertical direction, the cutting teeth are opposite to the thin-wall area;

[0024] The thin-wall area includes a connected cutting section and a retaining section, and the cutting teeth cut the sealing piece along the cutting section.

[0025] In a preferred embodiment of the present utility model, there are internally threaded and externally threaded portions for mating screw connection between the inner wall of the upper cover and the outer wall of the base.

[0026] In a preferred embodiment of the present utility model, a first guiding thread is arranged on the outer wall of the puncturing member, a second guiding thread is arranged on the inner wall of the base, and the puncturing member and the base are screwed together through the first guiding thread and the second guiding thread;

[0027] The number of groups of the first guiding thread and the second guiding thread is greater than or equal to the number of groups of the internal thread and the external thread.

[0028] In a preferred embodiment of the present utility model, notches and limiting blocks for cooperative limiting are provided on the first guiding thread and the second guiding thread, and the limiting blocks can be embedded in the notches to limit the initial position of the puncturing member.

[0029] In a preferred embodiment of the present utility model, a circular flange platform is formed along the circumferential direction of the bottom of the base, and the outer diameter or width of the flange platform is greater than or equal to the outer diameter of the upper cover.

[0030] In a preferred embodiment of the present utility model, the outer diameter or width of the flange platform is greater than 26 mm and less than 30 mm; the outer diameter of the base is greater than 24 mm and less than 30 mm.

[0031] In a preferred embodiment of the present utility model, a circular inclined surface extending obliquely away from the central axis from top to bottom is provided below the flange platform, and a plurality of ribs for heat-sealing with the opening of the container body are provided on the circular inclined surface.

[0032] In a preferred embodiment of the present utility model, a protruding buckling structure is formed on the inner wall of the bottom of the circular inclined surface.

[0033] In a preferred embodiment of the present utility model, the base is used to be bonded to the container body through a corner structure, flange bonding, snap connection or threaded connection.

[0034] As described above, the features and advantages of the fresh-keeping packaging cover of the present utility model are:

[0035] A sealing sheet is provided at the bottom opening of the base, and a driving member is provided inside the upper cover. The upper cover is covered on the top of the base, so that a storage cavity for accommodating materials is formed by enclosing between the inner wall of the top of the upper cover, the circular inner wall of the base and the top surface of the sealing sheet. That is, the internal space of the assembled packaging cover can all be used as a storage cavity for accommodating materials. During the opening process, only need to screw the upper cover to move it upward, and the driving member pushes the puncturing member located in the storage cavity to rotate downward and cut the sealing sheet, and the materials in the storage cavity can sequentially pass through the bottom opening of the base and the opening on the container body and fall into the container body. Only need to screw the upper cover to complete the feeding of the materials. The operation is simple and convenient, improving the use experience of consumers and being suitable for popularization and use;

[0036] In this application, in the initial assembled state of the upper cover and the base, the piercing member is arranged at a special position, that is, vertically, the piercing member is located between the top inner wall of the upper cover and the sealing sheet, and there is a first gap between the top of the piercing member and the top inner wall of the upper cover, and there is a second gap between the bottom of the piercing member and the top surface of the sealing sheet. Thus, the space inside the piercing member and the space outside the piercing member in the storage chamber can be connected through the first gap and the second gap. Compared with the existing cover body, the space of the storage chamber will not be limited due to the arrangement of the piercing member, so that the space inside the cover can be used to accommodate materials, and thus more materials can be accommodated, improving the user experience of consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The following drawings are only intended to illustrate and explain the present utility model schematically and do not limit the scope of the present utility model. Among them:

[0038] Figure 1 : is a perspective view of the freshness-keeping packaging cover of the present utility model.

[0039] Figure 2 : is one of the front sectional views of the freshness-keeping packaging cover of the present utility model.

[0040] Figure 3 : is the second front sectional view of the freshness-keeping packaging cover of the present utility model.

[0041] Figure 4 : is a schematic diagram of the internal structure of the upper cover in the freshness-keeping packaging cover of the present utility model.

[0042] Figure 5 : is a partial sectional view of the upper cover in the freshness-keeping packaging cover of the present utility model.

[0043] Figure 6 : is a perspective view of the base in the freshness-keeping packaging cover of the present utility model.

[0044] Figure 7 : is a front sectional view of the base in the freshness-keeping packaging cover of the present utility model.

[0045] Figure 8 : is one of the perspective views of the piercing member in the freshness-keeping packaging cover of the present utility model.

[0046] Figure 9 : is the second perspective view of the piercing member in the freshness-keeping packaging cover of the present utility model.

[0047] Figure 10 : is a schematic diagram of the cutting position on the sealing sheet in the freshness-keeping packaging cover of the present utility model.

[0048] Figure 11 : is a front view of the freshness-keeping packaging cover of the present utility model.

[0049] The accompanying drawings in the present utility model are as follows:

[0050] 1. Upper cover; 101. Internal thread;

[0051] 2. Base; 201. External thread;

[0052] 202, second guide thread; 2021, limit block;

[0053] 203, flange; 204, annular bevel;

[0054] 205, convex rib; 206, undercut structure;

[0055] 3. piercing member; 301. cutting teeth;

[0056] 302, driving track; 303, blocking piece;

[0057] 304, first guide thread; 3041, notch;

[0058] 4. Driving member; 401. Driving column;

[0059] 402, hollow portion; 5, sealing sheet;

[0060] 501, thin-walled area; 5011, cutting section;

[0061] 5012, retention section; 6, storage chamber;

[0062] 7. First gap; 8. Second gap. DETAILED DESCRIPTION

[0063] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0064] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0066] As used herein, the terms "upper", "lower", "top", "bottom", "inner", "outer" and similar directional expressions are all based on the directions of "upper", "lower", "top", "bottom", "inner", "outer", etc. in Figure 2 Hereby, it is explained that this is only for more clearly and definitely clarifying the structure of the fresh-keeping packaging lid of this application and does not represent the only embodiment.

[0067] Embodiment 1

[0068] As Figures 1 to 11 shown, the present utility model provides a fresh-keeping packaging lid, which is used to be arranged at the opening of a container body. The fresh-keeping packaging lid includes: an upper lid 1, the upper lid 1 is a cylindrical shape with a sealed top and an open bottom, and a driving member 4 is arranged inside the upper lid 1, and the driving member 4 is a vertically arranged cylindrical shape; a base 2 (i.e., the lower lid of the packaging lid), the base 2 is a cylindrical shape with an open top and an open bottom, and a sealing sheet 5 is arranged at the open bottom of the base 2, and the upper lid 1 is screwed and covered on the top of the base 2 to form a storage chamber 6 for storing materials between the inner wall of the top of the upper lid 1, the annular inner wall of the base 2 and the top surface of the sealing sheet 5; a puncturing member 3, the puncturing member 3 is located in the storage chamber 6, and the puncturing member 3 is sleeved on the outer periphery of the driving member 4 and can move up and down and rotate circumferentially; when the upper lid 1 and the base 2 are in the initial assembled state (that is, the upper lid 1 is not screwed and lifted relative to the base 2), vertically, the puncturing member 3 is located between the inner wall of the top of the upper lid 1 and the sealing sheet 5, and there is a first gap 7 between the top of the puncturing member 3 and the inner wall of the top of the upper lid 1, and there is a second gap 8 between the bottom of the puncturing member 3 and the top surface of the sealing sheet 5, and the space inside the puncturing member 3 and the space outside the puncturing member 3 in the storage chamber 6 are connected through the first gap 7 and the second gap 8; when the upper lid 1 is in the screwed and lifted state, the driving member 4 plays a role of driving and guiding, and the driving member 4 cooperates with the puncturing member 3 to push the puncturing member 3 to rotate downward and cut the sealing sheet 5.

[0069] In the present utility model, a sealing piece 5 is provided at the bottom opening of the base 2, and a driving member 4 is provided inside the upper cover 1. The upper cover 1 is covered on the top of the base 2, so that a storage chamber 6 for accommodating materials is formed by enclosing between the inner wall of the top of the upper cover 1, the annular inner wall of the base 2 and the top surface of the sealing piece 5. That is, the internal space of the assembled packaging cover can all be used as the storage chamber 6 for accommodating materials. During the opening process, only need to screw the upper cover 1 to move it upward, and the driving member 4 is used to push the piercing member 3 located in the storage chamber 6 to rotate downward and cut the sealing piece 5. The materials in the storage chamber 6 can then pass through the bottom opening of the base 2 and the opening on the container body in sequence and fall into the container body. Only by screwing the upper cover 1 can the feeding of the materials be completed. The operation is simple and convenient, improving the use experience of consumers and being suitable for popularization and use;

[0070] In the present utility model, in the initial assembly state of the upper cover 1 and the base 2, the piercing member 3 is arranged at a special position. That is, in the vertical direction, the piercing member 3 is located between the inner wall of the top of the upper cover 1 and the sealing piece 5, and there is a first gap 7 between the top of the piercing member 3 and the inner wall of the top of the upper cover 1, and there is a second gap 8 between the bottom of the piercing member 3 and the top surface of the sealing piece 5. Thus, the space inside the piercing member 3 and the space outside the piercing member 3 in the storage chamber 6 can be connected through the first gap 7 and the second gap 8. Compared with the existing cover body, the space of the storage chamber 6 in the present application will not be limited due to the arrangement of the piercing member 3, so that the space inside the cover body can all be used to accommodate materials, and thus more materials can be accommodated, improving the use experience of consumers.

[0071] In an alternative embodiment of the present utility model, as Figure 2 、 Figure 3 shown, the piercing member 3 is a vertically arranged cylindrical shape with openings at both ends, and the driving member 4 is a vertically arranged cylindrical shape with an opening at the bottom. The top of the driving member 4 is sealingly connected to the inner wall of the top of the upper cover 1 (which can be integrally formed). The driving member 4 has a hollow part 402 communicating with the inside and the inside of the driving member. In the initial assembly state of the upper cover 1 and the base 2 (that is, the upper cover 1 has not been screwed and moved upward relative to the base 2), the piercing member 3 is located below the hollow part 402, so that above the piercing member 3, the space inside the piercing member 3 and the space outside the piercing member 3 in the storage chamber 6 are connected through the hollow part 402 and the first gap 7 in sequence.

[0072] In an alternative embodiment of the present utility model, as Figure 2 、 Figure 3As shown, cutting teeth 301 are provided at the bottom of the puncturing member 3. When the puncturing member 3 is in the initial assembled state (i.e., the puncturing member 3 has not started to rotate and move downward), there is a second gap 8 between the cutting teeth 301 and the top surface of the sealing piece 5. Below the puncturing member 3, the space inside the puncturing member 3 and the space outside the puncturing member 3 in the material storage chamber 6 can be communicated through the second gap 8.

[0073] In an alternative embodiment of the present utility model, as Figures 2 to 5 , Figure 8 , Figure 9 shown, a driving structure for driving the puncturing member 3 to rotate and move downward is provided between the driving member 4 and the puncturing member 3. Among them, the driving structure includes at least one driving post 401 provided on the outer wall of the driving member 4 and a driving track 302 provided on the inner wall of the puncturing member 3. When the upper cover 1 is in the state of being screwed and lifted, the upper edge of the driving track 302 abuts against the driving post 401. By rotating the upper cover 1, the driving member 4 and the driving post 401 are driven to rotate synchronously, so that the driving post 401 can slide upward along the driving track 302. During this process, the driving post 401 also applies an oblique thrust to the driving track 302, so that the puncturing member 3 rotates circumferentially while moving downward, so as to push the puncturing member 3 to rotate and move downward and cut the sealing piece 5 at a position close to the edge. Among them, the specific structure of the driving track 302 (such as the driving track 302 may include a first driving section, a second driving section and a termination limiting section) can refer to the structure of the driving track in the Chinese utility model patent (publication number: CN 217375577 U).

[0074] In this embodiment, as Figure 4 , Figure 5 shown, the driving post 401 extends vertically, and the length of the driving post 401 is equal to or close to the axial length of the driving member 4. By extending the length of the driving post 401, the driving range of the driving member 4 for the puncturing member 3 is increased, so that the axial length of the driving member 4 can be appropriately reduced, and then the range of the material storage chamber 6 occupied by the driving member 4 can be reduced, so that the material storage chamber 6 can accommodate more materials, which helps to solve the problem of limited storage space. Since the axial length of the driving member 4 is reduced, the axial length of the upper cover 1 for setting the driving member 4 can also be made shorter. While ensuring the normal use of the packaging cover and the normal opening of the sealing piece 5, less material is used for the upper cover 1, and the overall volume of the packaging cover can also be reduced, which has better economy.

[0075] Furthermore, the number of driving columns 401 is multiple, and the multiple driving columns 401 are spaced and evenly distributed along the circumferential direction of the driving member 4; the number of driving tracks 302 is multiple, and the multiple driving tracks 302 are spaced and evenly distributed along the circumferential direction of the puncturing member 3. The multiple driving columns 401 and the multiple driving tracks 302 correspond to each other one by one and are in alignment and cooperation. When the upper cover 1, the base 2, and the puncturing member 3 are in the assembled state, each driving column 401 abuts against the same-position part on the corresponding driving track 302. During the process of opening the sealing piece 5, each driving column 401 and the corresponding cooperating driving track 302 both play a driving role, thereby increasing the driving force of the puncturing member 3 and ensuring the balanced force on the puncturing member 3, so that the puncturing member 3 can rotate and move downward smoothly, ensuring the smooth opening of the sealing piece 5.

[0076] In an alternative embodiment of the present utility model, as Figure 8 , Figure 9 shown, the number of cutting teeth 301 is two, and the two cutting teeth 301 are arranged asymmetrically in the radial direction on the puncturing member 3 (that is: the angle between the two cutting teeth 301 and the axis connection line is not 180 degrees). Thus, when the sealing piece 5 is cut by the cutting teeth 301, there are some positions on the sealing piece 5 that are not cut. Therefore, when the sealing piece 5 is in the open state, the sealing piece 5 can still be connected to the base 2 and will not fall into the packaging container. Compared with only setting one cutting tooth 301, the two cutting teeth 301 have a larger cutting range when the puncturing member 3 rotates by the same angle, so that the sealing piece 5 can be opened without rotating the upper cover 1 significantly.

[0077] Furthermore, as Figure 2 , Figure 3 , Figure 7 , Figure 10 shown, a circular thin-wall area 501 is provided on the sealing piece 5 and near its annular outer edge. The thickness of the thin-wall area 501 is smaller than the thickness of the main body of the sealing piece 5. Vertically, the cutting tooth 301 is opposite to the thin-wall area 501, so that the cutting tooth 301 can smoothly pierce the thin-wall area 501 and cut and open the sealing piece 5 along the thin-wall area 501. Among them, the thin-wall area 501 includes a connected cutting section 5011 and a reserved section 5012. The cutting tooth 301 cuts the sealing piece 5 along the cutting section 5011, and the reserved section 5012 remains uncut.

[0078] Furthermore, as Figure 8 , Figure 9As shown, a retaining piece 303 is provided at the bottom of the puncturing member 3 and on at least one side of the cutting teeth 301. In the axial direction, the length of the retaining piece 303 is less than that of the cutting teeth 301. After the cutting teeth 301 cut through the sealing piece 5, the sealing piece 5 can be pushed downward and opened by the retaining piece 303, so as to ensure that the material in the storage chamber 6 can smoothly fall into the container body. Among them, when the puncturing member 3 is in the initial assembled state (that is, the puncturing member 3 has not started to rotate and move downward), at least part of the second gap 8 is located between the retaining piece 303 and the top surface of the sealing piece 5. Due to the length difference between the cutting teeth 301 and the retaining piece 303 in the axial direction, there must be a gap between the retaining piece 303 and the top surface of the sealing piece 5 before the cutting teeth 301 act on the sealing piece 5. This gap is at least part of the second gap 8, so that the space inside the puncturing member 3 in the storage chamber 6 can be communicated with the space outside the puncturing member 3 through the gap between the retaining piece 303 and the top surface of the sealing piece 5, so that the material can fill the entire storage chamber 6, avoiding the situation where the space of the storage chamber 6 is limited due to the setting of the puncturing member 3.

[0079] In an alternative embodiment of the present utility model, as Figures 2 to 4 , Figure 6 , Figure 7 shown, an internal thread 101 is provided along the circumferential direction on the inner wall of the upper cover 1, and an external thread 201 is provided along the circumferential direction on the outer wall of the base 2. The upper cover 1 is screwed and covered on the base 2 and is in threaded engagement through the internal thread 101 and the external thread 201.

[0080] Furthermore, as Figure 2 , Figure 3 , Figures 6 to 9 shown, a first guiding thread 304 is provided on the outer wall of the puncturing member 3, and a second guiding thread 202 that can be in threaded engagement with the first guiding thread 304 is provided on the inner wall of the base 2. The puncturing member 3 and the base 2 are in threaded engagement through the first guiding thread 304 and the second guiding thread 202. When the upper cover 1 is in the state of being screwed and lifted, the downward movement position of the puncturing member 3 can be guided and limited by the cooperation of the first guiding thread 304 and the second guiding thread 202, ensuring the smooth rotation and downward movement of the puncturing member 3.

[0081] Furthermore, the number of groups of the first guiding thread 304 and the second guiding thread 202 is greater than or equal to the number of groups of the internal thread 101 and the external thread 201. That is, one group of threads on the internal thread 101 and the external thread 201 corresponds to multiple groups of threads on the first guiding thread 304 and the second guiding thread 202. Furthermore, when the upper cover 1 travels a distance of one group of threads, the puncturing member 3 correspondingly travels multiple groups of threads, so as to ensure that for the upper cover 1, only a small number of turns need to be screwed to achieve a large downward movement of the puncturing member 3, ensuring that the puncturing member 3 can smoothly move downward to pierce the sealing piece 5.

[0082] In an alternative embodiment of the present utility model, as Figures 7 to 9 shown, a notch 3041 is provided on the first guiding thread 304, and a limiting block 2021 capable of being in limiting cooperation with the notch 3041 is provided on the second guiding thread 202. The limiting block 2021 can be embedded in the notch 3041 to limit the initial position of the puncturing member 3. Since the puncturing member 3 is screwed to the base 2, after assembly, the first guiding thread 304 of the puncturing member 3 cooperates with the second guiding thread 202 on the base 2 for screwing. Without a limiting structure, the puncturing member 3 can rotate and move along the threaded structure, which may cause the puncturing member 3 to be out of position, and there is a risk of piercing the sealing piece 5 and driving failure when the upper cover 1 is not unscrewed. However, the limiting structure formed by the cooperation of the notch 3041 and the limiting block 2021 can position the puncturing member 3 in the initial position, and the limiting block 2021 will be damaged when the upper cover 1 is unscrewed for the first time.

[0083] In an alternative embodiment of the present utility model, as Figures 1 to 3 , Figure 6 , Figure 7 , Figure 10 shown, an annular flange 203 is formed along the circumference at the edge of the bottom opening of the base 2. Below the flange 203, there is an annular inclined surface 204 extending obliquely away from the central axis from top to bottom. A plurality of ribs 205 for heat-sealing with the opening of the container body are provided on the annular inclined surface 204. When connecting the base 2 with the container body, the annular inclined surface 204 is in mating connection with the opening of the container body. When the container body uses a paper-based packaging material, the ribs 205 will be heated and melted to bond and fix with the paper-based packaging material, ensuring the bonding strength.

[0084] Among them, the setting of the flange 203 can not only improve the stability of the base 2, but also serve as a supporting and limiting structure for the anti-theft ring, limiting the anti-theft ring between the upper cover 1 and the flange 203. When the flange 203 is circular, the outer diameter of the flange 203 is greater than or equal to the outer diameter of the upper cover 1; when the flange 203 is rectangular, the width of the flange 203 is greater than or equal to the outer diameter of the upper cover 1.

[0085] In this embodiment, as Figure 11 shown, the outer diameter or width of the flange 203 is greater than 26 mm and less than 30 mm (i.e., 26 mm < b < 30 mm); the outer diameter of the base is greater than 24 mm and less than 30 mm (i.e., 24 mm < a < 30 mm).

[0086] As Figure 2 , Figure 3 , Figure 7As shown, an inverted structure 206 with an annular protrusion is formed along the circumferential direction on the bottom inner wall of the annular inclined surface. When assembling the base 2 and the container body, the inverted structure 206 can play a limiting role in the assembly of the base 2 and the container body.

[0087] In the present utility model, the base 2 is used to be bonded, flanged-bonded, snap-connected or screwed to the above-mentioned container body through a corner structure. Of course, other connection structures can also be adopted between the base 2 and the container body, which are not limited herein.

[0088] Among them, the base 2 and the container body are bonded through a corner structure, which folds the packaging material near the opening position on the container body to form a shape on the container body near the opening position that is adapted to the base 2, and then the base 2 and the container body are bonded, such as the connection structure in Chinese Patent (Grant Publication No.: CN 102673859 B).

[0089] Among them, the base 2 and the container body are bonded through a flanged platform. A certain corner is formed on the container body near the opening position, and the bottom of the base 2 has a connection structure or a flanged platform structure adapted to the corner, and the connection structure or the flanged platform structure of the base 2 is bonded to the position near the opening on the container body, such as the connection structure in Chinese Patent (Grant Publication No.: CN107735332 B).

[0090] Among them, the base 2 and the container body are snap-connected. A boss and a groove that are matched and snap-connected are respectively arranged on the container body near the opening position and the base 2, and the base 2 and the container body are connected through the cooperation of the boss and the groove.

[0091] Among them, the base 2 and the container body are screwed. Threaded structures that are matched are respectively arranged on the container body near the opening position and the base 2 to realize the screwing connection between the base 2 and the container body (such as a bottle).

[0092] In the present utility model, the sealing sheet 5 can be made of, but is not limited to, aluminum foil. Of course, the sealing sheet 5 can also be made of other materials that are easily pierced, which are not limited herein.

[0093] In the present utility model, the material contained in the storage chamber 6 can be, but is not limited to, fillers such as solid powders, solid granules, concentrated liquids, etc.

[0094] The features and advantages of the fresh-keeping packaging cap of the present utility model are:

[0095] 1. There is a storage chamber 6 formed inside the fresh-keeping packaging lid for storing materials separately. Only by screwing the upper lid 1 upward, the driving part 4 inside the upper lid 1 cooperates with the driving track 302 formed on the puncturing part 3 to drive the puncturing part 3 to rotate circumferentially and move downward at the same time, so as to cut the sealing piece 5 at the bottom of the base 2. The materials in the storage chamber 6 can then pass through the bottom opening of the base 2 and the opening on the container body in sequence and fall into the container body. Only by screwing the upper lid 1 can the material be put in, and the operation is simple and convenient, improving the use experience of consumers.

[0096] 2. In this fresh-keeping packaging lid, the puncturing part 3 is located between the top inner wall of the upper lid 1 and the sealing piece 5, and there is a first gap 7 between the top of the puncturing part 3 and the top inner wall of the upper lid 1, and a second gap 8 between the bottom of the puncturing part 3 and the top surface of the sealing piece 5. Thus, the space inside the puncturing part 3 in the storage chamber 6 can be connected to the space outside the puncturing part 3 through the first gap 7 and the second gap 8, so that the storage chamber 6 formed by enclosing between the top inner wall of the upper lid 1, the annular inner wall of the base 2 and the top surface of the sealing piece 5 can be used to hold materials. The space of the storage chamber 6 will not be limited by the setting of the puncturing part 3, enabling the fresh-keeping packaging lid of this application to hold more materials and helping to improve the use experience of consumers.

[0097] 3. This fresh-keeping packaging lid can store solid, semi-solid or liquid substances, and can realize the function of piercing the sealing piece when assembled with other packages. Through external addition technology, it perfectly solves the problem of adding high-temperature-labile or easily inactivated raw materials in the aseptic packaging of liquid milk products, improves the product value, and provides a diversified packaging application technical solution to maximize the value of functional additives.

[0098] Embodiment 2

[0099] The present utility model provides a packaging container, which includes a container body and the above-mentioned fresh-keeping packaging lid, and the fresh-keeping packaging lid is covered on the opening of the container body.

[0100] In an optional embodiment of the present utility model, the bottom of the base 2 of the fresh-keeping packaging lid is bonded to the outer wall near the opening of the container body. Among them, the bonding method can be, but is not limited to, bonding through a folded corner structure, a flange platform bonding, etc. Of course, other connection methods such as snap connection and screw connection can also be used for fixation, which will not be specifically limited here.

[0101] The container body in the present utility model can be, but is not limited to, containers for holding beverages such as bottles (such as HDPE bottles, PET bottles), cups (such as plastic cups), boxes (such as paper-based packaging boxes), etc. The sealing piece 5 can be opened by the puncturing part 3 on the fresh-keeping packaging lid.

[0102] It should be noted that in the description of the present application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects, and there is no sequence between them, nor can they be construed as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0103] The above-described embodiments in this specification are all described in a progressive manner. For the same or similar parts between the embodiments, reference can be made to each other, and each embodiment focuses on the differences from other embodiments.

[0104] The above are only several embodiments of the present utility model. Although the disclosed embodiments of the present utility model are as above, the content is only an embodiment adopted for the convenience of understanding the present utility model and is not used to limit the present utility model. Any person skilled in the art of the present utility model can make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed by the present utility model. However, the scope of patent protection of the present utility model shall still be subject to the scope defined by the appended claims.

Claims

1. A fresh-keeping packaging cover, which is used to be arranged at the opening of a container body, characterized in that: The fresh-keeping packaging cover comprises: An upper cover, the upper cover is in the shape of a cylinder with a sealed top and an open bottom, and a driving member is arranged inside the upper cover; A base, the base is in the shape of a cylinder with an opening at the top and the bottom, a sealing sheet is provided at the bottom opening of the base, and the upper cover is provided on the top of the base to enclose a material storage chamber for accommodating materials between the top inner wall of the upper cover, the annular inner wall of the base and the top surface of the sealing sheet; A piercing member, the piercing member is located in the material storage chamber, and the piercing member is sleeved on the outer periphery of the driving member so as to be movable up and down and rotatable in the circumferential direction; When the upper cover and the base are in an initial assembly state, in the vertical direction, the piercing member is located between the top inner wall of the upper cover and the sealing sheet, and a first gap is provided between the top of the piercing member and the top inner wall of the upper cover, and a second gap is provided between the bottom of the piercing member and the top surface of the sealing sheet, and the space inside the piercing member and the space outside the piercing member in the material storage chamber are connected through the first gap and the second gap; When the upper cover is in a screwed upward state, the driving member pushes the piercing member to rotate downward and cut the sealing sheet.

2. The fresh-keeping packaging cover according to claim 1, characterized in that: The piercing member is vertically arranged in a cylindrical shape with openings at both ends, the driving member is vertically arranged in a cylindrical shape, the top of the driving member is sealed and connected to the inner wall of the upper cover, the bottom of the driving member is open, and the driving member has a hollow portion connecting the inner side of the driving member and the inner side thereof, and when the upper cover and the base are in an initial assembly state, the piercing member is located below the hollow portion, so that above the piercing member, the space inside the piercing member in the storage chamber is connected with the space outside the piercing member through the hollow portion and the first gap in sequence.

3. The fresh-keeping packaging cover according to claim 1 or 2, characterized in that: A cutting tooth is provided at the bottom of the piercing member, and when the piercing member is in an initial assembly state, a second gap is provided between the cutting tooth and the top surface of the sealing sheet, so that the space inside the piercing member in the storage chamber is connected with the space outside the piercing member through the second gap below the piercing member.

4. The fresh-keeping packaging cover according to claim 3, characterized in that: A driving structure for driving the piercing member to rotate and move downward is provided between the driving member and the piercing member, the driving structure comprising at least one driving column provided on the outer wall of the driving member and a driving track provided on the inner wall of the piercing member, the upper cover is in a screwed upward state, the driving track abuts against the driving column and pushes the driving column to slide from bottom to top along the driving track, so as to push the piercing member to rotate and move downward.

5. The fresh-keeping packaging cover according to claim 4, characterized in that: The driving column extends vertically, and the length of the driving column is equal to or close to the axial length of the driving member.

6. The fresh-keeping packaging cover according to claim 4 or 5, characterized in that: There are multiple drive columns, and the multiple drive columns are distributed at intervals along the circumference of the drive member; There are multiple drive tracks, which are spaced apart along the circumference of the piercing member, and the drive posts correspond to the drive tracks one by one and are aligned with each other.

7. The fresh-keeping packaging cover according to claim 4, characterized in that: The number of the cutting teeth is two, and the two cutting teeth are arranged on the piercing member in a non-radially symmetrical manner.

8. The fresh-keeping packaging cover according to claim 4 or 7, characterized in that: A blocking sheet is provided at the bottom of the piercing member and at least on one side of the cutting teeth, so as to push the sealing sheet to open downward after the cutting teeth cut the sealing sheet; When the piercing member is in an initial assembly state, at least a portion of the second gap is located between the blocking sheet and the top surface of the sealing sheet.

9. The fresh-keeping packaging cover according to claim 7, characterized in that: An annular thin-walled area is provided on the sealing sheet and near its annular outer edge, the thickness of the thin-walled area is less than the thickness of the sealing sheet body, and in the vertical direction, the cutting teeth are opposite to the thin-walled area; The thin-walled area includes a connected cutting section and a retaining section, and the cutting teeth cut the sealing sheet along the cutting section.

10. The fresh-keeping packaging cover according to claim 1, characterized in that: An inner wall of the upper cover and an outer wall of the base are provided with an inner thread and an outer thread which are screwed together.

11. The fresh-keeping packaging cover according to claim 10, characterized in that: The outer wall of the piercing member is provided with a first guide thread, the inner wall of the base is provided with a second guide thread, and the piercing member and the base are screwed together through the first guide thread and the second guide thread; The number of groups of the first guide thread and the second guide thread is greater than or equal to the number of groups of the internal thread and the external thread.

12. The fresh-keeping packaging cover according to claim 11, characterized in that: The first guide thread and the second guide thread are provided with matching limiting notches and limiting blocks, and the limiting blocks can be embedded in the notches to limit the initial position of the piercing member.

13. The fresh-keeping packaging cover according to claim 11, characterized in that: An annular flange is formed at the bottom of the base along its circumference, and the outer diameter or width of the flange is greater than or equal to the outer diameter of the upper cover.

14. The fresh-keeping packaging cover according to claim 13, characterized in that: The outer diameter or width of the flange is greater than 26 mm and less than 30 mm; the outer diameter of the base is greater than 24 mm and less than 30 mm.

15. The fresh-keeping packaging cover according to claim 13, characterized in that: The flange has an annular inclined surface below, which extends obliquely from top to bottom away from the central axis. The annular inclined surface is provided with a plurality of convex ribs for heat sealing with the opening of the container body.

16. The fresh-keeping packaging cover according to claim 13, characterized in that: A raised undercut structure is formed on the inner wall of the bottom of the annular slope.

17. The fresh-keeping packaging cover according to claim 1, characterized in that: The base is used to be bonded to the container body through an angle structure, a flange, a snap connection or a threaded connection.

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