CN117184644A

CN117184644A - Safety cover and suction nozzle assembly thereof

Info

Publication number: CN117184644A
Application number: CN202311171636.8A
Authority: CN
Inventors: 陈苏年
Original assignee: GUANGZHOU AIYANG PLASTIC INDUSTRY CO LTD
Current assignee: GUANGZHOU AIYANG PLASTIC INDUSTRY CO LTD
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2023-12-08

Abstract

The invention discloses a safety cover, which comprises a sealing cover body and a wall expansion, wherein the wall expansion is arranged around the sealing cover body, the wall expansion is connected to the periphery of the sealing cover body through a hollow structure, and an axial air passage is formed between the sealing cover body and the wall expansion; the expanding wall is provided with at least one opening penetrating through the side part of the expanding wall to form a radial air passage, the opening extends to penetrate through one end of the expanding wall, which is close to the container, and at least one deformable connecting wire harness is arranged in the opening; the first end of the connecting wire harness is positioned at any position inside the outer surface of the expanding wall, the second end of the connecting wire harness extends downwards to be directly or indirectly bound to Shu Huan, and the wire harness ring is rotatably connected to the container; the connecting wire harness does not exceed the outer side of the expansion wall; the triple safety insurance is formed through ingenious structural design, the choking suture line is maximally avoided, and meanwhile, the connecting wire harness and the harness ring are arranged, so that the triple safety insurance is convenient to recycle; the invention also discloses a suction nozzle assembly comprising the safety cover, which is suitable for flexible packaging containers.

Description

Safety cover and suction nozzle assembly thereof

Technical Field

The invention belongs to the technical field of packaging, and particularly relates to a safety cover and a suction nozzle assembly thereof.

Background

The drinking port or the discharging port of the packaging container is provided with a sealing cover which can be repeatedly assembled and disassembled so as to avoid the content from being poured and polluted, and meanwhile, the cleanness and the sanitation of the drinking port or the discharging port are ensured.

However, in the field of children products, in particular children foods, there is a safety hazard in the case of small-sized and individually arranged sealing covers. Children generally show strong interest in colorful food packaging, play is repeatedly performed within a period of time, particularly, fine things can be shown in a detail sensitive period, a mouth feeling period, a long tooth period and the like, the small-volume objects which can be taken can be tried to be plugged into the mouth, the things can be directly explored and perceived by smell and taste, the small-volume sealing cover which can be completely separated from the packaging container is extremely easy to draw attention of the children, and further, the children can easily be plugged into the mouth to swallow during playing, choking is caused, life is endangered, and a large potential safety hazard exists.

On the other hand, along with increasing importance of people on environmental problems, environmental protection concepts and sustainable development are being widely advocated and applied, and sealing covers which can be completely separated from packaging containers are easily discarded independently and randomly, so that the sealing covers and the packaging containers are difficult to recycle together, and the problems of resource waste and environmental pollution exist.

In order to solve the above-mentioned problem, patent document with application number CN201020205935.0 discloses a novel bottle lid that can link with plastic bottle such as mineral water bottle, beverage bottle, and the bottle lid includes bottle lid upper portion, bottle lid lower part, at least two tie points of easily tearing and the connecting rib of connecting bottle lid upper portion and bottle lid lower part, and wherein the bottle lid lower part sets up in the bottleneck department snap ring below of body, bottle lid upper portion and bottleneck threaded connection, and can tear tie point and break away from bottle lid lower part and bottleneck, still link as an organic wholely with the body through the connecting rib after bottle lid upper portion breaks away from with the bottleneck.

Above-mentioned prior art makes the bottle lid after the unsealing still keep in touch with the body through increasing the connecting rib, can avoid the bottle lid to be abandoned alone, is favorable to recycle, and simultaneously, child even put into the mouth with the bottle lid and also unable swallow, can avoid basically swallowing the potential safety hazard that leads to stifling.

However, the connecting rib in the prior art is bent in a C shape and protrudes outwards from the bottle mouth, and the following defects exist:

1. the product design not only considers the application scene of the final user, but also needs to combine production equipment, process, flow and the like, and how to reduce the production cost, improve the production efficiency and the like are considered.

The bottle lid relates to procedures such as multichannel screening, transportation in the current ripe production water line, including transporting a large amount of bottle lids to the vibration dish, by vibration dish transportation, screening with unified bottle lid's orientation, make things convenient for follow-up gripper to snatch, gripper snatch the bottle lid and install to packaging container, the structure and the parameter design of whole production water line are all to the bottle lid size without evagination structure and precision design promptly, add the external connection muscle of evagination and can change the peripheral size and the focus etc. of bottle lid, original production water line need carry out a large amount of changes and debugs just can adapt to the bottle lid that has evagination connection muscle, the cost is high.

The influence of the convex connecting ribs on the production line comprises, but is not limited to, the following scenes:

firstly, the width of a transportation track on the vibration disc at the back is set according to the peripheral size of a single bottle cap, the bottle caps are combed into a single row of transportation in tight arrangement on the track, the arrangement density and the transportation stability of a sealing cover on the vibration disc track can be influenced by adding a convex connecting rib, the whole cap arranging assembly line is required to be redesigned and debugged aiming at the convex connecting rib, and the cost is extremely high;

secondly, when passing through the screening station of the vibration disc, the convex connecting ribs can lead part of bottle caps facing the correct direction to be screened out of the conveying track and transported into the vibration disc again, so that the screening accuracy and the production efficiency are affected;

finally, the connecting ribs protruding outwards to form C shapes are easy to interfere with the movement, grabbing and cap screwing of the follow-up mechanical claws, for example, the cap screwing interval designed originally needs to be obviously increased, and cap screwing stations between adjacent positions can not interfere with each other.

As can be seen from the above simple examples, the bottle cap is only provided with the convex connecting ribs, but the related devices such as the cap grabbing assembly line, the cap screwing assembly line and the like are required to be changed or debugged.

2. The convex connecting ribs are easy to scratch and pull by external force in the process of finished product packaging, transportation, putting on a rack and the like, and can cause the problems of scratch, burr, fracture and the like, thereby influencing the product packaging quality, in particular the appearance packaging quality.

3. The design connecting rib can basically avoid the risk of swallowing choking, but basically only has a heavy safety insurance, unexpected conditions (such as strong pulling, pet biting and the like) can possibly occur in the repeated playing process of a child to lead to the breakage of the connecting rib, so that the bottle cap can be completely separated from the bottle body, and the risk of swallowing choking occurs again.

Disclosure of Invention

The present invention provides a safety cover and a suction nozzle assembly thereof, which solve the above-mentioned problems of the prior art.

The technical scheme of the invention is realized as follows:

the safety cover comprises a sealing cover body and a wall expansion body which are integrally formed, wherein the sealing cover body is rotatably installed at an opening of a container and seals the opening of the container, the wall expansion body is arranged around the sealing cover body, the wall expansion body is connected to the periphery of the sealing cover body through a hollow structure, and an axial air passage is formed between the sealing cover body and the wall expansion body;

The expansion wall is provided with at least one opening penetrating through the side part of the expansion wall to form a radial air passage, the opening extends to penetrate through one end of the expansion wall, which is close to the container, and at least one deformable connecting wire harness made of the same material is arranged in the opening;

the first end of the connecting wire harness is positioned at any position inside the outer surface of the expanding wall, the second end of the connecting wire harness extends downwards and is directly or indirectly bound to a wire harness ring, and the wire harness ring is rotationally connected to the container;

the connecting wire harness does not exceed the outer side of the expanding wall;

when the expanding wall is pinched, rotated and unsealed, the beam ring connected to the container is rotated to enable the connecting wire harness to rotate along with the expanding wall; when the sealing cover body is unscrewed from the container, the binding ring is still rotationally connected to the container, and the sealing cover body and the expanding wall are kept connected through the connecting wire harness.

Preferably, the first end of the connecting wire harness is formed by protruding a top wall or a side wall of the opening toward the inside of the opening, and the connecting wire harness does not exceed the inner side of the expanding wall;

the connecting wire harness is arranged close to the inner side of the expanding wall, and the inner side surface of the connecting wire harness is flush or basically flush with the inner side surface of the expanding wall.

Preferably, a bending structure is arranged at the position of the connecting wire harness in the opening, and a first breakpoint connection structure is arranged between the bending structure and the top wall and/or the side wall of the opening;

the part of the connecting wire harness in the opening is provided with a plurality of U-shaped bends connected end to end, and the U-shaped bends are arranged along the axial direction of the safety cover;

the U-shaped bend is provided with two straight line sections and a bending section for connecting the two straight line sections, and a first breakpoint connection structure is arranged between the bending section and the side wall of the opening;

the connecting part of the straight line section and the bending section is provided with a turning part, the width of the connecting wire harness is gradually reduced when the connecting wire harness is close to the turning part, and the width of the connecting wire harness is gradually increased when the connecting wire harness is far away from the turning part;

the first breakpoint connection structure comprises a plurality of frangible tabs, and the thickness of the frangible tabs is gradually reduced from the wall of the opening to the direction of connecting the wire harness;

and an injection molding end seat with the size larger than that of the frangible tab is further arranged between the frangible tab and the wall surface of the opening.

Preferably, the structure of the expansion wall corresponding to the top of the opening is an elastic strip part capable of being elastically deformed;

when a user grasps the expanded wall to unseal, the expanded wall provided with the elastic strip part is slightly deformed, and the left side wall and the right side wall of the opening are simultaneously pressed towards the connecting wire harness;

The outer wall structure of expanding the wall is a plurality of anti-skidding sand grip that encircle center pin circumference array, single anti-skidding sand grip extends along the axial and sets up, the outward flange of anti-skidding sand grip is the circular arc design, and is a plurality of the bottom of anti-skidding sand grip is equipped with C type bottom, all are connected simultaneously to C type bottom anti-skidding sand grip.

Preferably, the hollowed-out structure is a plurality of arc-shaped sheets, the arc-shaped sheets are uniformly distributed around the sealing cover body, a main positioning point is arranged in the center of the top surface of the sealing cover body, two auxiliary positioning points are symmetrically arranged on two sides of the main positioning point, and the auxiliary positioning points correspond to the middle part of a space between the two arc-shaped sheets;

the single arc-shaped sheets are arranged along the axial direction of the sealing cover body, and a plurality of arc-shaped sheets are bent and protruded towards the screwing direction.

Preferably, a second breakpoint connection structure is arranged between the sealing cover body and the binding ring;

the second breakpoint connection structure comprises a plurality of unsealing and sealing columns, and the thickness of the unsealing and sealing columns near the sealing cover body is gradually reduced;

at least two sets of twisting teeth distributed along the circumferential direction are arranged between the bundle ring and the sealing cover body, each set of twisting teeth comprises an upper twisting tooth and a lower twisting tooth which are arranged in a staggered mode along the circumferential direction, the upper twisting teeth are formed by downward protruding of the bottom end of the sealing cover body, the lower twisting teeth are formed by upward protruding of the top end of the bundle ring, and the axial end parts of the upper twisting teeth and/or the lower twisting teeth are provided with unsealing posts.

A suction nozzle assembly suitable for flexible packaging container, comprising a nozzle piece and the safety cover;

the pipe orifice piece is fixedly arranged in the flexible packaging container, part of the pipe orifice piece is wrapped and fixed in the flexible packaging container, and the other part of the pipe orifice piece is exposed out of the flexible packaging container and screwed with the safety cover;

the sealing cover body is provided with a first screwing structure, the pipe orifice piece is provided with a second screwing structure, the first screwing structure is matched with the second screwing structure, the sealing cover body is screwed on the pipe orifice piece, and the sealing cover body covers and seals a discharge hole of the pipe orifice piece;

the pipe orifice piece is provided with an axial gap for the collar to axially move, and the collar is rotationally sleeved in the axial gap;

the safety cover is provided with at least one upper sliding seat at a position lower than the lower end of the first screwing structure, and the pipe orifice piece is provided with at least one lower sliding seat at a position lower than the lower end of the second screwing structure;

when the sealing cap is not unsealed, the sealing cap body is screwed on the pipe orifice piece, and the upper sliding seat and the lower sliding seat are staggered and intersected along the peripheral direction of the pipe orifice piece.

Preferably, the sealing cover screwed on the pipe orifice piece has a certain movable space along the axial direction of the pipe orifice piece;

The lower sliding seat and the second screwing structure are not overlapped in the axial direction of the pipe orifice piece, and the lower sliding seat is positioned at the outer side of the second screwing structure; correspondingly, the upper sliding seat and the first screwing structure are not overlapped in the axial direction of the safety cover, and the upper sliding seat is positioned at the outer side of the first screwing structure;

the lower edge of the outer side wall of the sealing cover body protrudes towards the outer circumferential direction to form a circumferential annular bulge, and the upper sliding seat is formed by downwards protruding the bottom surface of the circumferential annular bulge;

the outer side wall of the pipe orifice piece protrudes outwards to form an upper annular protruding part and a lower annular protruding part which are distributed up and down, and the axial gap is formed between the upper annular protruding part and the lower annular protruding part; the top surface of the upper ring protruding part protrudes upwards to form the lower sliding seat;

the inner side wall of the sealing cover body is provided with at least one section of internal convex thread protruding towards the central axis direction of the sealing cover body, and the internal convex thread is used as the first screwing structure; the outer side wall of the pipe orifice piece is provided with at least one section of outer convex screw thread protruding towards the central axis direction of the pipe orifice piece, and the outer convex screw thread is used as the second screwing structure; the internal convex thread is matched with the external convex thread;

a blocking block is filled between the lower end part of the male screw thread and the side wall of the lower sliding seat, the blocking block is positioned on the circumferential movable track of the female screw thread on the outer side of the pipe orifice piece, and the end part of the female screw thread cannot pass through the blocking block;

The upper sliding seat is provided with at least two sliding seats and is uniformly distributed along the circumference of the side wall of the safety cover; the lower sliding seat is provided with at least two corresponding to the upper sliding seat, and the lower sliding seats are uniformly distributed along the circumference of the side wall of the pipe orifice piece;

the side surfaces of the upper sliding seat and the lower sliding seat, which are in contact friction with each other, are arranged in an inclined manner and are respectively provided with an upper guide inclined plane and a lower guide inclined plane; the other side surface of the upper sliding seat, which is opposite to the upper guide inclined surface, is provided with an upper blocking straight surface, the other side surface of the lower sliding seat, which is opposite to the lower guide inclined surface, is provided with a lower blocking straight surface, and the lower blocking straight surface prevents the upper sliding seat from passing through.

Preferably, the sealing cover body is of a four-section cylinder structure, and comprises a first cylinder body, a second cylinder body, a third cylinder body and a fourth cylinder body which are sequentially connected from top to bottom, wherein the inner cylinder diameters of the first cylinder body, the second cylinder body, the third cylinder body and the fourth cylinder body are gradually enlarged;

the top of the first cylinder is closed, the bottom of the first cylinder is open and is connected with the second cylinder, the closed top surface of the first cylinder protrudes towards the inside of the cylinder to form an inner clamping ring wall, the outer diameter of the inner clamping ring wall is matched with the inner diameter of a discharge hole of the pipe orifice piece, the diameter of the inner side wall of the first cylinder is matched with the outer diameter of the discharge hole of the pipe orifice piece, and the inner side wall of the first cylinder and the inner clamping ring wall jointly clamp the inner side wall and the outer side wall of the discharge hole of the pipe orifice piece;

The closed top surface of the first cylinder body also protrudes towards the inside of the cylinder body to form a tip end ring, the tip end ring is arranged between the inner clamping annular wall and the inner side wall of the first cylinder body, and the tip end of the tip end ring tightly abuts against the top end of the discharge hole of the pipe orifice piece;

the inner side wall of the second cylinder body protrudes towards the central shaft direction of the second cylinder body to form the outer convex thread, and the outer convex thread does not exceed the inner side wall of the first cylinder body;

the outer convex thread is provided with two sections, and the two sections of the outer convex threads are centrosymmetric with respect to the central shaft of the second cylinder; correspondingly, the outer side wall of the pipe orifice piece also protrudes towards the peripheral direction to form two sections of male threads, and the two sections of male threads are matched with the inner male threads;

the two upper sliding seats are arranged in the third cylinder body and are centrally symmetrical relative to the central shaft of the third cylinder body; the inside of the third cylinder is also provided with a plurality of reinforcing blocks, the reinforcing blocks and the two upper sliding seats are uniformly distributed in the circumference, the reinforcing blocks and the upper sliding seats do not exceed the inner side wall of the second cylinder, the influence on the screwing of the second cylinder is avoided, and the reinforcing blocks and the upper sliding seats are clamped on the top surface of the upper ring protruding part;

The safety cover is arranged on the suction nozzle, the lower sliding seat is positioned between the upper sliding seat and the reinforcing block, and the lower guide inclined surface is opposite to the upper guide inclined surface; the reinforcing block cannot pass through the lower blocking straight surface;

the upper part of the wall of the fourth cylinder is hollowed at intervals to form a second breakpoint connection structure, and the lower part of the wall of the fourth cylinder is provided with the binding ring;

the inner diameter of the fourth cylinder body is larger than the outer diameter of the upper ring protruding part, the inner side wall of the binding ring protrudes towards the central shaft to form a plurality of clamping blocks, and the clamping blocks are clamped in the axial gaps.

Preferably, the outer side of the upper ring protrusion is provided as a ring slope inclined outwardly and downwardly from the central axis of the nozzle member; the bottom surface of the clamping block is an inclined surface which is outwards and downwards inclined from the central shaft of the sealing cover body and is matched with the annular inclined surface;

the top surface of the clamping block is parallel or basically parallel to the bottom surface of the upper ring protruding part;

the top surface of the lower ring protruding part protrudes upwards to form at least two symmetrical anti-deformation protruding blocks, the anti-deformation protruding blocks are circumferentially distributed and located on the inner side of the binding ring, and the anti-deformation protruding blocks do not obstruct rotation of the binding ring;

the single deformation-preventing lug is positioned between the two clamping blocks, and when the safety cover is not rotated by force, the rotation of the clamping blocks is limited by the deformation-preventing lug;

The outer side of the pipe orifice piece is provided with a limiting substrate in parallel below the lower ring protruding part, and the bottom surface of the limiting substrate is contacted with the opening edge of the flexible packaging container;

the clamping neck groove is formed between the limiting substrate and the lower ring protruding part, a press patch part is arranged below the limiting substrate, and the surface of the press patch part is provided with protruding stripes.

The invention has the beneficial effects that:

firstly, the connecting wire harness is arranged to enable the unsealed safety cover to be connected with the container, so that the child is prevented from eating by mistake, the safety cover is a first safety insurance, and meanwhile, the sealing cover body is prevented from being discarded independently, so that the safety cover is convenient to recycle;

secondly, considering that even if the connecting harness is connected, the connecting harness is possibly broken due to unexpected conditions (such as being forcibly torn off in the process of repeatedly playing by a child, etc.), and the invention is completely separated from the container, the invention is further provided with the wall expansion which can effectively enlarge the volume of the invention, the size standard of the wall expansion is far larger than that of the respiratory tract of a common child, and even if the child eats the connecting harness broken by mistake into the mouth, the connecting harness cannot be swallowed into the respiratory tract due to the overlarge volume, so that the choking risk is avoided, and the wall expansion is designed for the object of the invention which cannot be swallowed, and is a second safety insurance;

Further, considering that older children, teenagers or pets may swallow the present invention by mistake in certain unexpected situations, the present invention is further provided with the axial air passage and the radial air passage for air to pass through, in extreme situations, even if the present invention is swallowed by mistake, the breath can be maintained until the miseating object is hospitalized, the choking risk is avoided, and the present invention is designed for the object capable of swallowing the present invention, which is a third triple safety insurance;

finally, the connecting wire harness is 'side hidden', namely, the connecting wire harness does not exceed the outer side of the expanding wall, namely, the peripheral size of the cover is basically unchanged, the original production line can basically continue to be used, the gap between the cover arranging production line and the An Gai is not required to be changed, the grabbing of mechanical claws is not influenced by an outward protruding structure, and the cost of producing a new product is effectively controlled; meanwhile, the 'side hidden' connecting wire harness is not easy to scratch, pull and the like outside in the processes of packaging, transporting, putting on a rack and the like, so that the connecting wire harness is prevented from being broken or generating scratches, burrs and the like, and the packaging quality of products is ensured.

Drawings

FIG. 1 is a schematic view of a safety cover according to the present invention;

FIG. 2 is a second schematic structural view of the safety cap of the present invention;

FIG. 3 is a third schematic view of the safety cap of the present invention;

FIG. 4 is a bottom view of the safety cover of the present invention;

FIG. 5 is a schematic view of a suction nozzle assembly according to the present invention;

FIG. 6 is an enlarged view at A of FIG. 5;

FIG. 7 is a second schematic diagram of a suction nozzle assembly according to the present invention;

FIG. 8 is an enlarged view at B of FIG. 7;

FIG. 9 is an unsealed schematic view of a nozzle assembly of the present invention;

FIG. 10 is a third schematic view (with parts broken away) of a suction nozzle assembly according to the present invention;

FIG. 11 is a schematic view of the orifice member of the present invention;

FIG. 12 is a cross-sectional view of a suction nozzle assembly of the present invention;

FIG. 13 is a fourth schematic structural view of the safety cap of the present invention;

FIG. 14 is a fifth schematic structural view of the safety cap of the present invention;

FIG. 15 is a sixth schematic structural view of the safety cap of the present invention;

fig. 16 is a seventh schematic structural view of the safety cap of the present invention.

Reference numerals

1. Sealing cover; 101. an upper slider; 101a, upper guide ramp; 101b, upper blocking straight surface; 102. an internal male thread; 103. a main positioning point; 104. auxiliary positioning points; 105. an inner clip ring wall; 106. a tip ring; 107. a reinforcing block; 108. the upper torsion teeth;

2. an arc-shaped sheet;

3. expanding the wall; 301. a spring strip part; 302. a C-shaped bottom; 303. an opening;

4. Connecting the wire harness; 401. a first end; 402. a second end; 403. a curved section; 403a, a steering section;

5. a first breakpoint connection structure; 501. a frangible tab; 502. injection molding of the end seat;

6. a collar; 601. a clamping block; 601a, inclined surface; 602. lower torsion teeth;

7. a second breakpoint connection structure; 701. opening the sealing column;

8. a nozzle member; 801. a lower slide; 801a, lower guide ramp; 801b, lower blocking straight face; 802. a male thread; 803. an upper ring protrusion; 804. a lower ring protrusion; 805. a block; 806. an anti-deformation bump; 807. limiting the substrate; 808. and a pressure patch part.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1

Referring to fig. 1 to 16, a safety cover comprises a sealing cover body 1 and a wall expansion 3 which are integrally formed, wherein the sealing cover body 1 is rotatably installed at an opening 303 of a container and seals the opening 303 of the container, the wall expansion 3 is arranged around the sealing cover body 1, the wall expansion 3 is connected to the periphery of the sealing cover body 1 through a hollow structure, and an axial air passage is formed between the sealing cover body 1 and the wall expansion 3.

The expansion wall 3 is provided with at least one opening 303 penetrating through the side part of the expansion wall 3 to form a radial air passage, the opening 303 extends to penetrate through one end of the expansion wall 3 close to the container, and at least one deformable connecting wire harness 4 made of the same material is arranged in the opening 303;

the first end 401 of the connecting harness 4 is located at any position inside the outer surface of the expanding wall 3;

since the present embodiment needs to be opened by rotation, in order to avoid the connection harness 4 being wound around the sealing cover 1 or the container opening 303 along with the unscrewing operation, and also in order to avoid the connection harness 4 being designed to hinder the unscrewing operation, the second end 402 of the connection harness 4 extends downward to be directly or indirectly tied to the collar 6, and the collar 6 is rotatably connected to the container;

the connection harness 4 does not protrude outside the expanded wall 3.

When the expanding wall 3 is pinched and rotated to unseal, the bundle ring 6 connected to the container is rotated to enable the connecting wire bundle 4 to rotate along with the expanding wall 3, so that the blocking of the design of the connecting wire bundle 4 to the unsealing operation is avoided; when the sealing cover 1 is unscrewed from the container, the collar 6 remains rotatably connected to the container and remains connected to the sealing cover 1 and the expansion wall 3 via the connection harness 4.

Firstly, the connecting wire harness 4 is arranged to enable the unsealed safety cover and the container to be connected, so that the child is prevented from eating by mistake, the first safety insurance is realized, the sealing cover body 1 is prevented from being discarded independently, and the recycling is facilitated;

secondly, considering that even if the connection harness 4 is provided, the connection harness 4 may be broken (for example, the connection harness 4 is forcibly torn off in the process of repeatedly playing by a child, etc.) due to the accident, and thus the embodiment is completely separated from the container, the embodiment is further provided with the expansion wall 3, the volume of the embodiment can be effectively enlarged by the expansion wall 3, the size standard of the expansion wall 3 is far larger than that of the respiratory tract of a common child, and even if the child breaks the connection harness 4, the connection harness 4 can not be swallowed into the respiratory tract due to the overlarge volume, so that the choking risk is avoided, and the embodiment is designed for the object incapable of swallowing the embodiment, and is a second safety;

Further, considering that older children, teenagers or pets may swallow the embodiment by mistake in some unexpected situations, the embodiment is further provided with the axial air passage and the radial air passage for air to pass through, and in extreme cases, even if the embodiment is swallowed by mistake, the breath can be maintained until the person eating the infant is hospitalized, so that the suffocation risk is avoided, and the embodiment is designed for the person capable of swallowing the embodiment, which is a third safety insurance;

finally, the connection harness 4 in the embodiment is 'side hidden', namely, the connection harness does not exceed the outer side of the expansion wall 3, namely, the peripheral size of the cover is basically unchanged, the original production line can basically continue to be used, the gap between the cover arranging production line and the An Gai is not required to be changed, the grabbing of mechanical claws is not influenced by the protruding structure, and the cost of producing a new product is effectively controlled; meanwhile, the 'side hidden' connecting wire harness 4 is not easily scratched, pulled and the like outside in the processes of packaging, transporting, putting on a rack and the like, so that the connecting wire harness 4 is prevented from being broken or generating scratches, burrs and the like, and the packaging quality of products is ensured.

It should be noted that, the cover similar to the outer peripheral dimension of the expanded wall 3 is originally produced by the production line of the applicant, so the design of the "side hidden" connection harness 4 enables the original production line to continue production, but the core design of the "side hidden" connection harness 4 of the embodiment is also applicable to other types of bottle caps, and the production line originally used for producing the bottle caps without the connection harness 4 can be basically not changed.

In practical production, the gripper needs to extend into the axial air passage to grasp the embodiment, so the first end 401 of the connection harness 4 is formed by protruding the top wall or the side wall of the opening 303 toward the inside of the opening 303, and the connection harness 4 does not exceed the inner side of the expansion wall 3, so as to avoid interference with grasping of the gripper.

The connecting harness 4 may be in a linear structure in the opening 303 until being connected with the container (as shown in fig. 16), but preferably, a bending structure is arranged at a position of the connecting harness 4 in the opening 303, so that after the embodiment is unsealed, the connecting harness 4 is deformed and stretched to make the embodiment be far away from the opening 303 of the container as far as possible, so as to avoid being contaminated with the content of the container, or to interfere with and scratch the lips or facial skin of the user when the user drinks.

The connecting harness 4 is freely bent in the opening 303, the shape is not particularly limited, and in order to enable a purchaser to intuitively judge whether the product is opened, a first break point connecting structure 5 is arranged between the bending structure and the top wall and/or the side wall of the opening 303, and the break point connecting structure also has the function of restraining and maintaining the shape of the connecting harness 4 before opening.

Specific designs of the curved structure and the first break point connection structure include, but are not limited to, those shown in fig. 13-16.

Specifically, the connection harness 4 of the present embodiment has a plurality of (3) U-bends (as shown in fig. 1) connected end to end at the location in the opening 303, and the plurality of U-bends are arranged along the axial direction of the safety cover, and the design has the advantages that: first, the length of the connection harness 4 is extended as much as possible within the opening 303 where space is limited; secondly, the regular U-shaped arrangement is convenient for die sinking production; and finally, after the design is stretched and deformed, the stress of each part is relatively uniform relative to other bending structures, no obvious stress concentration area exists, and the design is not easy to break.

The U-shaped bend has two straight sections and a bent section 403 connecting the two straight sections, and a first break point connection structure is arranged between the bent section 403 and the side wall of the opening 303.

More specifically, the first breakpoint connection structure includes a plurality of (3) frangible tabs 501, where the thickness of the frangible tabs 501 gradually decreases from the wall of the opening 303 toward the direction of the connection harness 4 (refer to fig. 8), so that the broken frangible tabs 501 remain on the wall of the opening 303 and are not easily touched, that is, the connection harness 4 is prevented from carrying the outwardly protruding frangible tabs 501 to scratch the skin of the user after being opened.

The size is slightly greater than the end seat 502 of moulding plastics of breakable connection piece 501 still is equipped with between the wall of breakable connection piece 501 and opening 303, corresponds the mould position width of breakable connection piece 501 extremely thin, and the thick liquids of moulding plastics are difficult for flowing into and are full of, set up on the mould and correspond the cell body structure of end seat 502 of moulding plastics is favorable to guiding the thick liquids inflow and is full of the mould position that breakable connection piece 501 corresponds.

In this embodiment, the structure of the expanded wall 3 corresponding to the top of the opening 303 is an elastic strip portion 301 that can be elastically deformed, that is, the bottom surface of the elastic strip portion 301 is the top wall of the opening 303, when the user grasps the expanded wall 3 to unseal, the expanded wall 3 provided with the elastic strip portion 301 is slightly deformed, and the left and right side walls of the opening 303 are simultaneously pressed towards the connection harness 4, so as to be favorable for breaking the frangible tab 501, so that the opening of this embodiment is convenient and quick.

The connection part between the straight line segment and the bending segment 403 is set as a turning part 403a, the width of the connecting wire harness 4 is gradually reduced when the connecting wire harness 4 is close to the turning part 403a, flexibility when the connecting wire harness 4 is deformed and stretched is guaranteed, the width of the connecting wire harness 4 is gradually increased when the connecting wire harness 4 is far away from the turning part 403a, and strength of the connecting wire harness 4 is guaranteed.

In this embodiment, referring to fig. 3, the connection harness 4 is disposed near the inner side of the expansion wall 3, and the inner side surface of the connection harness 4 is flush or substantially flush with the inner side surface of the expansion wall 3, so that when the connection harness 4 is twisted to be unsealed in this embodiment, the connection harness 4 tends to slide toward the inner side of the expansion wall 3, and is less likely to cause a pull on the connection harness 4 than the connection harness tends to slide toward the outer side of the expansion wall 3.

Considering that the first breakpoint connection structure connecting the connection harness 4 and the expansion wall 3 in the circumferential direction is relatively easy to break, in the product selling process, a product is opened in a few cases, so in this embodiment, the second breakpoint connection structure 7 is arranged between the sealing cover body 1 and the bundle ring 6 to solve the problem, and the second breakpoint connection structure 7 connecting the sealing cover body 1 and the bundle ring 6 in the axial direction is not easy to break even if the product is broken, so that whether the product is opened can be judged more accurately. The first breakpoint connection structure and the second breakpoint connection structure 7 are broken along with the grabbing, pressing, rotating and unsealing actions of a user.

Specifically, the second breakpoint connection structure 7 includes a plurality of unsealing columns 701, the unsealing columns 701 are distributed along the circumference of the bottom end of the sealing cover 1, and the thickness of the portion of the unsealing column 701, which is close to the sealing cover 1, is gradually reduced (refer to fig. 6), so that the ruptured unsealing column 701 remains in the collar 6 as much as possible, and is not easy to touch, i.e. the unsealing is avoided, the edge of the sealing cover 1 carries the unsealing column 701 protruding outwards to scratch the skin of the user.

In this embodiment, the sealing cover 1 is a circular cup-shaped structure with one end closed and one end open, the main body of the expanding wall 3 is a cylindrical structure with upper and lower openings, and the sealing cover 1 is disposed inside the expanding wall 3 and is coaxial with the expanding wall.

In this embodiment, the outer wall structure of expanding wall 3 is a plurality of anti-skidding sand grip that encircle center pin circumference array, single anti-skidding sand grip extends along the axial and sets up, makes the finger grasp when expanding wall 3 frictional force great, and it is firm to grasp, is difficult for skidding to make things convenient for the application of force to open this embodiment.

The outer edges of the anti-slip raised strips are all arc-shaped, have no sharp edge and corner structures, and can not scratch the inner wall of the oral cavity even if being plugged into the mouth by mistake, and also avoid scratching the delicate skin of young children.

Specifically, a plurality of the bottom of anti-skidding sand grip is equipped with C type bottom 302, all are connected simultaneously to C type bottom 302 anti-skidding sand grip, reinforcing anti-skidding sand grip's structural strength avoids colliding with easily and warp, influences the appearance quality of packing.

In this embodiment, the hollow-out structure is a plurality of (4) arc pieces 2, and is a plurality of arc pieces 2 encircle sealed lid 1 evenly distributed, sealed lid 1's top surface center is equipped with main setpoint 103, main setpoint 103's bilateral symmetry is equipped with two vice setpoint 104, vice setpoint 104 corresponds the space (axial air flue) middle part between two arc pieces 2, confirms through the three points the orientation of safety cover, makes the gripper can accurately stretch into from the top surface of safety cover and snatch, and the setting of vice setpoint 104 makes the manipulator can accurately stretch into the axial air flue and grasp again simultaneously, avoids the collision, again with this embodiment rotatory installation to mouth of pipe 8.

More specifically, the single arc piece 2 is arranged along the axial direction of the sealing cover body 1, a plurality of arc pieces 2 are bent and protruded towards the screwing direction, and when the mechanical claw is rotatably installed in the embodiment, the bent arc piece 2 can guide the mechanical claw to be basically stabilized in the middle of the arc piece 2, so that the mechanical claw is stably screwed.

Example 2

A suction nozzle assembly is applicable to flexible packaging containers and comprises a nozzle piece 8 and an embodiment 1, wherein the nozzle piece 8 is fixedly arranged on the flexible packaging container, a part of the nozzle piece 8 is wrapped and fixed on the inner part of the flexible packaging container, and the other part of the nozzle piece 8 is exposed on the outer part of the flexible packaging container and is screwed with a safety cover.

At present, the breakpoint connection mainly has two disconnection modes:

firstly, when pulling out the tube cap, the breakpoint connection is thinned firstly, then pulled out, and finally the tube cap is separated from the tube orifice piece 8, namely, the breakpoint connection is broken along the axial force application of the tube orifice piece 8, the disadvantage of the mode is that when pulling out the tube cap, the instant user with broken breakpoint connection is difficult to receive force in time, content is easy to spill, user experience is affected, if the size of the breakpoint connection is reduced in order to avoid the problem of spilling, the tube cap is possibly broken easily due to slight external force rubbing against the breakpoint connection in the packaging and transportation process, and further the misjudgment that the product is opened is caused.

Secondly, the break point connection is rotated by applying force along the peripheral direction of the nozzle member 8, but the torque force applied in the circumferential direction to break the break point connection needs to be larger, and the use experience is poor for users with smaller strength, and if the size of the break point connection is reduced to reduce the difficulty of opening the cover, the misjudgment that the product is opened may still be caused.

In this embodiment, the sealing cover 1 is provided with a first screwing structure, the pipe orifice piece 8 is provided with a second screwing structure, the first screwing structure is adapted to the second screwing structure, the sealing cover 1 is screwed to the pipe orifice piece 8, and the sealing cover 1 covers and seals a discharge hole of the pipe orifice piece 8;

the pipe orifice piece 8 is provided with an axial gap for the beam ring 6 to axially move, and the beam ring 6 is rotationally sleeved in the axial gap;

the safety cover is provided with at least one upper slide 101 at a position lower than the lower end of the first screwing structure, and the nozzle piece 8 is provided with at least one lower slide 801 at a position lower than the lower end of the second screwing structure.

When the sealing cap 1 is not opened in this embodiment, the sealing cap is screwed to the spout member 8, and the upper slider 101 and the lower slider 801 are staggered and intersected along the peripheral direction of the spout member 8.

Compared with the prior art, the embodiment does not need to solve the problems of easy dumping, difficult opening and the like caused by overlarge size of the breakpoint connection structure in a manner of reducing the size of the breakpoint connection structure, and ensures that the breakpoint connection structure has qualified thickness, namely, the pipe cover is rubbed and bumped by slight external force in the packaging and transportation process, the breakpoint connection structure is not easily broken, and the misjudgment that the formed product is opened is avoided.

As for the problem that the break point connection structure is thicker and may cause difficult opening of circumferential torsion, the present embodiment solves the problem by providing the upper slide seat 101 and the lower slide seat 801, specifically, when the user applies force to rotate the safety cover to unseal, the safety cover drives the collar 6 to rotate first until the upper slide seat 101 of the safety cover collides with the lower slide seat 801 of the nozzle member 8 laterally; further increasing the force applied, the upper slide 101 slides up to the top end of the lower slide 801 in a "sudden" friction manner, the safety cap moves axially upwards in a "sudden" manner, the collar 6 cannot move axially upwards due to the constraint of the axial gap, so that the second break point connection 7 is thinned by axial tension, the thinned second break point connection 7 can relieve the force required for subsequent radial opening, the safety cap continues to rotate upwards along the rotation structure, the thinned break point connection is subjected to radial tension, the break point connection is broken by torsion, and the safety cap rotates until the opening is completed after the safety cap is separated from the orifice piece 8.

In addition, the design of the upper slider 101 and the lower slider 801 is also advantageous in preventing the safety cap from being opened by a slight external force, because a strong force is required to be applied circumferentially to frictionally slide the upper slider 101 to the top end of the lower slider 801, and the external force is generally disordered and slight during the packaging and transportation process, so that the upper slider 101 cannot be frictionally slid to the top end of the lower slider 801.

Specifically, the sealing cover body 1 screwed on the pipe orifice piece 8 has a certain movable space along the axial direction of the pipe orifice piece 8, and a movable space is reserved for the axial lifting of the sealing cover body 1. Since the break point connection structure is extremely small in size even if it is designed to be of a satisfactory thickness, the movable space is extremely small, that is, stable connection of the screwed structure is not substantially affected.

The lower sliding seat 801 is not overlapped with the second screwing structure in the axial direction of the pipe orifice piece 8, and the lower sliding seat 801 is positioned at the outer side of the second screwing structure; correspondingly, the upper sliding seat 101 is not overlapped with the first screwing structure in the axial direction of the safety cover, and the upper sliding seat 101 is positioned at the outer side of the first screwing structure. Avoiding the design of the upper slide 101 and the lower slide 801 from affecting the upward rotation or downward rotation of the safety cover, and being beneficial to design of a mold convenient for demolding.

In this embodiment, the outer side wall of the orifice member 8 is protruded outward to form an upper ring protrusion 803 and a lower ring protrusion 804 which are distributed up and down, and the axial gap is formed between the upper ring protrusion 803 and the lower ring protrusion 804.

Specifically, the top surface of the upper ring protrusion 803 protrudes upward to form the lower slider 801.

Specifically, the lower edge of the outer side wall of the sealing cover body 1 protrudes towards the outer circumferential direction to form a circumferential annular protrusion, and the upper sliding seat 101 is formed by downwards protruding the bottom surface of the circumferential annular protrusion, so that the upper sliding seat 101 and the first screwing structure are not overlapped in the axial direction of the safety cover, and the upper sliding seat 101 is located at the outer side of the first screwing structure.

Specifically, the inner side wall of the sealing cover body 1 is provided with at least one section of internal convex thread 102 protruding towards the central axis direction of the sealing cover body, and the internal convex thread 102 is used as the first screwing structure;

the outer side wall of the pipe orifice piece 8 is provided with at least one section of outer convex thread 802 protruding towards the central axis direction of the pipe orifice piece, and the outer convex thread 802 is used as the second screwing structure;

the internal male threads 102 and the external male threads 802 are adapted.

In this embodiment, at least two upper sliding seats 101 are provided and uniformly distributed along the circumference of the side wall of the safety cover; the lower sliding seat 801 is provided with at least two corresponding to the upper sliding seat 101, and the lower sliding seats 801 are uniformly distributed along the circumference of the side wall of the pipe orifice 8. The evenly distributed upper and lower carriages 101, 801 provide a relatively uniform axial tension on all of the tamper evident columns 701 during "snap" lifting, ensuring that each tamper evident column 701 is thinned.

In this embodiment, the inclined arrangement of the side surfaces of the upper slide base 101 and the lower slide base 801, which are in contact with each other and rubbed, is respectively set as an upper guiding inclined surface 101a and a lower guiding inclined surface 801a, so that the upper slide base 101 slides smoothly and rapidly to the top end of the lower slide base 801, thereby reducing the force applied by the user, realizing the effect of "abrupt" lifting, and prompting that the direction is the correct direction of opening the cover.

The other side surface of the upper sliding seat 101 opposite to the upper guiding inclined surface 101a is set to be an upper blocking straight surface 101b, the other side surface of the lower sliding seat 801 opposite to the lower guiding inclined surface 801a is set to be a lower blocking straight surface 801b, the lower blocking straight surface 801b prevents the upper sliding seat 101 from passing through, so that a user is prompted to take the direction as an incorrect uncapping direction, the user is reminded to switch the rotary unsealing direction, and meanwhile, the screwing cap installation program on a production line can prevent the mechanical claw from screwing when screwing the cap, and further the sealing cap body is damaged.

In this embodiment, the outer side wall of the orifice piece 8 has at least one section of male screw thread 802 formed to protrude outwards, and the male screw thread 802 is used as the first screwing structure; the inner side wall of the safety cover is provided with at least one section of inward protruding thread 102, and the inward protruding thread 102 is used as the second screwing structure.

Specifically, a stop block 805 (refer to fig. 11) is filled between the lower end of the male screw 802 and the side wall of the lower slider 801, the stop block 805 is located on the circumferential moving track of the female screw outside the orifice member 8, and the end of the female screw cannot pass through the stop block 805. Considering that the nozzle 8 is essentially a small part, the lower slide 801 above it is more miniature, and when the user mistakenly screws the cap or the manipulator screws the cap to install, the impact of the upper slide 101 to the lower slide 801 is larger, and the block 805 is designed to enhance the structural strength of the lower slide 801, so that the impact sharing effect is also provided.

Specifically, the sealing cover body 1 of this embodiment is a four-section cylinder structure, the sealing cover body 1 includes a first cylinder, a second cylinder, a third cylinder and a fourth cylinder that are sequentially connected from top to bottom, and the inner diameters of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are gradually enlarged.

The top of the first cylinder is closed, the bottom of the first cylinder is open and is connected with the second cylinder. The sealed top surface of first barrel forms an interior clamp ring wall 105 to barrel inside protrusion, interior clamp ring wall 105's external diameter adaptation mouth of pipe 8's discharge gate internal diameter, the inside wall diameter adaptation of first barrel mouth of pipe 8's discharge gate external diameter, the inside wall of first barrel and interior clamp ring wall 105 jointly clamp mouth of pipe 8's discharge gate interior, lateral wall to this seals mouth of pipe 8's discharge gate avoids the packing content to spill over.

The closed top surface of the first barrel is protruded to form a tip ring 106 inside the barrel, the tip ring 106 is arranged between the inner clamping annular wall 105 and the inner side wall of the first barrel, and the tip of the tip ring 106 tightly abuts against the top end of the discharge hole of the pipe orifice piece 8, so that the sealing and anti-overflow effects are further improved.

The inner side wall of the second cylinder protrudes towards the central axis direction of the second cylinder to form the outer convex thread 802, and the outer convex thread 802 does not exceed the inner side wall of the first cylinder, so that the influence on the discharge port of the pipe orifice piece 8 to enter the first cylinder is avoided.

The male screw thread 802 is provided with two sections, and the two sections of the male screw thread 802 are centrosymmetric with respect to the center axis of the second cylinder, can be aligned to start screwing faster, and has stable direction and difficult skew in the screwing process.

Correspondingly, the outer side wall of the nozzle 8 also protrudes in the peripheral direction to form two male threads 802, and the two male threads 802 are matched with the female threads 102.

The third cylinder is internally provided with two upper sliding seats 101, and the two upper sliding seats 101 are centrally symmetrical with respect to the central shaft of the third cylinder. The inside of third barrel still is equipped with a plurality of (specifically 6) strengthening blocks 107, and is a plurality of strengthening blocks 107 and two upper slide 101 are circumference evenly distributed, strengthening blocks 107 and upper slide 101 are not exceeded the inside wall of second barrel avoids influencing the spin of second barrel connects, strengthening blocks 107 and upper slide 101 card in the top surface of upper ring protrusion 803.

After the safety cap is mounted on the mouthpiece, the lower slider 801 is positioned between the upper slider 101 and the reinforcing block 107 (see fig. 10), and the lower guide inclined surface 801a is opposite to the upper guide inclined surface 101 a. The reinforcing block 107 cannot pass through the lower blocking straight face 801b and is densely arranged, so that a user can be prompted to rotate the unsealing direction to be wrong more quickly, and the direction of the screw cap can be converted.

The upper part of the wall of the fourth cylinder is hollowed at intervals to form the second breakpoint connection structure 7, and the lower part of the wall of the fourth cylinder is provided with the binding ring 6, so that the binding ring 6 and the sealing cover body 1 are connected through the second breakpoint connection structure 7, and the integrated forming production is convenient.

The inner diameter of the fourth cylinder is slightly larger than the outer diameter of the upper ring protrusion 803, the inner side wall of the collar 6 protrudes toward the central axis to form a plurality of (specifically, 4) clamping blocks 601, and the clamping blocks 601 are clamped in the axial gaps, that is, under the upper ring protrusion 803.

From the above, it can be seen that the present embodiment designs the inside of the sealing cover body 1 into a "step-like" structure, and the functions of the respective cylinder structures do not interfere with each other and cooperate, which is beneficial to designing a mold that facilitates demolding.

In this embodiment, at least two sets of twisting teeth sets distributed along a circumferential direction are disposed between the collar 6 and the sealing cover 1, each set of twisting teeth set includes an upper twisting tooth 108 and a lower twisting tooth 602 that are disposed in a staggered manner along the circumferential direction, the upper twisting tooth 108 is formed by downward protruding from the bottom end of the sealing cover 1, the lower twisting tooth 602 is formed by upward protruding from the top end of the collar 6, and the axial end of the upper twisting tooth 108 and/or the axial end of the lower twisting tooth 602 are provided with the unsealing post 701.

In the process of rotating the cover, the collar 6 will deform to a certain extent due to pulling, and the deformed collar 6 is difficult to continue to rotate with the sealing cover 1, that is, the upper torsion teeth 108 in this state hardly move or rotate at a speed far lower than that of the sealing cover 1, so that the upper torsion teeth 108 collide with the lower torsion teeth 602, and the rotation of the upper torsion teeth 108 is blocked by the lower torsion teeth 602, so that the unsealing post 701 is twisted and deformed, and is easy to break.

More specifically, the outer side of the upper ring protrusion 803 is provided with a ring slope inclined outward and downward from the central axis of the nozzle member 8, so as to facilitate guiding the fixture block 601 to slide downward and be mounted and clamped in the axial gap.

The bottom surface of the clamping block 601 is an inclined surface 601a which is inclined outwards and downwards from the central axis of the sealing cover body 1, and is matched with the annular inclined surface, so that the clamping block 601 is mounted more smoothly.

The top surface of the clamping block 601 is parallel or substantially parallel to the bottom surface of the upper ring protrusion 803, so that the installed collar 6 cannot easily escape from the axial gap, and the safety cover is ensured to be firmly connected to the pipe orifice 8; meanwhile, the beam ring 6 repeatedly collides with the upper ring bulge in the process of repeatedly opening/closing the cover, and the design ensures that the collision between the beam ring 6 and the upper ring bulge is in surface contact, so that the impact force can be well dispersed.

Specifically, the top surface of the lower ring protrusion 804 protrudes upwards to form at least two symmetrical deformation-preventing protrusions 806, the deformation-preventing protrusions 404 are circumferentially distributed and located inside the collar, and the deformation-preventing protrusions 404 do not obstruct the rotation of the collar, but have a constraint function on the deformation of the collar during the pulling process, so as to prevent the excessive deformation of the collar.

The single deformation preventing protrusion 806 is located between the two clamping blocks 601 (refer to fig. 10), when the safety cover is not rotated by force, the rotation of the clamping blocks 601 is limited by the deformation preventing protrusion 806, similar to the above-mentioned action of the upper and lower sliding seats, the relative rotation of the pipe orifice 8 and the safety cover due to the excessive angle is avoided as much as possible, and the installation stability is maintained. It should be noted that, once the safety cover is rotated by an external force, the inclined surface 601a of the clamping block 601 may slide over the clamping block 601, and the design of the deformation preventing protrusion 806 may not affect the rotation of the collar 6.

In this embodiment, a limiting substrate 807 is disposed on the outer side of the spout member 8 below the lower ring protrusion 804 in parallel, and a bottom surface of the limiting substrate 807 contacts with an edge of the opening 303 of the flexible packaging container to indicate an installation position of the spout member 8 on the flexible packaging container, and prevent the spout member 8 from falling into the flexible packaging container during the processing.

The safety cap mounted to the nozzle member 8 is not forced to serve as a gripping position, and therefore, a gripping neck groove is formed between the limit substrate 807 and the lower ring protrusion 804 for gripping the transported product.

The lower part of the limit substrate 807 is provided with a pressure patch part 808 for bonding and sealing with the flexible packaging bag, and the surface of the pressure patch part 808 is provided with raised stripes, which is beneficial to improving the bonding firmness.

Variations and modifications of the above-described embodiments may be made by those skilled in the art in light of the foregoing disclosure and are accordingly intended to be within the scope of the appended claims. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.

Claims

1. The safety cover is characterized by comprising a sealing cover body and a wall expansion body which are integrally formed, wherein the sealing cover body is rotatably installed at an opening of a container and seals the opening of the container, the wall expansion body is arranged around the sealing cover body, the wall expansion body is connected to the periphery of the sealing cover body through a hollow structure, and an axial air passage is formed between the sealing cover body and the wall expansion body;

2. The safety cover according to claim 1, wherein a first end of the connection harness is formed by protruding a top wall or a side wall of the opening toward an inside of the opening, the connection harness not exceeding an inside of the expanded wall;

3. A safety cover according to claim 1 or 2, wherein the portion of the connection harness located within the opening is provided with a curved structure, the curved structure being connected to the top wall and/or side wall of the opening by a first break point connection structure;

4. A safety cover according to claim 3, wherein the structure of the expansion wall corresponding to the top of the opening is an elastic strip part capable of being elastically deformed;

5. The safety cover according to claim 1, wherein the hollowed-out structure is a plurality of arc-shaped sheets, the arc-shaped sheets are uniformly distributed around the sealing cover body, a main positioning point is arranged in the center of the top surface of the sealing cover body, two auxiliary positioning points are symmetrically arranged on two sides of the main positioning point, and the auxiliary positioning points correspond to the middle part of a space between the two arc-shaped sheets;

6. The safety cover according to claim 1, wherein a second breakpoint connection structure is provided between the sealing cover body and the collar;

7. A spout assembly adapted for flexible packaging containers, comprising a spout assembly and a safety cap according to any one of claims 1 to 5;

8. The suction nozzle assembly as claimed in claim 7, wherein the sealing cap screwed to the nozzle member has a certain movement space in an axial direction of the nozzle member;

9. The suction nozzle assembly of claim 8, wherein the sealing cover body is of a four-section cylinder structure, the sealing cover body comprises a first cylinder, a second cylinder, a third cylinder and a fourth cylinder which are sequentially connected from top to bottom, and the inner cylinder diameters of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are gradually enlarged;

10. The nozzle assembly of claim 9, wherein an outer side of the upper ring protrusion is provided as a ring slope inclined outwardly and downwardly from a central axis of the nozzle member; the bottom surface of the clamping block is an inclined surface which is outwards and downwards inclined from the central shaft of the sealing cover body and is matched with the annular inclined surface;