EP4524052A1

EP4524052A1 - Safety cover and suction nozzle assembly therefor

Info

Publication number: EP4524052A1
Application number: EP24162854.4A
Authority: EP
Inventors: Jianchang ZHONG; Fenghui ZHANG; Sunian CHEN; Jianfeng TIAN
Original assignee: Foshan Nanhai Ld Packaging Co Ltd; Guangzhou Aiyang Plastics Industry Co Ltd
Current assignee: Foshan Nanhai Ld Packaging Co Ltd; Guangzhou Aiyang Plastics Industry Co Ltd
Priority date: 2023-09-12
Filing date: 2024-03-12
Publication date: 2025-03-19

Abstract

The invention discloses a safety cover, which includes a cover body and an expanded wall. The expanded wall is arranged around the cover body, the expanded wall is connected with an outer periphery of the cover body through a hollow structure, and an axial air channel is formed between the cover body and the expanded wall. The expanded wall is provided with at least one opening penetrating a side of the expanded wall to form a radial air channel, the opening extends through to one end of the expanded wall close to a container, and at least one deformable connection wiring harness is provided in the opening. A first end of the connection wiring harness is located at any position within an outer surface of the expanded wall, a second end of the connection wiring harness extends downward to be directly or indirectly bound to a harness ring, and the harness ring is rotationally connected with the container. The connection wiring harness does not extend beyond an outer side of the expanded wall. In the invention, through clever structural design, triple safety insurance is formed to avoid risk of suffocation to the maximum extent, and at the same time, the provisions of the connection wiring harness and the harness ring facilitates recycling. The invention further discloses a suction nozzle assembly including the safety cover, which is suitable for soft packaging containers.

Description

FIELD OF THE INVENTION

The present invention belongs to the technical field of packaging, in particular, to a safety cover and a suction nozzle assembly therefor.

BACKGROUD OF THE INVENTION

The drinking port or the outlet of the packaging container is equipped with a sealing cover that can be installed and removed repeatedly to prevent the contents from being spilled and contaminated, while also ensuring the cleanliness of the drinking port or the outlet.
However, in the field of children's products, especially in the field of children's food, small and individually-installed sealing covers present safety hazards. Young children generally show a strong interest in colorful food packaging and play with it repeatedly over a period of time. They, especially in the 'detail-sensitive period', 'oral period', 'teething period', etc., will show strong interest in small things, and will try to put all the small objects they can get into their mouths to directly use their sense of smell and taste to explore and recognize things. Sealing covers that are small in size and can be completely detached from the packaging container are extremely easy to attract children's attention, and can easily be stuffed into their mouths and swallowed by children during play, causing suffocation, endangering lives, and posing a major safety hazard.
On the other hand, as people pay more and more attention to environmental issues, the concepts of environmental protection and sustainable development are being widely advocated and applied. Sealing covers that can be completely detached from the packaging containers are easily discarded separately, making it difficult to recycle the sealing covers and packaging containers together, resulting in resource waste and environmental pollution.
In order to solve the above problems, a patent with application number CN201020205935 . 0 disclosed a new bottle cover that can be integrated with plastic bottles such as mineral water bottles and beverage bottles. The bottle cover includes a bottle cover upper portion, a bottle cover lower portion, at least two easy-to-tear connection points and a connecting rib connecting the bottle cover upper portion and the bottle cover lower portion, wherein the bottle cover lower portion is provided under a snap ring at a bottle mouth of the bottle, the bottle cover upper portion is in threaded connection with the bottle mouth, and the easy-to-tear connection points are separated from the bottle cover lower portion and the bottle mouth, the bottle cover upper portion is still integrated with a bottle body through the connecting rib after being separated from each other.
The above prior art adds the connecting rib to keep the bottle cover in contact with the bottle body after opening, which can prevent the bottle cover from being discarded separately and is conducive to recycling; at the same time, even if the children put the bottle cover in their mouth, they cannot swallow it, which can basically avoid the safety hazard of suffocation caused by swallowing.
However, the connecting rib of the prior art are bent in a C shape and protrudes from the bottle mouth, which has the following shortcomings:

1. In addition to considering the final user application scenario, the product design also needs to consider how to reduce production costs, improve production efficiency, etc. in combination of production equipment, technology, processes, etc.

The bottle cover in existing mature production lines involves multiple screening, transportation and other procedures, which include transporting a large number of bottle covers to a vibrating plate, transporting and screening the bottle covers by the vibrating plate to unify the orientation of the bottle covers to facilitate subsequent grabbing by mechanical claws, and grabbing the bottle covers and installing them into packaging containers by the mechanical claws. The structure and parameter design of the entire production line are precisely designed for the size of bottle covers without protrusions, and adding protruding connecting ribs will change the peripheral size and center of gravity of the bottle cover, so that the original production line requires a lot of changes and debugging to adapt to produce bottle covers with protruding connecting ribs, which is extremely costly.
The impact of protruding connecting ribs on the production line includes but is not limited to the following scenarios:

firstly, the width of a transportation track at a rear of the vibrating plate is configured according to an outer circumferential size of a single bottle cover, the bottle covers are sorted into a tightly arranged single row on the transportation track, and adding the protruding connecting ribs will affect the arrangement density and transportation stability of the sealing covers on the track of the vibrating plate, so that the entire 'cover arrangement' production line needs to be redesigned and debugged for the protruding connecting ribs, which is extremely costly;
secondly, when passing through the 'orientation toward screening stations' of the vibration plate, the protruding connecting ribs will cause some bottle covers with the correct orientation to be screened out of the transportation track and transported into the vibrating plate again, affecting the accuracy of screening and production efficiency;
finally, the protruding C-shaped connecting ribs can also easily interfere with the subsequent movement, grabbing and capping of the mechanical claws; for example, the originally designed spacing for screwing obviously needs to be increased so that adjacent stations for screwing do not interfere with each other.

From the above simple example, it can be seen that although the bottle cover is only added with the protruding connecting rib, the modification or debugging of related equipment such as the 'cover grabbing' production line and the 'screwing' production line is caused.
2. The protruding connecting ribs are easily scratched and pulled by external forces during the packaging, transportation, and shelving of finished products, which may lead to scratches, burrs, breaks and other problems, affecting the quality of product packaging, especially the quality of appearance packaging.
3. Although the design of connecting ribs can basically avoid the risk of swallowing and suffocation, there is only one level of safety insurance in essence, so that in the process of children playing with the bottle repeatedly, unexpected situations may occur (such as strong pulling, pets biting, etc.), causing the connecting ribs to break, and then the bottle cover can be completely detached from the bottle body, which may result in the risk of swallowing and suffocation again.

SUMMARY OF THE INVENTION

In view of the problems in the prior art, the invention provides a safety cover and a suction nozzle assembly, so as to overcome the above technical problems existing in the prior art.
The technical solution of the invention is implemented as follows:

A safety cover includes a cover body and an expanded wall that are integrally formed with each other, and the cover body is screwed and mounted at an opening of a container and seals the opening of the container, wherein the expanded wall is arranged around the cover body, the expanded wall is connected with an outer periphery of the cover body through a hollow structure, and an axial air channel is formed between the cover body and the expanded wall;
the expanded wall is provided with at least one opening penetrating a lateral side of the expanded wall to form a radial air channel, the opening extends through to one end of the expanded wall close to the container, and at least one deformable connection wiring harness of the same material is provided in the opening;
a first end of the connection wiring harness is located at any position within an outer surface of the expanded wall, a second end of the connection wiring harness extends downward to be directly or indirectly bound to a harness ring, and the harness ring is rotationally connected with the container;
the connection wiring harness does not extend beyond an outer side of the expanded wall;
when the expanded wall is pinched and rotated for unsealing, the harness ring rotatably connected with the container enables the connection wiring harness to rotate along with the expanded wall; when the cover body is unscrewed and separated from the container, the harness ring remains rotationally connected with the container, and remains connected with the cover body and the expanded wall through the connection wiring harness.

Preferably, the first end of the connection wiring harness is formed by protruding from a top wall or a side wall of the opening toward an inside of the opening, and the connection wiring harness does not extend beyond an inner side of the expanded wall;
the connection wiring harness is arranged close to the inner side of the expanded wall, and an inner side surface of the connection wiring harness is flush or substantially flush with an inner side surface of the expanded wall.
Preferably, the connection wiring harness is provided with a bending structure at a location within the opening, and a first break-point connection structure is provided and connected between the bending structure and the top wall and/or the side wall of the opening;

the connection wiring harness is provided with a plurality of U-shaped bends that are connected end to end at the location within the opening, and the plurality of U-shaped bends are arranged along an axial direction of the safety cover;
the U-shaped bend is provided with two straight sections and a bending section connecting the two straight sections, and the first break-point connection structure is provided and connected between the bending section and the side wall of the opening;
a location where the straight section is connected with the bending section is configured as a turning portion, and a width of the connection wiring harness gradually decreases when being close to the turning portion and gradually increases when being away from the turning portion;
the first break-point connection structure comprises a plurality of easily-breakable connection tabs, and a thickness of the easily-breakable connection tab gradually decreases in a direction from a wall surface of the opening to the connection wiring harness;
an injection molded end seat having a size larger than that of the easily-breakable connection tab is further provided between the easily-breakable connection tab and the wall surface of the opening.

Preferably, a structure of the expanded wall corresponding to a top of the opening is an elastic strip portion that may undergo elastic deformation;

when a user pinches the expanded wall for unsealing, the expanded wall provided with the elastic strip portion deforms slightly, and left and right side walls of the opening are simultaneously squeezed toward the connection wiring harness;
an outer wall structure of the expanded wall is a plurality of anti-slip ridges arranged in a circumferential array around a central axis, and the single anti-slip ridge is arranged to extend axially; outer edges of the anti-slip ridges are all designed in an arc shape, bottoms of the plurality of anti-slip ridges are provided with a C-shaped bottom, and the C-shaped bottoms are simultaneously connected with all the anti-slip ridges.

Preferably, the hollow structure is a plurality of arc-shaped tabs, and the plurality of arc-shaped tabs are evenly distributed around the cover body; a center of a top surface of the cover body is provided with a main positioning point, two auxiliary positioning points are symmetrically provided on both sides of the main positioning point, and the auxiliary positioning points correspond to a middle portion of a space between the two arc-shaped tabs;
the single arc-shaped tab is arranged along an axial direction of the cover body, and the plurality of arc-shaped tabs are bent and protruded in a screwing direction.
Preferably, a second break-point connection structure is provided between the cover body and the harness ring;

the second break-point connection structure includes a plurality of unsealing connection posts, and a thickness of a location of the unsealing connection post close to the cover body gradually decreases;
at least two sets of twisted teeth are provided to be distributed along a circumferential direction between the harness ring and the cover body, and each set of the twisted teeth includes upper twisted teeth and lower twisted teeth that are arranged in a misaligned manner along the circumferential direction; the upper twisted teeth are formed by protruding downward from a bottom end of the cover body, the lower twist teeth are formed by protruding upward from a top end of the harness ring, and axial end portions of the upper twisted teeth and/or the lower twisted teeth are provided with the unsealing connection post.

A suction nozzle assembly is suitable for flexible packaging containers, and includes a nozzle element and the above safety cover;

the nozzle element is fixedly mounted on the flexible packaging container, with one part wrapped and fixed inside the flexible packaging container and the other part exposed to the outside of the flexible packaging container and screwed on to the safety cover;
the cover body is provided with a first screwing structure, and the nozzle element is provided with a second screwing structure; the first screwing structure is adapted to the second screwing structure, the cover body is screwed on the nozzle element, and the cover body covers and seals an outlet of the nozzle element;
the nozzle element is provided with an axial clearance for an axial movement of the harness ring, and the harness ring is rotatably sleeved in the axial clearance;
the safety cover is provided with at least one upper sliding seat at a location lower than a lower end of the first screwing structure, and the nozzle element is provided with at least one lower sliding seat at a location lower than a lower end of the second screwing structure;
when unsealed, the cover body is screwed to the nozzle element, and the upper sliding seat and the lower sliding seat are misaligned and intersect along an outer circumferential direction of the nozzle element.

Preferably, the cover body that is screwed tightly to the nozzle element has a certain movable space along an axial direction of the nozzle element;

the lower sliding seat and the second screwing structure do not overlap in the axial direction of the nozzle element, and the lower sliding seat is located outside the second screwing structure; correspondingly, the upper sliding seat and the first screwing structure do not overlap in the axial direction of the safety cover, and the upper sliding seat is located outside the first screwing structure;
a lower edge of an outer side wall of the cover body protrudes in the outer circumferential direction to form a circumferential annular protrusion, and the upper sliding seat is formed by protruding downward from a bottom surface of the circumferential annular protrusion;
an outer side wall of the nozzle element protrudes outward to form an upper annular protrusion and a lower annular protrusion that are distributed up and down, and the axial clearance is formed between the upper annular protrusion and the lower annular protrusion; a top surface of the upper annular protrusion protrudes upward to form the lower sliding seat;
an inner side wall of the cover body is provided with at least one section of female threads protruding toward a central axis of the cover body, and the female threads serve as the first screwing structure; an outer side wall of the nozzle element is provided with at least one section of male threads protruding outward a central axis of the nozzle element, and the male threads serve as the second screwing structure; the female threads are adapted to the male threads;
a blocking block is filled between a lower end portion of the male thread and a side wall of the lower sliding seat, the blocking block is located on a circumferential movement track of the female thread outside the nozzle element, and an end portion of the female thread may not pass through the blocking block;
there are at least two upper sliding seats, which are evenly distributed along a circumference of a side wall of the safety cover; there are at least two lower sliding seats corresponding to the upper sliding seats, and the lower sliding seats are evenly distributed along a circumference of a side wall of the nozzle element;
side surfaces of the upper sliding seat and the lower sliding seat that are in contact and friction with each other are tilted to match each other, and are respectively configured as an upper guide slope and a lower guide slope; the other side surface of the upper sliding seat opposite to the upper guide slope is configured as an upper blocking straight surface, the other side of the lower sliding seat opposite to the lower guide slope is configured as a lower blocking straight surface, and the lower blocking straight surface prevents the upper sliding seat from passing through.

Preferably, the cover body is of a four-section cylinder structure; the cover body includes a first cylinder, a second cylinder, a third cylinder and a fourth cylinder that are connected in sequence from top to bottom, and inner cylinder diameters of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder gradually expand;

a top portion of the first cylinder is closed, and a bottom portion thereof is open and connected with the second cylinder; the closed top surface of the first cylinder protrudes into an interior of the cylinder to form an inner clamping annular wall, and an outer diameter of the inner clamping annular wall is adapted to an inner diameter of the outlet of the nozzle element; a diameter of an inner side wall of the first cylinder is adapted to an outer diameter of the outlet of the nozzle element, and the inner side wall of the first cylinder and the inner clamping annular wall jointly clamp the inner and outer side walls of the outlet of the nozzle element;
the closed top surface of the first cylinder further protrudes toward the interior of the cylinder to form a tip ring, the tip ring is located between the inner clamping annular wall and the inner side wall of the first cylinder, and a tip of the tip ring closely contacts a top end of the outlet of the nozzle element;
an inner wall of the second cylinder protrudes toward a central axis thereof to form the female threads, and the female threads do not extend beyond the inner side wall of the first cylinder;
the female thread is provided with two sections, and the two sections of the female threads are symmetrical about the central axis of the second cylinder; correspondingly, the outer wall of the nozzle element further protrudes in an outer circumferential direction to form two sections of male threads, and the two sections of the male threads are adapted to the female threads;
the two upper sliding seats are provided inside the third cylinder, and the two upper sliding seats are symmetrical about a central axis of the third cylinder; a plurality of reinforcing blocks are further provided inside the third cylinder, and the plurality of reinforcing blocks and the two upper sliding seats are evenly distributed in the circumferential direction; the reinforcing block and the upper sliding seat do not extend beyond the inner side wall of the second cylinder to avoid affecting the screwing of the second cylinder, and the reinforcing block and the upper sliding seat are stuck on the top surface of the upper annular protrusion;
after the safety cover is mounted to the suction nozzle, the lower sliding seat is located between the upper sliding seat and the reinforcing block, and the lower guide slope and the upper guide slope are opposite to each other; the reinforcing block may not pass through the lower blocking straight surface;
an upper portion of a cylinder wall of the fourth cylinder is hollowed out at intervals to form the second break-point connection structure, and the lower part thereof is configured as the harness ring;
an inner diameter of the fourth cylinder is larger than an outer diameter of the upper annular protrusion, an inner side wall of the harness ring protrudes toward the central axis to form a plurality of stuck blocks, and the stuck blocks are stuck in the axial clearance.

Preferably, an outer side of the upper annular protrusion is configured as an annular slope tilted outward and downward from the central axis of the nozzle element; a bottom surface of the stuck block is a tilted surface tilted outward and downward from the central axis of the cover body, and is adapted to the annular slope;

a top surface of the stuck block is parallel or substantially parallel to a bottom surface of the upper annular protrusion;
a top surface of the lower annular protrusion protrudes upward to form at least two symmetrical anti-deformation bumps, the anti-deformation bumps are circumferentially distributed and located inside the harness ring, and the anti-deformation bump does not hinder the rotation of the harness ring;
the single anti-deformation bump is located between the two stuck blocks, and when there is no strong rotation for the safety cover, the rotation of the stuck block is restricted by the anti-deformation bump;
a limiting base tab is provided on the outer side of the nozzle element in parallel below the lower annular protrusion, and a bottom surface of the limiting base tab is in contact with an opening edge of the flexible packaging container;
a clamping neck groove is formed between the limiting base tab and the lower annular protrusion, a pressing tab portion is provided below the limiting base tab, and a surface of the pressing tab portion is provided with raised stripes.

A suction nozzle assembly includes a nozzle element and the safety cover; the cover body and an upper portion of the nozzle element are detachably connected with each other through a rotating connection structure, so that the cover body may be detachably screwed and covered onto a nozzle of the nozzle element.
Further, at least one set of anti-rotation limiters is provided circumferentially on an inner wall of the harness ring, and opposite outer sides of the two anti-rotation limiters in the same set respectively form screwing guide portions; opposite inner sides of the two anti-rotation limiters in the same set respectively form anti-rotation limiting portions, and an anti-rotation groove is formed between the two anti-rotation limiters in the same set; a circumference of the nozzle element below the rotating connection structure is provided with an anti-rotation boss, and the nozzle element is provided with a blocking edge that limits the detachment of the anti-rotation limiter from an upper direction above the anti-rotation boss; a width of the anti-rotation boss is adapted to a width of the anti-rotation groove, and when the suction nozzle assembly is designed such that the harness ring and the nozzle element are relatively assembled in place, the anti-rotation boss is stuck into the anti-rotation groove of the harness ring; with the above arrangement, when the harness ring is assembled on the nozzle element, through the cooperation of the anti-rotation groove and the anti-rotation boss of the nozzle element, the harness ring is prevented from rotating circumferentially, so that when the cover body is opened, the break-point structures between the cover body and the harness ring are quickly disconnected.
Further, the anti-rotation limiter is provided with two or more sets, and the anti-rotation boss is provided with two sets or more correspondingly; with the above arrangement, the assembly of the harness ring and the nozzle element is more stable and the anti-rotation effect is good.
Further, the nozzle element is provided with a limiting convex edge that limits the detachment of the anti-rotation limiter from a lower side below the anti-rotation boss; with the above arrangement, the anti-rotation limiter is better limited between the limiting convex edge and the blocking edge.
The beneficial effects of the invention are:

firstly, in the invention, the connection wiring harness is provided to keep the safety cover and the container connected with each other after opening, preventing children from eating by mistake, which is the first level of safety insurance, and at the same time, the cover body is prevented from being discarded separately, which facilitates recycling;
secondly, considering that even if there is a connection wiring harness for connection, there may still be accidents that cause the connection wiring harness to break (for example, torn off by force when a child repeatedly plays with it, etc.), and further the invention is completely separated from the container; therefore, the invention is further provided with the expanded wall, which may effectively expand the volume of the invention, and the standard size of the expanded wall is much larger than that of an average young child's respiratory tract so that even if a child accidentally eats the invention with a broken connection wiring harness into the mouth, the invention will be unable to be swallowed into the respiratory tract due to the excessive size, thereby avoiding the risk of suffocation; this is designed for those who cannot swallow the invention, which is the second level of safety insurance;
moreover, older children, teenagers or pets may accidentally swallow the invention in some unexpected situations; therefore, the invention is further provided with the axial air channel and the radial air channel for air flow to pass through, so that even if in extreme cases the invention is accidentally swallowed, breathing may be maintained until the accidentally-swallowed subject seeks medical attention to avoid the risk of suffocation; this is designed for subjects that can swallow the invention, which is the third level of safety insurance;
finally, the connection wiring harness of the invention is 'side-hidden', which, i.e., does not exceed the outside of the expanded wall. That is, the outer circumferential size of the cover basically does not change, so that the original production line may basically continue to be used, and there is no need to change the 'cover arrangement' line, the cover installation gap, while having no protruding structures that affect the grabbing of the mechanical claws, thereby effectively controlling the costs in producing new products; at the same time, during the processes of packaging, transportation, and shelving, the 'side-hidden' connection wiring harness is not susceptible to external scratches, pulls, etc., preventing the connection wiring harness from breaking or producing scratches, burrs, etc., thereby ensuring the packaging quality of the product.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a first structural diagram of a safety cover according to the invention;
Fig. 2 is a second structural diagram of the safety cover according to the invention;
Fig. 3 is a third structural diagram of the safety cover according to the invention;
Fig. 4 is a bottom view of the safety cover according to the invention;
Fig. 5 is a first structural diagram of a suction nozzle assembly according to the invention;
Fig. 6 is an enlarged view of A of Fig. 5;
Fig. 7 is a second structural diagram of the suction nozzle assembly according to the invention;
Fig. 8 is an enlarged view of B of Fig. 7;
Fig. 9 is a diagram of opening the suction nozzle assembly according to the invention;
Fig. 10 is a third structural diagram of the suction nozzle assembly according to the invention (part of the structure removed);
Fig. 11 is a structural diagram of a nozzle element according to the invention;
Fig. 12 is a cross-sectional view of the suction nozzle assembly according to the invention;
Fig. 13 is a fourth structural diagram of the safety cover according to the invention;
Fig. 14 is a fifth structural diagram of the safety cover according to the invention;
Fig. 15 is a sixth structural diagram of the safety cover according to the invention;
Fig. 16 is a seventh structural diagram of the safety cover according to the invention;
Fig. 17 is a diagram of the safety cover according to Embodiment 3;
Fig. 18 is a diagram showing that the nozzle element is covered with respect to the safety cover according to Embodiment 3;
Fig. 19 is a diagram showing that the nozzle element is opened with respect to the safety cover according to Embodiment 3;
Fig. 20 is an exploded view of the suction nozzle assembly according to Embodiment 3;
Fig. 21 is a section view of the diagram of Fig. 19;
Fig. 22 is a front view of the safety cover according to Embodiment 3.

Marks of drawings:

11. Cover body; 101. Upper sliding seat; 101a. Upper guide slope; 101b. Upper blocking straight surface; 102. Female thread; 103. Main positioning point; 104. Auxiliary positioning point; 105. Inner clamping annular wall; 106. Tip ring; 107. Reinforcing block; 108. Upper twisted teeth;
2. Arc-shaped tab;
3. Expanded wall; 301. Elastic strip portion; 302. C-shaped bottom; 303. Opening;
4. Connection wiring harness; 401. First end; 402. Second end; 403. Bending section; 403a. Turning portion;
5. First break-point connection structure; 501. Easily-breakable connection tab; 502. Injection molded end seat;
6. Harness ring; 601. Stuck block; 601a. Tilted surface; 602. Lower twisted teeth;
7. Second break-point connection structure; 701. Unsealing connection post;
8. Nozzle element; 801. Lower sliding seat; 801a. Lower guide slope; 801b. Lower blocking straight surface; 802. Male thread; 803. Upper annular protrusion; 804. Lower annular protrusion; 805. Blocking block; 806. Anti-deformation bump; 807. Limiting base tab; 808. Pressing tab portion;
1. Safety cover; A131. Anti-rotation limiter; A132. Screwing guide portion; A130. Anti-rotation groove; A133. Stuck guide portion; A2. Nozzle element; A17. Sealing ring; A21. Nozzle; A134. Anti-rotation limiting portion; A22. Anti-rotation boss; A31. Outer thread; A32. Inner thread; A23. Blocking edge; A24. Limiting convex edge; A231. Guide slope; A26. Joint portion; A15. Break-point structure.

DETAILED DESCRIPTION OF THE INVENTION

Clear and intact description will be made on technical solutions in the embodiments of the present invention below in combination with drawings in the embodiments of the present invention. Obviously, the described embodiments are merely a part of embodiments of the present invention and are not all the embodiments. Based on the embodiments of the invention, all the other embodiments obtained by those of ordinary skill in the art without inventive effort are within the scope of the invention.
In the description of the present disclosure, it is to be noted that, a direction or a positional relationship indicated by terms 'center', 'longitudinal', 'transverse', 'length', 'width', 'thickness', 'upper', 'lower', 'front', 'rear', 'left', 'right', 'vertical', 'horizontal', 'top', 'bottom', ' inner', 'outer', 'clockwise', 'counterclockwise', and the like is based on that shown in the accompanying drawings, is merely to describe the invention and simplify the description and does not imply or suggest that the indicated apparatus or component must have a special direction or is constructed and operated in a special direction, and thus cannot be understood as a limit of the present disclosure.

Embodiment 1

With reference to Figs. 1 to 16, a safety cover includes a cover body 11 and an expanded wall 3 that are integrally formed with each other, and the cover body 11 is screwed and mounted at an opening of a container and seals the opening of the container, wherein the expanded wall 3 is arranged around the cover body 11, the expanded wall 3 is connected with an outer periphery of the cover body 11 through a hollow structure, and an axial air channel is formed between the cover body 11 and the expanded wall 3.
The expanded wall 3 is provided with at least one opening 303 penetrating a side of the expanded wall to form a radial air channel, the opening 303 extends through to one end of the expanded wall 3 close to the container, and at least one deformable connection wiring harness 4 of the same material is provided in the opening 303;

a first end 401 of the connection wiring harness 4 is located at any position within an outer surface of the expanded wall 3;
since the embodiment needs to be unsealed by rotating, in order to prevent the connection wiring harness 4 from being wound around the cover body 11 or the container opening during the unscrewing operation, and to avoid the design of the connection wiring harness 4 from hindering the unscrewing operation, a second end 402 of the connection wiring harness 4 extends downward to be directly or indirectly bound to a harness ring 6 and the harness ring 6 is rotationally connected with the container;
the connection wiring harness 4 does not extend beyond an outer side of the expanded wall 3.

When the expanded wall 3 is pinched and rotated for unsealing, the harness ring 6 rotatably connected with the container enables the connection wiring harness 4 to rotate along with the expanded wall 3 to avoid the design of the connection wiring harness 4 from hindering the unsealing operation; when the cover body 11 is unscrewed and separated from the container, the harness ring 6 remains rotationally connected with the container, and remains connected with the cover body 11 and the expanded wall 3 through the connection wiring harness 4.
Firstly, in the embodiment, the connection wiring harness 4 is provided to keep the safety cover and the container connected with each other after opening, preventing children from eating by mistake, which is the first level of safety insurance, and at the same time, the cover body 11 is prevented from being discarded separately, which facilitates recycling;

secondly, considering that even if there is a connection wiring harness 4 for connection, there may still be accidents that cause the connection wiring harness 4 to break (for example, torn off by force when a child repeatedly plays with it, etc.), and further the safety cover of the embodiment is completely separated from the container; therefore, the safety cover of the embodiment is further provided with the expanded wall 3, which may effectively expand the volume of the embodiment, and the standard size of the expanded wall 3 is much larger than that of an average young child's respiratory tract so that even if a child accidentally eats the safety cover of the embodiment with a broken connection wiring harness 4 into the mouth, the embodiment will be unable to be swallowed into the respiratory tract due to the excessive size, thereby avoiding the risk of suffocation; this is designed for those who cannot swallow the embodiment, which is the second level of safety insurance;
moreover, older children, teenagers or pets may accidentally swallow the embodiment in some unexpected situations; therefore, the embodiment is further provided with the axial air channel and the radial air channel for air flow to pass through, so that even if in extreme cases the embodiment is accidentally swallowed, breathing may be maintained until the accidentally-swallowed subject seeks medical attention to avoid the risk of suffocation; this is designed for subjects that can swallow the embodiment, which is the third level of safety insurance;
finally, the connection wiring harness 4 of the embodiment is 'side-hidden', which, i.e., does not exceed the outside of the expanded wall 3. That is, the outer circumferential size of the cover basically does not change, so that the original production line may basically continue to be used, and there is no need to change the 'cover arrangement' line, the cover installation gap, while having no protruding structures that affect the grabbing of the mechanical claws, thereby effectively controlling the costs in producing new products; at the same time, during the processes of packaging, transportation, and shelving, the 'side-hidden' connection wiring harness 4 is not susceptible to external scratches, pulls, etc., preventing the connection wiring harness 4 from breaking or producing scratches, burrs, etc., thereby ensuring the packaging quality of the product.

It should be noted that the applicant's production line originally produced caps with similar peripheral dimensions to the expanded wall 3; therefore, the design of the 'side-hidden' connection wiring harness 4 allows the original production line to continue to be used for production. However, the core design of the embodiment, the 'side hidden' connection wiring harness 4, is also applicable to other types of bottle covers, so that the production line originally used to produce bottle covers without the connection wiring harness 4 basically does not need to be modified.
In actual production, the mechanical claws need to extend into the axial air channel to grasp the embodiment; therefore, the first end 401 of the connection wiring harness 4 is formed by protruding from the top wall or the side wall of the opening 303 toward the inside of the opening 303, and the connection wiring harness 4 does not exceed the inside of the expanded wall 3 to avoid interfering with the grabbing movement of the mechanical claws.
The connection wiring harness 4 may be a structure of straight line type extending in the opening 303 until it is connected with the container (as shown in Fig. 16), but preferably the connection wiring harness 4 is provided with the bending structure in the opening 303 so that after the embodiment is unsealed, the connection wiring harness 4 is deformed and stretched to keep the embodiment as far away from an opening of the container as possible to avoid contamination of the contents of the container or disturbing or scratching the user's lips or facial skin when drinking.
The connection wiring harness 4 is freely bent within the opening 303, and the shape is not particularly limited. At the same time, in order to allow the buyer to intuitively judge whether the product has been unsealed, a first break-point connection structure 5 is provided and connected between the bending structure and the top wall and/or side wall of the opening 303, and the break-point connection structure also has the function of constraining and maintaining the shape of the connection wiring harness 4 before unsealing.
Specific designs of the bending structure and the first break-point connection structure include but are not limited to those shown in Figs. 13 to 16.
Specifically, the connection wiring harness 4 of the embodiment has a plurality of (3) U-shaped bends connected end to end in the opening 303 (as shown in Fig. 1), and the plurality of U-shaped bends are arranged along an axial direction of the safety cover. The advantages of this design are: firstly, the length of the connection wiring harness 4 is extended as much as possible within the opening 303 with limited space; secondly, the regular U-shaped arrangement facilitates mold opening and production; finally, after the tensile deformation of this design, the stress on each part is more uniform compared to other bending structures, there is no obvious stress concentration area, and it is not easy to break.
The U-shaped bend is provided with two straight sections and a bending section 403 connecting the two straight sections, and the first break-point connection structure is provided and connected between the bending section 403 and the side wall of the opening 303.
More specifically, the first break-point connection structure includes a plurality of (3) easily-breakable connection tabs 501, and a thickness of the easily-breakable connection tab 501 gradually decreases in a direction from a wall surface of the opening 303 to the connection wiring harness 4 (referring to Fig. 8), so that the broken easily-breakable connection tabs 501 remain on the wall surface of the opening 303 and are not easily touched, i.e., the connection wiring harness 4 is prevented from scratching the user's skin with the protruding easily-breakable connection tabs 501 after unsealing.
An injection molded end seat 502 having a size slightly larger than that of the easily-breakable connection tab 501 is further provided between the easily-breakable connection tab 501 and the wall surface of the opening 303. A width of a mold corresponding to the easily-breakable connection tab 501 is extremely thin, so it is difficult for the injection slurry to flow in and fill up. Providing a groove structure corresponding to the injection molded end seat 502 on the mold is conducive to guiding the slurry to flow into and fill the mold position corresponding to the easily-breakable connection tab 501.
In the embodiment, a structure of the expanded wall 3 corresponding to a top of the opening 303 is an elastic strip portion 301 that may undergo elastic deformation, i.e., a bottom surface of the elastic strip portion 301 is the top wall of the opening 303. When the user pinches the expanded wall 3 for unsealing, the expanded wall 3 provided with the elastic strip portion 301 is slightly deformed, and left and right walls of the opening 303 are simultaneously squeezed toward the connection wiring harness 4, which facilitates breaking the easily-breakable connection tab 501 and making the unsealing of the embodiment convenient and quick.
A location where the straight section is connected with the bending section 403 is configured as a turning portion 403a, and a width of the connection wiring harness 4 gradually decreases when being close to the turning portion 403a to ensure the flexibility of the connection wiring harness 4 when being deformed and stretched, and gradually increases when being away from the turning portion 403a to ensure the strength of the connection wiring harness 4.
In the embodiment, with reference to Fig. 3, the connection wiring harness 4 is arranged close to the inside of the expanded wall 3, and the inner side of the connection wiring harness 4 is flush or substantially flush with the inner side of the expanded wall 3, so that when the embodiment is twisted and unsealed, the connection wiring harness 4 tends to slide to the inside of the expanded wall 3, which, as compared with the tendency to slide to the outside of the expanded wall 3, is less likely to cause pulling on the connection wiring harness 4.
Considering that the first break-point connection structure connecting the connection wiring harness 4 and the expanded wall 3 in the circumferential direction is relatively easy to be broken by knocking to cause a misunderstanding that the product has been unsealed in rare cases during the product sales process, in the embodiment a second break-point connection structure 7 is provided between the cover body 11 and the harness ring 6 to solve this problem, and the second break-point connection structure 7 connecting the cover body 11 and the harness ring 6 in the axial direction is not easy to break even if being knocked, which may more accurately judge whether the product has been unsealed. The first break-point connection structure and the second break-point connection structure 7 will both break as the user grasps, presses, rotates and unseals.
Specifically, the second break-point connection structure 7 includes a plurality of unsealing connection posts 701, the plurality of the unsealing connection posts 701 are distributed circumferentially along the bottom of the sealing cover body 11, and a thickness of a location of the unsealing connection post 701 close to the cover body 11 gradually decreases (referring to Fig. 6), so that the broken unsealing connection posts 701 are retained on the harness ring 6 as much as possible and are not easily touched, i.e., avoiding the protruding unsealing connection posts 701 on the edge of the cover body 11 from scratching the user's skin after unsealing.
In the embodiment, the cover body 11 is of a round-cup-shaped structure with one end closed and one end open; a main body of the expanded wall 3 is of a cylindrical structure open up and down; the cover body 11 is located inside the expanded wall 3 and is coaxial with the expanded wall 3.
In the embodiment, an outer wall structure of the expanded wall 3 is a plurality of anti-slip ridges arranged in a circumferential array around a central axis, and the single anti-slip ridge is arranged to extend axially, so that when the fingers grasp and pinch the expanded wall 3, the friction force is relatively large, the grip is firm, and it is not easy to slip, so as to facilitate the application of force to unseal the embodiment.
Outer edges of the anti-slip ridges are all designed in an arc shape and non-sharp angular structures, which will not scratch the inner wall of the mouth even if the ridges are accidentally inserted into the mouth and will also avoid scratching the delicate skin of young children.
Specifically, bottoms of the plurality of anti-slip ridges are provided with a C-shaped bottom 302, and the C-shaped bottoms 302 are simultaneously connected with all the anti-slip ridges, so as to enhance the structural strength of the anti-slip ridges to avoid easy collision and deformation, which in turn will affect the appearance quality of the packaging.
In the embodiment, the hollow structure is a plurality of (4) arc-shaped tabs 2, and the plurality of arc-shaped tabs 2 are evenly distributed around the cover body 11; a center of a top surface of the cover body 11 is provided with a main positioning point 103, two auxiliary positioning points 104 are symmetrically provided on both sides of the main positioning point 103, and the auxiliary positioning points 104 correspond to a middle portion of a space (i.e., the axial air channel) between the two arc-shaped tabs 2. The orientation of the safety cover is determined by the three points, so that the mechanical claws may accurately reach in and grab from the top surface of the safety cover. At the same time, the provision of the auxiliary positioning point104 allows the mechanical claws to accurately extend into the axial air channel and then grasp to avoid collision, and then rotate and install the embodiment to the nozzle element 8.
More specifically, the single arc-shaped tab 2 is arranged along an axial direction of the cover body 11, and the plurality of arc-shaped tabs 2 are bent and protruded in a screwing direction. When the mechanical claws are rotated to install the embodiment, the bent arc-shaped tab 2 may guide the mechanical claws to be basically stable in the middle of the arc-shaped tab 2 to stabilize the screwing installation.

Embodiment 2

A suction nozzle assembly is suitable for flexible packaging containers, and includes a nozzle element 8 and Embodiment 1; the nozzle element 8 is fixedly mounted on the flexible packaging container, wherein one part of the nozzle element 8 is wrapped and fixed inside the flexible packaging container, and the other part of the nozzle element 8 is exposed to the outside of the flexible packaging container and screwed on to the safety cover.
Currently, there are two main ways to disconnect for the break-point connection:
One way is: when the cover is pulled out, the break-point connection is first stretched and then pulled out, and finally the cover is separated from the nozzle element 8, i.e., the break-point connection is broken by applying force along the axial direction of the nozzle element 8; the disadvantage of this way is that: when the cover is pulled out, the moment the break-point connection breaks, it is difficult for the user to stop the force in time, which may easily cause the contents to spill and affect the user experience, and if the size of the break-point connection is reduced to avoid pouring problems, the break-point connection may be easily disconnected due to slight external force during packaging and transportation, which leads to a misjudgment that the product has been unsealed.
The other way is: by applying force along the outer circumferential direction of the nozzle element 8, the break-point connection is twisted and broken by rotation, but applying force in the circumferential direction to break the break-point connection requires a large amount of torque, which is not a good experience for users with weak strength, and if the size of the break-point connection is reduced in order to reduce the difficulty of unsealing the cover, a misjudgment that the above product has been unsealed may still be caused.
In the embodiment, the cover body 11 is provided with a first screwing structure, and the nozzle element 8 is provided with a second screwing structure; the first screwing structure is adapted to the second screwing structure, the cover body 11 is screwed on the nozzle element 8, and the cover body 11 covers and seals an outlet of the nozzle element 8;

the nozzle element 8 is provided with an axial clearance for an axial movement of the harness ring 6, and the harness ring 6 is rotatably sleeved in the axial clearance;
the safety cover is provided with at least one upper sliding seat 101 at a location lower than a lower end of the first screwing structure, and the nozzle element 8 is provided with at least one lower sliding seat 801 at a location lower than a lower end of the second screwing structure.

When the embodiment is unsealed, the cover body 11 is screwed to the nozzle element 8, and the upper sliding seat 101 and the lower sliding seat 801 are misaligned and intersect along an outer circumferential direction of the nozzle element 8.
Compared with the prior art, the embodiment does not need to reduce the size of the break-point connection structure to solve the problems of easy pouring and difficulty in unsealing caused by too thick breakpoints; first the embodiment ensures that the break-point connection structure has qualified thickness, i.e., even if the cover is slightly rubbed by external force during packaging and transportation, the break-point connection structure will not be easily disconnected, which avoids a misjudgment that the product has been unsealed.
As for the problem that the thicker break-point connection structure may cause circumferential torsion and difficulty in unsealing, the problem is solved by the embodiment with the provisions of the upper sliding seat 101 and the lower sliding seat 801.specifically, when the user exerts force to rotate the safety cover for unsealing, the safety cover first drives the harness ring 6 to rotate until the upper sliding seat 101 of the safety cover and the lower sliding seat 801 of the nozzle element 8 collide sideways; as the exerted force is further increased, the upper sliding seat 101 'suddenly' slides upward with friction to the top of the lower sliding seat 801, and the safety cover then 'suddenly' moves axially upward, and the harness ring 6 may not move axially upward due to the constraints of the axial clearance; therefore, the second break-point connection structure 7 becomes thinner when subjected to axial tension, the thinner second break-point connection structure 7 may reduce the force required for subsequent radial unsealing of the cover, the safety cover continues to rotate upward along the screwing structures, and then the thinner break-point connection structure is subjected to radial tension so that the break-point connection structure is torn and broken, followed by the safety cover rotating until disengaging from the nozzle element 8, thereby completing the unsealing.
In addition, the design of the upper sliding seat 101 and the lower sliding seat 801 is also conducive to preventing the safety cover from being accidentally unsealed by slight external force, because a strong force is required along the circumference to frictionally slide the upper sliding seat 101 to the top of the lower sliding seat 801, while the external friction during packaging and transportation is generally disordered and relatively slight, which generally is impossible to frictionally slide the upper sliding seat 101 to the top of the lower sliding seat 801.
Specifically, the cover body 11 that is screwed tightly to the nozzle element 8 has a certain movable space along an axial direction of the nozzle element 8, which reserves a movement space for the axial lifting of the cover body 11. It should be noted that since the break-point connection structure is an extremely small structure even if being designed with a qualified thickness, the space for movement is extremely small, i.e., it basically does not affect the stable connection of the screwing structures.
The lower sliding seat 801 and the second screwing structure do not overlap in the axial direction of the nozzle element 8, and the lower sliding seat 801 is located outside the second screwing structure; correspondingly, the upper sliding seat 101 and the first screwing structure do not overlap in the axial direction of the safety cover, and the upper sliding seat 101 is located outside the first screwing structure. The design of the upper sliding seat 101 and the lower sliding seat 801 is avoided from affecting and hindering the upward or downward rotation of the safety cover, which facilitates the design of a mold that is easy to de-mould.
In the embodiment, an outer side wall of the nozzle element 8 protrudes outward to form an upper annular protrusion 803 and a lower annular protrusion 804 that are distributed up and down, and the axial clearance is formed between the upper annular protrusion 803 and the lower annular protrusion 804.
Specifically, a top surface of the upper annular protrusion 803 protrudes upward to form the lower sliding seat 801.
Specifically, a lower edge of an outer side wall of the cover body 11 protrudes in the outer circumferential direction to form a circumferential annular protrusion, and the upper sliding seat 101 is formed by protruding downward from a bottom surface of the circumferential annular protrusion, so as to implement the above situation that the upper sliding seat 101 and the first screwing structure do not overlap in the axial direction of the safety cover and the upper sliding seat 101 is located outside the first screwing structure.
Specifically, an inner side wall of the cover body 11 is provided with at least one section of female threads 102 protruding toward a central axis of the cover body, and the female threads 102 serve as the first screwing structure;

an outer side wall of the nozzle element 8 is provided with at least one section of male threads 802 protruding outward a central axis of the nozzle element, and the male threads 802 serve as the second screwing structure;
the female threads 102 are adapted to the male threads 802.

In the embodiment, there are at least two upper sliding seats 101, which are evenly distributed along a circumference of a side wall of the safety cover; there are at least two lower sliding seats 801 corresponding to the upper sliding seats 101, and the lower sliding seats 801 are evenly distributed along a circumference of a side wall of the nozzle element 8. The evenly-distributed upper sliding seat 101 and the evenly-distributed lower sliding seat 801 make the axial pulling force on all the unsealing connection posts 701 relatively uniform during 'sudden' lifting, ensuring that each of the unsealing connection posts 701 is thinned.
In the embodiment, side surfaces of the upper sliding seat 101 and the lower sliding seat 801 that are in contact and friction with each other are tilted to match each other, and are respectively configured as an upper guide slope 101a and a lower guide slope 801a, so that the upper sliding seat 101 slides to the top end of the lower sliding seat 801 relatively smoothly and quickly, reducing the force exerted by the user, while achieving a ' sudden' lifting effect and prompting that the direction is the correct direction for unsealing the cover.
The other side surface of the upper sliding seat 101 opposite to the upper guide slope 101a is configured as an upper blocking straight surface 101b, the other side of the lower sliding seat 801 opposite to the lower guide slope 801ais configured as a lower blocking straight surface 801b, and the lower blocking straight surface 801b prevents the upper sliding seat 101 from passing through to remind the user that the direction is the wrong direction for unsealing the cover and the user to switch the direction of rotation and unsealing; at the same time, in the screwing and installation process on the production line, the upper and lower blocking straight surfaces may prevent the mechanical claws from over-rotating when screwing, which in turn may damage the cover body.
In the embodiment, the outer side wall of the nozzle element 8 is provided with at least one section of male threads 802 formed by protruding outwardly, and the male threads 802 serve as the first screwing structure; the inner side wall of the safety cover is provided with at least one section of female threads 102 formed by protruding inwardly, and the female threads 102 serve as the second screwing structure.
Specifically, a blocking block 805 is filled between a lower end portion of the male thread 802 and a side wall of the lower sliding seat 801 (referring to Fig. 11), the blocking block 805 is located on a circumferential movement track of the female thread outside the nozzle element 8, and an end portion of the female thread does not pass through the blocking block 805. Considering that the nozzle element 8 is essentially a small part, the lower sliding seat 801 located above is even more miniature and the upper sliding seat 101 has a greater impact on the lower sliding seat 801 when the user screws the cover incorrectly or the robot screws the cover during installation, the blocking block 805 is designed to enhance the structural strength of the lower sliding seat 801 and also has the function of sharing impacts.
Specifically, the cover body 11 of the embodiment is of a four-section cylinder structure; the cover body 11 includes a first cylinder, a second cylinder, a third cylinder and a fourth cylinder that are connected in sequence from top to bottom, and inner cylinder diameters of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder gradually expand.
A top portion of the first cylinder is closed, and a bottom portion thereof is open and connected with the second cylinder. The closed top surface of the first cylinder protrudes into an interior of the cylinder to form an inner clamping annular wall 105, and an outer diameter of the inner clamping annular wall 105 is adapted to an inner diameter of the outlet of the nozzle element 8; a diameter of an inner side wall of the first cylinder is adapted to an outer diameter of the outlet of the nozzle element 8, and the inner side wall of the first cylinder and the inner clamping annular wall 105 jointly clamp the inner and outer side walls of the outlet of the nozzle element 8, so as to seal the outlet of the nozzle element 8 for preventing the packaging contents from overflowing.
The closed top surface of the first cylinder further protrudes toward the interior of the cylinder to form a tip ring 106, the tip ring 106 is located between the inner clamping annular wall 105 and the inner side wall of the first cylinder, and a tip of the tip ring 106 closely contacts a top end of the outlet of the nozzle element 8 to further improve sealing and overflowing effect.
An inner wall of the second cylinder protrudes toward a central axis thereof to form the female threads 102, and the female threads 102 do not extend beyond the inner side wall of the first cylinder to avoid affecting the outlet of the nozzle 8 entering the first cylinder for sealing.
The female threads 102 are provided with two sections, and the two sections of the female threads 102 are symmetrical about a central axis of the second cylinder, so that the screwing may be started faster by aligning, the direction is stable during the screwing process and the embodiment is not easy to skew.
Correspondingly, the outer wall of the nozzle element 8 further protrudes in an outer circumferential direction to form two sections of male threads 802, and the two sections of the male threads 802 are adapted to the female threads 102.
The two upper sliding seats 101 are provided inside the third cylinder, and the two upper sliding seats 101 are symmetrical about a central axis of the third cylinder. A plurality of (specifically, 6) reinforcing blocks 107 are further provided inside the third cylinder, and the plurality of reinforcing blocks 107 and the two upper sliding seats 101 are evenly distributed in the circumferential direction; the reinforcing block 107 and the upper sliding seat 101 do not extend beyond the inner side wall of the second cylinder to avoid affecting the screwing of the second cylinder, and the reinforcing block 107 and the upper sliding seat 101 are stuck on the top surface of the upper annular protrusion 803.
After the safety cover is mounted to the suction nozzle, the lower sliding seat 801 is located between the upper sliding seat 101 and the reinforcing block 107 (referring to Fig. 10), and the lower guide slope 801a and the upper guide slope 101a are opposite to each other. The reinforcing blocks 107 may not pass through the lower blocking straight surface 801b and are arranged densely, which may quickly prompt the user that the direction of rotation for unsealing is wrong, and then to change the direction of unscrewing.
An upper portion of a cylinder wall of the fourth cylinder is hollowed out at intervals to form the second break-point connection structure 7, and the lower part thereof is configured as the harness ring 6, so as to implement the design of connecting the harness ring 6 and the cover body 11 through the second break-point connection structure 7, which facilitates integrated molding production.
An inner diameter of the fourth cylinder is slightly larger than an outer diameter of the upper annular protrusion 803, an inner side wall of the harness ring 6 protrudes toward the central axis to form a plurality of (specifically, 4) stuck blocks 601, and the stuck blocks 601 are stuck in the axial clearance, i.e., below the upper annular protrusion 803.
It can be seen from the above that in the embodiment, the interior of the cover body 11 is designed as a 'stepped' structure. The functions of each cylinder structure do not interfere with each other and are coordinated, and at the same time, the design is conducive to designing a mold that is easy to de-mould.
In the embodiment, at least two sets of twisted teeth are provided to be distributed along a circumferential direction between the harness ring 6 and the cover body 11, and each set of the twisted teeth includes upper twisted teeth 108 and lower twisted teeth 602 that are arranged in a misaligned manner along the circumferential direction; the upper twisted teeth 108 are formed by protruding downward from a bottom end of the cover body 11, the lower twist teeth 602 are formed by protruding upward from a top end of the harness ring 6, and axial end portions of the upper twisted teeth 108 and/or the lower twisted teeth 602 are provided with the unsealing connection post 701.
During the process of rotating and unsealing the cover, the harness ring 6 will be deformed to a certain extent due to pulling, and it is difficult for the deformed harness ring 6 to continue to rotate with the cover body 11, i.e., the upper twisted teeth 108 in this state hardly move or have a rotation speed much smaller than that of the cover body 11; further, the upper twisted teeth 108 collide with the lower twisted teeth 602, and the rotation of the upper twisted teeth 108 is blocked by the lower twisted teeth 602, which has an auxiliary effect of causing the unsealing connection post 701 to twist and deform, thereby making it easy to break.
More specifically, the outer side of the upper annular protrusion 803 is configured as an annular slope tilted outward and downward from the central axis of the nozzle element 8, which is helpful to guide the stuck blocks 601 to slide down and then install the stuck blocks in the axial clearance.
A bottom surface of the stuck block 601 is a tilted surface 601a tilted outward and downward from the central axis of the cover body 11, and is adapted to the annular slope, so that the installation of the stuck blocks 601 is smoother.
A top surface of the stuck block 601 is parallel or substantially parallel to a bottom surface of the upper annular protrusion 803, so that the installed harness ring 6 may not easily come out of the axial clearance, thereby ensuring that the safety cover is firmly connected with the nozzle element 8; at the same time, since the harness ring 6 repeatedly collides with the upper annular protrusion during multiple opening/closing processes, this design makes the collision between the two in surface contact, which may better disperse the impact force.
Specifically, a top surface of the lower annular protrusion 804 protrudes upward to form at least two symmetrical anti-deformation bumps 806, the anti-deformation bumps 806 are circumferentially distributed and located inside the harness ring, and the anti-deformation bump 806 does not hinder the rotation of the harness ring but has a restraining effect on the deformation of the harness ring during the pulling process to prevent excessive deformation of the harness ring.
The single anti-deformation bump 806 is located between the two stuck blocks 601 (referring to Fig. 10), and when there is no strong rotation for the safety cover, the rotation of the stuck block 601 is restricted by the anti-deformation bump 806, which, similar to the functions of the above upper and lower sliding seats, avoids as much as possible excessive relative rotation between the nozzle element 8 and the safety cover to maintain the stability of the installation. It should be noted that once there is an external force to rotate the safety cover, the tilted surface 601a of the stuck block 601 may slide through the stuck block 601, and the design of the anti-deformation bump 806 will not affect the rotation of the harness ring 6.
In the embodiment, a limiting base tab 807 is provided on the outer side of the nozzle element 8 in parallel below the lower annular protrusion 804, and a bottom surface of the limiting base tab 807 is in contact with an edge of the opening of the flexible packaging container for indicating the installation position of the nozzle element 8 on the flexible packaging container and preventing the nozzle element 8 from falling into the flexible packaging container during processing.
The safety cover that has been installed on the nozzle element 8 is no longer suitable for being used as a grabbing position. Therefore, a clamping neck groove is formed between the limiting base tab 807 and the lower annular protrusion 804 for clamping and transporting products.
A pressing tab portion 808 is provided below the limiting base tab 807 for bonding and sealing with the flexible packaging bags, and a surface of the pressing tab portion 808 is provided with raised stripes, which is beneficial to improving the firmness of adhesion.

Embodiment 3

With reference to Figs. 17 to 22, a main objective of the embodiment is to provide a suction nozzle assembly applied to the safety cover 1 of Embodiment 1, which includes a nozzle element A2 and the safety cover 1; the cover body 11 and an upper portion of the nozzle element A2 are detachably connected with each other through a rotating connection structure, so that the cover body 11 may be detachably screwed and covered onto a nozzle A21 of the nozzle element A2. The rotating connection structure is, for example, a threaded connection structure. The threaded connection structure includes an inner thread A32 provided in the cover body 11 and an outer thread A31 provided on the upper portion of the nozzle element A2. An inner top wall of the cover body 11 is provided with a sealing ring A17 that fits the nozzle A21 of the nozzle element A2. A bottom of the nozzle element A2 is provided with a joint portion A26 that sealably cooperates with the mouth of the flexible packaging bag.
With reference to Figs. 17 to 22, in an embodiment, at least one set of anti-rotation limiters A131 is provided circumferentially on an inner wall of the harness ring 6, and opposite outer sides of the two anti-rotation limiters A131 in the same set respectively form screwing guide portions A132; opposite inner sides of the two anti-rotation limiters A131 in the same set respectively form anti-rotation limiting portions A134, and an anti-rotation groove A130 is formed between the two anti-rotation limiters A131 in the same set; a circumference of the nozzle element A2 below the rotating connection structure is provided with an anti-rotation boss A22, and the nozzle element A2 is provided with a blocking edge A23 that limits the detachment of the anti-rotation limiter A131 from an upper direction above the anti-rotation boss A22; a width of the anti-rotation boss A22 is adapted to a width of the anti-rotation groove A130, and when the suction nozzle assembly is designed such that the harness ring 6 and the nozzle element A2 are relatively assembled in place, the anti-rotation boss A22 is stuck into the anti-rotation groove A130 of the harness ring 6; with the above arrangement, when the harness ring 6 is assembled on the nozzle element A2, through the cooperation of the anti-rotation groove A130 and the anti-rotation boss A22 of the nozzle element A2, the harness ring 6 is prevented from rotating circumferentially, so that when the cover body 11 is opened, the break-point structures A15 between the cover body 11 and the harness ring 6 are quickly disconnected.
With reference to Figs. 17 to 22, in an embodiment, the anti-rotation limiter A131 is provided with two or more sets, and the anti-rotation boss A22 is provided with two sets or more correspondingly; with the above arrangement, the assembly of the harness ring 6 and the nozzle element A2 is more stable and the anti-rotation effect is good.
With reference to Figs. 18 to 22, in an embodiment, the nozzle element A2 is provided with a limiting convex edge A24 that limits the detachment of the anti-rotation limiter A131 from a lower side below the anti-rotation boss A22; with the above arrangement, the anti-rotation limiter A131 is better limited between the limiting convex edge A24 and the blocking edge A23.
With reference to Figs. 18 to 22, in an embodiment, an upper surface of an outer periphery of the blocking edge A23 is provided with a guide slope A231 to facilitate the anti-rotation limiter A131 to be stuck into a bottom of the blocking edge; with the above arrangement, it is more convenient for the anti-rotation groove A130 to snap into the anti-rotation boss A22 below the blocking edge A23 of the nozzle element A2 when the harness ring 6 is assembled.
In an embodiment, an inner side of a bottom of the anti-rotation limiter A131 is provided with a stuck guide portion A133 to facilitate the snap-in of the nozzle element A2 into a position below the blocking edge A23; with the above arrangement, it is more convenient for the anti-rotation groove A130 to snap into the anti-rotation boss A22 below the blocking edge A23 of the nozzle element A2 when the harness ring 6 is assembled.
Based on the disclosure and teachings of the above description, those skilled in the art to which the present invention belongs can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

A safety cover, comprising a cover body and an expanded wall that are integrally formed with each other, the cover body being screwed and mounted at an opening of a container and sealing the opening of the container, wherein the expanded wall is arranged around the cover body, the expanded wall is connected with an outer periphery of the cover body through a hollow structure, and an axial air channel is formed between the cover body and the expanded wall;
the expanded wall is provided with at least one opening penetrating a side of the expanded wall to form a radial air channel, the opening extends through to one end of the expanded wall close to the container, and at least one deformable connection wiring harness of the same material is provided in the opening;

a first end of the connection wiring harness is located at any position within an outer surface of the expanded wall, a second end of the connection wiring harness extends downward to be directly or indirectly bound to a harness ring, and the harness ring is rotationally connected with the container;

the connection wiring harness does not extend beyond an outer side of the expanded wall;

when the expanded wall is pinched and rotated for unsealing, the harness ring rotatably connected with the container enables the connection wiring harness to rotate along with the expanded wall; when the cover body is unscrewed and separated from the container, the harness ring remains rotationally connected with the container, and remains connected with the cover body and the expanded wall through the connection wiring harness.
The safety cover according to claim 1, wherein the first end of the connection wiring harness is formed by protruding from a top wall or a side wall of the opening toward an inside of the opening, and the connection wiring harness does not extend beyond an inner side of the expanded wall;
the connection wiring harness is arranged close to the inner side of the expanded wall, and an inner side surface of the connection wiring harness is flush or substantially flush with an inner side surface of the expanded wall.
The safety cover according to claim 1 or 2, wherein the connection wiring harness is provided with a bending structure at a location within the opening, and a first break-point connection structure is provided and connected between the bending structure and the top wall and/or the side wall of the opening;
the connection wiring harness is provided with a plurality of U-shaped bends that are connected end to end at the location within the opening, and the plurality of U-shaped bends are arranged along an axial direction of the safety cover;

the U-shaped bend is provided with two straight sections and a bending section connecting the two straight sections, and the first break-point connection structure is provided and connected between the bending section and the side wall of the opening;

a location where the straight section is connected with the bending section is configured as a turning portion, and a width of the connection wiring harness gradually decreases when being close to the turning portion and gradually increases when being away from the turning portion;

the first break-point connection structure comprises a plurality of easily-breakable connection tabs, and a thickness of the easily-breakable connection tab gradually decreases in a direction from a wall surface of the opening to the connection wiring harness;

an injection molded end seat having a size larger than that of the easily-breakable connection tab is further provided between the easily-breakable connection tab and the wall surface of the opening.
The safety cover according to claim 3, wherein a structure of the expanded wall corresponding to a top of the opening is an elastic strip portion that may undergo elastic deformation;
when a user pinches the expanded wall for unsealing, the expanded wall provided with the elastic strip portion deforms slightly, and left and right side walls of the opening are simultaneously squeezed toward the connection wiring harness;

an outer wall structure of the expanded wall is a plurality of anti-slip ridges arranged in a circumferential array around a central axis, and the single anti-slip ridge is arranged to extend axially; outer edges of the anti-slip ridges are all designed in an arc shape, bottoms of the plurality of anti-slip ridges are provided with a C-shaped bottom, and the C-shaped bottoms are simultaneously connected with all the anti-slip ridges.
The safety cover according to claim 1, wherein the hollow structure is a plurality of arc-shaped tabs, and the plurality of arc-shaped tabs are evenly distributed around the cover body; a center of a top surface of the cover body is provided with a main positioning point, two auxiliary positioning points are symmetrically provided on both sides of the main positioning point, and the auxiliary positioning points correspond to a middle portion of a space between the two arc-shaped tabs;
the single arc-shaped tab is arranged along an axial direction of the cover body, and the plurality of arc-shaped tabs are bent and protruded in a screwing direction.
The safety cover according to claim 1, wherein a second break-point connection structure is provided between the cover body and the harness ring;
the second break-point connection structure comprises a plurality of unsealing connection posts, and a thickness of a location of the unsealing connection post close to the cover body gradually decreases;

at least two sets of twisted teeth are provided to be distributed along a circumferential direction between the harness ring and the cover body, and each set of the twisted teeth comprises upper twisted teeth and lower twisted teeth that are arranged in a misaligned manner along the circumferential direction; the upper twisted teeth are formed by protruding downward from a bottom end of the cover body, the lower twist teeth are formed by protruding upward from a top end of the harness ring, and axial end portions of the upper twisted teeth and/or the lower twisted teeth are provided with the unsealing connection post.
A suction nozzle assembly, suitable for flexible packaging containers, comprising a nozzle element and the safety cover according to any one of claims 1 to 6;
the nozzle element is fixedly mounted on the flexible packaging container, with one part wrapped and fixed inside the flexible packaging container and the other part exposed to the outside of the flexible packaging container and screwed on to the safety cover;

the cover body is provided with a first screwing structure, and the nozzle element is provided with a second screwing structure; the first screwing structure is adapted to the second screwing structure, the cover body is screwed on the nozzle element, and the cover body covers and seals an outlet of the nozzle element;

the nozzle element is provided with an axial clearance for an axial movement of the harness ring, and the harness ring is rotatably sleeved in the axial clearance;

the safety cover is provided with at least one upper sliding seat at a location lower than a lower end of the first screwing structure, and the nozzle element is provided with at least one lower sliding seat at a location lower than a lower end of the second screwing structure;

when unsealed, the cover body is screwed to the nozzle element, and the upper sliding seat and the lower sliding seat are misaligned and intersect along an outer circumferential direction of the nozzle element.
The suction nozzle assembly according to claim 7, wherein the cover body that is screwed tightly to the nozzle element has a certain movable space along an axial direction of the nozzle element;
the lower sliding seat and the second screwing structure do not overlap in the axial direction of the nozzle element, and the lower sliding seat is located outside the second screwing structure; correspondingly, the upper sliding seat and the first screwing structure do not overlap in the axial direction of the safety cover, and the upper sliding seat is located outside the first screwing structure;

a lower edge of an outer side wall of the cover body protrudes in the outer circumferential direction to form a circumferential annular protrusion, and the upper sliding seat is formed by protruding downward from a bottom surface of the circumferential annular protrusion;

an outer side wall of the nozzle element protrudes outward to form an upper annular protrusion and a lower annular protrusion that are distributed up and down, and the axial clearance is formed between the upper annular protrusion and the lower annular protrusion; a top surface of the upper annular protrusion protrudes upward to form the lower sliding seat;

an inner side wall of the cover body is provided with at least one section of female threads protruding toward a central axis of the cover body, and the female threads serve as the first screwing structure; an outer side wall of the nozzle element is provided with at least one section of male threads protruding outward a central axis of the nozzle element, and the male threads serve as the second screwing structure; the female threads are adapted to the male threads;

a blocking block is filled between a lower end portion of the male thread and a side wall of the lower sliding seat, the blocking block is located on a circumferential movement track of the female thread outside the nozzle element, and an end portion of the female thread may not pass through the blocking block;

there are at least two upper sliding seats, which are evenly distributed along a circumference of a side wall of the safety cover; there are at least two lower sliding seats corresponding to the upper sliding seats, and the lower sliding seats are evenly distributed along a circumference of a side wall of the nozzle element;

side surfaces of the upper sliding seat and the lower sliding seat that are in contact and friction with each other are tilted to match each other, and are respectively configured as an upper guide slope and a lower guide slope; the other side surface of the upper sliding seat opposite to the upper guide slope is configured as an upper blocking straight surface, the other side of the lower sliding seat opposite to the lower guide slope is configured as a lower blocking straight surface, and the lower blocking straight surface prevents the upper sliding seat from passing through.
The suction nozzle assembly according to claim 8, wherein the cover body is of a four-section cylinder structure; the cover body comprises a first cylinder, a second cylinder, a third cylinder and a fourth cylinder that are connected in sequence from top to bottom, and inner cylinder diameters of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder gradually expand;
a top portion of the first cylinder is closed, and a bottom portion thereof is open and connected with the second cylinder; the closed top surface of the first cylinder protrudes into an interior of the cylinder to form an inner clamping annular wall, and an outer diameter of the inner clamping annular wall is adapted to an inner diameter of the outlet of the nozzle element; a diameter of an inner side wall of the first cylinder is adapted to an outer diameter of the outlet of the nozzle element, and the inner side wall of the first cylinder and the inner clamping annular wall jointly clamp the inner and outer side walls of the outlet of the nozzle element;

the closed top surface of the first cylinder further protrudes toward the interior of the cylinder to form a tip ring, the tip ring is located between the inner clamping annular wall and the inner side wall of the first cylinder, and a tip of the tip ring closely contacts a top end of the outlet of the nozzle element;

an inner wall of the second cylinder protrudes toward a central axis thereof to form the female threads, and the female threads do not extend beyond the inner side wall of the first cylinder;

the female thread is provided with two sections, and the two sections of the female threads are symmetrical about the central axis of the second cylinder; correspondingly, the outer wall of the nozzle element further protrudes in an outer circumferential direction to form two sections of male threads, and the two sections of the male threads are adapted to the female threads;

the two upper sliding seats are provided inside the third cylinder, and the two upper sliding seats are symmetrical about a central axis of the third cylinder; a plurality of reinforcing blocks are further provided inside the third cylinder, and the plurality of reinforcing blocks and the two upper sliding seats are evenly distributed in the circumferential direction; the reinforcing block and the upper sliding seat do not extend beyond the inner side wall of the second cylinder to avoid affecting the screwing of the second cylinder, and the reinforcing block and the upper sliding seat are stuck on the top surface of the upper annular protrusion;

after the safety cover is mounted to the suction nozzle, the lower sliding seat is located between the upper sliding seat and the reinforcing block, and the lower guide slope and the upper guide slope are opposite to each other; the reinforcing block may not pass through the lower blocking straight surface;

an upper portion of a cylinder wall of the fourth cylinder is hollowed out at intervals to form the second break-point connection structure, and the lower part thereof is configured as the harness ring;

an inner diameter of the fourth cylinder is larger than an outer diameter of the upper annular protrusion, an inner side wall of the harness ring protrudes toward the central axis to form a plurality of stuck blocks, and the stuck blocks are stuck in the axial clearance.
The suction nozzle assembly according to claim 9, wherein an outer side of the upper annular protrusion is configured as an annular slope tilted outward and downward from the central axis of the nozzle element; a bottom surface of the stuck block is a tilted surface tilted outward and downward from the central axis of the cover body, and is adapted to the annular slope;
a top surface of the stuck block is parallel or substantially parallel to a bottom surface of the upper annular protrusion;

a top surface of the lower annular protrusion protrudes upward to form at least two symmetrical anti-deformation bumps, the anti-deformation bumps are circumferentially distributed and located inside the harness ring, and the anti-deformation bump does not hinder the rotation of the harness ring;

the single anti-deformation bump is located between the two stuck blocks, and when there is no strong rotation for the safety cover, the rotation of the stuck block is restricted by the anti-deformation bump;

a limiting base tab is provided on the outer side of the nozzle element in parallel below the lower annular protrusion, and a bottom surface of the limiting base tab is in contact with an opening edge of the flexible packaging container;

a clamping neck groove is formed between the limiting base tab and the lower annular protrusion, a pressing tab portion is provided below the limiting base tab, and a surface of the pressing tab portion is provided with raised stripes.
A suction nozzle assembly, comprising a nozzle element and the safety cover according to any one of claims 1 to 6;
the cover body and an upper portion of the nozzle element are detachably connected with each other through a rotating connection structure, so that the cover body may be detachably screwed and covered onto a nozzle of the nozzle element;

at least one set of anti-rotation limiters is provided circumferentially on an inner wall of the harness ring, and opposite outer sides of the two anti-rotation limiters in the same set respectively form screwing guide portions; opposite inner sides of the two anti-rotation limiters in the same set respectively form anti-rotation limiting portions, and an anti-rotation groove is formed between the two anti-rotation limiters in the same set;

a circumference of the nozzle element below the rotating connection structure is provided with an anti-rotation boss, and the nozzle element is provided with a blocking edge that limits the detachment of the anti-rotation limiter from an upper direction above the anti-rotation boss; a width of the anti-rotation boss is adapted to a width of the anti-rotation groove, and when the suction nozzle assembly is designed such that the harness ring and the nozzle element are relatively assembled in place, the anti-rotation boss is stuck into the anti-rotation groove of the harness ring.
The suction nozzle assembly according to claim 11, wherein the anti-rotation limiter is provided with two or more sets, and the anti-rotation boss is provided with two sets or more correspondingly.
The suction nozzle assembly according to claim 11, wherein the nozzle element is provided with a limiting convex edge that limits the detachment of the anti-rotation limiter from a lower side below the anti-rotation boss.
The suction nozzle assembly according to claim 11, wherein an upper surface of an outer periphery of the blocking edge is provided with a guide slope to facilitate the anti-rotation limiter to be stuck into a bottom of the blocking edge.