CN117184644A - A safety cover and its suction nozzle assembly - Google Patents

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

A safety cover and its suction nozzle assembly

Technical field

The invention belongs to the field of packaging technology, and specifically relates to a safety cover and its suction nozzle assembly.

Background technique

The drinking port or discharge port 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 discharge port.

However, in the field of children's products, especially in the field of children's food, small and individually provided sealing caps present safety hazards. Young children generally show a strong interest in colorful food packaging and play with it repeatedly over a period of time. Especially during the "detail-sensitive period", "oral period", "teething period", etc., they will show signs of small things. If children show strong interest, they will try to stuff all the small-volume items they can get into their mouths, and directly use their sense of smell and taste to explore and recognize things. The small-volume and sealed lids that can be completely detached from the packaging container are extremely easy to attract children's attention. , and then it is easy for children to put it into their mouths and swallow them 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, environmental protection concepts and sustainable development are being widely advocated and applied. Sealing caps that can be completely separated from the packaging container are easily discarded separately, making it difficult to combine the sealing cap and packaging container. Recycling has problems of resource waste and environmental pollution.

In order to solve the above problems, the patent document with application number CN201020205935.0 discloses a new bottle cap that can be integrated with plastic bottles such as mineral water bottles and beverage bottles. The bottle cap includes an upper part of the bottle cap, a lower part of the bottle cap, and at least two easily accessible parts. The torn connection point and the connecting rib connecting the upper part of the bottle cap and the lower part of the bottle cap, where the lower part of the bottle cap is arranged under the snap ring at the bottle mouth of the bottle body, the upper part of the bottle cap is threadedly connected to the bottle mouth, and the connection point can be torn away from The lower part of the bottle cap and the bottle mouth, and the upper part of the bottle cap are still connected to the bottle body through connecting ribs after they are separated from the bottle mouth.

The above-mentioned prior art adds connecting ribs to keep the bottle cap in contact with the bottle body after opening, which can prevent the bottle cap from being discarded separately, which is conducive to recycling. At the same time, children cannot swallow the bottle cap even if they put it into their mouths. Basically, This can avoid the safety hazard of suffocation caused by swallowing.

However, the connecting ribs of this prior art are C-shaped and protrude from the bottle mouth, which has the following shortcomings:

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

The bottle caps in the existing mature production flow line involve multiple screening, transportation and other procedures, including transporting a large number of bottle caps to the vibrating plate, which transports and screens the bottle caps to unify the orientation of the bottle caps to facilitate subsequent mechanical claw grabbing. The mechanical claw grabs the bottle cap and installs it into the packaging container. That is, the structure and parameter design of the entire production line are precisely designed for the size of the bottle cap without protruding structure. Adding protruding connecting ribs will change the outer circumferential size of the bottle cap. and center of gravity, etc. The original production line required a lot of changes and debugging to adapt to bottle caps with protruding connecting ribs, which was extremely costly.

The impact of convex connecting ribs on the production line includes but is not limited to the following scenarios:

First of all, the width of the transportation track at the back of the vibrating plate is set according to the outer circumferential size of a single bottle cap. The bottle caps are sorted into a closely arranged single row for transportation on the track. Adding protruding connecting ribs will affect the sealing caps on the vibrating plate track. The arrangement density and transportation stability require the entire "cover management" assembly line to be redesigned and debugged for the convex connecting ribs, which is extremely costly;

Secondly, when passing through the "orientation screening station" of the vibration plate, the protruding connecting ribs will cause some bottle caps with the correct orientation to be screened out of the conveyor track and transported into the vibration plate again, affecting the accuracy of screening and production efficiency;

Finally, the protruding C-shaped connecting ribs can easily interfere with the subsequent movement, grabbing and capping of the mechanical claw. For example, the originally designed capping spacing obviously needs to be increased so that adjacent capping stations do not interact with each other. interference.

From the above simple example, we can see that although the bottle cap only adds protruding connecting ribs, it will cause the "cap grabbing" assembly line, "capping" assembly line and other related equipment to need to be modified or debugged.

2. The convex connecting ribs are easily scratched and pulled by external forces during the packaging, transportation, and shelving of finished products, which may cause scratches, burrs, breaks and other problems, affecting product packaging quality, especially appearance packaging quality.

3. Although the design of connecting ribs can basically avoid the risk of swallowing and suffocation, it essentially only has one layer of safety insurance. During repeated play with children, unexpected situations may occur (such as strong pulling, pets biting off, etc.) that may cause the connection to The tendon breaks, and the bottle cap can completely detach from the bottle body, causing the risk of swallowing and suffocation again.

Contents of the invention

In view of the problems in the related art, the present invention proposes a safety cover and its suction nozzle assembly to overcome the above technical problems existing in the existing related art.

The technical solution of the present invention is implemented as follows:

A safety cover includes an integrally formed sealing cover body and an expanded wall. The sealing cover body is screwed and installed at the opening of the container and seals the opening of the container. The expanded wall surrounds the sealing cover body, and the The expanded wall is connected to the outer periphery of the sealing cover through a hollow structure, and an axial air channel is formed between the sealing cover and the expanded wall;

The expanded wall is provided with at least one opening that runs through its side to form a radial air passage. The opening extends through to an end of the expanded wall close to the container. There is at least one deformable, simultaneous air passage inside the opening. Material connection harness;

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

The connection harness does not extend beyond the outside of the expanded wall;

When the expanded wall is grasped and rotated to open the seal, the bundle ring connected to the container is rotated so that the connecting wire harness can rotate with the expanded wall; when the sealing cover is unscrewed and separated from the container, the bundle ring remains rotationally connected to the container. , and the sealing cover body and the expanded wall are kept connected through the connecting wire harness.

Preferably, the first end of the connecting wire harness is formed by protruding from the top wall or side wall of the opening toward the inside of the opening, and the connecting wire harness does not extend beyond the inside of the expanded wall;

The connecting wire harness is disposed close to the inner side of the expanded wall, and the inner side of the connecting wire harness is flush or substantially flush with the inner side of the expanded wall.

Preferably, the connection harness is provided with a bending structure at a location within the opening, and a first breakpoint connection structure is provided between the bending structure and the top wall and/or side wall of the opening;

The connection harness has a plurality of U-shaped bends connected end to end in the opening, and a plurality of the U-shaped bends are arranged along the axial direction of the safety cover;

The U-shaped bend has two straight sections and a curved section connecting the two straight sections, and a first breakpoint connection structure is provided between the curved section and the side wall of the opening;

The connection between the straight section and the curved section is set as a turning section. The width of the connecting wire harness gradually decreases when it is close to the turning section, and the width gradually increases when it is away from the turning section;

The first breakpoint connection structure includes a plurality of easily breakable tabs, and the thickness of the easily breakable tabs gradually decreases from the wall of the opening toward the direction of the connecting wire harness;

An injection molded end seat having a size larger than that of the easily breakable piece is also provided between the easily breakable piece and the wall of the opening.

Preferably, the structure of the expanded wall corresponding to the top of the opening is an elastically deformable elastic strip;

When a user grasps and pinches the expanded wall to open the seal, the expanded wall provided with the elastic strip portion is slightly deformed, and the left and right walls of the opening are simultaneously squeezed toward the connecting wire harness;

The outer wall structure of the expanded wall is a plurality of anti-skid protrusions arranged in a circumferential array around the central axis. A single anti-skid protrusion extends along the axial direction. The outer edges of the anti-skid protrusions are all designed with arcs. Several anti-skid protrusions are arranged in a circular arc design. The bottom of the strip is provided with a C-shaped bottom, and the C-shaped bottom is connected to all the anti-slip convex strips at the same time.

Preferably, the hollow structure is a plurality of arc-shaped pieces, and the plurality of arc-shaped pieces are evenly distributed around the sealing cover body. A main positioning point is provided at the center of the top surface of the sealing cover body, and the main positioning point is Two auxiliary positioning points are symmetrically provided on both sides, and the auxiliary positioning points correspond to the middle of the space between the two arc-shaped pieces;

The single arc-shaped piece is arranged along the axial direction of the sealing cover body, and several of the arc-shaped pieces are bent and protruded in the tightening direction.

Preferably, a second breakpoint connection structure is provided between the sealing cover and the beam ring;

The second breakpoint connection structure includes a plurality of unsealing connecting posts, and the thickness of the unsealing connecting posts near the sealing cover gradually decreases;

There are at least two sets of twist tooth sets distributed along the circumferential direction between the beam ring and the sealing cover. Each set of the twist tooth sets includes upper twist teeth and lower twist teeth disposed offset along the circumferential direction. The twist teeth are formed by protruding downward from the bottom end of the seal cover body, the lower twist teeth are formed by protruding upward from the top end of the bundle ring, and the axial ends of the upper twist teeth and/or the lower twist teeth are The unsealing connection post is provided.

A nozzle assembly suitable for flexible packaging containers, including a spout and the above-mentioned safety cover;

The spout is fixedly installed on the flexible packaging container, part of the spout is wrapped and fixed inside the flexible packaging container, and the other part of the spout is exposed to the outside of the flexible packaging container and is screwed to the safety cover;

The sealing cover is provided with a first screwing structure, the mouthpiece is provided with a second screwing structure, the first screwing structure is adapted to the second screwing structure, and the sealing cover is screwed For the nozzle piece, the sealing cover covers and seals the outlet of the nozzle piece;

The nozzle piece is provided with an axial gap for the axial movement of the bundle ring, and the bundle ring is rotatably 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 screw-connected structure, and the mouth piece is provided with at least one lower sliding seat at a position lower than the lower end of the second screw-connected structure;

When unopened, the sealing cover body is screwed to the spout piece, and the upper sliding seat and the lower sliding seat are offset and intersect along the outer circumferential direction of the spout piece.

Preferably, the sealing cover screwed onto the nozzle piece has a certain movable space along the axial direction of the nozzle piece;

The sliding seat and the second rotating structure do not overlap in the axial direction of the nozzle piece, and the sliding seat is located outside the second rotating structure; correspondingly, the upper sliding seat and the first rotating structure The safety cover does not overlap in the axial direction, and the upper sliding seat is located outside the first rotating structure;

The lower edge of the outer side wall of the sealing cover protrudes toward the outer circumference to form a circumferential annular protrusion, and the upper sliding seat is formed by a bottom surface of the circumferential annular protrusion protruding downward;

The outer wall of the nozzle protrudes outward to form an upper ring protrusion and a lower ring protrusion distributed up and down, and the axial gap is formed between the upper ring protrusion and the lower ring protrusion; the upper ring The top surface of the protrusion protrudes upward to form the sliding seat;

The inner wall of the sealing cover is provided with at least one section of internal convex threads protruding toward its central axis, and the internal convex threads serve as the first screw connection structure; the outer wall of the nozzle is provided with at least one section An external convex thread protruding in the direction of its central axis, the external convex thread serves as the second screw connection structure; the internal convex thread and the external convex thread are adapted;

A blocking block is filled between the lower end of the external convex thread and the side wall of the lower seat. The blocking block is located on the circumferential movement track of the internal convex thread outside the mouth piece. The end cannot pass through the blocking block;

There are at least two upper sliding seats, and they are evenly distributed along the circumference of the 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 arranged along the nozzle. The side walls of the piece are evenly distributed around the circumference;

The sides of the upper sliding seat and the lower sliding seat that are in contact and friction with each other are inclined to match each other, and are respectively set as upper guide slopes and lower guide slopes; the other side of the upper slide seat opposite to the upper guide slope is set as an upper blocking surface The other side of the lower slide seat opposite to the lower guide slope is set as a lower blocking straight surface, and the lower blocking straight surface prevents the upper sliding seat from passing.

Preferably, the sealing cover has a four-section cylinder structure, and the sealing cover includes a first cylinder, a second cylinder, a third cylinder and a fourth cylinder connected in sequence from top to bottom. The inner cylinder diameters of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder gradually expand;

The top of the first cylinder is closed, and the bottom is open and connected to the second cylinder. The closed top of the first cylinder protrudes toward the inside of the cylinder to form an inner clamping ring wall. The inner clamping ring wall is The outer diameter is adapted to the inner diameter of the outlet of the nozzle piece, the inner wall diameter of the first cylinder is adapted to the outer diameter of the outlet of the nozzle piece, and the inner wall of the first barrel is in contact with the inner clamp The ring wall jointly clamps the inner and outer walls of the discharge port of the nozzle piece;

The closed top of the first cylinder also protrudes toward the inside of the cylinder to form a tip ring. The tip ring is located between the inner ring wall and the inner wall of the first cylinder. The tip of the tip ring Closely contact the top of the discharge port of the nozzle piece;

The inner side wall of the second cylinder protrudes in the direction of its central axis to form the external convex thread, and the outer convex thread does not exceed the inner side wall of the first cylinder;

The external convex thread is provided with two sections, and the two sections of the external convex thread are symmetrical about the central axis of the second cylinder; correspondingly, the outer wall of the nozzle piece also protrudes toward the outer circumferential direction to form two sections. The external convex threads of the two sections are adapted to the internal convex threads;

Two upper sliding seats are provided inside the third cylinder, and the two upper sliding seats are symmetrical about the central axis of the third cylinder; several reinforcements are also provided inside the third cylinder. block, a plurality of reinforcing blocks and two upper sliding seats are evenly distributed around the circumference, and the reinforcing blocks and the upper sliding seats do not exceed the inner wall of the second cylinder to avoid affecting the rotation of the second cylinder. , the reinforcing block and the upper sliding seat are stuck on the top surface of the upper ring protrusion;

The safety cover is installed after the suction nozzle, the 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; the reinforcement block cannot pass through the lower card block the direct face;

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

The inner diameter of the fourth cylinder is larger than the outer diameter of the upper ring protrusion, and the inner wall of the beam ring protrudes toward the central axis to form a plurality of blocking blocks, and the blocking blocks are stuck in the axial gap.

Preferably, the outer side of the upper annular protrusion is formed as an annular slope that is inclined outward and downward from the central axis of the mouthpiece; The downwardly inclined inclined surface is adapted to the ring inclined surface;

The top surface of the clamping block is parallel or substantially parallel to the bottom surface of the upper ring protrusion;

The top surface of the lower ring protrusion protrudes upward to form at least two symmetrical anti-deformation protrusions. The anti-deformation protrusions are circumferentially distributed and located inside the beam ring. The anti-deformation protrusions do not hinder the beam. the rotation of the ring;

A single anti-deformation convex block is located between the two said clamping blocks. When there is no strong rotation of the safety cover, the rotation of the said clamping block is restricted by the anti-deformation convex block;

A limiting base piece is provided on the outside of the spout piece in parallel below the lower annular protrusion, and the bottom surface of the limiting base piece is in contact with the opening edge of the flexible packaging container;

A clamping neck groove is formed between the limiting base sheet and the lower annular protrusion. A pressing piece is provided below the limiting base, and the surface of the pressing piece has raised stripes.

Beneficial effects of the present invention:

First of all, the present invention sets the connection harness to keep the safety cover and the container connected after opening to prevent children from eating by mistake. This is the first safety insurance and prevents the sealing cover from being discarded separately, which facilitates recycling;

Secondly, considering that even if the connection harness is connected, there may still be unexpected situations that cause the connection harness to break (for example, it is torn off by force when a child repeatedly plays with it, etc.), and the invention is completely separated from the container. Therefore, the invention is also provided with an expansion cable. The expanded wall can effectively expand the volume of the present invention. The size standard of the expanded wall is much larger than the respiratory tract of an average child. Even if a child accidentally eats the present invention with the connecting wire harness broken and enters the mouth, it will be unable to function due to the excessive volume. Swallow it into the respiratory tract to avoid the risk of suffocation. It is designed for those who cannot swallow the invention. This is the second safety insurance;

Further consideration is that older children, teenagers or pets may accidentally swallow the present invention in some unexpected situations. Therefore, the present invention is also provided with the axial airway and the radial airway for air flow to pass through. In extreme cases, even if the present invention is accidentally swallowed, breathing can be maintained until the accidentally swallowed subject seeks medical attention to avoid the risk of suffocation. It is designed for subjects who can swallow the present invention. This is the third safety insurance;

Finally, the connection harness of the present invention is "side-hidden", that is, it does not exceed the outside of the expanded wall, that is, the outer circumferential size of the cover has basically not changed, and the original production assembly line can basically continue to be used without changing the "cover management" assembly line. , cover clearance, and no protruding structure that affects mechanical claw grabbing, etc., effectively controlling the cost of producing new products; at the same time, the "side-hidden" connection harness is not susceptible to external scratches during packaging, transportation, shelving, etc. , pulling, etc., to avoid the connection harness from breaking or causing scratches, burrs, etc., and ensuring the packaging quality of the product.

Description of the drawings

Figure 1 is one of the structural schematic diagrams of the safety cover of the present invention;

Figure 2 is the second structural schematic diagram of the safety cover of the present invention;

Figure 3 is the third structural schematic diagram of the safety cover of the present invention;

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

Figure 5 is one of the structural schematic diagrams of the suction nozzle assembly of the present invention;

Figure 6 is an enlarged view of point A in Figure 5;

Figure 7 is the second structural schematic diagram of the suction nozzle assembly of the present invention;

Figure 8 is an enlarged view of B in Figure 7;

Figure 9 is a schematic diagram of the unsealing nozzle assembly of the present invention;

Figure 10 is the third structural schematic diagram of the suction nozzle assembly of the present invention (part of the structure is cut away);

Figure 11 is a schematic structural diagram of the nozzle piece of the present invention;

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

Figure 13 is the fourth structural schematic diagram of the safety cover of the present invention;

Figure 14 is the fifth structural schematic diagram of the safety cover of the present invention;

Figure 15 is the sixth structural schematic diagram of the safety cover of the present invention;

Figure 16 is the seventh structural schematic diagram of the safety cover of the present invention.

Reference signs

1. Sealing cover; 101. Upper sliding seat; 101a. Upper guide slope; 101b. Upper blocking straight surface; 102. Internal convex thread; 103. Main positioning point; 104. Secondary positioning point; 105. Inner clamping ring wall; 106. Tip ring; 107. Strengthening block; 108. Upper twist tooth;

2. Curved piece;

3. Wall expansion; 301. Spring strip part; 302. C-shaped bottom; 303. Opening;

4. Connection harness; 401, first end; 402, second end; 403, bending section; 403a, steering part;

5. First break point connection structure; 501, easy-to-break connector; 502, injection molded end seat;

6. Beam ring; 601, clamping block; 601a, inclined surface; 602, lower twist tooth;

7. Second breakpoint connection structure; 701. Unsealing connecting column;

8. Nozzle piece; 801, lower seat; 801a, lower guide slope; 801b, lower blocking straight surface; 802, external convex thread; 803, upper ring protrusion; 804, lower ring protrusion; 805, blocking block; 806 , anti-deformation bump; 807, limiting substrate; 808, pressing piece part.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

Example 1

Referring to Figures 1 to 16, a safety cover includes an integrally formed sealing cover body 1 and an expansion wall 3. The sealing cover body 1 is screwed and installed at the opening 303 of the container and seals the opening 303 of the container. The expansion wall 3 The wall 3 surrounds the sealing cover 1 . The expanded wall 3 is connected to the outer periphery of the sealing cover 1 through a hollow structure. An axial air channel is formed between the sealing cover 1 and the expanded wall 3 .

The expanded wall 3 is provided with at least one opening 303 penetrating its side to form a radial air channel. The opening 303 extends to one end of the expanded wall 3 close to the container. There is at least one opening 303 inside the expansion wall 3 . Deformable, same-material connection harness 4;

The first end 401 of the connection harness 4 is located at any position within the outer surface of the expanded wall 3;

Since this embodiment requires rotation to unseal, in order to prevent the connection wire harness 4 from being entangled with the sealing cover 1 or the container opening 303 during the unscrewing operation, and to avoid the design of the connection wire harness 4 from hindering the unscrewing operation, the connection is The second end 402 of the wire harness 4 extends downward and is directly or indirectly bound to the harness ring 6, which is rotatably connected to the container;

The connection harness 4 does not extend beyond the outside of the expanded wall 3 .

When the expanded wall 3 is grasped and rotated to unseal, the bundle ring 6 connected to the container is rotated so that the connecting wire harness 4 can rotate with the expanded wall 3 to avoid the design of the connecting wire harness 4 from hindering the unsealing operation; the sealing cover 1 is When unscrewed and separated from the container, the harness ring 6 remains rotationally connected to the container, and remains connected to the sealing cover 1 and the expanded wall 3 through the connection harness 4 .

First, in this embodiment, the connection harness 4 is provided to keep the safety cover and the container connected after opening to prevent children from accidentally eating it. This is the first safety insurance and prevents the sealing cover 1 from being discarded alone, which facilitates recycling;

Secondly, considering that even if the connection harness 4 is connected, there may still be unexpected situations that cause the connection harness 4 to break (for example, it is torn off by force when a child repeatedly plays with it, etc.), and then this embodiment is completely separated from the container. Therefore, this embodiment An expanded wall 3 is also provided. The expanded wall 3 can effectively expand the volume of this embodiment. The size standard of the expanded wall 3 is much larger than the respiratory tract of an average child. Even if the child accidentally eats the broken connecting wire harness 4 of this embodiment, The mouth is also too large to be swallowed into the respiratory tract to avoid the risk of suffocation. It is designed for objects that cannot swallow this embodiment. This is the second safety insurance;

To further consider, older children, teenagers or pets may accidentally swallow this embodiment in some unexpected situations. Therefore, this embodiment is also provided with the axial airway and the radial airway to supply air flow. Through, in extreme circumstances, even if this embodiment is accidentally swallowed, breathing can be maintained until the accidentally swallowed subject seeks medical attention, avoiding the risk of suffocation. It is designed for subjects who can swallow this embodiment. This is the third safety insurance;

Finally, the connection harness 4 of this embodiment is "side-hidden", that is, it does not exceed the outside of the expanded wall 3, that is, the outer circumferential size of the cover has basically not changed, and the original production assembly line can basically continue to be used without changing the "management". The "cover" assembly line, the cover installation gap, and the protruding structure do not affect the mechanical claw grabbing, etc., effectively controlling the cost of producing new products; at the same time, the "side hidden" connection harness 4 is not susceptible to damage during packaging, transportation, shelving, etc. External scratching, pulling, etc. can prevent the connecting wire 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 a similar peripheral size to the expanded wall 3. Therefore, the "side-hidden" connection harness 4 design allows the original production line to continue to be used for production. However, in this implementation The core design of the example, "side-hidden" connection harness 4, is also applicable to other types of bottle caps, making it possible for the assembly line originally used to produce bottle caps without connection harness 4 to basically not need to be modified.

In actual production, the mechanical claw needs to extend into the axial airway to grasp this embodiment. Therefore, the first end 401 of the connecting wire harness 4 is directed from the top wall or side wall of the opening 303 toward the inside of the opening 303 Protrudingly formed, the connection harness 4 does not exceed the inside of the expanded wall 3 to avoid interfering with the grasping of the mechanical claw.

The connecting wire harness 4 can be a straight structure extending in the opening 303 until it is connected to the container (as shown in Figure 16). However, it is preferred that the connecting wire harness 4 is provided with a curved structure in the opening 303, so that this embodiment can be unsealed. Finally, the connecting wire harness 4 is deformed and stretched to move this embodiment as far away from the opening 303 of the container as possible to avoid contaminating the contents of the container, or disturbing or scratching the user's lips or facial skin when drinking.

The connecting wire harness 4 is freely bent in 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 opened, the connection between the bending structure and the top wall and/or side wall of the opening 303 is A first breakpoint connection structure 5 is provided in between, and the breakpoint connection structure also has the function of constraining and maintaining the shape of the connection harness 4 before unsealing.

Specific designs of the bending structure and the first breakpoint connection structure include but are not limited to those shown in Figures 13 to 16.

Specifically, the connection harness 4 of this embodiment has several (3) U-shaped bends connected end to end in the opening 303 (as shown in Figure 1), and several of the U-shaped bends are along the safety The advantages of this design are: first, the length of the connecting wire harness 4 can be extended as much as possible within the limited space of the opening 303; secondly, the regular U-shaped arrangement facilitates mold opening and production; finally, the After the design tensile deformation, the stress on each part is relatively uniform compared to other curved structures, there is no obvious stress concentration area, and it is not easy to break.

The U-shaped bend has two straight sections and a curved section 403 connecting the two straight sections. A first breakpoint connection structure is provided between the curved section 403 and the side wall of the opening 303 .

More specifically, the first breakpoint connection structure includes a plurality (3) of easily breakable tabs 501, the thickness of which is gradually reduced from the wall of the opening 303 toward the direction of the connecting wire harness 4 ( Referring to Figure 8), the broken easily breakable tab 501 is retained on the wall of the opening 303 and is not easily touched, that is, the connection harness 4 is prevented from being scratched by the protruding easily breakable tab 501 after being opened. User skin.

There is also an injection molding end seat 502 slightly larger than the easy-to-break connection piece 501 between the easy-to-break connection piece 501 and the wall of the opening 303. The width of the mold corresponding to the easy-to-break connection piece 501 is extremely thin, making it difficult to inject the slurry. To fill the mold, a groove structure corresponding to the injection molding end seat 502 is provided on the mold, which is helpful to guide the slurry to flow into and fill the mold position corresponding to the breakable piece 501.

In this embodiment, the structure of the expanded wall 3 corresponding to the top of the opening 303 is an elastic deformable elastic bar portion 301, that is, the bottom surface of the elastic bar portion 301 is the top wall of the opening 303. When the user grasps the expanded wall 3 to open it, the expanded wall 3 provided with the spring portion 301 is slightly deformed, and the left and right side walls of the opening 303 are simultaneously squeezed toward the connecting wire harness 4. It is beneficial to break the easily breakable connecting piece 501, making the opening of this embodiment convenient and quick.

The connection between the straight section and the curved section 403 is set as a turning part 403a. The width of the connecting wire harness 4 gradually decreases as it approaches the turning part 403a, ensuring the flexibility of the connecting wire harness 4 when it is deformed and stretched. The width of the turning portion 403a gradually increases to ensure the strength of the connection harness 4.

In this embodiment, referring to Figure 3, the connecting wire harness 4 is disposed close to the inner side of the expanded wall 3, and the inner side of the connecting wire harness 4 is flush or substantially flush with the inner side of the expanded wall 3, so that the present invention When being twisted and unsealed during implementation, the connecting wire harness 4 tends to slide to the inside of the expanded wall 3 , which is less likely to pull the connecting wire harness 4 than when it tends to slide to the outside of the expanded wall 3 .

Considering that the first breakpoint connection structure connecting the connecting wire harness 4 and the expansion wall 3 in the circumferential direction is relatively easy to be broken by bumps, during the product sales process, in a few cases, it may cause misunderstandings that the product has been opened. Therefore, in this embodiment, a second breakpoint connection structure 7 is provided between the sealing cover 1 and the beam ring 6 to solve this problem. The second breakpoint connects the sealing cover 1 and the beam ring 6 in the axial direction. The connecting structure 7 is not easy to disconnect even if it is bumped, and it can be more accurately determined whether the product has been opened. The first breakpoint connection structure and the second breakpoint connection structure 7 will both break as the user grasps, presses, rotates and opens the seal.

Specifically, the second breakpoint connection structure 7 includes a plurality of unsealing connecting posts 701 , the plurality of unsealing connecting posts 701 are circumferentially distributed along the bottom end of the sealing cover 1 , and the unsealing connecting posts 701 are close to the sealing cover. The thickness of the body 1 gradually decreases (refer to Figure 6), so that the broken unsealing connecting post 701 can be retained in the bundle ring 6 as much as possible and is not easily touched, that is, the edge of the sealing cover 1 after being unsealed is avoided. It carries a protruding unsealing post 701 to scratch the user's skin.

In this embodiment, the sealing cover 1 is a cup-shaped structure with one end closed and one end open. The main body of the expanded wall 3 is a cylindrical structure open up and down. The sealing cover 1 is provided on the expanded wall 3 internal and coaxial.

In this embodiment, the outer wall structure of the expanded wall 3 is a number of anti-slip ridges arranged in a circumferential array around the central axis. A single anti-slip ridge extends along the axial direction, so that the friction force is greater when fingers grasp the expanded wall 3 , the grip is firm and not easy to slip, so as to facilitate the application of force to open this embodiment.

The outer edges of the anti-slip convex strips are all arc-shaped and have no sharp edges and corners. Even if they are accidentally inserted into the mouth, they will not scratch the inner wall of the mouth and avoid scratching the delicate skin of young children.

Specifically, several anti-skid convex strips are provided with C-shaped bottoms 302 at their bottoms. The C-shaped bottoms 302 are connected to all anti-slip convex strips at the same time, thereby enhancing the structural strength of the anti-skid convex strips and preventing them from being easily bumped and deformed, thus affecting the packaging quality. Appearance Quality.

In this embodiment, the hollow structure is a plurality (four pieces) of arc-shaped pieces 2, and the plurality of arc-shaped pieces 2 are evenly distributed around the sealing cover 1. There is a center of the top surface of the sealing cover 1 There is a main positioning point 103, and two auxiliary positioning points 104 are symmetrically provided on both sides of the main positioning point 103. The auxiliary positioning points 104 correspond to the middle part of the space (ie, the axial airway) between the two arc-shaped pieces 2. , the direction of the safety cover is determined through three points, so that the mechanical claw can accurately extend into and grab from the top surface of the safety cover. At the same time, the setting of the auxiliary positioning point 104 allows the robot hand to accurately extend into the axial airway and then grasp, avoiding Collision, and then rotate and install this embodiment to the nozzle piece 8 .

More specifically, a single arc-shaped piece 2 is arranged along the axial direction of the sealing cover 1, and several arc-shaped pieces 2 are bent and protruded in the tightening direction. When the mechanical claw is rotated to install this embodiment, The curved arc-shaped piece 2 can guide the mechanical claw to be basically stable in the middle of the arc-shaped piece 2 to stabilize the rotation.

Example 2

A nozzle assembly suitable for soft packaging containers, including a nozzle piece 8 and Embodiment 1. The nozzle piece 8 is fixedly installed on the soft packaging container, and part of the nozzle piece 8 is wrapped and fixed inside the soft packaging container. A portion of the spout 8 is exposed to the outside of the flexible packaging container and is screwed onto the safety cover.

Currently, there are two main ways to disconnect breakpoint connections:

First, when pulling out the tube cap, the breakpoint connection is first stretched and then pulled out, and finally the tube cap is separated from the nozzle piece 8, that is, the breakpoint connection is disconnected by applying force along the axial direction of the nozzle piece 8. The disadvantage of this method is that when the tube cover is pulled out, it is difficult for the user to stop the force in time when the breakpoint connection breaks, which may easily cause the contents to spill and affect the user experience. If the size of the breakpoint connection is reduced in order to avoid the spilling problem, This may cause the tube cover to be easily disconnected due to slight external force during packaging and transportation, thereby causing a misjudgment that the product has been opened.

The second method is to apply force along the circumferential direction of the nozzle 8 to break the breakpoint connection with rotation. However, applying force in the circumferential direction to break the breakpoint connection requires a large torque, which is not good for users with weak strength. Unfortunately, if the size of the breakpoint connection is reduced in order to reduce the difficulty of opening the cover, it may still cause a misjudgment that the above-mentioned product has been opened.

In this embodiment, the sealing cover 1 is provided with a first screwing structure, the mouth piece 8 is provided with a second screwing structure, and the first screwing structure is adapted to the second screwing structure. , the sealing cover 1 is screwed to the spout 8, and the sealing cover 1 covers and seals the outlet of the spout 8;

The nozzle piece 8 is provided with an axial gap for the axial movement of the bundle ring 6, and the bundle ring 6 is rotatably sleeved in the axial gap;

The safety cover is provided with at least one upper sliding seat 101 at a position lower than the lower end of the first screw-joint structure, and the mouth piece 8 is provided with at least one lower slider at a position lower than the lower end of the second screw-joint structure. Block 801.

When this embodiment is unopened, the sealing cover 1 is screwed to the spout 8 , and the upper sliding seat 101 and the lower sliding seat 801 are offset and intersect along the outer circumferential direction of the spout 8 .

Compared with the existing technology, this embodiment does not need to reduce the size of the breakpoint connection structure to solve the problems of easy pouring and difficulty in opening caused by too thick breakpoints. It is first ensured that the breakpoint connection structure has a qualified thickness, that is, Even if the tube cap is slightly rubbed by an external force during packaging and transportation, the breakpoint connection structure will not be easily disconnected to avoid misjudgment that the product has been opened.

As for the problem that the thicker breakpoint connection structure may cause circumferential twisting and difficulty in opening, this embodiment solves the problem by providing an upper sliding seat 101 and a lower sliding seat 801. Specifically, when the user applies force to rotate the safety cover to open it, the safety cover The cover first drives the beam ring 6 to rotate until the upper sliding seat 101 of the safety cover collides with the lower seat 801 of the nozzle 8; further increasing the force, the upper sliding seat 101 "suddenly" rubs upward Slide to the top of the lower seat 801, the safety cover will "suddenly" move axially upward, and the beam ring 6 cannot move axially upward due to the restriction of the axial gap. Therefore, the The second breakpoint connection structure 7 becomes thinner due to axial tension. The thinner second breakpoint connection structure 7 can reduce the force required for subsequent radial opening of the cover. The safety cover continues to rotate upward along the screwing structure. The thinned breakpoint connection structure is subjected to radial tension, the breakpoint connection structure is torn and broken, and the safety cover rotates until it is separated from the spout 8, that is, the unsealing is completed.

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 opened by slight external force, because a strong force needs to be applied along the circumference to frictionally slide the upper sliding seat 101 to The upper sliding seat 101 is generally unable to frictionally slide to the top of the lower sliding seat 801 , and the external friction during packaging and transportation is generally disordered and relatively slight.

Specifically, the sealing cover body 1 that is screwed to the nozzle member 8 has a certain movable space along the axial direction of the nozzle member 8, and the movable space is reserved for the axial lifting of the sealing cover body 1. It should be noted that since the breakpoint connection structure is an extremely small structure even if it is designed to have a qualified thickness, the space for movement is extremely small, that is, it basically does not affect the stable connection of the screw-joint structure.

The lower seat 801 and the second rotating structure do not overlap in the axial direction of the nozzle 8, and the lower seat 801 is located outside the second rotating structure; correspondingly, the upper sliding seat 101 and the second rotating structure do not overlap. A screw-joint structure does not overlap in the axial direction of the safety cover, and the upper sliding seat 101 is located outside the first screw-joint structure. This avoids the design influence of the upper sliding seat 101 and the lower sliding seat 801 from hindering the upward or downward rotation of the safety cover, and is conducive to the design of a mold that facilitates demoulding.

In this embodiment, the outer wall of the mouth piece 8 protrudes outward to form an upper ring protrusion 803 and a lower ring protrusion 804 distributed up and down. The axial gap is formed.

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

Specifically, the lower edge of the outer side wall of the sealing cover 1 protrudes toward the outer circumferential direction to form a circumferential annular protrusion, and the upper sliding seat 101 is formed by protruding downward from the bottom surface of the circumferential annular protrusion to achieve the above-mentioned upward sliding. The seat 101 and the first screw-connected structure do not overlap in the axial direction of the safety cover, and the upper sliding seat 101 is located outside the first screw-connected structure.

Specifically, the inner wall of the sealing cover 1 is provided with at least one section of internal convex threads 102 protruding in the direction of its central axis, and the internal convex threads 102 serve as the first screwing structure;

The outer wall of the nozzle member 8 is provided with at least one section of external convex threads 802 protruding in the direction of its central axis, and the external convex threads 802 serve as the second screwing structure;

The internal convex threads 102 and the external convex threads 802 are adapted to each other.

In this embodiment, there are at least two upper sliding seats 101 and they are evenly distributed along the circumference of the side wall of the safety cover; at least two lower sliding seats 801 are provided corresponding to the upper sliding seats 101, and The sliding seats 801 are evenly distributed along the circumference of the side wall of the nozzle member 8 . The evenly distributed upper sliding seat 101 and lower sliding seat 801 make the axial pulling force on all the unsealing connecting posts 701 relatively uniform during "sudden" lifting, ensuring that each unsealing connecting post 701 is thinned.

In this embodiment, the sides of the upper sliding seat 101 and the lower sliding seat 801 that are in contact and friction with each other are inclined to match each other, and are respectively set as upper guide slopes 101a and lower guide slopes 801a, so that the upper sliding seat 101 is relatively smooth. And quickly slide to the top of the sliding seat 801, reducing the user's force, while achieving a "sudden" lifting effect, and prompting that this direction is the correct direction for opening the lid.

The other side of the upper sliding seat 101 opposite to the upper guide slope 101a is set as an upper straight blocking surface 101b, and the other side of the lower sliding seat 801 opposite to the lower guiding slope 801a is set as a lower straight blocking surface 801b. The blocking surface 801b prevents the upper sliding seat 101 from passing through, thereby reminding the user that this direction is the wrong direction for opening the cap, and reminding the user to switch the rotation and opening direction. At the same time, the upper and lower blocking surfaces can prevent the capping installation program on the assembly line. The mechanical claw overspins when screwing the cap, thereby damaging the sealing cap body.

In this embodiment, the outer wall of the nozzle 8 has at least one section of convex threads 802 formed by protruding outwards. The convex threads 802 serve as the first screwing structure; the inner side of the safety cover The wall is provided with at least one section of inwardly protruding internal convex threads 102, and the internal convex threads 102 serve as the second screw connection structure.

Specifically, a blocking block 805 (refer to FIG. 11 ) is filled between the lower end of the male thread 802 and the side wall of the lower seat 801 . The blocking block 805 is located outside the nozzle 8 of the internal convex thread. On the circumferential movement trajectory, the end of the internal convex thread cannot pass through the blocking block 805. Considering that the nozzle 8 is essentially a small part, the lower seat 801 located above it is even more miniature. When the user screws the cap by mistake or the robot screws the cap during installation, the impact of the upper sliding seat 101 on the lower seat 801 is relatively small. Large, the blocking block 805 is designed to enhance the structural strength of the lower seat 801 and also has the function of sharing the impact.

Specifically, the sealing cover 1 of this embodiment has a four-section cylinder structure. The sealing cover 1 includes a first cylinder, a second cylinder, a third cylinder and a fourth cylinder connected in sequence from top to bottom. Cylinder, the inner cylinder diameter of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder gradually expands.

The top of the first cylinder is closed, and the bottom is open and connected with the second cylinder. The closed top surface of the first cylinder protrudes into the interior of the cylinder to form an inner clamping ring wall 105. The outer diameter of the inner clamping ring wall 105 is adapted to the inner diameter of the discharge port of the nozzle member 8. The third The diameter of the inner wall of a cylinder is adapted to the outer diameter of the discharge port of the nozzle piece 8. The inner wall of the first cylinder and the inner clamping ring wall 105 jointly clamp the discharge port of the nozzle piece 8. The inner and outer walls are used to seal the outlet of the spout 8 to prevent the packaging contents from overflowing.

The closed top of the first cylinder also protrudes toward the inside of the cylinder to form a tip ring 106. The tip ring 106 is provided between the inner sandwich ring wall 105 and the inner wall of the first cylinder. The tip of the ring 106 closely contacts the top of the outlet of the spout 8, further improving the sealing and anti-overflow effect.

The inner wall of the second cylinder protrudes toward its central axis to form the external convex thread 802. The external convex thread 802 does not exceed the inner wall of the first cylinder to avoid affecting the nozzle 8 The discharge port enters the first cylinder seal.

The external convex thread 802 is provided with two sections, and the two sections of the external convex thread 802 are symmetrical about the central axis of the second cylinder, so that the screwing can be started faster, and during the screwing process The direction is stable and not easy to tilt.

Correspondingly, the outer wall of the mouth piece 8 also protrudes toward the outer circumferential direction to form two sections of external convex threads 802 , and the two sections of the external convex threads 802 are adapted to the internal convex threads 102 .

Two upper sliding seats 101 are provided inside the third cylinder, and the two upper sliding seats 101 are centrally symmetrical about the central axis of the third cylinder. There are also several (specifically six) reinforcing blocks 107 inside the third cylinder. The plurality of reinforcing blocks 107 and the two upper sliding seats 101 are evenly distributed around the circumference. The reinforcing blocks 107 and the upper sliding seats 101 101 does not exceed the inner wall of the second cylinder to avoid affecting the rotation of the second cylinder. The reinforcing block 107 and the upper sliding seat 101 are stuck on the top surface of the upper ring protrusion 803 .

After the safety cover is installed on the suction nozzle, the lower slide seat 801 is located between the upper slide seat 101 and the reinforcing block 107 (see Figure 10), and the lower guide slope 801a and the upper guide slope 101a are opposite. The reinforcing blocks 107 cannot pass through the lower blocking surface 801b and are arranged densely, which can quickly prompt the user to rotate in the wrong direction for unsealing, and then change the capping direction.

The upper part of the cylinder wall of the fourth cylinder is hollowed out at intervals to form the second breakpoint connection structure 7, and the lower part is provided as the bundle ring 6, so as to realize the passage between the bundle ring 6 and the sealing cover 1. The design of the two-break point connection structure and 7 connections facilitates one-piece molding production.

The inner diameter of the fourth cylinder is slightly larger than the outer diameter of the upper ring protrusion 803, and the inner wall of the beam ring 6 protrudes toward the central axis to form a number (specifically four) clamping blocks 601. The block 601 is stuck in the axial gap, that is, below the upper ring protrusion 803 .

It can be seen from the above that in this embodiment, the interior of the sealing cover 1 is designed as a "stepped" structure, so that the functions of each cylinder structure do not interfere with each other and are coordinated, and it is conducive to designing a mold that facilitates demoulding.

In this embodiment, there are at least two sets of torsion tooth sets distributed along the circumferential direction between the beam ring 6 and the sealing cover 1 , and each set of the torsion tooth set includes upper torsion teeth disposed offset along the circumferential direction. 108 and lower twist teeth 602. The upper twist teeth 108 are formed by protruding downward from the bottom end of the sealing cover 1, and the lower twist teeth 602 are formed by protruding upward from the top end of the bundle ring 6. The unsealing posts 701 are provided at the axial ends of the upper twist teeth 108 and/or the lower twist teeth 602 .

During the process of rotating and opening the cover, the bundle ring 6 will be deformed to a certain extent due to pulling, and it is difficult for the deformed bundle ring 6 to continue to rotate with the sealing cover 1, that is, the upper twist teeth 108 in this state are almost The movement or rotation speed is much smaller than the rotation of the sealing cover 1, and then the upper twist teeth 108 collide with the lower twist teeth 602, and the rotation of the upper twist teeth 108 is blocked by the lower twist teeth 602, which makes the unsealing connecting post 701 has the auxiliary effect of twisting and deforming and easily breaking.

More specifically, the outer side of the upper ring protrusion 803 is formed as a ring slope inclined outward and downward from the central axis of the nozzle member 8, which is beneficial to guide the clamping block 601 to slide down, and then install the clamping block 601. within the axial clearance.

The bottom surface of the clamping block 601 is an inclined surface 601a that is inclined outward and downward from the central axis of the sealing cover 1, and cooperates with the above-mentioned ring slope to make the installation of the clamping block 601 smoother.

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 bundle ring 6 cannot easily come out of the axial gap, thereby ensuring that the safety cover is firmly connected to the nozzle. Part 8; at the same time, because the beam ring 6 repeatedly collides with the upper ring convex during the process of opening/closing the cover multiple times, this design makes the collision between the two in surface contact, which can better disperse the impact force.

Specifically, the top surface of the lower ring protrusion 804 protrudes upward to form at least two symmetrical anti-deformation protrusions 806. The anti-deformation protrusions 404 are circumferentially distributed and located inside the beam ring. The block 404 does not hinder the rotation of the beam ring, but has a restraining effect on the deformation of the beam ring during the pulling process to prevent excessive deformation of the beam ring.

A single anti-deformation bump 806 is located between the two blocking blocks 601 (refer to Figure 10). When the safety cover is not rotated with strong force, the rotation of the blocking block 601 is restricted by the anti-deformation bump 806, which is consistent with the above and The function of the lower seat is similar to that of preventing the nozzle 8 and the safety cover from excessive relative rotation as much as possible to maintain the stability of the installation. It should be noted that once there is an external force to rotate the safety cover, the inclined surface 601a of the clamping block 601 can slide through the clamping block 601, and the design of the anti-deformation bump 806 will not affect the elasticity of the beam ring 6. Turn.

In this embodiment, a limiting base piece 807 is provided on the outside of the spout 8 in parallel below the lower ring protrusion 804, and the bottom surface of the limiting base piece 807 is in contact with the edge of the opening 303 of the flexible packaging container. It is used to prompt the installation position of the spout 8 on the flexible packaging container, and at the same time prevent the spout 8 from falling into the flexible packaging container during processing.

The safety cover that has been installed on the spout 8 is no longer suitable for being used as a grabbing position. Therefore, a clamping neck groove is formed between the limiting base 807 and the lower ring protrusion 804 for clamping and transporting products.

A pressing piece 808 is provided below the limiting base sheet 807 for bonding and sealing with the flexible packaging bag. The surface of the pressing piece 808 has raised stripes, which is beneficial to improving the firmness of the bonding.

Based on the disclosure and teachings of the above description, those skilled in the art of the present invention 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 there are some modifications and changes to the present invention. It 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 (10)

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;

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.

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;

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.

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;

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.

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;

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.

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;

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.

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

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.

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;

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.

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;

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.

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;

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.

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;

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.