CN220866077U - Suction nozzle cover - Google Patents

Abstract

The utility model discloses a suction nozzle cover, which comprises an inner cover and a safety ring, wherein an axial air passage is formed between the inner cover and the safety ring; the safety ring is provided with at least one notch penetrating through the side part of the safety ring to form a radial air passage, the notch extends to penetrate through the lower end of the suction nozzle, and at least one deformable binding belt is arranged in the notch; firstly, arranging a binding belt to ensure that an unsealed suction nozzle cover is connected with a suction nozzle, so that a child is prevented from eating the suction nozzle by mistake, and the suction nozzle is a first safety insurance and is convenient to recycle; secondly, a safety ring capable of effectively expanding the volume of the safety belt is arranged, and even if a child eats the safety belt by mistake and enters the mouth, the child cannot swallow the safety belt into the respiratory tract, so that the safety belt is a second safety; finally, the utility model may be swallowed by older children, teenagers or pets in some unexpected situations, so that the utility model is further provided with an axial air passage and a radial air passage for air flow, and even if the children, teenagers or pets swallow by mistake, the breath can be maintained until the career cares for the doctor, which is a third safety insurance.

Description

Suction nozzle cover

Technical Field

The utility model belongs to the technical field of packaging, and particularly relates to a suction nozzle cover.

Background

The suction nozzle is mainly applied to a soft packaging bag with a mouth, and the soft packaging bag combined with the suction nozzle is called a suction nozzle bag and is mainly used for filling liquid foods such as beverages, jelly and the like.

In order to avoid the pollution of the suction nozzle and the tilting of food, the suction nozzle is provided with a suction nozzle cover for sealing, most of the existing suction nozzle covers are completely separated from the suction nozzle bag after being unsealed, one of the main application fields of the suction nozzle bag is the field of children food, and the independent suction nozzle cover is easy to be eaten by children by mistake after being unsealed, so that choking is caused, and great potential safety hazards exist.

On the other hand, the suction nozzle cover separated from the suction nozzle bag is easy to be discarded by a single hand, so that the suction nozzle cover and the suction nozzle bag are difficult to recycle together, and the problems of resource waste and environmental pollution are caused.

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

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

But this prior art's connecting rib is C crooked evagination in bottleneck department, has following not enough:

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

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

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

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

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

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

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

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

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

Disclosure of Invention

The present utility model provides a nozzle cover to solve the above-mentioned problems of the prior art.

The technical scheme of the utility model is realized as follows:

The suction nozzle cover is suitable for a flexible package suction nozzle and comprises an inner cover and a safety ring, wherein the inner cover is rotatably installed on the suction nozzle, the safety ring is arranged around the inner cover, the safety ring is connected to the periphery of the inner cover through a connecting piece, and an axial air passage is formed between the inner cover and the safety ring;

The safety ring is provided with at least one notch penetrating through the side part of the safety ring to form a radial air passage, the notch extends to penetrate through the lower end of the suction nozzle, and at least one deformable binding belt is arranged in the notch;

The first end of the strap is positioned at any position within the outer surface of the safety ring, the second end of the strap extends downwards to be directly or indirectly bound on the suction nozzle, and the strap does not exceed the outer side of the safety ring.

Preferably, the first end of the strap is formed by a top wall or a side wall of the notch protruding inwardly of the notch, the strap not exceeding the inner side of the safety ring.

Preferably, the part of the strap located in the notch is provided with a bending structure.

Preferably, a break point connection structure is arranged between the bending structure and the top wall and/or the side wall of the notch.

Preferably, the breakpoint connection structure comprises a plurality of broken bridges, and the thickness of the broken bridges gradually decreases from the wall of the gap to the direction of the strap;

And an injection molding end seat with the size larger than that of the broken bridge is further arranged between the broken bridge and the wall surface of the notch.

Preferably, the part of the strap in the notch 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 suction nozzle cover;

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

The junction of straightaway and crooked section is set up to turn to the portion, the tie is close to turn to the portion and then the width reduces gradually, keep away from turn to the portion and then the width increases gradually.

Preferably, the structure of the safety ring corresponding to the top of the notch is an elastic bridge arm capable of elastic deformation; when the safety ring is grasped and rotated to unseal, the safety ring provided with the elastic bridge arm is slightly deformed, and the left side wall and the right side wall of the notch are simultaneously pressed towards the binding belt;

The outer wall structure of the safety ring is provided with a plurality of anti-slip raised strips which are arrayed circumferentially around the central shaft, and a single anti-slip raised strip is arranged in an extending way along the axial direction; the outer edge of anti-skidding sand grip is the circular arc design, and a plurality of the bottom of anti-skidding sand grip is equipped with C shape bottom, C shape bottom is connected simultaneously all anti-skidding sand grip.

Preferably, the connecting piece is a plurality of arc-shaped pieces, the arc-shaped pieces are uniformly distributed around the inner cover, a main positioning point is arranged at the center of the top surface of the inner cover, 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 pieces;

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

Preferably, the strap is disposed adjacent the inner side of the safety ring, the inner side of the strap being flush or substantially flush with the inner side of the safety ring.

Preferably, the suction nozzle further comprises an integrally formed strap, the strap is connected to the strap at a second end, and the strap is rotatably connected to the suction nozzle;

When the safety ring is pinched by a handle to rotate for unsealing, the belt can rotate along with the safety ring by rotating the belt connected with the suction nozzle; when the inner cover is unscrewed and separated from the suction nozzle, the binding ring is still rotationally connected to the suction nozzle, and the inner cover and the safety ring are kept connected through the binding belt;

At least two sets of twisting teeth distributed along the circumferential direction are arranged between the binding ring and the inner cover, each set of twisting teeth comprises an upper twisting tooth and a lower twisting tooth which are arranged in a staggered manner along the circumferential direction, the upper twisting teeth are formed by the downward bulge of the bottom end of the inner cover, the lower twisting teeth are formed by the upward bulge of the top end of the binding ring, and the axial end parts of the upper twisting teeth and/or the lower twisting teeth are provided with broken bridges;

In the process of rotating the cover, the binding ring can deform to a certain extent due to pulling, and the deformed binding ring is difficult to continuously rotate along with the inner cover, namely, the upper torsion teeth in the state are almost motionless or the rotating speed is far smaller than that of the inner cover, so that the upper torsion teeth collide with the lower torsion teeth, and the rotation of the upper torsion teeth is blocked by the lower torsion teeth.

The utility model has the beneficial effects that:

Firstly, the suction nozzle cover and the suction nozzle after unsealing are kept connected by the belt, so that the child is prevented from eating by mistake, the safety is a first safety insurance, and meanwhile, the suction nozzle cover is prevented from being discarded independently, and the suction nozzle cover is convenient to recycle;

Secondly, considering that even if the belt connection is arranged, the belt breakage is possibly caused by unexpected situations (such as strong tearing and the like in the process of repeatedly playing by a child), and the utility model is completely separated from the suction nozzle, the utility model is further provided with the safety ring which can effectively enlarge the volume of the utility model, the size standard of the safety ring is far larger than that of the respiratory tract of a common child, and even if the child mistakenly eats the belt breakage of the utility model into the mouth, the child cannot swallow the respiratory tract due to the overlarge volume, so that the choking risk is avoided, and the safety ring is designed for the object incapable of swallowing the utility model and is a second safety;

again, the utility model may be swallowed by mistake by older children, teenagers or pets in certain unexpected situations, so the utility model is also provided with the axial air passage and the radial air passage for air flow, and in extreme cases, even if the utility model is swallowed by mistake, the breath can be maintained until the mistaking object is hospitalized, the choking risk is avoided, and the utility model is designed for the object capable of swallowing, which is a third safety insurance;

Finally, the strap is 'side hidden', namely, the strap does not exceed the outer side of the safety ring, namely, the peripheral size of the cover is basically unchanged, the original production line can basically continue to be used, the cover arranging production line and An Gai gaps are not required to be changed, the gripper grabbing and the like are not influenced by an outward protruding structure, and the cost of producing a new product is effectively controlled; meanwhile, the side hidden type binding belts are not easy to scratch, pull and the like outside in the processes of packaging, transporting, putting on a rack and the like, so that the breakage of the binding belts or the generation of scratches, burrs and the like are avoided, and the packaging quality of products is ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a second schematic diagram of the structure of the present utility model;

FIG. 3 is an enlarged view at A of FIG. 2;

FIG. 4 is a schematic view of the structure of the utility model after unsealing;

FIG. 5 is a bottom view of the present utility model;

FIG. 6 is a third schematic diagram of the structure of the present utility model;

FIG. 7 is a fourth schematic diagram of the structure of the present utility model;

FIG. 8 is a fifth schematic diagram of the structure of the present utility model;

FIG. 9 is a sixth schematic diagram of the structure of the present utility model.

Marking:

1. A safety ring; 101. an elastic bridge arm; 102. a C-shaped bottom; 103. a notch;

2. A strap; 201. a first end; 202. a second end; 203. a curved section; 203a, a steering part;

3. a breakpoint connection structure; 301. bridge breaking; 302. injection molding of the end seat;

4. An inner cover;

5. A connecting piece;

6. And (5) a binding ring.

Detailed Description

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

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

Referring to fig. 1 to 9, a suction nozzle cap comprises an inner cap 4 and a safety ring 1 which are integrally formed, wherein the inner cap 4 is rotatably mounted on a suction nozzle, the safety ring 1 is arranged around the inner cap 4, the safety ring 1 is connected to the periphery of the inner cap 4 through a connecting piece 5, and an axial air passage is formed between the inner cap 4 and the safety ring 1.

The safety ring 1 is provided with at least one notch 103 penetrating through the side part of the safety ring to form a radial air passage, the notch 103 extends to penetrate through the lower end of the suction nozzle, and at least one deformable and same-material strap 2 is arranged in the notch 103;

The first end 201 of the strap 2 is located at any position within the outer surface of the safety ring 1, the second end 202 of the strap 2 extends downwardly to be directly or indirectly tied to a suction nozzle (conventional parts, not shown in the drawings), and the strap 2 does not extend beyond the outer side of the safety ring 1.

Firstly, the strap 2 is arranged to enable the unsealed suction nozzle cover to be connected with the suction nozzle, so that the child is prevented from eating by mistake, the child is prevented from being a first safety insurance, and meanwhile, the suction nozzle cover is prevented from being discarded independently, so that the recycling is facilitated;

Secondly, considering that even if the tie 2 is connected, the tie 2 is possibly broken due to unexpected situations (for example, the tie 2 is forcibly torn off in the process of repeatedly playing by a child, etc.), and the embodiment is completely separated from the suction nozzle, the embodiment is further provided with the safety ring 1, the safety ring 1 can effectively enlarge the volume of the embodiment, the size standard of the safety ring 1 is far larger than the respiratory tract of a common child, and even if the child breaks the tie 2, the embodiment is mistakenly eaten by the child into the mouth, the child cannot swallow the respiratory tract due to the overlarge volume, so that the choking risk is avoided, and the safety ring is designed for the object incapable of swallowing the embodiment and is a second safety;

Again, the older children, teenagers or pets may swallow the embodiment by mistake in some unexpected situations, so the embodiment is further provided with the axial air passage and the radial air passage for air flow to pass, and in extreme cases, even if the embodiment is swallowed by mistake, the breath can be maintained until the mistaking object is hospitalized, so that the choking risk is avoided, and the embodiment is designed for the object capable of swallowing, and is a third triple safety insurance;

Finally, the strap is 'side hidden', namely, the strap does not exceed the outer side of the safety ring, namely, the peripheral size of the cover is basically unchanged, the original production line can basically continue to be used, the cover arranging production line and An Gai gaps are not required to be changed, the gripper grabbing and the like are not influenced by an outward protruding structure, and the cost of producing a new product is effectively controlled; meanwhile, the side hidden type strap 2 is not easy to scratch, pull and the like outside in the processes of packaging, transporting, putting on a rack and the like, so that the strap 2 is prevented from being broken or generating scratches, burrs and the like, and the packaging quality of products is ensured.

In practical production, the gripper needs to extend into the axial air passage to grasp the embodiment, so that the first end 201 of the strap 2 is formed by protruding the top wall or the side wall of the notch 103 toward the inside of the notch 103, and the strap 2 does not exceed the inner side of the safety ring 1, so as to avoid interference with grasping of the gripper.

The strap 2 may be in a linear structure (as shown in fig. 9) in the notch 103 until being connected with the suction nozzle, but preferably, a bending structure is arranged at a position of the strap 2 in the notch 103, so that after the embodiment is unsealed, the strap 2 is far away from the suction nozzle as far as possible through deformation and stretching, thereby avoiding being contaminated with food, or interfering with and scratching the lips or facial skin of the user when the user drinks.

The shape of the strap 2 is not particularly limited, and in order to enable the purchaser to intuitively determine whether the product is opened, the bending structure is connected with the top wall and/or the side wall of the notch 103 by a break point connecting structure 3, and the break point connecting structure has the function of restraining and maintaining the shape of the strap 2 before opening.

Specific designs of the bending structure and the break point connection structure include, but are not limited to, those shown in fig. 1 to 9.

Specifically, the strap 2 of this embodiment has a plurality of (3) U-shaped bends (as shown in fig. 1) that are connected end to end at the position in the notch 103, and the plurality of U-shaped bends are arranged along the axial direction of the nozzle cover, and the design has the advantages that: firstly, the length of the strap 2 is extended as much as possible within the gap 103 of limited space; secondly, the regular U-shaped arrangement is convenient for die sinking production; and finally, after the design is stretched and deformed, the stress of each part is relatively uniform relative to other bending structures, no obvious stress concentration area exists, and the design is not easy to break.

The U-shaped bend is provided with two straight line sections and a bending section 203 for connecting the two straight line sections, and a breakpoint connection structure is arranged between the bending section 203 and the side wall of the notch 103.

More specifically, the breakpoint connection structure includes a plurality of (3) broken bridges 301, where the thickness of the broken bridges 301 gradually decreases from the wall surface of the notch 103 toward the strap 2, so that the broken bridges 301 remain on the wall surface of the notch 103 (as shown in fig. 4) and are not easy to touch, that is, the strap 2 is prevented from carrying the broken bridges 301 protruding outwards to scratch the skin of the user after the opening.

The size is slightly greater than the injection molding end seat 302 of the bridge cutoff 301 between the bridge cutoff 301 and the wall surface of the notch 103, the thickness of the mold part corresponding to the bridge cutoff 301 is extremely thin, injection molding slurry is not easy to flow into and fill, and the groove body structure corresponding to the injection molding end seat 302 is arranged on the mold, so that the slurry is favorably guided to flow into and fill the mold position corresponding to the bridge cutoff 301.

In this embodiment, the structure of the safety ring 1 corresponding to the top of the notch 103 is an elastic bridge arm 101 that can be elastically deformed, that is, the bottom surface of the elastic bridge arm 101 is the top wall of the notch 103, when the user grasps the safety ring 1 to rotate and unseal, the safety ring 1 provided with the elastic bridge arm 101 is slightly deformed, and the left and right side walls of the notch 103 simultaneously approach the strap 2 to squeeze, so as to be beneficial to breaking the broken bridge 301, so that the opening of this embodiment is convenient and quick.

The connection between the straight line segment and the curved segment 203 is set as a turning part 203a, the width of the strap 2 is gradually reduced when the strap 2 is close to the turning part 203a, flexibility when the strap 2 is deformed and stretched is ensured, the width is gradually increased when the strap 2 is far away from the turning part 203a, and strength of the strap 2 is ensured.

In this embodiment, the strap 2 is disposed near the inner side of the safety ring 1, and the inner side of the strap 2 is flush or substantially flush with the inner side of the safety ring 1 (as shown in fig. 5), so that when the strap 2 is twisted for unsealing in this embodiment, the strap 2 tends to slide toward the inner side of the safety ring 1, and is less likely to cause a pull on the strap 2 than the strap tends to slide toward the outer side of the safety ring 1.

Since this embodiment needs to be unsealed by rotation, in order to avoid the strap 2 winding around the suction nozzle along with the unscrewing operation, and also in order to avoid the strap 2 from being designed to hinder the unscrewing operation, this embodiment further includes the strap ring 6 integrally formed with the above structure, the second end 202 of the strap 2 is connected to the strap ring 6, and the strap ring 6 is rotatably connected to the suction nozzle, so as to indirectly bind the strap 2 (also in this embodiment) to the suction nozzle.

When the safety ring 1 is pinched to rotate for unsealing, the binding ring 6 connected to the suction nozzle is rotated to enable the binding belt 2 to rotate along with the safety ring 1, so that the blocking of the design of the binding belt 2 to the unsealing operation is avoided; when the inner cap 4 is unscrewed off the suction nozzle, the strap 6 remains rotatably connected to the suction nozzle and remains connected to the inner cap 4 and the safety ring 1 via the strap 2.

In this embodiment, the outer wall structure of the safety ring 1 is a plurality of anti-slip raised strips surrounding the central shaft circumferential array, and a single anti-slip raised strip extends along the axial direction, so that the friction force is large when fingers grip the safety ring 1, the grip is stable, and the safety ring is not easy to slip, so that the embodiment is conveniently opened by applying force.

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

Specifically, a plurality of the bottom of anti-skidding sand grip is equipped with C shape bottom 102, all are connected simultaneously to C shape bottom 102 anti-skidding sand grip, reinforcing anti-skidding sand grip's structural strength avoids colliding with easily and warp, influences the appearance quality of packing.

In this embodiment, connecting piece 5 is a plurality of (4) arc pieces, and is a plurality of the arc piece encircles inner cup 4 evenly distributed, the top surface center of inner cup 4 is equipped with the main setpoint, the bilateral symmetry of main setpoint is equipped with two vice setpoint, vice setpoint corresponds the space (axial air flue) middle part between two arc pieces, confirms through the three points the orientation of suction nozzle lid makes the gripper can accurately follow the top surface of suction nozzle lid and stretches into snatch, and the setting of vice setpoint makes the manipulator can accurately stretch into the axial air flue and grasps again simultaneously, avoids the collision, again with this embodiment rotatory installation to the suction nozzle.

More specifically, the single arc piece is arranged along the axial direction of the inner cover 4, a plurality of arc pieces are bent and protruded towards the screwing direction, and when the mechanical claw is rotatably installed in the embodiment, the bent arc piece can guide the mechanical claw to basically stabilize in the middle of the arc piece, so that the mechanical claw is stably screwed.

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

Claims (10)

1. The suction nozzle cover is suitable for the suction nozzle of the flexible package and is characterized by comprising an inner cover and a safety ring, wherein the inner cover is rotatably installed on the suction nozzle, the safety ring is arranged around the inner cover, the safety ring is connected to the periphery of the inner cover through a connecting piece, and an axial air passage is formed between the inner cover and the safety ring;

The safety ring is provided with at least one notch penetrating through the side part of the safety ring to form a radial air passage, the notch extends to penetrate through the lower end of the suction nozzle, and at least one deformable binding belt is arranged in the notch;

The first end of the strap is positioned at any position within the outer surface of the safety ring, the second end of the strap extends downwards to be directly or indirectly bound on the suction nozzle, and the strap does not exceed the outer side of the safety ring.

2. The suction nozzle cover as set forth in claim 1, wherein the first end of the strap is formed by a top wall or a side wall of the notch protruding inward of the notch, the strap not exceeding the inner side of the safety ring.

3. The suction nozzle cover as claimed in claim 1 or 2, wherein the portion of the strap located in the gap is provided with a curved structure.

4. A nozzle cap according to claim 3, wherein the curved structure is connected to the top wall and/or the side wall of the recess by a break-point connection.

5. The mouthpiece cover of claim 4, wherein the break-point connection structure includes a plurality of break-bridges, the thickness of the break-bridges gradually decreasing from the wall of the gap toward the strap;

And an injection molding end seat with the size larger than that of the broken bridge is further arranged between the broken bridge and the wall surface of the notch.

6. The suction nozzle cover as set forth in claim 4, wherein the strap has a plurality of U-shaped bends in the portion thereof in the gap, the plurality of U-shaped bends being aligned in the axial direction of the suction nozzle cover;

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

The junction of straightaway and crooked section is set up to turn to the portion, the tie is close to turn to the portion and then the width reduces gradually, keep away from turn to the portion and then the width increases gradually.

7. The suction nozzle cover as set forth in claim 6, wherein the structure of the safety ring corresponding to the top of the notch is an elastic bridge arm capable of being elastically deformed; when the safety ring is grasped and rotated to unseal, the safety ring provided with the elastic bridge arm is slightly deformed, and the left side wall and the right side wall of the notch are simultaneously pressed towards the binding belt;

The outer wall structure of the safety ring is provided with a plurality of anti-slip raised strips which are arrayed circumferentially around the central shaft, and a single anti-slip raised strip is arranged in an extending way along the axial direction; the outer edge of anti-skidding sand grip is the circular arc design, and a plurality of the bottom of anti-skidding sand grip is equipped with C shape bottom, C shape bottom is connected simultaneously all anti-skidding sand grip.

8. The suction nozzle cover according to claim 1, wherein the connecting piece is a plurality of arc-shaped pieces, the arc-shaped pieces are uniformly distributed around the inner cover, a main positioning point is arranged in the center of the top surface of the inner cover, 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 pieces;

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

9. The suction nozzle cover as set forth in claim 2 wherein said strap is disposed adjacent an inner side of said safety ring, an inner side of said strap being flush or substantially flush with an inner side of said safety ring.

10. The nozzle cap of claim 5, further comprising an integrally formed strap, a second end of the strap being connected to the strap, the strap being rotatably connected to the nozzle;

When the safety ring is pinched by a handle to rotate for unsealing, the belt can rotate along with the safety ring by rotating the belt connected with the suction nozzle; when the inner cover is unscrewed and separated from the suction nozzle, the binding ring is still rotationally connected to the suction nozzle, and the inner cover and the safety ring are kept connected through the binding belt;

At least two sets of twisting teeth distributed along the circumferential direction are arranged between the binding ring and the inner cover, each set of twisting teeth comprises an upper twisting tooth and a lower twisting tooth which are arranged in a staggered manner along the circumferential direction, the upper twisting teeth are formed by the downward bulge of the bottom end of the inner cover, the lower twisting teeth are formed by the upward bulge of the top end of the binding ring, and the axial end parts of the upper twisting teeth and/or the lower twisting teeth are provided with broken bridges;

In the process of rotating the cover, the binding ring can deform to a certain extent due to pulling, and the deformed binding ring is difficult to continuously rotate along with the inner cover, namely, the upper torsion teeth in the state are almost motionless or the rotating speed is far smaller than that of the inner cover, so that the upper torsion teeth collide with the lower torsion teeth, and the rotation of the upper torsion teeth is blocked by the lower torsion teeth.