CN221115102U - Flip type positioning bottle cap - Google Patents

Abstract

The utility model discloses a flip type positioning bottle cap, which relates to the technical field of bottle caps and aims at the technical problem that a flip is inconvenient to open by one hand in the prior art. The utility model can ensure that the opening direction of the flip cover is uniquely determined, and is convenient for a user to open the flip cover by one hand.

Description

Flip type positioning bottle cap

Technical Field

The utility model relates to the technical field of bottle caps, in particular to a flip type positioning bottle cap.

Background

The main types of bottle caps include rotary caps, crown caps, flip (flip) caps, and the like. The flip-type bottle cap is convenient for repeated opening and closing. The flip cover type bottle cap comprises a bottle opening arranged on the packing box, a screwing cover in threaded connection with the bottle opening, and a flip cover which is arranged on the screwing cover and can be lifted and closed.

For example, in the patent with publication number CN218318508U, a "flip-top cap" is disclosed, which includes a cap body, a connecting piece, and a flip-top cap, wherein an inner wall of the cap body is provided with an internal thread, the internal thread is used for being screwed with a bottle mouth, an outer wall of the cap body is connected with the connecting piece, and the flip-top cap is rotatably connected with the connecting piece, so that the flip-top cap can be covered on the cap body.

For another example, in the patent with publication number CN220032726U, a "liquid seal bottle cap assembly" is disclosed, which includes a bottle cap mechanism including an upper flip cover, the upper flip cover is rotatably connected with an outer cap through a hinge, an inner cap is fixedly installed inside the outer cap, a connecting internal thread is provided on the inner side of the inner cap, and the connecting internal thread is screwed with a connecting external thread of a bottle mouth in a matching manner.

In the existing flip-type bottle cap, the screwing cap (such as the bottle cap body and the inner cap) in threaded connection with the bottle mouth has the risk of excessive screwing, so that the opening direction of the flip on the screwing cap is difficult to be uniquely determined, the risk that the opening direction of the flip deviates from a user exists, and the flip is inconvenient to be opened by a single hand of the user.

Disclosure of utility model

The utility model provides a flip type positioning bottle cap, which aims at the defects in the prior art, can uniquely determine the opening direction of a flip, and is convenient for a user to open the flip by one hand.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the flip type positioning bottle cap comprises a bottle opening, a screwing cap and a flip, wherein an external thread is arranged on the outer wall of the bottle opening, a first positioning convex part is arranged on the bottle opening, an internal thread is arranged on the inner wall of the screwing cap, the external thread is matched with the internal thread, the external thread and the internal thread are both provided with one piece, the flip is arranged at the upper end of the screwing cap, the flip is connected with the screwing cap through a bending part, and the flip is in clamping fit with the screwing cap;

When the tail end of the external thread is provided with a first limiting part and the screwing cover is screwed up, the bending part is positioned at the non-front side of the flip cover, and the internal thread is abutted with the first limiting part;

Or when the tail end of the internal thread is provided with a second limiting part and the screwing cover is screwed, the bending part is positioned at the non-front side of the flip cover, and the external thread is abutted with the second limiting part;

Or when the tail end of the external thread is provided with a first limiting part, the tail end of the internal thread is provided with a second limiting part, the rotation angle of the internal thread is equal to that of the external thread, and the screwing cap is screwed down, the bending part is positioned at the non-front side of the flip cover, the internal thread is abutted with the first limiting part, and the external thread is abutted with the second limiting part;

Or when the tail end of the external thread is provided with a first limiting part, the tail end of the internal thread is provided with a second limiting part, the rotation angle of the internal thread is smaller than that of the external thread, and the screwing cover is screwed down, the bending part is positioned at the non-front side of the flip cover, and the external thread is abutted with the second limiting part;

or when the tail end of the external thread is provided with a first limiting part, the tail end of the internal thread is provided with a second limiting part, the rotation angle of the internal thread is larger than that of the external thread, and when the screwing cover is screwed up, the bending part is positioned on the non-front side of the flip cover, and the internal thread is abutted with the first limiting part.

Further, the rotation angles of the internal thread and the external thread are 360 degrees.

Further, the upper end of the screwing cover is provided with a clamping convex part, the inner wall of the flip cover is provided with a clamping concave part, and the clamping convex part is matched with the clamping concave part.

Further, the upper end of the screwing cover is provided with a fixed ring and a bottle mouth, the bottle mouth is arranged on the inner ring of the fixed ring, the fixed ring is provided with the clamping convex part, the flip cover is buckled on the fixed ring and the bottle mouth, the inner top wall of the flip cover is provided with a plugging part, and the plugging part is matched with the bottle mouth.

Further, an opening groove is formed in one side, away from the bending part, of the flip cover.

Further, the outer side of the lower end of the bottle mouth is provided with an annular edge, and the outer ring of the annular edge is provided with the first positioning convex part.

Further, one first positioning convex part is arranged; or the two first positioning convex parts are arranged, the two first positioning convex parts are different in size, and the annular edge is arranged between the two first positioning convex parts.

Further, the outer wall of the bottle mouth is provided with a second positioning convex part, and the second positioning convex part is arranged above the first positioning convex part.

Further, the upper end of bottleneck is equipped with annular first sealed edge, and the upper end of first sealed edge extends to the outside, the interior roof of screwing up the lid is equipped with annular second sealed edge, and the inside wall along first sealed edge cooperates with the lateral wall along second sealed edge.

Further, a sealing cover is arranged in the bottle opening, a pull ring is arranged on the top surface of the sealing cover, one end of the pull ring is suspended, and one end of the pull ring, which is far away from the suspended end, is connected with the sealing cover through a connecting part.

The utility model has the beneficial effects that:

1. In the utility model, the first positioning convex part is arranged on the bottle mouth, so that the position of the bottle mouth on the packing box can be positioned by utilizing the first positioning convex part, thereby positioning the position of the external thread on the bottle mouth and laying a foundation for the subsequent screwing position of the screwing cap.

Because the external thread and the internal thread are both provided with one piece, and the tail end of the external thread is provided with a first limit part and/or the tail end of the internal thread is provided with a second limit part, when the screwing cap is screwed down, the screwing position of the internal thread is unique, and the screwing end point is unique, so that the direction of the screwing cap during screwing down can be uniquely determined.

Because the orientation of the screw cap when screwed down can be uniquely determined, the opening orientation of the flip cover located on the screw cap can also be uniquely determined.

In addition, when the screwing cap is screwed, the non-front side of the flip cover is provided with the bending part, and the non-front side of the flip cover refers to the side of the flip cover which does not face a user, so that when the screwing cap is screwed, the bending part can be positioned at the rear side or the left side or the right side of the flip cover; because the side of the flip, which is away from the bending part, is the direction of opening the flip, the direction of opening the flip can be the front side or the right side or the left side of the flip, and the direction of opening the flip cannot be the rear side of the user, so that the user can be allowed to directly open the flip by using the thumb of one hand, and the flip can be opened by one hand conveniently.

2. According to the utility model, the stability and reliability of the flip cover when being closed can be improved by enabling the flip cover to be in clamping fit with the screwing cover.

3. In the utility model, the clamping matching of the flip cover and the screwing cover is realized by utilizing the clamping convex part and the clamping concave part, so that the structure can be simplified, and the processing is convenient.

4. In the utility model, the flexibility of the drinking mode can be improved by arranging the bottle mouth; by arranging the plugging part, the reliability of the sealing bottle mouth can be improved.

5. When the flip type positioning bottle cap is installed on the packing box and oil is filled in the packing box, the flip type positioning bottle cap is opened, the packing box is inclined, oil is poured out of the bottle neck, the pressure in the packing box is reduced along with pouring of the oil, and when the packing box is restored, the pressure in the packing box is smaller than the external pressure, and a pressure difference exists between the inside of the packing box and the outside, so that the oil near the bottle neck can be sucked back into the packing box, and an oil dripping preventing effect is achieved.

6. In the utility model, the opening groove is arranged on one side of the flip cover, which is away from the bending part, so that a force application position can be provided for a user to open the flip cover by using the thumb of one hand, thereby being more convenient for opening the flip cover.

7. In the utility model, the second positioning convex part is arranged, so that the bottle mouth can be positioned on the packing box together with the first positioning convex part, and the positioning accuracy is improved.

8. According to the utility model, the first sealing edge is arranged at the upper end of the bottle opening, and the second sealing edge is arranged on the inner top wall of the screwing cap, so that the outer side wall of the second sealing edge is attached to the inner side wall of the first sealing edge when the screwing cap is screwed down, and the sealing effect is improved.

9. In the utility model, the sealing effect can be improved by arranging the sealing cover in the bottle mouth. And because the setting of first location convex part can fix a position the bottleneck in the position on the packing carton, so can fix a position the position of closing cap and pull ring to can unify the direction that the closing cap was torn, unified package criterion.

Drawings

FIG. 1 is a schematic view of the structure of a bottle neck of example 1;

FIG. 2 is a schematic view of the structure of the bottle mouth with a closure cap in example 1;

FIG. 3 is a schematic view of the structure of the closure of embodiment 1;

Fig. 4 is a schematic view of the structure of the screw cap of embodiment 1;

Fig. 5 is a schematic diagram of a screw cap according to embodiment 1;

Fig. 6 is a schematic diagram of a flip-top positioning bottle cap according to embodiment 1;

fig. 7 is a schematic diagram of a flip-top positioning bottle cap according to embodiment 1;

fig. 8 is a schematic diagram of a flip-top positioning bottle cap according to embodiment 1;

FIG. 9 is a top view of a flip top positioning bottle cap of embodiment 3;

fig. 10 is a cross-sectional view at A-A in fig. 9.

Reference numerals illustrate:

1-a bottle mouth, 11-an annular edge, 111-a first positioning convex part, 112-a reinforcing rib, 12-an external thread, 121-a first limiting part, 13-a second positioning convex part, 14-a first sealing edge,

2-Screwing cap, 21-internal thread, 211-second limit part, 22-fixing ring, 221-clamping convex part, 23-bottle mouth, 24-resistance increasing thread, 25-second sealing edge,

3-Flip cover, 31-bending part, 32-clamping concave part, 33-blocking part, 34-opening groove,

4-Closure, 41-tab, 42-connection.

Detailed Description

For a better understanding of the present utility model, the present utility model is further described below with reference to the accompanying drawings. It is noted that in the description of the present utility model, the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices 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.

Example 1:

As shown in fig. 6-8, a flip-type positioning bottle cap comprises a bottle opening 1, a screwing cap 2 and a flip-type cover 3.

As shown in fig. 1, the bottle mouth 1 has a tubular structure. The bottleneck 1 is used for installing on the packing carton, bottleneck 1 and the inside intercommunication of packing carton. An annular edge 11 is arranged on the outer side of the lower end of the bottle opening 1, and a first positioning convex part 111 is arranged on the outer ring of the annular edge 11. The outer wall of the bottle mouth 1 is provided with an external thread 12. The bottle mouth 1, the annular rim 11, the first positioning protrusion 111 and the external thread 12 may be integrally injection molded.

When the bottle mouth 1 is welded on the packing box, the annular edge 11 and the first positioning convex part 111 are welded on the inner wall of the packing box.

The first positioning convex part 111 can position the bottle mouth 1 on the packing box, so that the position of the external thread 12 on the bottle mouth 1 can be positioned, and a foundation is laid for the subsequent screwing position of the screwing cap 2.

As shown in fig. 4, the inner wall of the screw cap 2 is provided with an internal thread 21, and the internal thread 21 is adapted to be engaged with the external thread 12.

The number of external threads 12 and internal threads 21 determines the number of positions at which internal threads 21 are threaded into external threads 12. In the present embodiment, since the external thread 12 and the internal thread 21 are provided in one piece, the position where the internal thread 21 is screwed into the external thread 12 is only one, that is, the screwing position is unique.

As shown in fig. 6-8, the flip cover 3 is disposed at the upper end of the screw cap 2, the flip cover 3 is connected with the screw cap 2 through a bending portion 31, and the flip cover 3 is in clamping fit with the screw cap 2.

Specific: as shown in fig. 5, in this embodiment, the upper end of the screw cap 2 is provided with a fixing ring 22 and a bottle mouth 23, the bottle mouth 23 is disposed on the inner ring of the fixing ring 22, the fixing ring 22 is provided with a clamping convex portion 221, the flip cover 3 covers the fixing ring 22 and the bottle mouth 23, the inner wall of the flip cover 3 is provided with a clamping concave portion (not shown in fig. 1-8), and the clamping convex portion 221 is in clamping fit with the clamping concave portion, so that the clamping fit of the flip cover 3 and the screw cap 2 is realized. The inner top wall of the flip 3 is provided with a blocking portion (not shown in fig. 1-8) for blocking the mouth 23.

Case (1): only the end of the external thread 12 is provided with a first stop 121. When the screw cap 2 is screwed, the bending portion 31 is located on the non-front side of the lid 3 (the non-front side of the lid 3 means a side of the lid 3 not facing the user), and the non-front side of the lid 3 includes the rear side or the left side or the right side of the lid 3, so that when the screw cap 2 is screwed, the bending portion 31 is located on the rear side or the left side or the right side of the lid 3), and the internal thread 21 abuts against the first limiting portion 121.

In this case, the first limiting portion 121 may prevent the screw cap 2 from being excessively screwed, so that the screwing end point is unique, and the direction of the screw cap 2 when being screwed can be uniquely positioned.

Since the orientation of the screw cap 2 when screwed down can be uniquely determined, the opening orientation of the flip cover 3 located on the screw cap 2 can also be uniquely determined.

Moreover, since the bending portion 31 is located at the non-front side of the folder 3 when the screw cap 2 is screwed, the direction of opening the folder 3 is always not deviated from the user (the opening direction of the folder 3 includes the front side, the right side and the left side of the folder 3), thereby allowing the user to directly open the folder 3 with the thumb of one hand, and facilitating the opening of the folder 3 with one hand.

For example, if the screw cap 2 is screwed down, the bending portion 31 is located at the rear side or the right side of the flip cover 3, and a user can hold the package box and the screw cap 2 with the index finger, the middle finger, the ring finger and the little finger of the right hand, and the flip cover 3 can be opened by the thumb of the right hand.

For another example, if the screw cap 2 is screwed down, the bending portion 31 is located at the rear side or the left side of the flip cover 3, and a user can hold the package box and the screw cap 2 with the index finger, middle finger, ring finger, and little finger of the left hand, and the thumb of the left hand lifts the flip cover 3 upwards, so that the left hand can be opened by one hand.

For another example, if the screw cap 2 is screwed down, the bending portion 31 is located at the front side of the flip cover 3, and the opening direction of the flip cover 3 may deviate from the user, at this time, the flip cover 3 is not conveniently opened by using the thumb, but needs to be opened by using other fingers, which are not convenient to exert force as the thumb, and are inconvenient to open the flip cover 3 by one hand.

Case (2): only the distal end of the female screw 21 is provided with a second limiting portion 211. When the screw cap 2 is screwed down, the bending portion 31 is located at the non-front side of the flip cover 3, and the external thread 12 abuts against the second limiting portion 211.

In this case, the second limiting portion 211 can prevent the screwing cap 2 from being excessively screwed, so that the screwing end point is unique, and the position of the screwing cap 2 during screwing can be uniquely positioned, and further, the opening position of the flip cover 3 can be uniquely determined, so that the flip cover 3 can be conveniently opened by one hand.

Case (3): the end of the external thread 12 is provided with a first limiting part 121, the end of the internal thread 21 is provided with a second limiting part 211, and the rotation angle of the internal thread 21 is equal to the rotation angle of the external thread 12. When the screw cap 2 is screwed, the bending portion 31 is located on the non-front side of the flip cover 3, the internal thread 21 abuts against the first limiting portion 121, and the external thread 12 abuts against the second limiting portion 211.

In the present embodiment, the rotation angle of the female screw 21 and the rotation angle of the male screw 12 are 360 °. The rotation angle of the external thread 12 is 360 degrees, which means that the initial end of the external thread 12 is positioned right above the tail end of the external thread 12 after surrounding the bottle mouth 1 for one circle; the rotation angle of the internal thread 21 is 360 °, which means that the start of the internal thread 21 is located right under the end of the internal thread 21 after surrounding the inner wall of the screw cap 2 by one turn.

In this case, the first limiting portion 121 and the second limiting portion 211 can prevent the screwing cap 2 from being screwed excessively, so that the screwing end point is unique, and the direction of the screwing cap 2 when being screwed can be uniquely positioned, and further, the opening direction of the flip cover 3 can be uniquely determined, so that the flip cover 3 can be opened by one hand.

Case (4): the end of the external thread 12 is provided with a first limiting part 121, the end of the internal thread 21 is provided with a second limiting part 211, and the rotation angle of the internal thread 21 is smaller than that of the external thread 12. When the screw cap 2 is screwed, the bending portion 31 is located on the non-front side of the flip cover 3, the external thread 12 abuts against the second limiting portion 211, and the internal thread 21 cannot abut against the first limiting portion 121.

In this case, the second limiting portion 211 may prevent the screw cap 2 from being excessively screwed, and may enable the screwing end to be unique, and may uniquely position the position of the screw cap 2 when screwed, and further, may uniquely determine the opening position of the lid 3, so as to facilitate opening the lid 3 with one hand.

Case (5): the end of the external thread 12 is provided with a first limiting part 121, the end of the internal thread 21 is provided with a second limiting part 211, and the rotation angle of the internal thread 21 is larger than that of the external thread 12. When the screw cap 2 is screwed, the bending portion 31 is located on the non-front side of the lid 3, the internal thread 21 abuts against the first limiting portion 121, and the external thread 12 cannot abut against the second limiting portion 211.

In this case, the first limiting portion 121 may prevent the screw cap 2 from being excessively screwed, may enable the screwing end to be unique, may uniquely position the position of the screw cap 2 when screwed, may uniquely determine the opening position of the lid 3, and is convenient for opening the lid 3 with one hand.

As can be seen from the cases (1), (2), (3), (4) and (5), the arrangement of the first and/or second stopper portions 121 and 211 can uniquely determine the tightening end point of the screw cap 2, and thus the orientation of the screw cap 2 when being screwed.

Since the orientation of the screw cap 2 when screwed down can be uniquely determined, the opening orientation of the flip cover 3 located on the screw cap 2 can also be uniquely determined. Moreover, when the screwing cap 2 is screwed, the non-front side of the flip cover 3 is provided with the bending part 31, and the non-front side of the flip cover 3 means that the flip cover 3 does not face one side of a user, so that the direction of opening the flip cover 3 is always not deviated from the user, and therefore, the user can be allowed to directly use the thumb of one hand to open the flip cover 3, and the flip cover 3 can be opened by one hand conveniently.

Further, as shown in fig. 6 and fig. 7, in order to more conveniently open the flip cover 3, an opening slot 34 is provided on a side of the flip cover 3 away from the bending portion 31, and the opening slot 34 is provided to provide a force application position for a user to open the flip cover 3 with a thumb of a single hand, thereby more conveniently opening the flip cover 3.

The flip type positioning bottle cap of the embodiment has the effect of being convenient for one-hand opening and can also have the effect of preventing oil dripping. For example, in the case where the packing box is filled with oil, the flip is opened, the packing box is tilted, the oil is poured out from the mouth 23, and the pressure inside the packing box is reduced as the oil is poured out; when the packing box is restored, because the internal pressure of the packing box is smaller than the external pressure, the pressure difference exists between the inside of the packing box and the outside, so that the oil near the bottle mouth 23 can be sucked back into the packing box, and the oil dripping prevention effect is achieved.

Example 2:

this example 2 is a further improvement over example 1:

The first positioning protrusion 111 may be provided with only one. Alternatively, two first positioning projections 111 may be provided, and the annular rim 11 is provided between the two first positioning projections 111, the two first positioning projections 111 being different in size. In fig. 1, 2, 6, 7, and 8, two first positioning projections 111 are provided on the annular rim 11.

As shown in fig. 7, in order to increase the strength of the annular rim 11, a plurality of reinforcing ribs 112 are provided on the bottom surface of the annular rim 11, which are uniformly distributed in the circumferential direction. Specific: in this embodiment, a plurality of holes are formed on the bottom surface of the annular rim 11, and the reinforcing ribs 112 are formed on the hole wall between two adjacent holes.

As shown in fig. 4 to 8, in order to screw or unscrew the screw cap 2 conveniently, the outer side surface of the screw cap 2 is provided with resistance increasing threads 24, and the resistance increasing threads 24 can increase the friction resistance between the fingers of a user and the screw cap 2, so that the user can screw the screw cap off conveniently.

As shown in fig. 2 and 3, in order to improve the sealing effect, a sealing cap 4 is provided in the bottle mouth 1, the top surface of the sealing cap 4 is provided with a pull ring 41, one end of the pull ring 41 is suspended, one end of the pull ring 41 away from the suspended end is connected with the sealing cap 4 through a connecting portion 42, and the pull ring 41, the connecting portion 42 and the sealing cap 4 are integrally injection molded.

After unscrewing the screw cap 2, the hanging end of the pull ring 41 can be hooked by a finger to pull downwards, and the pull ring 41 drives the sealing cap 4, so that the edge of the sealing cap 4 is torn off from the inner wall of the bottle mouth 1, and the sealing cap 4 can be torn off to expose the bottle mouth 1.

Example 3:

this example 3 is a further improvement over example 1 or example 2:

As shown in fig. 9 and 10, the flip-top positioning bottle cap of this embodiment 3 is different from the flip-top positioning bottle cap of embodiment 1.

As shown in fig. 9 and 10, in addition to the first positioning projections 111, the present embodiment further provides a plurality of second positioning projections 13 on the outer wall of the bottle mouth 1.

For example, in embodiment 3, four second positioning projections 13 are provided, the four second positioning projections 13 are uniformly distributed around the bottle mouth 1, and the second positioning projections 13 are located above the first positioning projections 111.

When the bottle mouth 1 is mounted on the packing box, the bottle mouth 1 is welded on the packing box. When welding, the first positioning convex part 111 is positioned on the inner wall of the packaging box, and the second positioning convex part 13 is positioned on the outer wall of the packaging box. Compared with the way that only the first positioning convex part 111 is arranged, the second positioning convex part 13 is additionally arranged, so that the accuracy and the reliability of welding and positioning of the bottle mouth 1 on the packaging box can be improved.

In addition, in fig. 1 to 8 of embodiment 1, the engagement recess 32 and the blocking portion 33 are not visible, and in fig. 10 of embodiment 3, the engagement recess 32 and the blocking portion 33 are visible.

Further, an annular first sealing edge 14 is arranged on the upper edge of the bottle opening 1, the upper end of the first sealing edge 14 extends outwards, and the first sealing edge 14 and the bottle opening 1 are of an integral structure; the inner top wall of the screwing cap 2 is provided with an annular second sealing edge 25, and the second sealing edge 25 and the screwing cap 2 are of an integral structure.

As the screw cap 2 is gradually screwed on, the second sealing rim 25 gradually squeezes into the interior of the first sealing rim 14. When screwing down the screwing cap 2, the outer side wall of the second sealing edge 25 is attached to the inner side wall of the first sealing edge 14, so that the sealing effect is improved.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The flip type positioning bottle cap is characterized in that a first positioning convex part is arranged on the bottle opening, the external thread and the internal thread are respectively arranged, the flip is connected with the screw cap through a bending part, and the flip is in clamping fit with the screw cap;

When the tail end of the external thread is provided with a first limiting part and the screwing cover is screwed up, the bending part is positioned at the non-front side of the flip cover, and the internal thread is abutted with the first limiting part;

Or when the tail end of the internal thread is provided with a second limiting part and the screwing cover is screwed, the bending part is positioned at the non-front side of the flip cover, and the external thread is abutted with the second limiting part;

Or when the tail end of the external thread is provided with a first limiting part, the tail end of the internal thread is provided with a second limiting part, the rotation angle of the internal thread is equal to that of the external thread, and the screwing cap is screwed down, the bending part is positioned at the non-front side of the flip cover, the internal thread is abutted with the first limiting part, and the external thread is abutted with the second limiting part;

Or when the tail end of the external thread is provided with a first limiting part, the tail end of the internal thread is provided with a second limiting part, the rotation angle of the internal thread is smaller than that of the external thread, and the screwing cover is screwed down, the bending part is positioned at the non-front side of the flip cover, and the external thread is abutted with the second limiting part;

or when the tail end of the external thread is provided with a first limiting part, the tail end of the internal thread is provided with a second limiting part, the rotation angle of the internal thread is larger than that of the external thread, and when the screwing cover is screwed up, the bending part is positioned on the non-front side of the flip cover, and the internal thread is abutted with the first limiting part.

2. A flip top positioning bottle cap as claimed in claim 1, wherein the rotation angle of said internal thread and said external thread is 360 °.

3. The flip-type positioning bottle cap according to claim 1, wherein the upper end of the screwing cap is provided with a clamping convex part, and the inner wall of the flip-type positioning bottle cap is provided with a clamping concave part, and the clamping convex part is matched with the clamping concave part.

4. A flip-type positioning bottle cap as claimed in claim 3, wherein the upper end of the screw cap is provided with a fixing ring and a bottle neck, the bottle neck is arranged on the inner ring of the fixing ring, the fixing ring is provided with the clamping convex part, the flip-type positioning bottle cap is buckled on the fixing ring and the bottle neck, the inner top wall of the flip-type positioning bottle cap is provided with a blocking part, and the blocking part is matched with the bottle neck.

5. The flip-top positioning bottle cap of claim 1, wherein said flip-top is provided with an opening groove on a side facing away from said bending portion.

6. The flip-top positioning bottle cap according to claim 1, wherein an annular edge is arranged on the outer side of the lower end of the bottle mouth, and the first positioning convex part is arranged on the outer ring of the annular edge.

7. The flip-top positioning bottle cap of claim 6, wherein said first positioning protrusion is provided with one;

or the two first positioning convex parts are arranged, the two first positioning convex parts are different in size, and the annular edge is arranged between the two first positioning convex parts.

8. The flip-top positioning bottle cap according to claim 6, wherein the outer wall of the bottle mouth is provided with a second positioning convex part, and the second positioning convex part is arranged above the first positioning convex part.

9. The flip-top positioning bottle cap according to claim 1, wherein the upper end of the bottle mouth is provided with an annular first sealing edge, the upper end of the first sealing edge extends outwards, the inner top wall of the screw cap is provided with an annular second sealing edge, and the inner side wall of the first sealing edge is matched with the outer side wall of the second sealing edge.

10. The flip-top positioning bottle cap as claimed in claim 1, wherein a sealing cap is arranged in the bottle mouth, a pull ring is arranged on the top surface of the sealing cap, one end of the pull ring is suspended, and one end of the pull ring far away from the suspended end is connected with the sealing cap through a connecting part.