A bottle cap

Abstract

The present invention discloses a bottle cap, comprising a seat, a sealing film connected to the bottom of the seat, a piercing member located in the seat, and an upper cover threadedly connected to the seat to drive the piercing member to rotate to cut the sealing film. A spiral guide rail is provided between the seat and the piercing member, so that when the upper cover rotates relative to the seat, the upper cover moves in a direction away from the sealing film and the piercing member moves in a direction toward the sealing film. In the process of opening the bottle cap, the upper cover in the present invention rotates while moving in a direction away from the sealing film. Under the drive of the upper cover and the guidance of the spiral guide rail, the piercing member rotates downward to cut the sealing film. A spiral guide rail is provided between the seat and the piercing member. When the piercing member moves downward, only a small force is required to act on the upper cover, and the piercing member will pierce the sealing film at the bottom of the seat. When the upper cover is completely unscrewed, the piercing member will cut the sealing film, thereby opening the bottle cap.

Description

Technical Field

[0001] The invention relates to the technical field of bottle cap structures, and in particular to a bottle cap. Background Art

[0002] At present, there are many structures of bottle caps for reclosing food packaging. The typical structure is: a base body integrated with the bottle body, a piercing member for opening the seal, and an upper cover for opening and sealing the bottle body. The bottle body usually has a pouring opening, which is often sealed from the inside of the bottle body with a gas- and water-tight film, thereby completing the complete sealing of the bottle body and protecting the bottle content from environmental influences.

[0003] When the upper cover of the existing bottle cap is rotated counterclockwise to open, the driving piece arranged inside the upper cover will also rotate counterclockwise with the upper cover. When the driving piece rotates counterclockwise, the inclined surface of the driving piece in contact with the driving gear will squeeze the gear downward, so that the entire piercing member moves downward. When moving downward, the piercing teeth arranged at the bottom of the piercing member will pierce the sealing film at the bottom of the lower cover. When the upper cover is completely unscrewed, the piercing member will be pushed to the bottom of the lower cover, and the sealing film will be pushed open at this time. However, since the driving piece forcibly squeezes the gear downward, it is necessary for a person to use a large force on the upper cover to open the bottle cap. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a bottle cap, which solves the technical problem that the drive plates in the existing upper cover force the gears downward, so that a large force is required to open the bottle cap manually.

[0005] The present invention is implemented by the following technical solutions:

[0006] The present invention provides a bottle cap, comprising a seat body, a sealing film connected to the bottom of the seat body, a piercing piece located in the seat body, and an upper cover threadedly connected to the seat body for driving the piercing piece to rotate so as to cut the sealing film. A spiral guide rail is provided between the seat body and the piercing piece, so that when the upper cover rotates relative to the seat body, the upper cover moves in a direction away from the sealing film and the piercing piece moves in a direction toward the sealing film.

[0007] Furthermore, one of the seat body and the piercing member is provided with a plurality of guide posts, and the other of the seat body and the piercing member is provided with a plurality of sliding grooves extending in a spiral shape for each of the guide posts to slide therein, and the guide posts and the sliding grooves together form the spiral guide rail.

[0008] Furthermore, the slide groove is arranged on the outer surface of the piercing member, and the angle between the slide groove and the bottom end surface of the piercing member is 30 to 60 degrees.

[0009] Furthermore, the guide posts include at least one pair of first guide posts that are oppositely arranged and close to the top end surface of the seat body and at least one pair of second guide posts that are oppositely arranged and close to the bottom end surface of the seat body, the slide groove includes a first curved groove that matches the first guide post and a second curved groove that matches the second guide post, a curved portion that abuts against the first guide post is provided in the first curved groove, and a stop portion is provided near the top of the piercing member in the second curved groove for preventing the second guide post from detaching from the second curved groove after moving up.

[0010] Furthermore, the number of the first guide pillars and the number of the second guide pillars are both two, and the two first guide pillars and the two second guide pillars are respectively distributed on the inner side wall of the seat body at equal intervals along the circumferential direction.

[0011] Furthermore, the first curved groove is provided with a first protrusion which cooperates with the curved portion to clamp the first guide column, and the second curved groove is provided with a second protrusion which cooperates with the stop portion to clamp the second guide column.

[0012] Furthermore, the bottom end surface of the piercing member has a curved piercing tooth and notches at both ends respectively connected to the two ends of the piercing tooth.

[0013] Furthermore, a plurality of driving plates are convexly provided at intervals on the inner top surface of the upper cover, each of the driving plates has a guide surface, and a plurality of gear teeth are provided on the inner side of the piercing member, respectively abutting against each of the guide surfaces for each of the driving plates to press and lift.

[0014] Furthermore, the guiding surface is an inclined arc-shaped surface.

[0015] Furthermore, an annular convex strip is provided on the outer side of the base body, and at least one card slot is provided on the annular convex strip. The bottle cap also includes an anti-theft ring, and the anti-theft ring includes an annular baffle and a plurality of anti-rotation teeth provided on the inner side of the annular baffle and respectively inserted into each of the card slots. The annular baffle is connected to the upper cover via the anti-rotation teeth.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the process of opening the cover, the upper cover of the present invention rotates and moves in a direction away from the sealing film. The piercing member is driven by the upper cover and guided by the spiral guide rail, and the piercing member rotates downward to cut the sealing film. A spiral guide rail is provided between the seat body and the piercing member. When the piercing member moves downward, only a small force is required to act on the upper cover, and the piercing member will pierce the sealing film at the bottom of the seat body. When the upper cover is completely unscrewed, the piercing member will cut the sealing film, thereby opening the bottle cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic structural diagram of a bottle cap according to an embodiment of the present invention at one angle;

[0019] Figure 2 An exploded view of a bottle cap according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic structural diagram of a bottle cap from another angle according to an embodiment of the present invention;

[0021] Figure 4 for Figure 3 Structural diagram of the AA section;

[0022] Figure 5 This is a schematic structural diagram of a piercing member at an angle according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the piercing member of an embodiment of the present invention from another angle;

[0024] Figure 7 This is a schematic diagram of the structure of the seat body according to an embodiment of the present invention;

[0025] Figure 8 It is a schematic structural diagram of an upper cover according to an embodiment of the present invention.

[0026] In the figure: 1. seat body; 11. pouring opening; 12. guide column; 121. first guide column; 122. second guide column; 13. annular convex strip; 131. slot; 2. sealing film; 3. piercing member; 31. slide groove; 32. first curved groove; 321. curved portion; 322. first convex point; 33. second curved groove; 331. stop portion; 332. second convex point; 34. piercing tooth; 35. notch; 36. gear tooth; 4. upper cover; 41. drive plate; 411. guide surface; 42. rib; 5. spiral guide rail; 6. anti-theft ring; 61. annular retaining strip; 62. anti-rotation tooth. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0028] like Figure 1-8As shown, the present invention provides a bottle cap, which includes a base 1, a sealing film 2, a piercing member 3 and an upper cover 4. The base 1 is a part of the bottle body, and a pouring opening 11 is provided on the base 1. The sealing film 2 is connected to the bottom of the base 1. The piercing member 3 is located in the base 1, that is, the piercing member 3 is located in the pouring opening 11. The upper cover 4 is threadedly connected to the base 1, and the upper cover 4 is used to drive the piercing member 3 to rotate to cut the sealing film 2 by rotating the upper cover 4. A spiral guide 5 is provided between the base 1 and the piercing member 3, so that when the upper cover 4 rotates relative to the base 1, the upper cover 4 moves in a direction away from the sealing film 2 and the piercing member 3 moves in a direction toward the sealing film 2. In the present invention, the piercing member 3 is driven by the counterclockwise rotation of the upper cover 4, and the piercing member 3 rotates counterclockwise and moves downward under the guidance of the spiral guide 5. A spiral guide rail 5 is provided between the base body 1 and the piercing member 3. When the piercing member 3 moves downward, only a small force is required to act on the upper cover 4, and the piercing member 3 will pierce the sealing film 2 at the bottom of the base body 1. When the upper cover 4 is completely unscrewed, the piercing member 3 will cut the sealing film 2, thereby opening the bottle cap.

[0029] like Figure 5-7 As shown, as a preferred embodiment, one of the body 1 and the piercing member 3 is provided with a plurality of guide posts 12, and the other of the body 1 and the piercing member 3 is provided with a plurality of slide grooves 31 extending in a spiral shape for the guide posts 12 to slide therein, respectively, and the guide posts 12 and the slide grooves 31 together form a spiral guide rail 5. In this embodiment, the piercing member 3 is sleeve-shaped, the slide groove 31 is provided on the outer surface of the piercing member 3, and the plurality of guide posts 12 are provided on the inner side of the body 1, and the angle between the slide groove 31 and the bottom end surface of the piercing member 3 is 30 to 60 degrees.

[0030] The guide pillars 12 include at least one pair of first guide pillars 121 that are oppositely arranged and close to the top end surface of the base body 1 and at least one pair of second guide pillars 122 that are oppositely arranged and close to the bottom end surface of the base body 1. The first guide pillars 121 and the second guide pillars 122 are arranged in a high and low state. The slide groove 31 includes a first curved groove 32 that matches the first guide pillar 121 and a second curved groove 33 that matches the second guide pillar 122. A curved portion 321 that abuts against the first guide pillar 121 is provided in the first curved groove 32. When installing the bottle cap, the curved portion 321 can be used to quickly install the piercing member 3 in place. A stopper 331 is provided near the top of the piercing member 3 to prevent the second guide pillar 122 from escaping from the second curved groove 33 after moving up.

[0031] In this embodiment, the number of the first guide pillars 121 and the number of the second guide pillars 122 are both two, and the two first guide pillars 121 and the two second guide pillars 122 are respectively distributed on the inner side wall of the seat body 1 in a "cross" shape and at equal intervals along the circumferential direction.

[0032] As a preferred embodiment, the first curved groove 32 is further provided with a first convex point 322 that cooperates with the curved portion 321 to clamp the first guide column 121, and the second curved groove 33 is further provided with a second convex point 332 that cooperates with the stopper 331 to clamp the second guide column 122. In the initial position when the bottle cap is not opened, the first guide column 121 is located between the curved portion 321 and the first convex point 322, and the second guide column 122 is located at the bottom of the second curved groove 33; during the opening process of the bottle cap, the first guide column 121 will directly pass over the first convex point 322 and move upward along the first curved groove 32, and the second guide column 122 will move upward along the second curved groove 33; after the bottle cap is opened, the first guide column 121 has been separated from the first curved groove 32, and the second guide column 122 will move to between the stopper 331 and the second convex point 332. It should be noted that, since the first protrusion 322 and the second protrusion 332 are very small in size, a large force applied to each guide post can directly pass over the first protrusion 322 or the second protrusion 332 .

[0033] The bottom end surface of the piercing member 3 has a piercing tooth 34 bent to pierce the sealing film 2 and a notch 35 at both ends respectively connected to the two ends of the piercing tooth 34. When the piercing member 3 rotates downward to pierce the sealing film 2, the sealing film 2 will not completely fall into the bottle body, and due to the notch 35, a part of the sealing film 2 is still connected to the base body 1.

[0034] like Figure 8 As shown, a plurality of driving pieces 41 are convexly arranged at intervals on the inner top surface of the upper cover 4, each driving piece 41 has a guide surface 411, and the guide surface 411 is an inclined arc surface. A plurality of gear teeth 36 are respectively abutted with the guide surfaces 411 for each driving piece 41 to press and lift. The plurality of driving pieces 41 are located on the same circumference, and a plurality of ribs 42 are arranged at intervals on the inner side of each driving piece 41 to strengthen the strength of the driving piece 41. The number of driving pieces 41 is the same as the number of gear teeth 36. In the initial state, the gear teeth 36 are stuck between two adjacent driving pieces 41. When the upper cover 4 is rotated, the driving piece 41 on the upper cover 4 presses the gear teeth 36 to make the piercing piece 3 rotate and move downward.

[0035] An annular convex strip 13 is provided on the outer side of the base body 1, and at least one locking groove 131 is provided on the annular convex strip 13. The bottle cap also includes an anti-theft ring 6, which includes an annular baffle 61 and a plurality of anti-rotation teeth 62 provided on the inner side of the annular baffle 61 and respectively inserted into each locking groove 131. The annular baffle 61 is connected to the upper cover 4 through the anti-rotation teeth 62, so that the bottle cap is in a locked state; when the bottle cap needs to be opened, the upper cover 4 is rotated with force, and the force causes the upper cover 4 to separate from the anti-theft ring 6, while the anti-theft ring 6 still remains connected to the base body 1 because the anti-rotation teeth 62 are accommodated in the locking groove 131. Of course, the anti-theft ring 6 can also be separated from the upper cover 4 with scissors.

[0036] The working principle of the bottle cap in the present invention is as follows: the upper cover 4 is rotated forcefully to first disengage the upper cover 4 from the anti-theft ring 6, and at the same time, the first guide column 121 will be separated from the restriction of the curved portion 321 and the first convex point 322; the upper cover 4 is continued to be rotated, and each driving piece 41 in the upper cover 4 will be pressed against each gear tooth 36 to drive each gear tooth 36 to rotate downward along the guide surface 411 of each driving piece 41, and the first guide column 121 will directly pass over the first convex point 322 and move upward along the first curved groove 32, and the second guide column 122 will move upward along the second curved groove 33, and the piercing member 3 will rotate downward as a whole to pierce the sealing film 2; when the bottle cap is opened, at this time, the first guide column 121 has been separated from the first curved groove 32, and the second guide column 122 will move to between the stop portion 331 and the second convex point 332, and the sealing film 2 is cut by the piercing member 3. When the bottle cap is started to be put on, the driving plates 41 in the upper cover 4 will press against the gear teeth 36 to drive the gear teeth 36 to run in the opposite direction along the guide surfaces 411 of the driving plates 41. At this time, the second guide column 122 will break away from the restrictions of the stopper 331 and the second protrusion 332 and run downward along the second curved groove 33, and the first guide column 121 will then run downward along the first curved groove 32. When the bottle cap is tightened, the first guide column 121 is located between the curved portion 321 and the first protrusion 322, and the gear teeth 36 are respectively located between two adjacent driving plates 41.

[0037] To sum up, when the upper cover 4 is rotated counterclockwise to open, the driving piece 41 arranged inside the upper cover 4 will also rotate counterclockwise with the upper cover 4. When the driving piece 41 rotates counterclockwise, the guiding surface 411 on the driving piece 41 will squeeze the gear 36 downward, causing the entire piercing member 3 to rotate counterclockwise and move downward. When moving downward, the piercing tooth 34 arranged at the bottom of the piercing member 3 will pierce the sealing film 2 at the bottom of the seat body 1. When the upper cover 4 is completely unscrewed, the piercing member 3 will be pushed to the bottom of the seat body 1. At this time, the sealing film 2 will be completely opened, and the curved groove matched with each guide column is changed from the previous vertical setting to a spiral inclined setting. The four guide columns on the inner side of the seat body 1 are stuck in each slide groove 31. Driven by the driving piece 41 of the upper cover 4, the entire piercing member 3 rotates counterclockwise and moves downward, making it easier for the piercing tooth 34 to cut the sealing film 2.

[0038] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A bottle cap, characterized in that: The invention comprises a seat body, a sealing film connected to the bottom of the seat body, a piercing member located in the seat body, and an upper cover threadedly connected to the seat body for driving the piercing member to rotate so as to cut the sealing film, wherein a spiral guide rail is arranged between the seat body and the piercing member, so that during the rotation of the upper cover relative to the seat body, the upper cover moves in a direction away from the sealing film and the piercing member moves in a direction toward the sealing film; One of the seat body and the piercing member is provided with a plurality of guide posts, and the other of the seat body and the piercing member is provided with a plurality of sliding grooves extending in a spiral shape for the guide posts to slide therein, respectively, and the guide posts and the sliding grooves together form the spiral guide rail; The guide posts include at least one pair of first guide posts that are oppositely arranged and close to the top end surface of the seat body and at least one pair of second guide posts that are oppositely arranged and close to the bottom end surface of the seat body, the slide groove includes a first curved groove that matches the first guide post and a second curved groove that matches the second guide post, the first curved groove is provided with a curved portion that abuts against the first guide post, and the second curved groove is provided with a stopper near the top of the piercing member for preventing the second guide post from escaping from the second curved groove after moving up; The first curved groove is also provided with a first protrusion that cooperates with the curved portion to clamp the first guide column, and the second curved groove is also provided with a second protrusion that cooperates with the stop portion to clamp the second guide column.

2. The bottle cap according to claim 1, characterized in that: The slide groove is arranged on the outer surface of the piercing member, and the included angle between the slide groove and the bottom end surface of the piercing member is 30 to 60 degrees.

3. The bottle cap according to claim 1, characterized in that: The number of the first guide posts and the number of the second guide posts are both two, and the two first guide posts and the two second guide posts are respectively distributed on the inner side wall of the seat body at equal intervals along the circumferential direction.

4. The bottle cap according to any one of claims 1 to 3, characterized in that: The bottom end surface of the piercing member is provided with a curved piercing tooth and notches at both ends of which are respectively connected to the two ends of the piercing tooth.

5. The bottle cap according to any one of claims 1 to 3, characterized in that: A plurality of driving plates are convexly arranged at intervals on the inner top surface of the upper cover, each of the driving plates has a guide surface, and a plurality of gear teeth are arranged on the inner side of the piercing member, which are respectively in contact with the guide surfaces and are used for the driving plates to press and lift.

6. The bottle cap according to claim 5, characterized in that: The guiding surface is an inclined arc-shaped surface.

7. The bottle cap according to any one of claims 1 to 3, characterized in that: An annular convex strip is provided on the outer side of the base body, and at least one card slot is provided on the annular convex strip. The bottle cap also includes an anti-theft ring, which includes an annular baffle and a plurality of anti-rotation teeth provided on the inner side of the annular baffle and respectively inserted into each of the card slots. The annular baffle is connected to the upper cover via the anti-rotation teeth.

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