A puncture cap structure

Abstract

This utility model discloses a puncture cap structure, including a fixing seat, a base, a top cover, and a puncture component. The base contains a base sealing membrane and a base body. The lower end of the base body is inserted into the fixing seat and engaged with it to form a seal. The upper end of the inner wall of the base body has a first internal thread. The puncture component includes a puncture component body, the outer wall of which has a second external thread. The lower end of the puncture component body has a thorn. The inner side of the top cover has a lever. This utility model, through the rotational connection between the top cover and the base, the base and the puncture component, and the cooperative design of the lever and the stop, enables the puncture component to move downwards to puncture the base sealing membrane when the top cover is rotated upwards to open. The multi-layer sealing structure design between the base, the fixing seat, and the top cover ensures absolute sealing of the puncture cap structure during storage, preventing liquid leakage and deterioration. All components of this puncture cap structure are integrated into a single cap body, making it simple to use and requiring no additional tools.

Description

Technical Field

[0001] This utility model relates to the field of bottle cap technology, and in particular to a puncture cap structure. Background Technology

[0002] Bottle caps are used to seal bottles, maintaining the seal of the product inside and preventing spoilage or leakage. They are a crucial part of food and beverage packaging. Most beverages on the market are packaged in liquid containers (including bottles, boxes, or bags) and then sealed with caps.

[0003] Currently, most bottle caps on the market use a single-layer seal, which involves sealing the bottle opening with a sealing film. However, opening these caps requires an additional pointed tool or knife to pierce or cut the sealing film, allowing the liquid inside the packaging to be poured out, making them relatively inconvenient to use. There are also rotary puncture caps with a puncture function, such as the rotary puncture cap for soft bags disclosed in patent publication number CN120229448A. This cap includes an upper cover and a base, with a puncture inner cutting blade inside the base. The upper cover includes a cap body, the inner wall of which has a first internal thread, and a screwing structure on the inner side of the top of the cap body, which is inserted into the puncture inner cutting blade. However, the structure of the upper cover and base of this rotary puncture cap is relatively complex, difficult to manufacture, and only suitable for use on soft bags, limiting its application. Utility Model Content

[0004] The purpose of this invention is to provide a puncture cap structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a puncture cap structure, including a fixed seat, a base, a top cover, and a puncture component. The upper and lower ends of the base are respectively connected to the top cover and the fixed seat. A base sealing membrane is provided inside the base. The puncture component is screwed onto the base and located above the base sealing membrane and is used to puncture the base sealing membrane. Both the fixed seat and the base are cylindrical structures with openings at both the upper and lower ends. The base includes a base body. The lower end of the base body is inserted into the fixed seat and is fastened to the fixed seat to form a seal. The upper end of the inner wall of the base body is provided with a first internal thread. The puncture component includes a puncture component body. The outer wall of the puncture component body is provided with a second external thread that screws onto the first internal thread. The lower end of the puncture component body is provided with a thorn for puncturing the base sealing membrane. The puncture component body is a cylindrical structure with openings at both the upper and lower ends. The hollow cavity of the puncture component body passes downward through the thorn and communicates with the hollow cavity of the base body. The inner side of the top cover is provided with a lever for driving the puncture component to rotate.

[0006] Further optimization involves having multiple thorns that extend downwards along the lower circumferential edge of the puncture body, with the thorns positioned at local locations on the puncture body and occupying a space smaller than half the circumference of the puncture body.

[0007] Further optimization involves a single thorn with a hollow cone structure. The upper circumferential surface of the thorn is connected to the lower circumferential surface of the puncture component body. The side of the thorn has several liquid outlet holes for connecting the hollow cavity of the puncture component body and the hollow cavity of the base body, ensuring that liquid can flow out through the puncture component after the base sealing membrane is punctured.

[0008] Further optimization involves the fixing base comprising a cylindrical fixing base body. The upper end of the inner wall of the fixing base body protrudes inward to form an inner buckle that engages with the base body. The lower end of the outer wall of the base body is provided with an outer buckle that engages with the inner buckle. The outer buckle and the fixing base body are press-fitted together to form a sealing structure. The outer wall of the base body is provided with a raised limiting ring along its circumference. The lower side of the limiting ring abuts against the upper end of the fixing base body.

[0009] Further optimization involves providing an outwardly protruding flange at the upper end of the main body of the fixing base. The flange has a semi-circular arc structure. The outer wall of the main body of the base has an outwardly protruding arc-shaped portion along its circumference. The arc-shaped portion is located below the outer buckle. The outer wall of the main body of the fixing base has an outwardly protruding first reinforcing rib along its circumference and at the position corresponding to the arc-shaped portion, thereby improving the structural strength of the main body of the fixing base.

[0010] Further optimization includes a connecting part at the lower end of the fixed base body, a plug-in part formed by the inward tapering of the lower end of the base body, a wave-shaped design on the outer side of the limiting ring, and a first external thread on the outer wall of the base body that screws onto the upper cover. The first external thread is located above the limiting ring.

[0011] Further optimization involves the upper cover comprising a cover body, which is a cylindrical structure with a sealed top and an open bottom. The side wall of the cover body is provided with a second internal thread that screws into the first external thread. The inner top wall of the cover body is provided with a downwardly protruding sealing ring along its circumference. The lever is disposed on the inner top wall of the cover body, and the sealing ring is disposed on the opposite outer side of the lever. The sealing ring and the side wall of the cover body are wrapped around the inner and outer sides of the upper end of the base body and form a sealing structure.

[0012] Further optimization involves having at least one paddle, which is an arc-shaped sheet structure that is wider at the top and narrower at the bottom. The inner wall of the piercing component body is provided with a stop block that cooperates with the paddle. The stop block has a serrated structure and is inclined toward the paddle block it contacts. The side of the stop block that does not contact the paddle is an arc-shaped convex surface. When the rotation direction of the top cover is the tightening direction, the paddle slides along the arc-shaped convex surface of the stop block and will not push the stop block to rotate, that is, it will not drive the piercing component body to rotate downward.

[0013] Further optimization involves providing at least one second reinforcing rib arranged vertically on the inner side of the lever block, and having several outwardly protruding anti-slip patterns evenly distributed along the circumference of the outer wall of the cover body to facilitate rotating the cover.

[0014] Beneficial effects: The puncture cap structure of this utility model, through the rotational connection between the upper cover and the base, the rotational connection between the base and the puncture component, and the cooperative design of the inner paddle block in the upper cover and the inner stop block in the puncture component, enables the paddle block to drive the stop block to rotate synchronously when the upper cover is rotated upward to open, thereby driving the puncture component to puncture the base sealing film inside the base downward, facilitating the outflow of liquid from the liquid packaging body. In addition, the first internal thread inside the base and the second external thread outside the puncture component can ensure that the puncture component rotates smoothly downward.

[0015] The multi-layered sealing structure design between the base and the fixed seat, and between the base and the top cover ensures absolute sealing of the puncture cap structure during storage, preventing liquid leakage and deterioration. Specifically, the three-layer sealing structure ensures the sealing performance between the base and the fixed seat through the seal between the outer buckle of the base and the inner wall of the fixed seat, the seal between the arc-shaped part and the inner wall of the fixed seat, and the seal between the limiting ring and the flange. The three-layer sealing structure also ensures the sealing performance between the base and the top cover through the seal of the base sealing film, the seal between the first external thread and the second internal thread, and the seal between the sealing ring, the side wall of the cap body, and the upper end of the base body.

[0016] The fastening connection between the base and the fixed seat ensures that the base and the fixed seat are locked together and will not separate. Specifically, the fastening between the outer fastener of the base and the inner fastener of the fixed seat, and the limiting between the limiting ring of the base and the flange of the fixed seat, ensure a firm connection between the base and the fixed seat.

[0017] All components of the puncture cap structure are integrated into a single cap body, making it simple to use and requiring no additional tools for puncture. Furthermore, the puncture cap structure is adaptable to use on liquid bottles, packaging boxes, and packaging bags, offering a wide range of applications. Its simple structure also makes it easy to manufacture. Attached Figure Description

[0018] Figure 1 This is an isometric structural diagram of the puncture cap structure disclosed in the embodiments of this utility model;

[0019] Figure 2 This is a schematic front view of the puncture cap structure disclosed in the embodiment of this utility model.

[0020] Figure 3 This is a cross-sectional structural schematic diagram of one embodiment of the puncture cap structure disclosed in this utility model.

[0021] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 This is a schematic diagram of the structure of the fixing base disclosed in the embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the base structure disclosed in the embodiment of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the top cover disclosed in the embodiment of this utility model;

[0025] Figure 8 This is a schematic diagram of a piercing member with multiple thorns as disclosed in an embodiment of the present utility model.

[0026] Figure 9 This is a schematic diagram of a piercing member with only one thorn as disclosed in an embodiment of the present utility model.

[0027] Figure 10 This is a cross-sectional view of the puncture cap structure, in which the puncture member has multiple thorns, as disclosed in the embodiments of this utility model when the cap is opened and punctures the base sealing film.

[0028] Figure 11 This is a cross-sectional view of the puncture cap structure with one thorn in the puncture member disclosed in the embodiment of the present utility model when the cap is opened and the base sealing film is punctured.

[0029] Figure 12 for Figure 11 A magnified structural diagram at point B in the middle.

[0030] Reference numerals: 1-Fixed base, 11-Fixed base body, 12-Connecting part, 13-Inner snap, 14-Flange, 15-First reinforcing rib, 2-Base, 21-Base body, 22-Outer snap, 23-First external thread, 24-First internal thread, 25-Limiting ring, 26-Insertion part, 27-Arc-shaped part, 3-Top cover, 31-Cover body, 32-Second internal thread, 33-Pulse block, 34-Sealing ring, 35-Second reinforcing rib, 36-Anti-slip texture, 4-Piercing part, 41-Piercing part body, 42-Spirit, 421-Liquid outlet, 43-Second external thread, 44-Stop block, 5-Base sealing film. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figures 1-12 As shown, a puncture cap structure includes a fixing seat 1, a base 2, an upper cover 3, and a puncture element 4. The upper and lower ends of the base 2 are respectively connected to the upper cover 3 and the fixing seat 1. A base sealing membrane 5 is provided inside the base 2. The puncture element 4 is screwed to the base 2 and is located above the base sealing membrane 5 and is used to puncture the base sealing membrane 5. Both the fixing seat 1 and the base 2 are cylindrical structures with openings at both the upper and lower ends. The base 2 includes a base body 21. The lower end of the base body 21 is inserted into the fixing seat 1 and is fastened to the fixing seat 1 to form a seal. The upper end of the inner wall of 21 is provided with a first internal thread 24. The piercing member 4 includes a piercing member body 41. The outer wall of the piercing member body 41 is provided with a second external thread 43 that is screwed into the first internal thread 24. The lower end of the piercing member body 41 is provided with a thorn 42 for piercing the base sealing film 5. The piercing member body 41 is a cylindrical structure with openings at both the upper and lower ends. The hollow cavity of the piercing member body 41 passes downward through the thorn 42 and is connected to the hollow cavity of the base body 21. The inner side of the upper cover 3 is provided with a drive block 33 for rotating the piercing member 4.

[0033] In this application, the puncture cap structure is used on a liquid packaging body to achieve a seal on the liquid packaging body. During use, the seal is punctured to allow the liquid inside the packaging body to be poured out or sucked out. The liquid packaging body includes a bottle, box, or bag for holding the liquid. The puncture cap structure includes a fixing seat 1, a base 2, a top cover 3, and a puncture element 4. The fixing seat 1 is disposed on the liquid packaging body. The base 2 connects the fixing seat 1 and the top cover 3 and forms a seal on the fixing seat 1 through the connection between the base 2 and the fixing seat 1 and the base sealing film 5 inside the base 2. The top cover 3 covers and seals the base 2, further preventing liquid from flowing out through the base 2, and also seals the base 2 after the base sealing film 5 is punctured. The puncture element 4 punctures the base sealing film 5, facilitating the outflow of liquid from the liquid packaging body. Both the fixed base 1 and the base 2 are cylindrical structures that can form a liquid flow channel. This flow channel is blocked by the base sealing film 5 and will only be punctured by the puncture element 4 when in use to form a flowable channel.

[0034] In this application, the base 2 includes a base body 21 and a first internal thread 24. The upper and lower ends of the base body 21 can be inserted into the upper cover 3 and the fixed seat 1 respectively to achieve a connection. The first internal thread 24 is used for the rotational movement of the puncture member 4 and guides the puncture member 4 to move downward, thereby puncturing the sealing film 5 of the base through downward rotation. The lower end of the base body 21 is engaged with the fixed seat 1 to ensure that the base 2 will not detach from the fixed seat 1. At the same time, this engagement achieves a seal between the base 2 and the fixed seat 1, preventing liquid from flowing out through the gap between the base 2 and the fixed seat 1.

[0035] In this application, the puncture component 4 includes a puncture component body 41, a thorn 42, and a second external thread 43. The puncture component body 41 is used to connect with the base 2 and serves as the main structural component of the puncture component 4, ensuring the overall structural strength of the puncture component 4 and the placement of other components. The thorn 2 is used to puncture and cut the base sealing film 5, which is achieved through the downward rotational movement of the puncture component 4. The second external thread 43 is used to cooperate with the first internal thread 24 to guide the downward rotational movement of the puncture component body 41. The puncture component body 41 has a cylindrical structure, and its internal hollow cavity passes through the thorn 42 and communicates with the hollow cavity inside the base body 21. After the thorn 42 punctures the base sealing film 5, liquid can pass through the base body 21, the thorn 42, and the puncture component body 41 and flow out from the upper opening of the puncture component body 41, ensuring the continuity of the liquid flow channel.

[0036] In this application, the inner side of the top cover 3 is provided with a lever 33, which is used to drive the puncture member 4 to move in the opposite direction when the top cover 3 is rotated upward relative to the base 2, that is, to drive the puncture member 4 to move downward relative to the base 2, so that the puncture is punctured when the cover is opened, and the liquid in the liquid packaging can be poured out or sucked out when the cover is opened.

[0037] like Figure 8 and Figure 10 As shown, in one embodiment of this application, there are multiple thorns 42 that extend downward along the lower circumferential edge of the puncture body 41. The multiple thorns 42 are disposed at local positions of the puncture body 41 and occupy a position less than half of the circumference of the puncture body 41.

[0038] In this embodiment, there are a large number of thorns 42, which are arranged along the lower circumferential surface of the piercing body 41 and connected in sequence. The multiple thorns 42 are all V-shaped structures with different sizes and directions. Their tips point downwards, which can pierce the base sealing film 5 at multiple points and can assist each other to pierce the base sealing film 5, ensuring that the base sealing film 5 can be pierced.

[0039] In this embodiment, the position of the lower circumferential surface of the puncture body 41 occupied by the plurality of thorns 42 is less than half of the circumference of the puncture body 41, which can prevent the base sealing film 5 from being completely cut off and causing the cut part of the base sealing film 5 to fall into the liquid packaging body.

[0040] In this embodiment, the multiple spikes 42 can be the same size and have the same tip direction. The number of spikes 42 is not less than two to ensure the strength of the spikes 42 and to ensure that they can pierce the base sealing film 5.

[0041] like Figure 9 and Figure 11 As shown, in another embodiment of this application, the number of thorns 42 is one and is in the form of a hollow cone structure. The upper circumferential surface of the thorn 42 is connected to the lower circumferential surface of the puncture body 41. The side of the thorn 42 is provided with a plurality of liquid outlet holes 421 for connecting the hollow cavity of the puncture body 41 and the hollow cavity of the base body 21.

[0042] Unlike the embodiments described above, in this embodiment, there is only one thorn 42, which has a conical structure. Its upper end is connected to the lower circumferential surface of the puncture body 41, and the lower end is a pointed tip. The overall structure has high strength, ensuring that it can pierce the base sealing film 5. The conical surface of the thorn 42 is provided with several liquid outlet holes 421, which are used to connect the hollow cavity of the puncture body 41 and the hollow cavity of the base body 21, so as to realize the connection of the liquid flow channel and facilitate the liquid to flow out through the hollow cavity of the puncture body 41 and the hollow cavity of the base body 21.

[0043] like Figure 5 , Figure 6 and Figure 12 As shown, in another embodiment of this application, the fixing base 1 includes a cylindrical fixing base body 11. The upper end of the inner wall of the fixing base body 11 protrudes inward to form an inner buckle 13 that engages with the base body 21. The lower end of the outer wall of the base body 21 is provided with an outer buckle 22 that engages with the inner buckle 13. The outer buckle 22 and the fixing base body 11 are press-fitted to form a sealing structure. The outer wall of the base body 21 is provided with a raised limiting ring 25 along its circumference. The lower side of the limiting ring 25 abuts against the upper end of the fixing base body 11.

[0044] In this embodiment, the fixing base 1 includes a fixing base body 11 and an inner buckle 13. The cylindrical fixing base body 11 ensures connection with the base body 21 and allows liquid to flow from the fixing base body 11 to the base body 21. The inner buckle 13 engages with the outer buckle 22 on the base body 21, ensuring a firm connection between the fixing base body 11 and the base body 21, preventing the base 2 from separating from the fixing base 1. Simultaneously, the outer buckle 22 and the inner wall of the fixing base body 11 at the lower end of the inner buckle 13 are press-fitted, and their contact surfaces are relatively large, forming a sealing structure that prevents liquid from flowing out through the gap between the fixing base body 11 and the base body 21. A limiting ring 25 is provided in the middle of the outer wall of the base body 21, which limits the length of the base body 21 inserted into the fixing base body 11, ensuring that the base body 21 cannot move freely up and down relative to the fixing base body 11, thus ensuring the stability of the base 2 installed on the fixing base 1. At the same time, the inner buckle 13 and the outer buckle 22 limit the stability of the base 2, and the limit ring 25 abuts against the fixed base body 11 to form another sealing structure. The double-layer sealing can effectively improve the sealing effect, and together with the base sealing film 5, it forms a multi-layer sealing. The multi-layer sealing design ensures the absolute sealing of the liquid in the liquid packaging during storage, and can prevent leakage and deterioration.

[0045] Continue to refer to Figure 5 , Figure 6 and Figure 12 As shown, based on the above scheme, the upper end of the fixing body 11 is provided with an outwardly protruding flange 14. The flange 14 has a semi-circular arc structure. The outer wall of the base body 21 has an outwardly protruding arc portion 27 along its circumference. The arc portion 27 is located below the outer buckle 22. The outer wall of the fixing body 11 has an outwardly protruding first reinforcing rib 15 along its circumference and corresponding to the position of the arc portion 27. Through the structural design of the flange 14, the line contact between the flange 14 and the limiting ring 25 is tighter than that of the planar contact, resulting in a better sealing effect and effectively avoiding the gap problem caused by unevenness in planar contact. The arc portion 27 is located below the outer buckle 22 and can abut against the inner wall of the fixing body 11 to form a seal, adding a layer of sealing structure between the fixing body 11 and the base body 21, further improving the sealing performance between the fixing body 1 and the base 2. The first reinforcing rib 15 is provided corresponding to the arc-shaped part 27, which can improve the structural strength of the part of the fixed seat body 11 corresponding to the arc-shaped part 27, prevent the fixed seat body 11 from deforming, and ensure the sealing effect between the fixed seat 1 and the base 2.

[0046] like Figure 1 , Figures 4-6 , Figure 10 and Figure 11As shown, furthermore, the lower end of the fixing body 11 is provided with a connecting part 12, and the lower end of the base body 21 gradually tapers inward to form an insert part 26. The outer side of the limiting ring 25 has a wavy design, and the outer wall of the base body 21 is provided with a first external thread 23 that screws onto the upper cover 3. The first external thread 23 is located above the limiting ring 25. The connection with the liquid packaging body is achieved through the setting of the connecting part 12, and the connecting part 12 has a flat ring structure with a large surface area, which increases the contact area between the fixing body 11 and the liquid packaging body and improves the connection firmness. The insert part 26 is the tapered part at the lower end of the base body 21, which makes it easy for the lower end of the base body 21 to be inserted into the fixing body 11, reducing the difficulty of connecting the two. The wavy structure design of the limiting ring 25 makes it easy for the user to grasp the base 2 and prevents the base 2 from rotating with the upper cover 3 when the upper cover 3 is rotated, which would cause the opening to fail. Similarly, the outer surface structure of the limiting ring 25 is not limited to a wave shape; it can also be other shapes, such as rectangles or regular polygons, as long as it is easy for the user to grip the base 2. The wave shape is more aesthetically pleasing and makes the edges of the limiting ring 25 softer, so as not to scratch the user or cause an unpleasant user experience. The first external thread 23 on the base body 21 is used to screw onto the upper cover 3, thereby connecting the base 2 and the upper cover 3.

[0047] like Figure 4 and Figure 7As shown, further, the upper cover 3 includes a cover body 31, which is a cylindrical structure with a sealed top and an open bottom. The side wall of the cover body 31 is provided with a second internal thread 32 that screws into the first external thread 23. The inner top wall of the cover body 31 is provided with a downwardly protruding sealing ring 34 along its circumference. A lever 33 is disposed on the inner top wall of the cover body 31, and the sealing ring 34 is disposed on the opposite outer side of the lever 33. The sealing ring 34 and the side wall of the cover body 31 are wrapped around the inner and outer sides of the upper end of the base body 21 to form a sealing structure. The cover body 31 is used to cover the upper end of the base 2 to achieve a seal between the base 2 and the upper cover 3, and the connection and seal between the base 2 and the upper cover 3 are achieved by tightening the second internal thread 32 into the first external thread 23 on the base body 21. The sealing ring 34 clamps the upper end of the base body 21 between the sealing ring 34 and the inner wall of the cover body 31, forming a sealing structure. This, combined with the sealing structures of the second internal thread 32 and the first external thread 23, and the base sealing membrane 5, forms a total of three sealing structures, further ensuring the sealing performance of the puncture cover structure. Simultaneously, the sealing structure between the sealing ring 34, the cover body 31, and the base body 21, along with the sealing structure between the second internal thread 32 and the first external thread 23, ensures that even after the base sealing membrane 5 is punctured, two sealing structures remain. This ensures that when the top cover 3 is screwed back onto the base 2 after the base sealing membrane 5 has been punctured, the sealing effect of the puncture cover structure is maintained. The sealing ring 34 is located on the outside of the lever 33, preventing damage to the seal between the sealing ring 34 and the base body 21.

[0048] like Figures 7-9 As shown, based on the above scheme, further, there is at least one pry block 33. The pry block 33 has an arc-shaped sheet structure that is wider at the top and narrower at the bottom. The inner wall of the piercing part body 41 is provided with a stop block 44 that cooperates with the pry block 33. The stop block 44 has a helical tooth structure and is inclined towards the pry block 33 it contacts. The side of the stop block 44 that does not contact the pry block 33 is an arc-shaped convex surface. Through the cooperative design of the pry block 33 and the stop block 44, when the upper cover 3 is rotated, the cover body 31 rotates upward relative to the base body 21, which drives the pry block 33 to rotate synchronously. The pry block 33 then pushes the stop block 44 to rotate synchronously, thereby driving the piercing part body 41 to rotate synchronously. The piercing part body 41 then rotates downward relative to the base body 21, thereby driving the thorn 42 to move downward and pierce the base sealing film 5. The opposite movement of the upper cover 3 and the piercing part 4 is achieved by the first external thread 23 and the first internal thread 24 being guided in opposite directions. Meanwhile, during the manufacturing process, the pry bar 33 is easy to insert into the side of the stop block 44, making it easier to fit the top cover 3 and the base 2.

[0049] The lever 33 features an arc-shaped, sheet-like structure, enhancing its structural strength and ensuring the movement of the stop block 44. The lever 33 has a wider top and narrower bottom design, causing the rotation speed of the piercing element 4 to decrease as the upper cover 3 rotates upwards, eventually separating from the piercing element 4 and preventing it from completely cutting the base sealing film 5. The stop block 44 has a serrated structure and tilts towards the lever 33 it contacts, allowing the lever 33 to be hooked by the stop block 44 as the upper cover 3 rotates, ensuring effective movement of both. The side of the stop block 44 not in contact with the lever 33 is an arc-shaped convex surface. When the upper cover 3 rotates downwards relative to the base 2, the lever 33 slides along the arc-shaped convex surface of the stop block 44, preventing it from rotating and thus preventing the piercing element 4 from rotating when the upper cover 3 is screwed on.

[0050] like Figure 7 As shown, the inner side of the lever 33 is further provided with at least one vertically arranged second reinforcing rib 35, and the outer wall of the cover body 31 is evenly distributed with several outwardly protruding anti-slip patterns 36 along its circumference. The provision of the second reinforcing rib 35 can improve the structural strength of the lever 33. The anti-slip patterns 36 are used to increase the friction between the outer wall of the cover body 31 and the user's hand, reducing the difficulty of rotating the top cover 3 to push the piercing member 4 to pierce the base sealing film 5.

[0051] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A puncture cap structure, comprising a fixing seat (1), a base (2), a top cover (3), and a puncture element (4), wherein the upper and lower ends of the base (2) are respectively connected to the top cover (3) and the fixing seat (1), a base sealing membrane (5) is provided inside the base (2), and the puncture element (4) is screwed to the base (2) and located above the base sealing membrane (5) and used to puncture the base sealing membrane (5), wherein the fixing seat (1) and the base (2) are both cylindrical structures with openings at both the upper and lower ends, characterized in that, The base (2) includes a base body (21). The lower end of the base body (21) is inserted into the fixed seat (1) and is fastened to the fixed seat (1) to form a seal. The upper end of the inner wall of the base body (21) is provided with a first internal thread (24). The piercing member (4) includes a piercing member body (41). The outer wall of the piercing member body (41) is provided with a second external thread (43) that is screwed to the first internal thread (24). The lower end of the piercing member body (41) is provided with a thorn (42) for piercing the base sealing film (5). The piercing member body (41) is a cylindrical structure with openings at both the upper and lower ends. The hollow cavity of the piercing member body (41) passes downward through the thorn (42) and is connected to the hollow cavity of the base body (21). The inner side of the upper cover (3) is provided with a lever (33) for driving the piercing member (4) to rotate.

2. The puncture cap structure according to claim 1, characterized in that, The number of the thorns (42) is multiple and extends downward along the lower circumferential edge of the puncture body (41). The multiple thorns (42) are located at local positions of the puncture body (41) and occupy a position smaller than half of the circumference of the puncture body (41).

3. The puncture cap structure according to claim 1, characterized in that, The number of the thorns (42) is one and is in the form of a hollow cone structure. The upper circumferential surface of the thorn (42) is connected to the lower circumferential surface of the puncture body (41). The side of the thorn (42) is provided with several liquid outlet holes (421) for connecting the hollow cavity of the puncture body (41) and the hollow cavity of the base body (21).

4. The puncture cap structure according to claim 1, characterized in that, The fixing seat (1) includes a cylindrical fixing seat body (11). The upper end of the inner wall of the fixing seat body (11) protrudes inward to form an inner buckle (13) that engages with the base body (21). The lower end of the outer wall of the base body (21) is provided with an outer buckle (22) that engages with the inner buckle (13). The outer buckle (22) and the fixing seat body (11) are press-fitted to form a sealing structure. The outer wall of the base body (21) is provided with a raised limiting ring (25) along its circumference. The lower side of the limiting ring (25) abuts against the upper end of the fixing seat body (11).

5. The puncture cap structure according to claim 4, characterized in that, The upper end of the fixed base body (11) is provided with an outwardly protruding flange (14), the flange (14) is a semi-circular arc structure, the outer wall of the base body (21) is provided with an outwardly protruding arc part (27) along its circumferential direction, the arc part (27) is located below the outer buckle (22), and the outer wall of the fixed base body (11) is provided with an outwardly protruding first reinforcing rib (15) along its circumferential direction and corresponding to the position of the arc part (27).

6. The puncture cap structure according to claim 4, characterized in that, The lower end of the fixed base body (11) is provided with a connecting part (12), the lower end of the base body (21) gradually shrinks inward to form a plug-in part (26), the outer side of the limiting ring (25) is designed with a wave-shaped line, the outer wall of the base body (21) is provided with a first external thread (23) that is screwed to the upper cover (3), and the first external thread (23) is located above the limiting ring (25).

7. The puncture cap structure according to claim 6, characterized in that, The upper cover (3) includes a cover body (31), which is a cylindrical structure with a top seal and a bottom opening. The side wall of the cover body (31) is provided with a second internal thread (32) that is screwed into the first external thread (23). The inner top wall of the cover body (31) is provided with a downward protruding sealing ring (34) along its circumference. The lever (33) is disposed on the inner top wall of the cover body (31), and the sealing ring (34) is disposed on the opposite outer side of the lever (33). The sealing ring (34) and the side wall of the cover body (31) are wrapped around the upper end of the base body (21) on both sides and form a sealing structure.

8. The puncture cap structure according to claim 7, characterized in that, There is at least one pry bar (33). The pry bar (33) has an arc-shaped sheet structure that is wider at the top and narrower at the bottom. The inner wall of the piercing body (41) is provided with a stop block (44) that cooperates with the pry bar (33). The stop block (44) has a serrated structure and is inclined toward the pry bar (33) that it contacts. The side of the stop block (44) that does not contact the pry bar (33) is an arc-shaped convex surface.

9. The puncture cap structure according to claim 7, characterized in that, The inner side of the push block (33) is provided with at least one second reinforcing rib (35) arranged vertically, and the outer wall of the cover body (31) is evenly arranged with several outward protruding anti-slip patterns (36) along its circumference.

Images