A bottle cap with a built-in cavity

Abstract

The utility model relates to a bottle lid with built-in cavity, including movable lid and storage lid, be equipped with the puncture mechanism of storage cylinder bottom sealing membrane in upper cover body lower part, set up axial limit structure and axial drive structure between storage cylinder upper part and upper cover body middle part, the utility model adds axial limit structure and can prevent the rupture of storage cavity bottom sealing membrane caused by accidental touch puncture mechanism, when puncturing the sealing membrane, only need to tear the easy tear strip of storage lid upper end and rotate movable lid, and the puncture mechanism can cut open the sealing membrane of storage cylinder bottom under the cooperation of axial drive structure, have reasonable in structure, convenient operation's characteristics.

Description

Technical Field

[0001] This utility model relates to a bottle cap, specifically a bottle cap with an internal cavity. Background Technology

[0002] For example, utility model CN110002097A discloses a ready-to-use bottle cap and a bottle using the same cap. The ready-to-use bottle cap includes: a lower cap comprising a cap body and a storage cylinder with an opening at the top connected to the cap body; and an upper cap comprising a press-fit cap and a top post connected to the press-fit cap. The press-fit cap is connected to the opening of the storage cylinder, forming a storage cavity. The top post is housed within the storage cavity and faces the bottom of the storage cylinder. The bottle includes the ready-to-use bottle cap and a bottle body. The bottle body has external threads corresponding to the internal threads at the bottle mouth. The ready-to-use bottle cap and bottle body are connected via the internal and external threads. This invention adopts a novel design concept: the upper and lower caps are connected to form a storage cavity. The connection point is located on the upper surface of the lower cap, providing ample processing space to ensure a tight connection between the upper and lower caps. Furthermore, the lower cap is integrally molded, allowing for good isolation between the solute and solvent, reducing product defect rates due to seal failure.

[0003] The above structure has a problem where the top column can easily break the storage chamber when the pressing cover is accidentally pressed, because the pressing cover and the top column do not have a locking mechanism. Utility Model Content

[0004] The purpose of this invention is to provide a bottle cap with a built-in cavity, which includes a movable cap and a storage cap. A puncture mechanism for the sealing film at the bottom of the storage cylinder is provided at the lower part of the upper cap. An axial limiting structure and an axial driving structure are provided between the upper part of the storage cylinder and the middle part of the upper cap. The addition of the axial limiting structure can prevent the sealing film at the bottom of the storage cavity from breaking due to the puncture mechanism. To puncture the sealing film, simply tear off the easy-tear strip at the top of the storage cap and rotate the movable cap. With the cooperation of the axial driving structure, the puncture mechanism can cut open the sealing film at the bottom of the storage cylinder. The cut of the sealing film is large and no residue remains in the storage cylinder. It has the characteristics of reasonable structure and convenient operation.

[0005] To achieve the above objectives, the following technical solution is adopted: A bottle cap with a built-in cavity is characterized in that it includes a movable cap and a storage cap. The storage cap includes a tubular cap body with a storage cylinder inside the cap body that is open at the top and closed at the bottom. The upper port of the storage cylinder extends radially outward to the middle of the inner wall of the cap body and is integrated with the inner wall of the cap body. The radial extension of the storage cylinder forms an annular step in the middle of the inner wall of the cap body. The movable cap includes an upper cap body, a piston body, and a puncturing mechanism. The piston body cooperates with the inner wall of the storage cylinder. The upper cap body is located above the piston body. An axial limiting structure is provided between the upper cap body and the upper side wall of the cap body. The puncturing mechanism is located at the bottom of the piston body and extends downward to a position close to the bottom of the storage cylinder.

[0006] The axial limiting structure includes an easy-tear ring at the upper end of the cover, the upper part of the upper cover abutting against the easy-tear ring at the upper port of the cover, and the lower part of the upper cover being accommodated in the upper cavity of the cover.

[0007] The upper cover includes an upper cover and a tubular body. The upper cover closes the upper end of the tubular body, and the lower end of the tubular body is connected to the piston body. The piston body is a tubular body with its upper and lower ends connected. The tubular body is housed in the upper part of the cover, and the lower edge of the upper cover abuts against the upper end of the cover.

[0008] An axial driving structure is also provided between the tubular body and the side wall of the cover. The axial driving structure includes a driving guide groove opened on the upper side wall of the cover and a protruding post set on the outer side wall of the tubular body. The protruding post passes through the driving guide groove, and the axial movement of the tubular body is achieved by rotating the protruding post along the driving guide groove.

[0009] An axial groove is provided on the inner wall of the cover from the upper port to the upper end of the drive guide groove.

[0010] The tubular outer wall is provided with a limiting ring-shaped retaining rib near the upper end, and an anti-rotation retaining tooth is provided above the limiting ring-shaped retaining rib. The inner wall of the upper cover is also provided with a limiting ring-shaped retaining rib and an anti-rotation retaining tooth at the corresponding position.

[0011] The aforementioned An annular groove is formed between the outer wall of the storage cylinder and the inner wall of the cover, and the inner wall of the cover is provided with internal threads.

[0012] The bottom of the puncture mechanism is provided with annular cutting teeth, and the bottom surface of the storage cylinder is provided with annular grooves. The position and size of the annular grooves match the position and size of the annular cutting teeth.

[0013] This invention adds an axial limiting structure and an axial driving structure between the storage cover and the movable cover. The axial limiting structure can prevent accidental activation of the puncture mechanism, which would cause the sealing film at the bottom of the storage cavity to break. To puncture the sealing film, simply tear off the easy-tear strip at the top of the storage cover and rotate the movable cover. With the cooperation of the axial driving structure, the puncture mechanism can cut open the sealing film at the bottom of the storage cylinder. This invention uses annular cutting teeth, which result in a larger cut in the sealing film, faster material leakage from the storage cylinder, and no residue. It features a reasonable structure and convenient operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model in conjunction with the bottle body; Figure 2 This is a side view of the present invention in conjunction with the bottle body; Figure 3 This utility model Figure 2 Sectional view along line AA; Figure 4This is an exploded view (I) of the present invention; Figure 5 This is an exploded view (II) of the present invention. Figure 6 This is an exploded view (III) of the present invention; Figure 7 This utility model Figure 6 Sectional view along the BB direction. Detailed Implementation

[0015] like Figure 1-7 As shown, a bottle cap with a built-in cavity includes a movable cap 2 and a storage cap 1. The storage cap includes a tubular cap body 11, and a storage cylinder 12 with an open top and closed bottom inside the cap body 11. The upper end of the storage cylinder 12 extends radially outward to the middle of the inner wall of the cap body 11 and is integrated with the inner wall of the cap body. The radially extended portion of the storage cylinder 12 forms an annular step portion 13 in the middle of the inner wall of the cap body. An annular groove 17 is formed between the outer wall of the storage cylinder 12 and the inner wall of the cap body 11. The side wall of the annular groove 17 is provided with an internal thread that mates with the bottle body 5. The movable cap 2 includes an upper cap body, a piston body 21, and a puncturing mechanism 3. The upper cover includes an upper cover 23 and a tubular body 22. The upper cover 23 closes the upper port of the tubular body 22. The piston body 21 is a tubular body with its upper and lower ports connected. The piston body 21 fits with the inner wall of the storage cylinder 12. The upper cover is located above the piston body 21. An axial limiting structure is provided between the upper cover and the upper side wall of the cover body 11. The puncturing mechanism 3 is located at the bottom of the piston body 21 and extends downward to a position close to the bottom of the storage cylinder. The bottom of the puncturing mechanism 3 is provided with an annular cutting tooth 31. An annular groove 121 is opened on the bottom surface of the storage cylinder 12. The position and size of the annular groove 121 match the position and size of the annular cutting tooth 31.

[0016] The outer wall of the tubular body 22 is provided with a limiting ring rib 221 near the upper end, and an anti-rotation tooth 222 is provided above the limiting ring rib 221. The inner wall of the upper cover 23 is also provided with a limiting ring rib 221 and an anti-rotation tooth 222 at the corresponding positions.

[0017] The lower end of the tubular body 22 is connected to the piston body 21. The tubular body 22 is housed in the upper part of the cover body 11, and the lower edge of the upper cover 23 abuts against the tear-off ring 14 at the upper port of the cover body 11. An axial drive structure is also provided between the tubular body 22 and the side wall of the cover body 11. The axial drive structure includes a drive guide groove 15 opened in the upper side wall of the cover body 11 and a protrusion 24 provided on the outer side wall of the tubular body 22. The protrusion 24 passes through the drive guide groove 15. When the tubular body 22 is rotated, the protrusion 24 moves along the drive guide groove 15 to realize the axial movement of the tubular body 22. An axial sliding groove 16 is opened in the inner wall of the cover body 11 from the upper port to the upper end of the drive guide groove 15. The axial sliding groove 16 facilitates the smooth entry of the protrusion 24 of the tubular body 22 into the drive guide groove 15.

[0018] The cap 11 of this utility model is screwed onto the bottle mouth of the bottle body 5 through the internal thread on the side wall of the groove 17. The storage cylinder 12 extends into the bottle body 5. The piston body 21 is sealed with the inner wall of the storage cylinder 12 to store the material into the storage cylinder 12. The material is put into the storage cylinder 12 from the upper port of the tubular body 22. Then the upper cap 23 is put on to seal the storage cylinder 12.

[0019] This invention adds an axial limiting structure and an axial driving structure between the storage cover and the movable cover. The axial limiting structure can prevent accidental activation of the puncture mechanism, which would cause the sealing film at the bottom of the storage cavity to break. To puncture the sealing film, simply tear off the easy-tear strip at the top of the storage cover and rotate the movable cover. With the cooperation of the axial driving structure, the puncture mechanism can cut open the sealing film at the bottom of the storage cylinder. This invention uses annular cutting teeth, which result in a larger cut in the sealing film, faster material leakage from the storage cylinder, and no residue. It features a reasonable structure and convenient operation.

Claims

1. A bottle cap with a built-in cavity, characterized in that: The device includes a movable cover (2) and a storage cover (1). The storage cover includes a tubular cover body (11). Inside the cover body (11) is a storage cylinder (12) with an open top and closed bottom. The upper port of the storage cylinder (12) extends radially outward to the middle of the inner wall of the cover body (11) and is integrated with the inner wall of the cover body. The radial extension of the storage cylinder (12) forms an annular step (13) in the middle of the inner wall of the cover body. The movable cover (2) includes an upper cover body, a piston body (21) and a puncturing mechanism (3). The piston body (21) cooperates with the inner wall of the storage cylinder (12). The upper cover body is above the piston body (21). An axial limiting structure is provided between the upper cover body and the upper side wall of the cover body (11). The puncturing mechanism (3) is located at the bottom of the piston body (21) and extends downward to a position close to the bottom of the storage cylinder.

2. The bottle cap with a built-in cavity as described in claim 1, characterized in that: The axial limiting structure includes an easy-tear ring (14) at the upper end of the cover (11), the upper part of the upper cover abuts against the easy-tear ring (14) at the upper port of the cover (11), and the lower part of the upper cover is housed in the upper cavity of the cover (11).

3. A bottle cap with a built-in cavity as described in claim 2, characterized in that: The upper cover includes an upper cover (23) and a tubular body (22). The upper cover (23) closes the upper port of the tubular body (22). The lower end of the tubular body (22) is connected to the piston body (21). The piston body (21) is a tubular body with its upper and lower ports connected. The tubular body (22) is housed in the upper part of the cover (11). The lower edge of the upper cover (23) abuts against the tear ring (14) at the upper port of the cover (11).

4. A bottle cap with a built-in cavity as described in claim 3, characterized in that: An axial drive structure is provided between the tubular body (22) and the side wall of the cover (11). The axial drive structure includes a drive guide groove (15) opened on the upper side wall of the cover (11) and a protrusion (24) provided on the outer side wall of the tubular body (22). The protrusion (24) passes through the drive guide groove (15). When the tubular body (22) is rotated, the protrusion (24) moves along the drive guide groove (15) to realize the axial movement of the tubular body (22).

5. A bottle cap with a built-in cavity as described in claim 4, characterized in that: An axial groove (16) is provided on the inner wall of the cover (11) from the upper port to the upper end of the drive guide groove (15).

6. A bottle cap with a built-in cavity as described in claim 3, characterized in that: The outer wall of the tubular body (22) is provided with a limiting ring-shaped retaining rib (221) near the upper end, and an anti-rotation retaining tooth (222) is provided above the limiting ring-shaped retaining rib (221). The inner wall of the upper cover (23) is also provided with a limiting ring-shaped retaining rib (221) and an anti-rotation retaining tooth (222) at the corresponding positions.

7. A bottle cap with a built-in cavity as described in claim 1, characterized in that: An annular groove (17) is formed between the outer wall of the storage cylinder (12) and the inner wall of the cap (11), and the side wall of the annular groove (17) is provided with an internal thread that matches the bottle body (5).

8. A bottle cap with a built-in cavity as described in claim 1, characterized in that: The bottom of the puncture mechanism (3) is provided with annular cutting teeth (31), and the bottom surface of the storage cylinder (12) is provided with annular grooves (121). The position and size of the annular grooves (121) match the position and size of the annular cutting teeth (31).

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