Screwing type aluminum bottle cap

Abstract

The utility model relates to a bottle cap, in particular to a screwing type aluminum bottle cap, which comprises a cap body, a sealing rubber body and a gland, external threads connected with a bottle body are arranged on the inner circumferential surface of the cap body, the sealing rubber body is sleeved inside the cap body, the sealing rubber body is provided with an inverted-cone-shaped cavity, the gland is in threaded connection with the cap body, and the gland is connected with the bottle body. One end of the gland extends into the inner cavity of the sealing rubber body and is connected with the side face of the cavity in an attached mode. According to the screwing type aluminum bottle cap, the sealing performance of the bottle cap can be guaranteed.

Description

Technical Field

[0001] The utility model relates to a bottle cap, in particular to a screw-type aluminum bottle cap. Background Art

[0002] Aluminum bottles are commonly used to hold pharmaceuticals and other chemicals, which are generally hazardous. Therefore, ensuring a tight seal around the bottle opening prevents the volatilization of hazardous materials inside. There are two types of sealing plugs available: one with an aluminum cap and a rubber stopper. When tightening, the rubber stopper is first inserted into the bottle opening before tightening the aluminum cap; the other with a rubber gasket attached to the aluminum cap. Both types of sealing plugs are susceptible to aging. If this aging is not promptly adjusted and detected, it can lead to leakage of hazardous materials within the bottle.

[0003] Based on this, it is necessary to improve the existing bottle cap. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the utility model provides a screw-type aluminum bottle cap for improving the sealing performance of the bottle body.

[0005] To achieve the above-mentioned purpose, the utility model of the present invention is a screw-type aluminum bottle cap, comprising:

[0006] A cover body, wherein the inner circumferential surface of the cover body is provided with an external thread connected to the bottle body;

[0007] A sealing rubber body, wherein the sealing rubber body is sleeved inside the cover body and has an inverted cone-shaped cavity;

[0008] The gland is screwed to the cover body, and one end of the gland extends into the inner cavity of the sealing rubber body and is fitted and connected to the side of the cavity.

[0009] Preferably, the sealing rubber body comprises a rotating ring, a supporting body and a sealing body, the rotating ring is arranged around the supporting body and is in close contact with the outer side surface of the supporting body, and the supporting body is arranged around the top of the sealing body.

[0010] Preferably, a snap ring is provided on the inner side surface of the cover body, and the snap ring and the upper top surface of the cover body form a cavity for accommodating the rotating ring.

[0011] Preferably, the bottom of the gland is provided with a protrusion for fitting with the side surface of the cavity.

[0012] Preferably, the rotating ring is made of metal, the sealing body is made of rubber, and the supporting body is made of resin.

[0013] The utility model has the following technical effects:

[0014] The bottle cap seals the bottle mouth together with the sealing rubber body and the pressure cap. Since the sealing rubber body has an inverted cone-shaped cavity, the sealing of the bottle mouth can be ensured by adjusting the screw-in depth of the pressure cap even when the sealing body ages and becomes thinner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the exterior of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the exterior of the utility model;

[0017] Figure 3 It is a cross-sectional view of the utility model;

[0018] Figure 4 This is a schematic structural diagram of the sealing rubber body of the present invention;

[0019] Figure 5 This is a structural cross-sectional view of the cover body of the present invention.

[0020] In the figure, 1. cover body; 2. sealing rubber body; 3. cavity; 4. pressure cover; 5. rotating ring; 6. support body; 7. sealing body; 8. snap ring; 9. chamber; 10. protrusion; 11. first screwing part; 12. second screwing part. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with embodiments; the examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] A screw-type aluminum bottle cap comprises a cap body 1, a sealing rubber body 2 and a pressing cap 4.

[0023] Refer to the attached Figure 5 A first screwing portion 11 and a second screwing portion 12 are provided along the axial direction of the cover body 1, and the first screwing portion 11 is provided below the second screwing portion 12. External threads are provided on the inner circumferential surface of the first screwing portion 11 and the inner circumferential surface of the second screwing portion 12. The external thread of the first screwing portion 11 is used to connect with the bottle body, and the external thread of the second screwing portion 12 is connected to the sealing rubber body 2. A snap ring 8 is provided between the first screwing portion 11 and the second screwing portion 12, and a cavity 9 is formed between the snap ring 8 and the upper top surface of the cover body 1. The cover body 1 is made of aluminum.

[0024] Refer to the attached Figure 4The sealing rubber body 2 is sleeved on the inside of the cover body 1. The sealing rubber body 2 includes a rotating ring 5, a support body 6 and a sealing body 7, wherein the support body 6 is a mesh structure and is made of resin; the sealing body 7 is made of rubber, and the sealing body 7 is fixed to the support body 6 through a vulcanization process; the rotating ring 5 is made of metal (generally alloy) to ensure wear resistance. The rotating ring 5 is arranged around the support body 6 and is fitted and connected to the outer side of the support body 6, and the support body 6 is arranged around the top of the sealing body 7. The rotating ring 5 is installed in the chamber 9. The outer side of the lower part of the sealing body 7 is cylindrical, and the sealing body 7 has a cavity 3 in the shape of an inverted cone.

[0025] The gland 4 is screwed to the cover 1, specifically, the top of the gland 4 is screwed to the second screwing portion 12 via a thread. The lower portion of the gland 4 extending into the cavity 3 of the sealing body 7 is provided with a protrusion 10 that fits the side of the cavity 3.

[0026] When using the bottle cap, the sealing body 7 is first extended into the bottle mouth, and then the cap body 1 is rotated. The cap body 1 continues to press the sealing body 7 into the bottle mouth during the downward rotation. Finally, the pressing cap 4 is screwed into the cavity 3 in the sealing rubber body 2. The sealing body 7 seals the bottle mouth under the action of the protrusion 10.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A screw-on aluminum bottle cap, characterized in that: include: A cover body (1), wherein the inner circumferential surface of the cover body (1) is provided with an external thread connected to the bottle body; A sealing rubber body (2), wherein the sealing rubber body (2) is sleeved inside the cover body (1), and the sealing rubber body (2) has an inverted cone-shaped cavity (3); A pressure cover (4) is screwed to the cover body (1), and one end of the pressure cover (4) extends into the inner cavity of the sealing rubber body (2) and is closely connected to the side of the cavity (3).

2. The screw-on aluminum bottle cap according to claim 1, characterized in that: The sealing rubber body (2) comprises a rotating ring (5), a supporting body (6) and a sealing body (7); the rotating ring (5) is arranged around the supporting body (6) and is in close contact with the outer side surface of the supporting body (6); and the supporting body (6) is arranged around the top of the sealing body (7).

3. The screw-on aluminum bottle cap according to claim 2, characterized in that: A snap ring (8) is provided on the inner side surface of the cover body (1), and the snap ring (8) and the upper top surface of the cover body (1) form a chamber (9) for accommodating the rotating ring (5).

4. The screw-on aluminum bottle cap according to claim 3, characterized in that: The bottom of the pressure cover (4) is provided with a protrusion (10) for fitting with the side surface of the cavity (3).

5. The screw-on aluminum bottle cap according to claim 4, characterized in that: The rotating ring (5) is made of metal, the sealing body (7) is made of rubber, and the supporting body (6) is made of resin.

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