A sealing structure for bottle body and bottle cap

Abstract

In order to solve the problem that the traditional sealing ring is a sealing ring with a rectangular cross section, which is mainly in contact with the top surface of the bottle body for sealing, and the sealing ring is easy to deform and fall off, the present invention proposes a sealing structure for the bottle body and the bottle cap. The present invention designs a sealing ring with a circular cross section on the basis of the existing interference fit sealing, which is in contact with and fits with the upper end of the inner wall of the bottle mouth structure of the bottle body for sealing, which not only solves the problem of poor interference fit sealing effect, but also solves the problem of square sealing rings being easy to fall off, and also solves the problem of square sealing rings being easy to twist and deform, and can also be well sealed when the roundness of the bottle mouth is relatively poor.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more specifically, to a sealing structure of a bottle body and a bottle cap. Background Art

[0002] There are two existing methods for sealing bottle bodies and bottle caps on the market. One is that when the bottle cap is made of soft material, such as LDPE, HDPE, the bottle cap and the bottle body can be made into interference fit to achieve a sealing effect; the other is that when the bottle cap is made of relatively hard material, such as stainless steel, iron material, or PP, the bottle cap itself has no elasticity, and when the interference fit is made, the bottle cap and the bottle body cannot fit together, which requires the introduction of a sealing ring 2. However, the traditional sealing ring is a sealing ring with a rectangular cross-section, which is mainly sealed with the top surface of the bottle body, and the seal is easy to deform and fall off.

[0003] The first interference sealing solution has poor sealing effect, especially when the roundness of the bottle body is poor, the sealing effect will be worse; when the second sealing ring with a rectangular cross section is used for sealing, the sealing ring fixing effect is poor, such as Figure 1 and Figure 2 As shown, the sealing ring can easily fall off the bottle cap. In addition, Figure 3 and Figure 4 As shown, the sealing ring itself is easily twisted and deformed due to the squeezing of the opening end of the bottle body. Summary of the invention

[0004] In view of this, in order to solve the problem that the traditional sealing ring is a sealing ring with a rectangular cross-section, which is mainly in contact and seal with the top surface of the bottle body, and the sealing ring is easy to deform and fall off, the present invention proposes a sealing structure of the bottle body and the bottle cap. The present invention is based on the existing interference fit sealing and designs a sealing ring with a circular cross-section, which is in contact and fit with the upper end of the inner wall of the bottle mouth structure of the bottle body for sealing. It not only solves the problem of poor interference fit sealing effect, but also solves the problem of square sealing rings that are easy to fall off, and also solves the problem of square sealing rings that are easy to twist and deform. In addition, it can also seal well when the roundness of the bottle mouth is relatively poor.

[0005] A sealing structure for a bottle body and a bottle cap, comprising: a bottle cap 1, a sealing ring 2 and a bottle body 4, the bottle cap 1 comprising: an upper cover body 11 and an anti-falling structure 12, the bottle cap 1 being threadedly connected to the bottle body 4; characterized in that: the anti-falling structure 12 is arranged inside the upper cover body 11, an accommodating chamber 14 is formed between the inner side wall of the upper cover body 11 and the outer side wall of the anti-falling structure 12, the sealing ring 2 is located at the connection between the outer wall of the anti-falling structure 12 and the upper inner wall of the upper cover body 11 and is placed in the accommodating chamber 14, the cross section of the sealing ring 2 is circular, a bottle mouth structure 41 is arranged on the upper part of the bottle body 4, the bottle mouth structure 41 is located in the accommodating chamber 14 and the inner wall of the bottle mouth structure 41 is close to the outer edge of the sealing ring 2, and the upper cover body 11 can completely cover the bottle mouth structure 41.

[0006] Furthermore, the inner diameter of the sealing ring 2 is 0 to 0.5 mm smaller than the diameter of the circle formed by the outer wall of the anti-falling structure 12, so that the sealing ring 2 will not fall off after being sleeved on the anti-falling structure 12. If the inner diameter of the sealing ring 2 is larger than the diameter of the circle formed by the outer wall of the anti-falling structure 12, it is easy to fall off. If the inner diameter of the sealing ring 2 is too smaller than the diameter of the circle formed by the outer wall of the anti-falling structure 12, it is difficult to assemble the sealing ring 2 and the anti-falling structure 12.

[0007] Furthermore, the outer diameter of the sealing ring 2 is 0.3-1.0 mm larger than the inner wall diameter of the bottle mouth structure 41, so as to ensure that a good sealing effect can be achieved even when the roundness of the bottle body 4 structure is relatively poor.

[0008] Furthermore, an integrally formed undercut structure 13 is provided at the lower portion of the outer wall of the anti-falling structure 12, and the undercut amount ranges from 0.1 to 0.8 mm, ensuring that the sealing ring 2 is well assembled to the connection between the upper portion of the outer wall of the anti-falling structure 12 and the upper cover body 11 and will not fall off.

[0009] Furthermore, an outer wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with an outer bottle body R angle 43, and an inner wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with an inner bottle body R angle 44. The diameters of the outer bottle body R angle 43 and the inner bottle body R angle 44 are both in the range of 0.2 to 1.0 mm. The outer bottle body R angle 43 ensures that the bottle mouth structure 41 will not generate friction when in contact with the inner wall of the upper cover body 11, thereby scratching the surface of the upper cover body 11 or the bottle mouth structure 41. The inner bottle body R angle 44 ensures that the bottle mouth structure 41 will not crush the sealing ring 2 during sealing, and at the same time can increase the interference amount of the seal, so as to achieve a better sealing effect. The R angle design cannot be too large, otherwise the sealing effect will be poor. The design of the outer bottle body R angle 43 and the inner bottle body R angle 44 can also prevent the bottle body 4 from cracking due to excessive stress during production, resulting in gaps and other adverse conditions.

[0010] Furthermore, the gap value between the outer wall of the anti-falling structure 12 and the inner wall of the bottle mouth structure 41 is A, the roundness formed by the outer wall of the bottle mouth structure 41 is B, the diameter of the sealing ring 2 is C, and the diameter of the sealing ring 2 is the diameter of the circular cross-section of the sealing ring 2. When C≥A+B is satisfied, when the roundness of the bottle mouth structure 41 of the bottle body 4 is relatively poor, the sealing ring 2 can still play a better sealing role due to its own elasticity, and the sealing effect can also be achieved.

[0011] Furthermore, the sealing ring 2 is made of a soft elastic material, such as solid silicone, liquid silicone, or soft plastic.

[0012] Furthermore, a tear C-ring 5 is provided on the lower end surface of the side wall of the upper cover body 11. When the bottle cap 1 and the bottle body 4 are assembled, the tear C-ring 5 is located on the outer side surface of the lower part of the bottle mouth structure 41 and the lower end of the tear C-ring 5 is in contact with the connection between the bottle mouth structure 41 and the bottle body 4.

[0013] Furthermore, an upper cover thread 15 is provided on the inner wall of the upper cover body 11, and a bottle mouth thread 42 is provided on the outer wall of the bottle mouth structure 41. When the bottle cap 1 is screwed, the upper cover thread 15 cooperates with the bottle mouth thread 42, so that the bottle cap 1 can only move upward or downward along the axis of the bottle body 4.

[0014] Furthermore, a desiccant positioning device 3 is provided inside the upper cover body 11. The desiccant positioning device 3 is located inside the inner wall of the anti-falling structure 12 and is integrally formed with the upper cover body 11. The desiccant positioning device 3 is matched with the desiccant. The desiccant can be directly connected to the desiccant positioning device 3, and directly contact the water vapor in the bottle body 4, so as to achieve a better moisture absorption and drying effect.

[0015] Beneficial effects of the invention: The invention designs a sealing ring 2 with a circular cross-section on the basis of the existing interference fit sealing, which contacts and fits with the upper end of the inner wall of the bottle mouth structure 41 of the bottle body 4 for sealing, thereby solving the problem of poor interference fit sealing effect, and solving the problem that the square sealing ring 2 is easy to fall off, and also solving the problem that the square sealing ring 2 is easy to twist and deform, and can also achieve good sealing when the roundness of the mouth of the bottle body 4 is relatively poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the traditional sealing effect structure of the sealing structure between the bottle body and the bottle cap of the present invention.

[0017] Figure 2 It is a schematic diagram of the traditional sealing peeling effect structure of the sealing structure between the bottle body and the bottle cap of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the traditional sealing deformation effect of the sealing structure of the bottle body and the bottle cap of the present invention.

[0019] Figure 4 It is a schematic structural diagram of the traditional sealing deformation effect of the sealing structure of the bottle body and the bottle cap of the present invention.

[0020] Figure 5 It is a schematic diagram of the overall structure of the sealing structure of the bottle body and the bottle cap of the present invention.

[0021] Figure 6 It is a schematic diagram of the separate structure of the sealing structure of the bottle body and the bottle cap of the present invention.

[0022] Figure 7 It is a schematic diagram of the overall structure of the connection between the bottle body and the bottle cap of the present invention.

[0023] Figure 8 It is a detailed structural schematic diagram of the sealing structure of the bottle body and the bottle cap of the present invention.

[0024] Main component symbols

[0025]

[0026]

[0027] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION Specific embodiment 1:

[0029] like Figure 5 As shown, it is a schematic diagram of the overall structure of the sealing structure of the bottle body and the bottle cap of the present invention. Figure 6 As shown, it is a schematic diagram of the separate structure of the sealing structure of the bottle body and the bottle cap of the present invention; Figure 7 FIG. 1 is a schematic diagram of the overall structure of the connection between the bottle body and the bottle cap of the present invention; Figure 8 , which is a schematic diagram of the detailed structure of the sealing structure of the bottle body and the bottle cap of the present invention.

[0030] A sealing structure of a bottle body and a bottle cap, comprising: a bottle cap 1, a sealing ring 2 and a bottle body 4, the bottle cap 1 comprising: an upper cover body 11 and an anti-falling structure 12, the bottle cap 1 is threadedly connected to the bottle body 4; it is characterized in that: the anti-falling structure 12 is arranged inside the upper cover body 11, and a containing chamber 14 is formed between the inner side wall of the upper cover body 11 and the outer side wall of the anti-falling structure 12, the sealing ring 2 is located at the connection between the outer wall of the anti-falling structure 12 and the upper inner wall of the upper cover body 11 and is placed in the containing chamber 14, the cross section of the sealing ring 2 is circular, a bottle mouth structure 41 is arranged on the upper part of the bottle body 4, the bottle mouth structure 41 is located in the containing chamber 14 and the inner wall of the bottle mouth structure 41 is close to the outer edge of the sealing ring 2, and the upper cover body 11 can completely cover the bottle mouth structure 41; the sealing ring 2 is made of soft elastic material; the inner diameter of the sealing ring 2 is 0 to 0.5 mm smaller than the diameter of the circle formed by the outer wall of the anti-falling structure 12; the sealing ring 2 The outer diameter is 0.3-1.0 mm larger than the inner wall diameter of the bottle mouth structure 41; an integrally formed undercut structure 13 is provided at the lower part of the outer wall of the anti-falling structure 12, and the undercut amount ranges from 0.1 to 0.8 mm; the outer wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with an outer bottle body R angle 43, and the inner wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with an inner bottle body R angle 44, and the diameters of the outer bottle body R angle 43 and the inner bottle body R angle 44 are both in the range of 0.2-1.0 mm; the gap value between the outer wall of the anti-falling structure 12 and the inner wall of the bottle mouth structure 41 is A, the roundness formed by the outer wall of the bottle mouth structure 41 is B, the diameter of the sealing ring 2 is C, and the diameter of the sealing ring 2 is the diameter of the circular cross-section of the sealing ring 2. When C≥A+B is satisfied, when the roundness of the bottle mouth structure 41 of the bottle body 4 is relatively poor, the sealing ring 2 can also play a relatively good sealing role due to its own elastic effect, and the sealing effect can also be achieved.

[0031] A tear C ring 5 is provided on the lower end face of the side wall of the upper cover body 11. When the bottle cap 1 and the bottle body 4 are assembled, the tear C ring 5 is located on the outer side face of the lower part of the bottle mouth structure 41 and the lower end of the tear C ring 5 is in contact with the connection between the bottle mouth structure 41 and the bottle body 4.

[0032] The inner wall of the upper cover body 11 is provided with an upper cover thread 15, and the outer wall of the bottle mouth structure 41 is provided with a bottle mouth thread 42. When the bottle cap 1 is twisted, the upper cover thread 15 cooperates with the bottle mouth thread 42, so that the bottle cap 1 can only move upward or downward along the axis of the bottle body 4.

[0033] A desiccant positioning device 3 is also provided inside the upper cover body 11 . The desiccant positioning device 3 is located inside the inner wall of the anti-falling structure 12 and is integrally formed with the upper cover body 11 . The desiccant positioning device 3 is matched with the desiccant, and the desiccant can be directly snapped into the desiccant positioning device 3 . Specific embodiment 2:

[0035] like Figure 5As shown, it is a schematic diagram of the overall structure of the sealing structure of the bottle body and the bottle cap of the present invention. Figure 6 As shown, it is a schematic diagram of the separate structure of the sealing structure of the bottle body and the bottle cap of the present invention; Figure 7 FIG. 1 is a schematic diagram of the overall structure of the connection between the bottle body and the bottle cap of the present invention; Figure 8 , which is a schematic diagram of the detailed structure of the sealing structure of the bottle body and the bottle cap of the present invention.

[0036] A sealing structure of a bottle body and a bottle cap, comprising: a bottle cap 1, a sealing ring 2 and a bottle body 4, the bottle cap 1 comprising: an upper cover body 11 and an anti-falling structure 12, the bottle cap 1 being threadedly connected to the bottle body 4; characterized in that: the anti-falling structure 12 is arranged inside the upper cover body 11, a containing chamber 14 is formed between the inner side wall of the upper cover body 11 and the outer side wall of the anti-falling structure 12, the sealing ring 2 is located at the connection between the outer wall of the anti-falling structure 12 and the upper inner wall of the upper cover body 11 and is placed in the containing chamber 14, the cross section of the sealing ring 2 is circular, a bottle mouth structure 41 is arranged on the upper part of the bottle body 4, the bottle mouth structure 41 is located in the containing chamber 14 and the inner wall of the bottle mouth structure 41 is close to the outer edge of the sealing ring 2, and the upper cover body 11 can completely cover the bottle mouth structure 41; the sealing ring 2 is made of solid silica gel; the inner diameter of the sealing ring 2 is 0 to 0.5 mm smaller than the diameter of the circle formed by the outer wall of the anti-falling structure 12; the outer The side diameter is 0.3-1.0mm larger than the diameter of the inner wall of the bottle mouth structure 41; the lower part of the outer wall of the anti-falling structure 12 is provided with an integrally formed undercut structure 13, and the undercut amount ranges from 0.1 to 0.8mm; the outer wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with a bottle body outer R angle 43, and the inner wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with a bottle body inner R angle 44, and the diameters of the bottle body outer R angle 43 and the bottle body inner R angle 44 are both in the range of 0.2-1.0mm; the gap value between the outer wall of the anti-falling structure 12 and the inner wall of the bottle mouth structure 41 is A, the roundness formed by the outer wall of the bottle mouth structure 41 is B, the diameter of the sealing ring 2 is C, and the diameter of the sealing ring 2 is the diameter of the circular cross-section of the sealing ring 2. When C≥A+B is satisfied, when the roundness of the bottle mouth structure 41 of the bottle body 4 is relatively poor, the sealing ring 2 can also play a better sealing role due to its own elasticity, and the sealing effect can also be achieved.

[0037] A tear C ring 5 is provided on the lower end face of the side wall of the upper cover body 11. When the bottle cap 1 and the bottle body 4 are assembled, the tear C ring 5 is located on the outer side face of the lower part of the bottle mouth structure 41 and the lower end of the tear C ring 5 is in contact with the connection between the bottle mouth structure 41 and the bottle body 4.

[0038] The inner wall of the upper cover body 11 is provided with an upper cover thread 15, and the outer wall of the bottle mouth structure 41 is provided with a bottle mouth thread 42. When the bottle cap 1 is twisted, the upper cover thread 15 cooperates with the bottle mouth thread 42, so that the bottle cap 1 can only move upward or downward along the axis of the bottle body 4.

[0039] A desiccant positioning device 3 is also provided inside the upper cover body 11 . The desiccant positioning device 3 is located inside the inner wall of the anti-falling structure 12 and is integrally formed with the upper cover body 11 . The desiccant positioning device 3 is matched with the desiccant, and the desiccant can be directly snapped into the desiccant positioning device 3 . Specific embodiment 3:

[0041] like Figure 5 As shown, it is a schematic diagram of the overall structure of the sealing structure of the bottle body and the bottle cap of the present invention. Figure 6 As shown, it is a schematic diagram of the separate structure of the sealing structure of the bottle body and the bottle cap of the present invention; Figure 7 FIG. 1 is a schematic diagram of the overall structure of the connection between the bottle body and the bottle cap of the present invention; Figure 8 , which is a schematic diagram of the detailed structure of the sealing structure of the bottle body and the bottle cap of the present invention.

[0042] A sealing structure of a bottle body and a bottle cap, comprising: a bottle cap 1, a sealing ring 2 and a bottle body 4, the bottle cap 1 comprising: an upper cover body 11 and an anti-falling structure 12, the bottle cap 1 being threadedly connected to the bottle body 4; characterized in that: the anti-falling structure 12 is arranged inside the upper cover body 11, a containing chamber 14 is formed between the inner side wall of the upper cover body 11 and the outer side wall of the anti-falling structure 12, the sealing ring 2 is located at the connection between the outer wall of the anti-falling structure 12 and the upper inner wall of the upper cover body 11 and is placed in the containing chamber 14, the cross section of the sealing ring 2 is circular, a bottle mouth structure 41 is arranged on the upper part of the bottle body 4, the bottle mouth structure 41 is located in the containing chamber 14 and the inner wall of the bottle mouth structure 41 is close to the outer edge of the sealing ring 2, and the upper cover body 11 can completely cover the bottle mouth structure 41; the sealing ring 2 is made of liquid silicone; the inner diameter of the sealing ring 2 is 0 to 0.5 mm smaller than the diameter of the circle formed by the outer wall of the anti-falling structure 12; the outer The side diameter is 0.3-1.0mm larger than the diameter of the inner wall of the bottle mouth structure 41; the lower part of the outer wall of the anti-falling structure 12 is provided with an integrally formed undercut structure 13, and the undercut amount ranges from 0.1 to 0.8mm; the outer wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with a bottle body outer R angle 43, and the inner wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with a bottle body inner R angle 44, and the diameters of the bottle body outer R angle 43 and the bottle body inner R angle 44 are both in the range of 0.2-1.0mm; the gap value between the outer wall of the anti-falling structure 12 and the inner wall of the bottle mouth structure 41 is A, the roundness formed by the outer wall of the bottle mouth structure 41 is B, the diameter of the sealing ring 2 is C, and the diameter of the sealing ring 2 is the diameter of the circular cross-section of the sealing ring 2. When C≥A+B is satisfied, when the roundness of the bottle mouth structure 41 of the bottle body 4 is relatively poor, the sealing ring 2 can also play a better sealing role due to its own elasticity, and the sealing effect can also be achieved.

[0043] A tear C ring 5 is provided on the lower end face of the side wall of the upper cover body 11. When the bottle cap 1 and the bottle body 4 are assembled, the tear C ring 5 is located on the outer side face of the lower part of the bottle mouth structure 41 and the lower end of the tear C ring 5 is in contact with the connection between the bottle mouth structure 41 and the bottle body 4.

[0044] The inner wall of the upper cover body 11 is provided with an upper cover thread 15, and the outer wall of the bottle mouth structure 41 is provided with a bottle mouth thread 42. When the bottle cap 1 is twisted, the upper cover thread 15 cooperates with the bottle mouth thread 42, so that the bottle cap 1 can only move upward or downward along the axis of the bottle body 4.

[0045] A desiccant positioning device 3 is also provided inside the upper cover body 11 . The desiccant positioning device 3 is located inside the inner wall of the anti-falling structure 12 and is integrally formed with the upper cover body 11 . The desiccant positioning device 3 is matched with the desiccant, and the desiccant can be directly snapped into the desiccant positioning device 3 . Specific embodiment 4:

[0047] like Figure 5 As shown, it is a schematic diagram of the overall structure of the sealing structure of the bottle body and the bottle cap of the present invention. Figure 6 As shown, it is a schematic diagram of the separate structure of the sealing structure of the bottle body and the bottle cap of the present invention; Figure 7 FIG. 1 is a schematic diagram of the overall structure of the connection between the bottle body and the bottle cap of the present invention; Figure 8 , which is a schematic diagram of the detailed structure of the sealing structure of the bottle body and the bottle cap of the present invention.

[0048] A sealing structure for a bottle body and a bottle cap, comprising: a bottle cap 1, a sealing ring 2 and a bottle body 4, wherein the bottle cap 1 comprises: an upper cover body 11 and an anti-falling structure 12, wherein the bottle cap 1 is threadedly connected to the bottle body 4; the characteristic is that: the anti-falling structure 12 is arranged inside the upper cover body 11, an accommodating chamber 14 is formed between the inner side wall of the upper cover body 11 and the outer side wall of the anti-falling structure 12, and the sealing ring 2 is located between the outer wall of the anti-falling structure 12 and the upper inner wall of the upper cover body 11 The bottle body 4 is provided with a bottle mouth structure 41 on the upper part, the bottle mouth structure 41 is located in the accommodating chamber 14 and the inner wall of the bottle mouth structure 41 is close to the outer edge of the sealing ring 2, and the upper cover body 11 can completely cover the bottle mouth structure 41; the sealing ring 2 is made of soft plastic; the inner diameter of the sealing ring 2 is 0 to 0.5 mm smaller than the diameter of the circle formed by the outer wall of the anti-falling structure 12; the outer ... The side diameter is 0.3-1.0mm larger than the diameter of the inner wall of the bottle mouth structure 41; the lower part of the outer wall of the anti-falling structure 12 is provided with an integrally formed undercut structure 13, and the undercut amount ranges from 0.1 to 0.8mm; the outer wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with a bottle body outer R angle 43, and the inner wall of the upper end of the bottle mouth structure 41 of the bottle body 4 is provided with a bottle body inner R angle 44, and the diameters of the bottle body outer R angle 43 and the bottle body inner R angle 44 are both in the range of 0.2-1.0mm; the gap value between the outer wall of the anti-falling structure 12 and the inner wall of the bottle mouth structure 41 is A, the roundness formed by the outer wall of the bottle mouth structure 41 is B, the diameter of the sealing ring 2 is C, and the diameter of the sealing ring 2 is the diameter of the circular cross-section of the sealing ring 2. When C≥A+B is satisfied, when the roundness of the bottle mouth structure 41 of the bottle body 4 is relatively poor, the sealing ring 2 can also play a better sealing role due to its own elasticity, and the sealing effect can also be achieved.

[0049] A tear C ring 5 is provided on the lower end face of the side wall of the upper cover body 11. When the bottle cap 1 and the bottle body 4 are assembled, the tear C ring 5 is located on the outer side face of the lower part of the bottle mouth structure 41 and the lower end of the tear C ring 5 is in contact with the connection between the bottle mouth structure 41 and the bottle body 4.

[0050] The inner wall of the upper cover body 11 is provided with an upper cover thread 15, and the outer wall of the bottle mouth structure 41 is provided with a bottle mouth thread 42. When the bottle cap 1 is twisted, the upper cover thread 15 cooperates with the bottle mouth thread 42, so that the bottle cap 1 can only move upward or downward along the axis of the bottle body 4.

[0051] A desiccant positioning device 3 is also provided inside the upper cover body 11 . The desiccant positioning device 3 is located inside the inner wall of the anti-falling structure 12 and is integrally formed with the upper cover body 11 . The desiccant positioning device 3 is matched with the desiccant, and the desiccant can be directly snapped into the desiccant positioning device 3 .

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A sealing structure for a bottle body and a bottle cap, comprising: A bottle cap (1), a sealing ring (2) and a bottle body (4), wherein the bottle cap (1) comprises: an upper cover body (11) and an anti-falling structure (12), wherein the bottle cap (1) is threadedly connected to the bottle body (4); the bottle cap (1) is characterized in that: an anti-falling structure (12) is arranged inside the upper cover body (11), a receiving chamber (14) is formed between the inner side wall of the upper cover body (11) and the outer side wall of the anti-falling structure (12), the sealing ring (2) is located at the connection between the outer wall of the anti-falling structure (12) and the upper inner wall of the upper cover body (11) and is arranged in the receiving chamber (14), and the sealing ring (2) is arranged at a position of the inner side wall of the receiving chamber (14) close to the upper end of the bottle mouth structure (41), the cross section of the sealing ring (2) is circular, the bottle mouth structure (41) is arranged on the upper part of the bottle body (4), and the bottle mouth structure (41) is located at the receiving chamber (14). The bottle mouth structure (41) is placed in the chamber (14) and the inner wall of the bottle mouth structure (41) is close to the outer edge of the sealing ring (2). The upper cover body (11) can completely cover the bottle mouth structure (41). The gap value between the outer wall of the anti-drop structure (12) and the inner wall of the bottle mouth structure (41) is A. The roundness formed by the outer wall of the bottle mouth structure (41) is B. The diameter of the sealing ring (2) is C. The diameter of the sealing ring (2) is the diameter of the circular cross section of the sealing ring (2), and C≥A+B is satisfied. The outer wall of the upper end of the bottle mouth structure (41) of the bottle body (4) is provided with an outer bottle body R angle (43). The inner wall of the upper end of the bottle mouth structure (41) of the bottle body (4) is provided with an inner bottle body R angle (44). The diameters of the outer bottle body R angle (43) and the inner bottle body R angle (44) are both in the range of 0.2 to 1.0 mm.

2. The sealing structure of the bottle body and the bottle cap according to claim 1, characterized in that: The inner diameter of the sealing ring (2) is 0 to 0.5 mm smaller than the diameter of the circle formed by the outer wall of the anti-fall-off structure (12).

3. The sealing structure of the bottle body and the bottle cap according to claim 1, characterized in that: The outer diameter of the sealing ring (2) is 0.3 to 1.0 mm larger than the inner wall diameter of the bottle mouth structure (41).

4. The sealing structure of the bottle body and the bottle cap according to claim 1, characterized in that: An integrally formed undercut structure (13) is provided at the lower portion of the outer side wall of the anti-fall-off structure (12), and the undercut amount ranges from 0.1 to 0.8 mm.

5. The sealing structure of the bottle body and the bottle cap according to claim 1, characterized in that: The sealing ring (2) is made of soft elastic material.

6. The sealing structure of the bottle body and the bottle cap according to claim 1, characterized in that: A tear C ring (5) is provided on the lower end surface of the side wall of the upper cover body (11); when the bottle cap (1) and the bottle body (4) are assembled, the tear C ring (5) is located on the outer side surface of the lower part of the bottle mouth structure (41), and the lower end of the tear C ring (5) is in contact with the connection between the bottle mouth structure (41) and the bottle body (4).

7. The sealing structure of the bottle body and the bottle cap according to claim 1, characterized in that: An upper cover thread (15) is provided on the inner side wall of the upper cover body (11), and a bottle mouth thread (42) is provided on the outer side wall of the bottle mouth structure (41). When the bottle cap (1) is twisted, the upper cover thread (15) matches with the bottle mouth thread (42).

8. The sealing structure of the bottle body and the bottle cap as claimed in claim 1, characterized in that: A desiccant positioning device (3) is also provided inside the upper cover body (11); the desiccant positioning device (3) is located inside the inner wall of the anti-fall-off structure (12) and is integrally formed with the upper cover body (11).

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