Connecting structure for bottleneck and bottle cap of plastic bottle
By setting up a column and annular flexible seal in the plastic bottle cap, and setting a storage cavity and sealing film in the cylinder, the problem of poor sealing performance of the plastic bottle is solved, and a stable sealing and multi-functional bottle cap design is achieved.
Patent Information
- Application Number
- CN202420928274.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Existing plastic bottles have poor sealing performance, and the sealing rings or gaskets are easily loosened during repeated use, resulting in poor seal reliability.
A column is provided in the bottle cap, and an annular flexible seal is installed on the cylinder. The flexible seal is pressedly connected to the inner wall of the bottle mouth, and the sealing effect is improved through at least two protrusions, and a receiving cavity is provided inside the cylinder and Seal the film to enhance function.
It realizes stable installation and high sealing performance of seals, while reducing the amount and friction of seals, improving the function and reliability of bottle caps.
Smart Images
Figure CN222248385U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic bottles, in particular to a connection structure between a bottle mouth and a bottle cap of a plastic bottle. Background Art
[0002] At present, most plastic bottles are sealed from the outside world by tightening the bottle cap on the bottle mouth, and the sealing performance of the bottle cap is not very good. In order to further improve the sealing effect of the structure, a rubber sealing gasket (rubber sealing ring) is used in the bottle cap to improve the sealing coefficient. When the bottle cap is placed on the bottle mouth, the upper edge of the bottle mouth is pressed tightly against the sealing gasket or sealing ring to form a seal; Figure 1 As shown, a sealing ring 20 is provided on the inner side of the bottle cap 2. When the bottle cap 2 is covered on the bottle mouth 11, the upper edge of the bottle mouth 11 is pressed tightly against the sealing ring 20; or as shown in the Chinese utility model patent with publication number: CN202122264701.4, which discloses an anti-theft plastic sealing cover for bottle body sealing, which is provided with a sealing gasket at the gap between the inner wall of the plastic bottle cap and the outer wall of the sealing platform. By providing the sealing gasket, the plastic bottle cap and the bottle mouth can be more tightly matched. Although the sealing ring or sealing gasket can increase the sealing performance, the sealing ring or sealing gasket is easy to loosen when the bottle cap and the bottle mouth are matched many times during the repeated use of the plastic bottle, and its reliability is poor. Summary of the invention
[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a connection structure between the mouth of a plastic bottle and a bottle cap, which solves the technical problem of poor sealing reliability of the existing plastic bottles.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A connection structure between a mouth of a plastic bottle and a bottle cap, comprising: a bottle body, with a mouth on the top; a bottle cap, which is arranged on the mouth of the bottle; a column protruding from the inside of the bottle cap; a mounting groove formed on the outer wall of the column; a flexible seal arranged in the mounting groove; wherein the flexible seal is an annular structure, the flexible seal partially protrudes from the mounting groove, and the flexible seal is extruded and connected to the inner wall of the mouth of the bottle.
[0006] The utility model arranges a column on the inner side of the bottle cap, and arranges a flexible sealing member that can cooperate with the inner wall of the bottle mouth on the column. The flexible sealing member is arranged in the installation groove and is squeezed and connected with the inner wall of the bottle mouth. While ensuring the sealing requirement, the sealing member is stably installed and is not easy to fall off.
[0007] Optionally, a first connecting portion is disposed on the outer wall of the bottle mouth, and a second connecting portion cooperating with the first connecting portion is disposed on the inner wall of the bottle cap; and a safety ring is disposed at the bottom end of the bottle cap.
[0008] Optionally, the flexible seal is a rubber flexible seal.
[0009] Optionally, at least two protrusions are provided on the outer peripheral wall of the flexible seal near the inner wall of the bottle mouth. The flexible seal adopts at least two protrusions. On the one hand, multiple protrusions can play multiple sealing roles, and the sealing performance is strong; on the other hand, the amount of seal is reduced, saving costs; at the same time, the contact area between the seal and the inner wall of the bottle mouth is also small, and the friction between the two is also small, which is convenient to use.
[0010] Optionally, two protrusions are provided on the outer peripheral wall of the flexible sealing member close to the inner wall of the bottle mouth, and a groove is formed between the two protrusions.
[0011] Optionally, the protrusion is located between the inner wall of the bottle mouth and the outer wall of the cylinder.
[0012] Optionally, the side walls on both sides of the groove bottom of the installation groove are provided with card slots, and the flexible sealing component is provided with a card connection portion that is card-engaged with the card slots.
[0013] Optionally, the cylinder has a receiving cavity with an open lower end, and a sealing film is provided on the receiving cavity for sealing the open end. By providing a receiving cavity with an open lower end inside the cylinder and providing a puncturable sealing film at the opening, the receiving cavity can be used to hold liquid or solid objects, and the liquid or solid objects can be released from the bottle cap when needed, thereby improving the use function of the bottle cap.
[0014] Optionally, a pressing platform is provided at the upper end of the bottle cap, a puncture cone is provided at the lower end of the pressing platform, the lower end of the puncture cone is provided close to the sealing film, and the pressing platform is made of elastic material.
[0015] Optionally, the bottle cap side wall extends upward with an extension portion, and the pressing platform is located inside the extension portion. The extension portion and the pressing platform inside the extension portion are not only convenient to use, but also can prevent the sealing film from being punctured due to accidental contact during transportation, sales or use.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] 1. The utility model sets a column on the inner side of the bottle cap, and sets a flexible seal on the column that can cooperate with the inner wall of the bottle mouth. The flexible seal is set in the installation groove and squeezed and connected with the inner wall of the bottle mouth. While ensuring the sealing requirements, the seal is stably installed and not easy to fall off. The flexible seal adopts at least two raised parts. On the one hand, multiple raised parts can play multiple sealing and have strong sealing performance; on the other hand, it also reduces the amount of seals (sealing rings) used and saves costs; at the same time, the contact area between the seal and the inner wall of the bottle mouth is also small, and the friction between the two is also small, which is convenient to use.
[0018] 2. By setting a receiving cavity with an opening at the lower end inside the column and setting a puncturable sealing film at the opening, the receiving cavity can be used to hold liquid or solid objects, and the liquid or solid objects can be released from the bottle cap when needed, thereby improving the use function of the bottle cap. The extension part and the pressing platform inside the extension part are not only convenient to use, but also can prevent the sealing film from being punctured due to accidental contact during transportation, sales or use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0020] Figure 1 It is a structural schematic diagram of the prior art.
[0021] Figure 2 It is a structural schematic diagram of the utility model.
[0022] Figure 3 The figure is a schematic structural diagram of an embodiment of a bottle cap in the utility model.
[0023] Figure 4 It is a structural schematic diagram of the flexible sealing member in the utility model.
[0024] Figure 5 for Figure 4 Sectional view of AA.
[0025] Figure 6 This is a schematic diagram of the structure of Example 2.
[0026] Figure numerals: 1. bottle body; 11. bottle mouth; 12. first connecting part; 2. bottle cap; 20. sealing ring; 21. second connecting part; 22. safety ring; 23. pressing platform; 24. extension part; 3. column; 31. mounting groove; 32. card slot; 33. accommodating chamber; 4. flexible sealing member; 41. protrusion; 42. card connection part; 5. sealing film; 6. puncture cone. DETAILED DESCRIPTION
[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0028] In the description of the embodiments of the present utility model application, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model application.
[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0030] In the embodiments of the present utility model application, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model application can be understood according to the specific circumstances.
[0031] In the embodiments of the utility model application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0032] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the utility model application. In order to simplify the disclosure of the embodiments of the utility model application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the utility model application. In addition, the embodiments of the utility model application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0033] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0034] Example 1
[0035] like Figure 2~Figure 5 As shown, the embodiment of the utility model application provides a connection structure between a bottle mouth and a bottle cap of a plastic bottle, including a bottle body 1, a bottle mouth 11 on the top of the bottle body 1, a movable cover on the bottle mouth 11 is provided with a bottle cap 2, a column 3 is provided inside the bottle cap 2, a gap is provided between the outer wall of the column 3 and the inner wall of the bottle cap 2, and a flexible sealing member 4 that can fit on the inner wall of the bottle mouth is provided on the outer wall of the column 3.
[0036] Furthermore, a mounting groove 31 is provided in an annular shape on the outer wall of the column 3, and the flexible seal 4 is an annular structure, adapted to and arranged in the mounting groove 31, and a portion of the flexible seal 4 protrudes from the mounting groove 31. When the bottle cap 2 is closed on the bottle mouth 11, the flexible seal 4 is squeezed and connected to the inner wall of the bottle mouth 11.
[0037] The outer wall of the bottle mouth 11 is provided with a first connection part 12, and the inner wall of the bottle cap 2 is provided with a second connection part 21 that cooperates with the first connection part 12. Optionally, the second connection part 21 is threadedly connected to the first connection part 12, that is, the outer wall of the bottle mouth 11 is provided with an external thread, and the inner wall of the bottle cap 2 is provided with an internal thread that cooperates with the external thread.
[0038] Optionally, a safety ring 22 is provided at the bottom end of the bottle cap 2 .
[0039] Optionally, at least two protrusions 41 are provided on the outer peripheral wall of the flexible seal 4 near the inner wall of the bottle mouth 11. The protrusion 41 is located between the inner wall of the bottle mouth 11 and the outer wall of the cylinder 3. In the present embodiment, two protrusions 41 are preferably provided, and a groove is formed between the two protrusions 41. During use, when the second connection portion 21 of the bottle cap 2 is threadedly connected to the first connection portion 12 of the bottle mouth 11, the two protrusions 41 of the flexible seal 4 fit tightly against the inner wall of the bottle mouth 11. After the first connection portion 12 and the second connection portion 21 are initially sealed, a multi-layer seal is formed by using the two protrusions 41 of the flexible seal 4, that is, the two protrusions 41 form a two-layer seal again, thereby further improving the sealing effect.
[0040] Optionally, the side walls on both sides of the bottom of the installation groove 31 are provided with a clamping groove 32, and the flexible seal 4 is provided with a clamping portion 42 that is clamped and matched with the clamping groove 32. Through the cooperation between the installation groove 31 and the clamping portion 42, the flexible seal 4 can be stably fixed in the installation groove 31 and is not easy to be separated from the installation groove 31.
[0041] Optionally, the flexible sealing member 4 is a rubber sealing ring.
[0042] In one embodiment, multiple flexible seals 4 can be provided. Accordingly, multiple installation grooves 31 are spaced apart from top to bottom on the outer wall of the column 3. Multiple flexible seals 4 are correspondingly arranged in the installation grooves 31. The sealing effect can be further improved by multiple flexible seals 4.
[0043] Example 2
[0044] like Figure 6 As shown, the embodiment of the utility model application provides a connection structure between the mouth of a plastic bottle and a bottle cap. On the basis of embodiment 1, in this embodiment, the interior of the column 3 has a accommodating cavity 33 with an open lower end, and a sealing film 5 is provided on the accommodating cavity 33 for closing the open end.
[0045] Optionally, a pressing platform 23 is provided at the upper end of the bottle cap 2, and a puncturing cone 6 is provided at the lower end of the pressing platform 23. The lower end of the puncturing cone 6 is arranged close to the sealing film 5. The pressing platform 23 is made of elastic material. The pressing platform 23 is formed by the outer upper protrusion on the top of the bottle cap 2. By pressing the pressing platform 23, the puncturing cone 6 is driven to puncture the sealing film 5.
[0046] Optionally, an extension portion 24 is extended upward from the side wall of the bottle cap 2, and the pressing platform 23 is located on the inner side of the extension portion 24. When in use, it is necessary to apply pressure downward from the inner side of the extension portion 24 to activate the puncturing cone 6. This can effectively prevent the sealing film 5 from being punctured due to accidental contact during transportation, sale or use.
[0047] Parts not described in detail in this embodiment are well-known techniques in the art.
[0048] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A connection structure between a bottle mouth and a bottle cap of a plastic bottle, characterized in that: include: A bottle body (1) having a bottle mouth (11) at the top; A bottle cap (2) disposed on the bottle mouth (11); A column (3) is protrudingly provided inside the bottle cap (2); The outer wall of the column (3) is provided with a mounting groove (31); A flexible sealing member (4) is arranged in the installation groove (31); The flexible sealing member (4) is an annular structure, a portion of the flexible sealing member (4) protrudes from the mounting groove (31), and the flexible sealing member (4) is extruded and connected to the inner wall of the bottle mouth (11).
2. The connection structure according to claim 1, characterized in that: The outer wall of the bottle mouth (11) is provided with a first connecting portion (12), and the inner wall of the bottle cap (2) is provided with a second connecting portion (21) that cooperates with the first connecting portion (12); and a safety ring (22) is provided at the bottom end of the bottle cap (2).
3. The connection structure according to claim 1, characterized in that: The flexible sealing member (4) is a rubber flexible sealing member.
4. The connection structure according to claim 1, characterized in that: At least two protrusions (41) are provided on the outer peripheral wall of the flexible sealing member (4) close to the inner wall of the bottle mouth (11).
5. The connection structure according to claim 1, characterized in that: Two raised portions (41) are provided on the outer peripheral wall of the flexible sealing member (4) close to the inner wall of the bottle mouth (11), and a groove is formed between the two raised portions (41).
6. The connection structure according to claim 4 or 5, characterized in that: The raised portion (41) is located between the inner wall of the bottle mouth (11) and the outer wall of the column (3).
7. The connection structure according to any one of claims 1 to 5, characterized in that: The side walls on both sides of the groove bottom of the installation groove (31) are provided with clamping grooves (32), and the flexible sealing component (4) is provided with a clamping portion (42) that is clamped and matched with the clamping groove (32).
8. The connection structure according to claim 1, characterized in that: The column (3) has an accommodation cavity (33) with an open lower end inside, and a sealing film (5) is provided on the accommodation cavity (33) for sealing the open end.
9. The connection structure according to claim 8, characterized in that: A pressing platform (23) is provided at the upper end of the bottle cap (2), a puncturing cone (6) is provided at the lower end of the pressing platform (23), the lower end of the puncturing cone (6) is arranged close to the sealing film (5), and the pressing platform (23) is made of elastic material.
10. The connection structure according to claim 9, characterized in that: An extension portion (24) extends upward from the side wall of the bottle cap (2), and the pressing platform (23) is located on the inner side of the extension portion (24).