Plastic Bottle Cap Connecting Device

Abstract

The present invention relates to a plastic bottle cap connecting device implemented to connect two or more plastic container bottle caps to each other for use as connecting play blocks, comprising: a first polarity part that forms polarity and is fastened to the inner side of a first bottle cap; and a second polarity part that forms polarity opposite to the first polarity part and is fastened to the inner side of a second bottle cap, thereby connecting the first bottle cap, in which the second bottle cap and the first polarity part are fastened, by attaching them in a horizontal direction or an up-down vertical direction using opposite polarities.

Description

Technology Field

[0001] The present invention relates to a device capable of connecting plastic bottle caps to one another, and more specifically, to a plastic bottle cap connecting device implemented to connect the bottle caps of two or more plastic containers so that they can be used as connecting play blocks. Background Technology

[0003] Various assembly devices utilizing plastic bottle caps have the advantage of promoting recycling and enabling users to enjoy creative activities. Conventional bottle cap assembly devices primarily use methods of securing caps with screws or connecting them by compression. However, these methods not only limit the direction of connection but also result in unstable fastening, often causing the connection to loosen when strong force is applied. In particular, existing methods struggle to meet requirements when robust connections in both vertical and horizontal directions are necessary.

[0004] Consequently, there was a need for a new method to connect bottle caps in more stable and diverse directions. In response to this necessity, technology utilizing magnets began to be developed to enable easy attachment and detachment of bottle caps, as well as connection from various angles. The magnetic connection method not only provides strong fixing power but also offers the potential to significantly enhance the flexibility of the bottle cap connection structure due to its ease of attachment and detachment.

[0005] Meanwhile, the aforementioned background technology is technical information that the inventor possessed for the derivation of the present invention or acquired during the process of deriving the present invention, and it cannot necessarily be considered publicly known technology disclosed to the general public prior to the filing of the present invention. Prior art literature

[0007] Korean Registered Patent No. 10-26047322 (Published Nov. 23, 2023) The problem to be solved

[0008] One aspect of the present invention provides a plastic bottle cap connecting device capable of firmly connecting plastic bottle caps in an up-and-down vertical direction or a horizontal direction using magnets having mutually opposite polarities.

[0009] The problem to be solved by this specification is not limited to what is described above and can be extended to various matters that can be derived from the embodiments of the invention described below. means of solving the problem

[0011] A plastic bottle cap connecting device according to one embodiment of the present invention is a plastic bottle cap connecting device implemented to connect two or more plastic container bottle caps to each other and use them as connecting play blocks, and may include: a first polarity part that forms polarity and is fastened to the inner side of a first bottle cap; and a second polarity part that forms polarity opposite to the first polarity part and is fastened to the inner side of a second bottle cap, and connects the first bottle cap, in which the second bottle cap and the first polarity part are fastened, by attaching them in a horizontal direction or an up-down vertical direction using opposite polarities.

[0012] In one embodiment, the first polarity portion may include: a first coil-shaped magnet that forms polarity and is wound in the shape of a mainspring, which is seated on the inner side of the first bottle cap and then, as the spring is released by a restoring force, is seated in close contact along the inner surface of the first bottle cap and secured; and a first flat-shaped magnet that forms polarity, is formed in a flat shape, is installed at the end of the first coil-shaped magnet, and is seated on the inner surface of the first bottle cap.

[0013] In one embodiment, the second polarity portion may include: a second coil-type magnet that forms opposite polarity to the first coil-type magnet and is formed by being wound in the shape of a mainspring, and is seated on the inner side of the second bottle cap, and then the spring is released by a restoring force to be seated in close contact along the inner surface of the second bottle cap and secured; and a second flat-type magnet that forms opposite polarity to the first flat-type magnet, is formed in a flat shape, is installed at the end of the second coil-type magnet, and is seated on the inner surface of the second bottle cap.

[0014] In one embodiment, the first bottle cap may be horizontally attached to the second bottle cap as the side on which the first flat magnet is seated is fastened to the side of the second bottle cap on which the second flat magnet is seated by the attractive force between the first flat magnet and the second flat magnet.

[0015] In one embodiment, the first bottle cap may be attached to the second bottle cap in an up-and-down vertical direction by the attractive force between the first coil-shaped magnet fastened along the inner surface and the second coil-shaped magnet fastened along the inner surface of the second bottle cap.

[0016] In one embodiment, the first bottle cap can be attached and connected to the second bottle cap such that their upper sealing surfaces are in close contact with each other.

[0017] In one embodiment, the first flat magnet and the second flat magnet may be formed by bending into a round shape corresponding to the curvature of the inner surface of the first bottle cap or the second bottle cap so as to be closely seated along the inner surface of the first bottle cap or the second bottle cap.

[0018] In one embodiment, the first polarity portion may further include a first exposed flat magnet that forms a polarity, extends from the bottom of the first flat magnet and is spaced apart from the first flat magnet, and is seated along the outer surface of the first bottle cap as the first flat magnet is seated along the inner surface of the first bottle cap.

[0019] In one embodiment, the second polarity portion may further include a second exposed flat magnet that forms a polarity opposite to that of the first exposed flat magnet, extends from the bottom of the second flat magnet and is spaced apart from the second flat magnet, and is seated along the outer surface of the second bottle cap as the second flat magnet is seated along the inner surface of the second bottle cap.

[0020] In one embodiment, the first bottle cap can be horizontally attached to the second bottle cap as the first exposed flat magnet and the second exposed flat magnet exposed from the second bottle cap are engaged by an attractive force. Effects of the invention

[0022] According to one aspect of the present invention described above, a first bottle cap and a second bottle cap are each provided with a coil-type magnet and a flat-type magnet having mutually opposite polarities so that they can be strongly coupled in the vertical direction and the horizontal direction.

[0023] The first coil-shaped magnet attached to the inner surface of the first bottle cap and the second coil-shaped magnet attached to the inner surface of the second bottle cap form an attractive force, allowing for a firm connection in the vertical direction and enabling stable vertical assembly of the bottle caps. This allows the bottle caps to be connected in various spatial arrangements, thereby improving assembly flexibility.

[0024] In addition, since the first and second flat magnets form opposite polarities and are firmly joined in the horizontal direction, the user can freely arrange the bottle caps in the desired shape. This structure allows bottle caps to be combined in various directions, enabling creative assembly activities.

[0025] It should be understood that the effects of this specification are not limited to the matters described above and can be extended to various contents that can be derived from the detailed description of the embodiments of the invention below. Brief explanation of the drawing

[0027] FIG. 1 is a diagram showing the schematic configuration of a plastic bottle cap connecting device according to one embodiment of the present invention. FIGS. 2 and FIGS. 3 are drawings showing a method of connecting plastic bottle caps using a plastic bottle cap connecting device according to an embodiment of the present invention. FIGS. 4 to 6 are drawings showing the first polarity portion of FIG. 1. Figure 7 is a drawing showing another embodiment of the first flat magnet of Figure 4. FIG. 8 is a drawing showing another embodiment of the first polarity part and the second polarity of FIG. 1. Specific details for implementing the invention

[0028] In describing the embodiments of this specification, if it is determined that a detailed description of known configurations or functions could obscure the essence of the embodiments of this specification, such detailed description is omitted. Additionally, parts of the drawings unrelated to the description of the embodiments of this specification have been omitted, and similar parts are denoted by similar reference numerals.

[0029] In the embodiments of this specification, when a component is described as being "connected," "combined," or "joined" with another component, this may include not only a direct connection but also an indirect connection in which another component exists in between. Furthermore, when a component is described as "comprising" or "having" another component, this means that, unless specifically stated otherwise, it does not exclude the other component but may include additional components.

[0030] In the embodiments of this specification, terms such as first, second, etc. are used solely for the purpose of distinguishing one component from another component and do not limit the order or importance of the components unless specifically stated otherwise. Accordingly, within the scope of the embodiments of this specification, the first component in an embodiment may be referred to as the second component in another embodiment, and likewise, the second component in an embodiment may be referred to as the first component in another embodiment.

[0031] In the embodiments of this specification, distinct components are intended to clearly explain their respective features and do not imply that the components are necessarily separated. That is, multiple components may be integrated to form a single hardware or software unit, or a single component may be distributed to form multiple hardware or software units. Therefore, such integrated or distributed embodiments are included within the scope of the embodiments of this specification, even if not otherwise mentioned.

[0032] The components described in the various embodiments do not necessarily mean essential components, and some may be optional components. Accordingly, embodiments consisting of a subset of the components described in the embodiments are also included within the scope of the embodiments of this specification. Furthermore, embodiments including other components in addition to the components described in the various embodiments are also included within the scope of the embodiments of this specification.

[0033] Hereinafter, embodiments of the present specification will be examined in detail with reference to the drawings.

[0035] FIG. 1 is a diagram showing the schematic configuration of a plastic bottle cap connecting device according to one embodiment of the present invention.

[0036] Referring to FIG. 1, a plastic bottle cap connecting device (10) according to the present embodiment includes a first polarity part (100) and a second polarity part (200).

[0037] The first polarity portion (100) is fastened to the inner side of the first bottle cap (L1) to form polarity and provides the basic fastening function of the plastic bottle cap connecting device (10). Since the first bottle cap (L1) can be combined with other bottle caps through the first polarity portion (100), it has a structure in which multiple bottle caps can be connected like play blocks.

[0038] In one embodiment, the first polarity portion (100) may include a first coil-shaped magnet (110) and a first flat-shaped magnet (120).

[0039] The first coil-type magnet (110) is formed by being wound into a coil spring shape capable of expanding or contracting as shown in FIG. 4, and is seated on the inner side of the first bottle cap (L1) in a contracted state as shown in FIG. 5. Subsequently, as shown in FIG. 6, the spring is released by a restoring force and adheres to the inner surface of the first bottle cap (L1), thereby enabling a secure connection with the first bottle cap (L1). This structure provides a stable fixing force when the first bottle cap (L1) is combined with another bottle cap, thereby improving the durability of the plastic bottle cap connecting device (10).

[0040] At this time, the first coil-shaped magnet (110) can be attached using polarity with the second coil-shaped magnet (210) placed on the inner side of the second bottle cap (L2) as shown in FIG. 3, thereby connecting the first bottle cap (L1) and the second bottle cap (L2) in a vertical direction.

[0041] That is, according to the present invention, the first bottle cap (L1) is attached and connected in an up-and-down vertical direction by the attractive force between the first coil-shaped magnet (110) attached along the inner surface and the second coil-shaped magnet (210) attached along the inner surface of the second bottle cap (L2).

[0042] The first coil-shaped magnet (110) is fastened in close contact along the inner surface of the first bottle cap (L1) and forms a mutual attractive force with the second coil-shaped magnet (210) fastened to the second bottle cap (L2). This attractive force causes the first bottle cap (L1) and the second bottle cap (L2) to be firmly attached in the vertical direction, thereby providing a flexible assembly structure of the bottle cap connecting device (10).

[0043] Accordingly, the plastic bottle cap connecting device (10) according to one embodiment having the configuration described above allows bottle caps to be attached and connected in an up-and-down vertical direction by the attractive force between the first coil-shaped magnet (110) and the second coil-shaped magnet (210), thereby enabling various spatial arrangements and assembly configurations.

[0044] When the first bottle cap (L1) and the second bottle cap (L2) are connected in an up-and-down vertical direction, it is preferable that the upper sealing surfaces of the two bottle caps (L1, 2) be closely attached to each other as shown in FIG. 3.

[0045] The fastening method as illustrated in FIGS. 4 to 6 can be applied in the same way to the second coil-shaped magnet (210) of the second polarity part (200), but the explanation below will be omitted to avoid duplication of explanation.

[0046] The first flat magnet (120) is formed in a flat shape and is installed at the end of the first coil magnet (110) and rests on the inner surface of the first bottle cap (L1). The first flat magnet (120) is combined with the first coil magnet (110).

[0047] At this time, the first flat magnet (120) can be attached using polarity with the second flat magnet (220) placed on the inner side of the second bottle cap (L2) as shown in FIG. 2, thereby connecting the first bottle cap (L1) and the second bottle cap (L2) in a horizontal direction.

[0048] That is, according to the present invention, the first bottle cap (L1) is attached horizontally by means of an attractive force between the side of the second bottle cap (L2) and the side of the first flat magnet (120) on which it is seated, as shown in FIG. 2.

[0049] The first flat magnet (120) is positioned on the inner side of the first bottle cap (L1) and forms an attractive force with the side of the second bottle cap (L2) on which the second flat magnet (220) is seated. Due to this attractive force, the first bottle cap (L1) and the second bottle cap (L2) are firmly connected in the horizontal direction, and bottle cap connections in various directions are possible, thereby increasing the flexibility of assembly.

[0050] Accordingly, the plastic bottle cap connecting device (10) according to one embodiment having the configuration described above enables horizontal attachment connection between bottle caps through the attractive force between the first flat magnet (120) and the second flat magnet (220), thereby allowing various assemblies by connecting bottle caps in a shape desired by the user.

[0051] The second polarity portion (200) is fastened to the inner side of the second bottle cap (L2) to form a polarity opposite to that of the first polarity portion (100), allowing the second bottle cap (L2) and the first bottle cap (L1) to be attached in a horizontal direction or an up-and-down vertical direction using opposite polarities. Through this, the first bottle cap (L1) and the second bottle cap (L2) are fixed in a connected state, and the bottle cap connecting device (10) provides a function for plastic container bottle caps to be assembled and connected in various forms like play blocks.

[0052] In one embodiment, the second polarity portion (200) may include a second coil-type magnet (210) and a second flat-type magnet (220).

[0053] The second coil-shaped magnet (210) forms opposite polarity to the first coil-shaped magnet (110) and is formed by being wound in the shape of a clockwork spring. After being seated on the inner side of the second bottle cap (L2), the spring is released by a restoring force and adheres to the inner surface of the second bottle cap (L2), enabling a firm connection with the second bottle cap (L2). Through this, the first bottle cap (L1) and the second bottle cap (L2) are strongly connected using mutually opposite polarities, thereby enhancing the assembly stability of the bottle cap connecting device (10).

[0054] The second flat magnet (220) forms opposite polarity to the first flat magnet (120) and is formed in a flat shape. It is installed at the end of the second coiled magnet (210) and rests on the inner surface of the second bottle cap (L2). The second flat magnet (220) combines with the second coiled magnet (210) to increase the contact area with the second bottle cap (L2) and further enhance the connection stability between the bottle caps.

[0055] According to one embodiment, the first flat magnet (120a) and the second flat magnet (220a) are formed by bending them into a round shape corresponding to the curvature of the inner surface of each bottle cap so that they can be seated in close contact with the inner surface of the first bottle cap (L1) or the second bottle cap (L2) as shown in FIG. 7, thereby allowing them to be seated in close contact with the inner surface of the bottle cap through a curvature-corresponding structure and enabling a more robust connection. Through this, the bottle cap connecting device (10) can increase the connection strength by improving the contact force between the magnet and the inner surface of the bottle cap.

[0056] A plastic bottle cap connecting device (10) according to one embodiment having the configuration described above is configured to connect two or more plastic container bottle caps to each other so that they can be used as play blocks, thereby enabling various forms of assembly and providing the user with creative assembly activities.

[0057] The plastic bottle cap connecting device (10) according to the present embodiment having the configuration described above can be assembled in various forms by firmly connecting bottle caps in an up-and-down vertical or horizontal direction using magnets having mutually opposite polarities, and can provide the user with creative assembly activities.

[0058] The selection of materials for the first and second flat magnets (110, 210) and the first and second coiled magnets (120, 220) according to the embodiments will be explained.

[0059] Since the first and second planar magnets (110, 210) must perform the role of attracting each other with a strong magnetic force, a material capable of exerting a high magnetic force is required. In one embodiment, the first and second planar magnets (110, 210) are made of a rare earth permanent magnet such as neodymium (NdFeB) as such material. Neodymium magnets provide high magnetic flux density and strong magnetic force, so they can effectively perform the role of the first and second planar magnets (110, 210). In addition, since the first and second planar magnets (110, 210) require structural rigidity, they can be manufactured from a relatively hard material.

[0060] Meanwhile, the first and second coil-shaped magnets (120, 220) must have flexibility that allows a user to bend them with hand strength while maintaining magnetic force. Since the first and second coil-shaped magnets (120, 220) function to be bent and fixed when inserted into the inside of the bottle cap, they can be formed from a flexible material. Accordingly, in one embodiment, the first and second coil-shaped magnets (120, 220) may be made of a composite material such as a rubber magnet or a ferrite coil-shaped magnet that can be molded while maintaining a relative magnetic flux density. Such materials allow for easy shape adjustment along with magnetic force characteristics, making them advantageous for insertion and fixation into the small space inside the bottle cap.

[0061] In addition, in one embodiment, the first and second flat magnets (110, 210) and the first and second coiled magnets (120, 220) may be formed independently, but may also be formed as an integrated structure. For example, the first flat magnet (110) and the first coiled magnet (120) may be formed from a single magnet strip that extends integrally from one another, and the second flat magnet (120) and the second coiled magnet (220) may be formed in the same way.

[0062] In this case, it is necessary to manufacture it by considering the combination of material characteristics described above. For example, when the first flat magnet (110) and the first coil magnet (120) are integrally formed using a single magnet strip, the width of the magnet strip (i.e., the length in the vertical direction in the drawing) is increased in the part of the first flat magnet (110) where relatively strong rigidity and strong magnetic force are required, and the width of the magnet strip is decreased in the part of the first coil magnet (120) where relatively flexibility is required, so that the areas of the first flat magnet (110) and the first coil magnet (120) can be distinguished from a single integrated magnet strip.

[0063] In addition, in one embodiment, a first flat magnet (110) and a first coil magnet (120) are formed from a single integrated magnet strip, and the magnetic force and stiffness may be increased by coating an additional magnetic material (not shown) on the surface of the region of the magnet strip corresponding to the first flat magnet (110).

[0064] It will be easily understood by a person skilled in the art that the principle described above for the first flat magnet (110) and the first coil magnet (120) can be applied in the same way to the second flat magnet (120) and the second coil magnet (220).

[0066] FIG. 8 is a drawing showing another embodiment of the first polarity part and the second polarity of FIG. 1.

[0067] Referring to FIG. 8, a first polarity portion (100a) according to another embodiment includes a first coil-type magnet (110), a first flat-type magnet (120), and a first exposed flat-type magnet (130).

[0068] Here, the first coil-type magnet (110) and the first flat-type magnet (120) are identical to the components of FIG. 1, so their description is omitted to avoid duplication of description.

[0069] The first exposed flat magnet (130) is formed extending from the bottom of the first flat magnet (120) and is spaced apart from the first flat magnet (120). As the first flat magnet (120) is seated along the inner surface of the first bottle cap (L1), the first exposed flat magnet (130) is seated along the outer surface of the first bottle cap (L1). Through this, the first bottle cap (L1) strengthens the magnetic attraction effect from the outside, making the connection between the bottle caps more robust.

[0070] According to another embodiment, the second polarity portion (200a) includes a second coil-type magnet (210), a second flat-type magnet (220), and a second exposed flat-type magnet (230).

[0071] Here, the second coil-type magnet (210) and the second flat-type magnet (220) are identical to the components of FIG. 1, so the description is omitted to avoid duplication of explanation.

[0072] The second exposed flat magnet (230) forms opposite polarity to the first exposed flat magnet (130) and extends from the bottom of the second flat magnet (220) and is spaced apart from the second flat magnet (220). As the second flat magnet (220) is seated along the inner surface of the second bottle cap (L2), the second exposed flat magnet (230) is seated along the outer surface of the second bottle cap (L2). Through this, the second bottle cap (L2) and the first bottle cap (L1) are strongly joined at the outer surface using magnets of opposite polarity.

[0073] According to the present invention, the first bottle cap (L1) can be attached and connected in a horizontal direction by the attractive force of the first exposed flat magnet (130) and the second exposed flat magnet (230) exposed from the second bottle cap (L2).

[0074] The first exposed flat magnet (130) is located on the outer surface of the first bottle cap (L1) and is coupled with the second exposed flat magnet (230) located on the outer surface of the second bottle cap (L2) by forming an attractive force with each other. Through this, the first bottle cap (L1) and the second bottle cap (L2) are firmly attached in the horizontal direction and can be connected in various assembly forms.

[0075] The first polarity part (100a) according to another embodiment having the configuration described above and the second polarity part (200a) according to another embodiment enable coupling between bottle caps through a horizontal attachment connection between the first exposed flat magnet (130) and the second exposed flat magnet (230), thereby providing the user with a diverse assembly structure and flexibility of assembly.

[0076] To provide strong adhesive force in the horizontal direction, the first flat magnet (120) and the first exposed flat magnet (130) are formed integrally to form a U-shape, and a groove may be formed on the inner side in the vertical direction (i.e., the insertion direction of the bottle cap) or the horizontal direction (i.e., a direction perpendicular to the insertion direction of the bottle cap). This U-shaped structure is designed so that one end of the bottle cap (L1) can be inserted into the corresponding groove, thereby strengthening the bonding force with the bottle cap. In particular, the inner groove of the U-shaped structure provides a more robust fastening state as the magnetic force of the magnet interacts with the physical bonding while the one end of the bottle cap is stably inserted, preventing the bottle cap from easily separating due to external impact or vibration, and ensuring stability during use.

[0077] The structure according to the embodiments of the present invention described above enhances the durability of the bottle cap coupling block by firmly fixing the bottle cap using the strong magnetic force of a magnet, and provides the user with more convenient and reliable operability. Since this coupling method can exhibit stable performance even in various application environments, it can be applied for the purpose of utilizing bottle caps included in various products as blocks for play or learning.

[0079] Although the present specification described above has been explained with reference to the embodiments illustrated in the drawings, this is merely illustrative and those skilled in the art will understand that various modifications and variations of the embodiments are possible therefrom. However, such modifications should be considered to be within the technical scope of protection of the present specification. Accordingly, the true technical scope of protection of the present specification should be determined to include other implementations, other embodiments, and equivalents to the claims based on the technical spirit of the appended claims. Explanation of the symbols

[0081] 10: Plastic bottle cap connector 100: First polarity 110: First coil-type magnet 120: First flat magnet 200: Second polarity 210: Second coil-type magnet 220: Second flat magnet

Claims

Claim 1 A plastic bottle cap connecting device implemented to connect the bottle caps of two or more plastic containers so as to be used as connecting play blocks, comprising: a first polarity part that forms polarity and is fastened to the inner side of a first bottle cap; and a second polarity part that forms polarity opposite to the first polarity part and is fastened to the inner side of a second bottle cap, thereby connecting the first bottle cap and the second bottle cap, which are in a state where the first polarity part is fastened, by attaching them in a horizontal direction or an up-down vertical direction using opposite polarity; wherein the first polarity part comprises a first coil-shaped magnet that forms polarity, is formed by being wound in the shape of a mainspring, and is fastened by being seated on the inner side of the first bottle cap and then unwinding the spring by a restoring force to be closely seated along the inner surface of the first bottle cap. A plastic bottle cap connecting device comprising: a first flat magnet that forms polarity and is formed in a flat shape, installed at the end of the first coil-shaped magnet, and seated on the inner circumference of the first bottle cap. Claim 2 delete Claim 3 A plastic bottle cap connecting device according to claim 1, wherein the second polarity portion forms opposite polarity to the first coil-type magnet and is formed by winding into a mainspring shape, and is seated on the inner side of the second bottle cap, and then the spring is released by a restoring force to be seated in close contact along the inner surface of the second bottle cap and secured; and a second flat magnet that forms opposite polarity to the first flat magnet, is formed in a flat shape, is installed at the end of the second coil-type magnet, and is seated on the inner surface of the second bottle cap. Claim 4 A plastic bottle cap connecting device according to paragraph 3, wherein the first bottle cap is horizontally attached to the second bottle cap as the side on which the first flat magnet is seated is fastened to the side of the second bottle cap on which the second flat magnet is seated by the attractive force between the first flat magnet and the second flat magnet. Claim 5 In paragraph 3, the plastic bottle cap connecting device is attached vertically to the second bottle cap by the attractive force between the first coil-shaped magnet fastened along the inner surface and the second coil-shaped magnet fastened along the inner surface of the second bottle cap. Claim 6 In claim 5, the first bottle cap is a plastic bottle cap connecting device in which, when attached and connected with the second bottle cap, their upper sealing surfaces are in close contact with each other. Claim 7 A plastic bottle cap connecting device according to paragraph 3, wherein the first flat magnet and the second flat magnet are formed by bending into a round shape corresponding to the curvature of the inner surface of the first bottle cap or the second bottle cap so as to be closely seated along the inner surface of the first bottle cap or the second bottle cap. Claim 8 A plastic bottle cap connecting device according to claim 3, further comprising: a first polarity portion forming polarity, extending from the bottom of the first flat magnet and spaced apart from the first flat magnet, and a first exposed flat magnet that is seated along the outer surface of the first bottle cap as the first flat magnet is seated along the inner surface of the first bottle cap. Claim 9 A plastic bottle cap connecting device according to claim 8, further comprising: a second exposed flat magnet that forms opposite polarity to the first exposed flat magnet, extends from the bottom of the second flat magnet and is spaced apart from the second flat magnet, and is seated along the outer surface of the second bottle cap as the second flat magnet is seated along the inner surface of the second bottle cap. Claim 10 In claim 9, the first bottle cap is a plastic bottle cap connecting device in which the first exposed flat magnet and the second exposed flat magnet exposed from the second bottle cap are connected by an attractive force and are attached horizontally to the second bottle cap.

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