buckle
The buckle design with cylindrical top covers and fitting bases using magnets addresses smooth coupling and uncoupling issues, offering versatile configurations and decorative applications.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- 王建ウェイ
- Filing Date
- 2025-12-07
- Publication Date
- 2026-06-22
AI Technical Summary
Existing buckles face challenges in smooth connection and removal of male and female parts, and limited application configurations due to single connection methods.
A buckle design featuring cylindrical top covers and fitting bases with magnets, allowing for magnetic coupling and diverse configurations through flange portions to prevent detachment.
Enables smooth and force-free coupling and uncoupling, along with increased application versatility by allowing the fixed end to be fitted on the outer circumference or bottom of the circular base, enhancing usability and decorative possibilities.
Smart Images

Figure 2026101632000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an object coupling device, particularly to a buckle.
Background Art
[0002] A buckle is a device for connecting or fixing objects and is commonly found in products such as clothing, shoes, backpacks, seat belts, etc. Depending on the structure such as a snap-in buckle, a snap buckle, a pin buckle, etc., the length can be adjusted or the article can be fixed. The main function of the buckle is to facilitate the coupling, attachment and detachment, and adjustment of the tightening of the object and ensure its stability. Common types of buckles include the following. A snap-in buckle is usually used for backpacks and seat belts and can be released by pressing both sides. A pin buckle is similar to a belt buckle and fixes the pin through the hole in the belt. A magnetic buckle utilizes magnetic force to automatically adsorb and is commonly found in the design of handbags and anti-theft bags. A rotary buckle rotates a screw structure to fix or release and is commonly found in suitcases and handbags. A snap buckle can be fastened by simply pressing and is commonly found in clothing and decorations. These buckle designs can meet specific functional requirements and may also consider aesthetics and usability.
Summary of the Invention
Problems to be Solved by the Invention
[0003] Although the buckle is a common and essential tool in daily life, there are also some problems in the practical use of these products. For example, the connection between the male part and the female part of the buckle may not be smooth, and it may be difficult to insert and remove during connection. Also, the connection method with the connector to be joined to the buckle is single, and it is subject to limitations in application.
[0004] In order to solve the above-mentioned difficulties in use, the present invention has been proposed.
Means for Solving the Problems
[0005] This document presents a selection of some of the features of the present invention. Other features will be disclosed in subsequent paragraphs. The purpose is to encompass various modifications and similar arrangements of the spirit and scope of the appended claims.
[0006] To solve the aforementioned difficulties in use, the present invention provides a buckle. The buckle includes a top cover and a fitting base, The aforementioned top cover is The external appearance is cylindrical, with a first circular groove open in the center, and a first circular insertion part in which a first magnet is fixed, A circular top cover is connected to the upper center of the first circular insertion portion and forms a first flange portion toward the outside, The above the circular top cover is connected to the first fixed end, The aforementioned fitting base is, The external appearance is cylindrical, with a second circular groove open in the center, the inner diameter of the second circular groove being slightly larger than the outer diameter of the first circular insertion part, the depth of the second circular groove being the same as or slightly smaller than the height of the first circular insertion part, and a third circular groove being formed in the center of the bottom of the second circular groove, with the second magnet fixed within the third circular groove, A circular base is connected to the lower center of the second circular insertion portion, has a larger outer diameter than the circular top cover, and forms a second flange portion toward the outside, Includes, The second fixed end is either fitted onto the outer circumference of the second circular insertion portion or coupled below the circular base, and when the first circular insertion portion is inserted into the second circular groove, the top cover and the fitting base are coupled together in a removable manner by the magnetic force between the first magnet and the second magnet, and at the same time the end of the first circular insertion portion abuts against the bottom of the second circular groove.
[0007] The third circular groove extends downward into the circular base. The first and second magnets are cylindrical bodies, and their outer diameters are the same. The exposed surface of the first magnet is slightly recessed into the first circular insertion portion, or is flush with the end of the first circular insertion portion. When the second fixed end is fitted onto the outer circumference of the second circular insertion portion, the second flange portion prevents the second fixed end from falling out of the fitting base.
[0008] The present invention further provides another buckle, the buckle comprising a top cover and a mating base, The aforementioned top cover is The external appearance is cylindrical, with a first circular groove open in the center, and a first circular insertion part in which a first magnet is fixed, A circular top cover is connected to the upper center of the first circular insertion portion and forms a first flange portion toward the outside, The above the circular top cover is connected to the first fixed end, The aforementioned fitting base is, The external appearance is cylindrical, with a second circular groove open in the center, the inner diameter of the second circular groove being slightly larger than the outer diameter of the first circular insertion part, the depth of the second circular groove being greater than the height of the first circular insertion part, and the second magnet being fixed within the second circular groove, A circular base is connected to the lower center of the second circular insertion portion, has a larger outer diameter than the circular top cover, and forms a second flange portion toward the outside, Includes, The second fixed end is either fitted onto the outer circumference of the second circular insertion portion or coupled below the circular base, and when the first circular insertion portion is inserted into the second circular groove, the top cover and the fitting base are coupled together in a removable manner by the magnetic force between the first magnet and the second magnet, and at the same time the end of the first circular insertion portion abuts against the second magnet, and the end of the second circular insertion portion abuts against the first flange portion.
[0009] The second circular groove extends downward into the circular base. The first and second magnets are cylindrical, and the outer diameter of the second magnet is larger than the outer diameter of the first magnet. The exposed surface of the first magnet is either slightly recessed into the first circular insertion portion or flush with the end of the first circular insertion portion. When the second fixed end is fitted onto the outer circumference of the second circular insertion portion, the second flange portion prevents the second fixed end from falling out of the fitting base. [Effects of the Invention]
[0010] The design of the top cover and fitting base of the present invention allows the magnet to exert its magnetic force more effectively, resulting in smoother coupling between the top cover and the fitting base, requiring no force to insert or remove them, and fixing them together by magnetic force. Furthermore, the design of the second circular insertion portion allows the fixed end to be fitted to its outer circumference or coupled to the bottom of the circular base, thereby increasing the number of configurations for the joining member of the present invention and diversifying its applications. [Brief explanation of the drawing]
[0011] [Figure 1] This is a perspective view of the buckle in its connected state according to the first embodiment of the present invention. [Figure 2] This is a perspective view of the buckle when it is separated. [Figure 3] This is a cross-sectional view of the buckle when it is fastened. [Figure 4] This is a cross-sectional view of the buckle after it has been separated. [Figure 5] This is a cross-sectional view of another buckle according to a second embodiment of the present invention when it is fastened. [Figure 6] Figure 5 shows a disassembled cross-sectional view of the buckle when it is separated. [Figure 7] This figure shows one embodiment of the connection between the buckle and the fixed end of the present invention. [Figure 8] This diagram shows the state of connection between the buckle's top cover and the connecting aid. [Figure 9] This diagram shows the connection between the buckle's mating base and the connecting part. [Figure 10]It is a diagram showing how the buckle joins the joined object. [Figure 11] It is a diagram showing an application example of one aspect of the buckle.
Embodiments for Carrying Out the Invention
[0012] The present invention will be described more specifically by referring to the following embodiments.
[0013] Refer to FIGS. 1 to 4. FIG. 1 is a perspective view of the buckle 1 at the time of connection according to the first embodiment of the present invention, FIG. 2 is a perspective view of the buckle 1 at the time of separation, FIG. 3 is a cross-sectional view of the buckle 1 at the time of connection, and FIG. 4 is an exploded cross-sectional view of the buckle 1 at the time of separation. The structure of the buckle 1 includes an upper lid 10 and a fitting base 20, and these technical elements will be described in detail below.
[0014] The upper lid 10 includes a first circular insertion portion 11 and a circular top cover 12. The appearance of the first circular insertion portion 11 is a cylinder, and a first circular concave groove 111 is formed by opening in the center. A first magnet M1 is fixed in the first circular concave groove 111. Since the first magnet M1 can be fitted into the first circular concave groove 111, the outer shape of the first magnet M1 is also a cylinder. The exposed surface of the first magnet M1 can be slightly recessed into the first circular insertion portion 11 as shown in FIG. 3. Actually, the exposed surface of the first magnet M1 can also be flush with the end of the first circular insertion portion 11. The circular top cover 12 is connected above the center of the first circular insertion portion 11 and forms a first flange portion 121 outward. The upper part of the circular top cover 12 is flat and can be joined (for example, joined with an adhesive) to a first fixed end (not shown, the specific form will be described in subsequent examples). The first fixed end may be a part of the object to be joined or an auxiliary joining object used for the upper lid 10.
[0015] The fitting base 20 includes a second circular insertion portion 21 and a circular base 22. The second circular insertion portion 21 has a cylindrical appearance, with an open center forming a second circular groove 211. By design, the inner diameter of the second circular groove 211 is slightly larger than the outer diameter of the first circular insertion portion 11, and the depth of the second circular groove 211 is the same as or slightly smaller than the height of the first circular insertion portion 11. A third circular groove 2112 is formed in the center of the bottom 2111 of the second circular groove 211, and the second magnet M2 is fixed within the third circular groove 2112. The outer shapes of the second magnet M2 and the first magnet M1 are the same, both are cylindrical, and their outer diameters are the same. If their heights are also the same, then the second magnet M2 and the first magnet M1 are exactly the same magnet, but the present invention does not limit their heights. The exposed surface of the second magnet M2 may be slightly recessed within the third circular groove 2112 and may be flush with the surface of the bottom 2111. The circular base 22 is connected to the lower center of the second circular insertion portion 21, has a larger outer diameter than the circular top cover 12, and forms a second flange portion 221 facing outward. In this embodiment, because the height of the second magnet M2 is high, the third circular groove 2112 that accommodates it extends downward into the circular base 22 (the bottom of the third circular groove 2112 is located inside the circular base 22). If the height of the second magnet M2 is not high, the third circular groove 2112 may be formed only within the second circular insertion portion 21 and may not extend downward into the circular base 22.
[0016] For use, the second fixed end (not shown; a specific form will be described in subsequent examples) is fitted onto the outer circumference of the second circular insertion portion 21, or is coupled (for example, bonded with adhesive) to the bottom of the circular base 22. When the first circular insertion portion 11 is inserted into the second circular groove 211, the top cover 10 and the fitting base 20 are coupled in a removable manner by the magnetic force between the first magnet M1 and the second magnet M2. At this time, the end of the first circular insertion portion 11 abuts against the bottom 2111 of the second circular groove 211. When the second fixed end is fitted onto the outer circumference of the second circular insertion portion 21, the function of the second flange portion 221 is to prevent the second fixed end from falling off the fitting base 20.
[0017] Refer to Figures 5 and 6. Figure 5 is a cross-sectional view of another buckle 2 according to a second embodiment of the present invention when it is joined, and Figure 6 is an exploded cross-sectional view of the buckle 2 in Figure 5 when it is separated. The appearance of buckle 1 and buckle 2 when joined is the same, so it is not shown. The structure of buckle 2 includes the same top cover 10 as in the above embodiment and one different fitting base 30, and below only the technical features of the fitting base 30 will be described in detail.
[0018] The fitting base 30 includes a second circular insertion portion 31 and a circular base 32. The second circular insertion portion 31 has a cylindrical appearance with a second circular groove 311 opening in the center. The inner diameter of the second circular groove 311 is slightly larger than the outer diameter of the first circular insertion portion 11, but unlike the previous embodiment, the depth of the second circular groove 311 is greater than the height of the first circular insertion portion 11. The second magnet M2 is fixed inside the second circular groove 311. In this embodiment, the outer shapes of the second magnet M2 and the first magnet M1 are the same and are similarly cylindrical, but their outer diameters are different, with the outer diameter of the second magnet M2 being larger than the outer diameter of the first magnet M1. Similarly, in this embodiment, the heights of the two magnets are not limited. The circular base 32 is connected to the lower center of the second circular insertion portion 31 and has a larger outer diameter than the circular top cover 12, forming a second flange portion 321 facing outwards. In this embodiment, because the height of the second magnet M2 is high, the second circular groove 311 that accommodates it can extend downward into the circular base 32. If the height of the second magnet M2 is not high, the second circular groove 311 can only be formed within the second circular insertion portion 31.
[0019] For use, the second fixed end (not shown; a specific form will be described in subsequent examples) can be fitted onto the outer circumference of the second circular insertion portion 31 or coupled to the bottom of the circular base 32. When the first circular insertion portion 11 is inserted into the second circular groove 311, the top cover 10 and the fitting base 30 are coupled together in a removable manner by the magnetic force between the first magnet M1 and the second magnet M2. At this time, the end of the first circular insertion portion 11 is in direct contact with the second magnet M2, and the end of the second circular insertion portion 31 is in contact with the first flange portion 121, forming a flush joint. Similarly, if the second fixed end is fitted onto the outer circumference of the second circular insertion portion 31, the second flange portion 321 also serves to prevent the second fixed end from falling off the fitting base 30.
[0020] Refer to Figure 7. Using buckle 1 (and buckle 2 similarly) as an example, the figure shows one way in which buckle 1 and a fixed end are connected according to the present invention. The circular top cover 12 of the top flap 10 is connected to the left front body fabric C1 (first fixed end) of the shirt, and the circular base 22 of the fitting base 20 is connected to the right front body fabric C2 (second fixed end) of the shirt. In this application example, the top flap 10 and the fitting base 20 act as a male button and a female button, respectively, and what connects to the circular top cover 12 is the joining object itself that needs to be joined, not a joining aid that assists in joining.
[0021] Refer to Figures 8 to 10. These drawings illustrate another application of the buckle 1 of the present invention. Figure 8 shows the connection between the top cover 10 of the buckle 1 and the connecting aid C3, Figure 9 shows the connection between the fitting base 20 of the buckle 1 and the connecting part C4, and Figure 10 shows how the buckle 1 connects the connecting part C4. In Figure 8, the circular top cover 12 of the top cover 10 is connected to the connecting aid C3. The purpose of the connecting aid C3 is to extend the width of the first flange portion 121. In this example, the actual form of the connecting aid C3 is an ornament. In Figure 9, the connecting part C4 is a belt or strap, with circular openings O at both ends that are the same as the outer diameter of the second circular insertion portion 21, one of which is fitted onto the outer circumference of the second circular insertion portion 21, forming another use of the second fixed end described above. As can be seen in Figure 10, the purpose of the joint C4 is to connect the two shoulder straps B of the backpack, preventing the shoulder straps B from slipping and separating when the user puts on the backpack, and the joining aid C3 also serves a decorative function. After the joint C4 curves and encloses the two shoulder straps B inside, the second circular insertion part 21 then passes through another circular opening O and is inserted into the first circular insertion part 11. During use, as described above, the second flange part 221 can prevent the second fixed end from falling off the fitting base 20, but since the outer diameter of the first flange part 121 is the same as or slightly larger than the circular opening O, the second fixed end is likely to fall off the top cover 10, and in this case the joining aid C3 acts as a stopper. In this way, both ends of the joint C4 are joined, achieving the function of fixing the shoulder straps B.
[0022] In addition to the above examples of use, the buckle of the present invention can be applied to enhance the decoration of items such as necklaces, hanging ornaments, hanging ornaments, bags, eyeglasses, handbags, shoulder bags, bibs, clothing, trousers, slippers, sandals, shoes, hats, boots, and high heels. Figure 11 shows one application example of the buckle. The top cover 10 adheres to the ornament C5, and the lower part of the mating base 20 adheres to the upper C6 of the slipper. Through the connection between the top cover 10 and the mating base 20, the ornament C5 is attached to the upper C6 of the slipper. Since the top cover 10 is replaceable, the ornament C5 on the upper C6 of the slipper can have a different appearance while maintaining the original mating base 20 attached to the upper C6 of the slipper.
[0023] Although the present invention has been disclosed with embodiments as described above, this is not intended to limit the invention, and those skilled in the art can make some modifications and alterations without departing from the spirit and scope of the invention, and therefore the scope of protection of the present invention shall be as defined in the appended claims. [Explanation of Symbols]
[0024] 1 Buckle 10 Top lid 11. First circular insertion section 111 First circular groove 12 Circular Top Cover 121 First flange section 20 Fitting base 21 Second circular insertion section 211 Second circular groove 2111 Bottom 2112 Third circular groove 22 circular base 221 Second flange section 2 buckles 30 Fitting base 31. Second circular insertion section 311 Second circular groove 32 circular base 321 Second flange section B Shoulder strap C1 Left front panel fabric C2 Right front panel fabric C3 Joining aid C4 joint C5 Decorative items C6 slipper upper M1 First Magnet M2 2nd magnet O circular opening
Claims
1. Including the top cover and the fitting base, The aforementioned top cover is The external appearance is cylindrical, with a first circular groove open in the center, and a first circular insertion part in which a first magnet is fixed, A circular top cover is connected to the upper center of the first circular insertion portion and forms a first flange portion toward the outside, The above the circular top cover is connected to the first fixed end, The aforementioned fitting base is, The external appearance is cylindrical, with a second circular groove open in the center, the inner diameter of the second circular groove being slightly larger than the outer diameter of the first circular insertion part, the depth of the second circular groove being the same as or slightly smaller than the height of the first circular insertion part, and a third circular groove being formed in the center of the bottom of the second circular groove, the second magnet being fixed in the third circular groove, the second circular insertion part, A circular base is connected to the lower center of the second circular insertion portion, has a larger outer diameter than the circular top cover, and forms a second flange portion toward the outside, Includes, The second fixed end is either fitted onto the outer circumference of the second circular insertion portion or coupled below the circular base, and when the first circular insertion portion is inserted into the second circular groove, the top cover and the fitting base are coupled together in a removable manner by the magnetic force between the first magnet and the second magnet, and at the same time the end of the first circular insertion portion abuts against the bottom of the second circular groove. buckle.
2. The buckle according to claim 1, wherein the third circular groove extends downward into the circular base.
3. The buckle according to claim 1, wherein the first magnet and the second magnet are cylindrical bodies and have the same outer diameter.
4. The buckle according to claim 1, wherein the exposed surface of the first magnet is slightly recessed within the first circular insertion portion or is flush with the end of the first circular insertion portion.
5. The buckle according to claim 1, wherein when the second fixed end is fitted onto the outer circumference of the second circular insertion portion, the second flange portion prevents the second fixed end from falling off the fitting base.
6. Including the top cover and the fitting base, The aforementioned top cover is The external appearance is cylindrical, with a first circular groove open in the center, and a first circular insertion part in which a first magnet is fixed, A circular top cover is connected to the upper center of the first circular insertion portion and forms a first flange portion toward the outside, The above the circular top cover is connected to the first fixed end, The aforementioned fitting base is, The external appearance is cylindrical, with a second circular groove formed open in the center, the inner diameter of the second circular groove being slightly larger than the outer diameter of the first circular insertion part, the depth of the second circular groove being greater than the height of the first circular insertion part, and the second magnet being fixed within the second circular groove, A circular base is connected to the lower center of the second circular insertion portion, has a larger outer diameter than the circular top cover, and forms a second flange portion toward the outside, Includes, The second fixed end is either fitted onto the outer circumference of the second circular insertion portion or coupled below the circular base, and when the first circular insertion portion is inserted into the second circular groove, the top cover and the fitting base are coupled together in a removable manner by the magnetic force between the first magnet and the second magnet, and at the same time the end of the first circular insertion portion abuts against the second magnet, and the end of the second circular insertion portion abuts against the first flange portion. buckle.
7. The buckle according to claim 6, wherein the second circular groove extends downward into the circular base.
8. The buckle according to claim 6, wherein the first magnet and the second magnet are cylindrical bodies, and the outer diameter of the second magnet is greater than the outer diameter of the first magnet.
9. The buckle according to claim 6, wherein the exposed surface of the first magnet is slightly recessed within the first circular insertion portion or is flush with the end of the first circular insertion portion.
10. The buckle according to claim 6, wherein the second flange portion prevents the second fixed end from falling off the fitting base when the second fixed end is fitted onto the outer circumference of the second circular insertion portion.