A snap-fit structure for magnetic building blocks
By designing a snap-fit structure, including cover I and cover II, a magnetic encapsulation part, a positioning insert, and a sleeve with a self-locking design, the problems of unstable encapsulation and easy disassembly of magnetic building blocks are solved, achieving safe and durable magnetic building block connection, suitable for safe use in places such as kindergartens.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 鲁香君
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-03
AI Technical Summary
The magnets in existing magnetic building blocks are not securely encapsulated, posing a safety hazard. Furthermore, the snap-fit structure is easily disassembled, which may cause the magnets to fall off, posing a risk of accidental ingestion by children. This is especially unsafe for use in settings such as kindergartens.
It adopts a snap-fit structure, including cover body I and cover body II, magnet encapsulation part, positioning pin, deformation part and sleeve. The positioning pin is inserted into the sleeve and self-locking is achieved through the locking groove to form a closed cavity to prevent the magnet from falling off. It is also designed with rounded corners to improve safety.
It achieves a stable and non-disassembly magnetic block connection, preventing magnets from falling off, improving safety, and is suitable for places such as kindergartens to prevent children from accidentally swallowing them. It is also suitable for modular assembly of large building blocks.
Smart Images

Figure CN224442143U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of children's magnetic building block toys, and in particular to a snap-fit structure for magnetic building blocks. Background Technology
[0002] Most existing magnetic building blocks are assembled by embedding magnets into the block shell structure. However, the magnet encapsulation method used in some products is not secure, and the magnets may fall off due to drops or collisions, posing a safety hazard. In scenarios such as kindergartens, the use of magnetic building blocks requires more attention to structural stability. At the same time, most existing snap-fit structures are detachable, which cannot effectively prevent children from accidentally disassembling or swallowing them. Utility Model Content
[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a snap-fit structure for magnetic building blocks that is structurally stable, highly secure, easy to install, and not easily disassembled.
[0004] A snap-fit structure for magnetic building blocks includes a cover I and a cover II; the snap-fit structure further includes:
[0005] Two magnet encapsulation parts;
[0006] Three positioning pins are fixedly installed on the cover II;
[0007] The deformable part is fixed at the end of the corresponding positioning pin;
[0008] A sleeve adapted to the corresponding positioning pin is fixedly connected to the cover I; and
[0009] A locking groove is formed through the sleeve wall.
[0010] As a further improvement to the above solution, two building block bodies are assembled into a building block module through a snap-fit structure, with cover I fixedly installed on one of the building block bodies and cover II fixedly installed on the remaining building block body.
[0011] As a further improvement to the above solution, the cover I is located above the cover II, and the edges of both the cover I and the cover II are rounded.
[0012] As a further improvement to the above scheme, three positioning pins are arranged around the magnet encapsulation part.
[0013] As a further improvement to the above solution, the deformable part is fastened to the corresponding sleeve by a locking groove.
[0014] As a further improvement to the above solution, the buckle structure also includes two positioning blocks, which are fixed on both sides of the cover II respectively.
[0015] As a further improvement to the above solution, when cover I and cover II are in the connected state, the lower edge of cover I and the upper edge of cover II abut and engage between the two positioning blocks.
[0016] As a further improvement to the above solution, one of the magnet encapsulation parts is fixed at the position of cover I facing cover II, and a neodymium iron boron magnet block I is fixedly installed inside the magnet encapsulation part.
[0017] As a further improvement to the above solution, the remaining magnet encapsulation part is fixed at the position of cover II facing cover I, and a neodymium iron boron magnet block II is fixedly installed inside the magnet encapsulation part.
[0018] As a further improvement to the above scheme, neodymium iron boron magnet I and neodymium iron boron magnet II are magnetically attracted to each other.
[0019] As a further improvement to the above solution, when the positioning pin is inserted into the corresponding sleeve and the deformed part is exposed in the locking groove, cover I and cover II are in a connected state. At this time, the two magnet encapsulation parts abut against each other and form a closed cavity.
[0020] Compared with the prior art, the beneficial effects of this utility model are: the snap-fit structure, as a connector, is suitable for the modular assembly of large building block structures. The assembled building block module has a stable structure and good anti-disassembly effect, which overcomes the safety hazard of magnets falling off due to falling or collision of building block modules, avoids children from accidentally swallowing them, is safer and more durable, and is more suitable for safe use in places such as kindergartens, educational institutions, and public play areas. Attached Figure Description
[0021] Figure 1 The diagram shown is a snap-fit structure for a magnetic building block provided by this utility model.
[0022] Figure 2 As shown Figure 1 Disassembly diagram.
[0023] Explanation of main component symbols
[0024] 1. Cover I; 2. Cover II; 3. Magnet encapsulation part; 4. Positioning block; 5. Positioning insert; 6. Deformation part; 7. Sleeve; 8. Locking groove.
[0025] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a further detailed explanation of this utility model. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. Additional aspects and advantages of this utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. It should be understood that the following description is merely illustrative and not intended to limit the utility model.
[0027] The specific embodiments of this utility model are described in detail below.
[0028] Please see Figure 1-2 This embodiment provides a snap-fit structure for magnetic building blocks, which includes a cover body I1, a cover body II2, two magnet encapsulation parts 3, two positioning blocks 4, three positioning pins 5 fixedly installed on the cover body II2, a deformation part 6 fixed at the end of the corresponding positioning pin 5, a sleeve 7 adapted to the corresponding positioning pin 5, and a locking groove 8 through the sleeve 7.
[0029] The cover I1 is located above the cover II2, and both the cover I1 and the cover II2 have rounded edges. In this embodiment, both the cover I1 and the cover II2 are injection molded ABS plastic parts. The rounded edge design makes the edges of the cover I1 and the cover II2 smooth, so as to ensure the safety of children.
[0030] One of the magnet encapsulation parts 3 is fixed at the position of cover I1 facing cover II2, and a neodymium iron boron magnet block I is fixedly installed inside the magnet encapsulation part 3. The remaining magnet encapsulation part 3 is fixed at the position of cover II2 facing cover I1, and a neodymium iron boron magnet block II is fixedly installed inside the magnet encapsulation part 3. The neodymium iron boron magnet block I and the neodymium iron boron magnet block II are magnetically attracted to each other. When the positioning pin 5 is inserted into the corresponding sleeve 7 until the deformation part 6 protrudes from the locking groove 8, cover I1 and cover II2 are in a connected state. At this time, the two magnet encapsulation parts 3 abut against each other and form a closed cavity.
[0031] Two positioning blocks 4 are fixed on both sides of the cover II2. When the cover I1 and cover II2 are connected, the lower edge of cover I1 and the upper edge of cover II2 abut and engage between the two positioning blocks 4. In this embodiment, the two positioning blocks 4 ensure stable engagement of the edges, improving the alignment and fit of the snap-fit structure during assembly.
[0032] Three positioning pins 5 are arranged around the magnet encapsulation part 3. The sleeve 7 is fixedly connected to the cover I1. The deformable part 6 is fastened to the corresponding sleeve 7 through the locking groove 8. In this embodiment, the positioning pins 5, the deformable part 6 made of plastic, the sleeve 7 and the locking groove 8 are used in a fastening design to achieve structural self-locking, so that the buckle structure cannot be easily opened after being fastened, thereby achieving the effect of preventing accidental disassembly and effectively preventing the risk of children accidentally swallowing the magnets, thus improving the safety of using magnetic building blocks. The specific fastening process is as follows: the positioning pins 5 are inserted into the corresponding sleeves 7 until the deformable part 6 is exposed in the locking groove 8 to achieve compression. At this time, the positioning pins 5 and the sleeves 7 are in a firm connection state, and due to the restriction of the deformable part 6 by the locking groove 8, the buckle structure in the connection state cannot be easily disassembled without damaging the structure. The neodymium iron boron magnet block I and neodymium iron boron magnet block II are always in the closed cavity formed by the two magnet encapsulation parts 3, thereby effectively preventing the magnets from falling off.
[0033] Two building block bodies are assembled into a building block module via a snap-fit structure. Cover I1 is fixedly installed on one of the building block bodies, and cover II2 is fixedly installed on the remaining building block body. The snap-fit structure designed in this embodiment serves as a connector, suitable for modular assembly of large building block structures, such as those with a side length of 33cm or larger. The assembled building block module is structurally stable, has good anti-disassembly properties, overcomes the safety hazard of magnets falling off due to drops or collisions, prevents children from accidentally swallowing the blocks, and is relatively safe and durable, making it more suitable for use in kindergartens, educational institutions, public play areas, and similar locations.
[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A snap-fit structure for magnetic building blocks, comprising cover I (1) and cover II (2); characterized in that The snap-fit structure also includes: Two magnet encapsulation parts (3); Three positioning pins (5) are fixedly installed on the cover II (2); The deformable part (6) is fixed at the end of the corresponding positioning pin (5); A sleeve (7) adapted to the corresponding positioning pin (5) is fixedly connected to the cover I (1); and A locking groove (8) is formed through the sleeve (7) wall.
2. The magnetic building block snap structure of claim 1, wherein, Two building blocks are assembled into a building block module through a snap-fit structure. Cover I (1) is fixedly installed on one of the building blocks, and cover II (2) is fixedly installed on the remaining building block.
3. The magnetic building block snap structure of claim 2, wherein, The cover I (1) is located above the cover II (2), and the edges of both the cover I (1) and the cover II (2) are rounded.
4. The magnetic building block snap structure of claim 1, wherein, Three positioning pins (5) are arranged around the magnet encapsulation part (3).
5. The magnetic building block snap structure of claim 1, wherein, The deformable part (6) is fastened to the corresponding sleeve (7) through the locking groove (8).
6. The magnetic building block snap structure of claim 1, wherein, The buckle structure also includes two positioning blocks (4), which are fixed on both sides of the cover II (2).
7. The magnetic building block snap structure of claim 6, wherein, When cover I (1) and cover II (2) are connected, the lower edge of cover I (1) and the upper edge of cover II (2) abut and engage between the two positioning blocks (4).
8. The snap-fit structure of the magnetic building blocks according to claim 1, characterized in that, One of the magnet encapsulation parts (3) is fixed at the position of the cover I (1) facing the cover II (2), and a neodymium iron boron magnet block I is fixedly installed inside the magnet encapsulation part (3); The remaining magnet encapsulation part (3) is fixed at the position of cover II (2) facing cover I (1), and a neodymium iron boron magnet block II is fixedly installed inside the magnet encapsulation part (3).
9. The magnetic building block snap structure of claim 8, wherein, Neodymium iron boron magnet I and Neodymium iron boron magnet II are magnetically attracted to each other.
10. The magnetic building block snap structure according to claim 1 or 9, wherein When the positioning pin (5) is inserted into the corresponding sleeve (7) and the deformation part (6) is exposed in the locking groove (8), the cover I (1) and cover II (2) are connected. At this time, the two magnet encapsulation parts (3) abut against each other and form a closed cavity.