Circuit board fixing pin and building block toy
By designing circuit board fixing pins, the problem of needing tools to install and remove circuit boards in LEGO bricks was solved, achieving convenience and stability, while hiding the circuit boards and improving aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-03-17
AI Technical Summary
In the existing technology, circuit boards require tools during the assembly or disassembly of Lego bricks, which affects convenience. Furthermore, the circuit boards are easily exposed, affecting aesthetics and making them susceptible to damage.
Design a circuit board fixing pin, including a first insertion part and a limiting part, which can be snapped into the circuit board and building block module to achieve detachable fixing, avoid tool loading and unloading, improve convenience, and enhance connection stability through anti-rotation ribs and limiting flanges.
It enables the circuit board and building block modules to be detachably fixed, improving the convenience of assembly and disassembly, enhancing connection stability, hiding the circuit board to prevent damage, and improving the overall aesthetics.
Smart Images
Figure CN223995399U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building block accessories technology, and in particular to a circuit board fixing pin and a building block toy. Background Technology
[0002] With the popularization of automation and programming technologies, the integration of automation and programming technologies with modular and connectable LEGO bricks has become a development trend for LEGO bricks.
[0003] Integrating automation and programming technologies with LEGO bricks inevitably requires the assembly and fixing of circuit boards (PCBs) with the brick modules. However, current circuit boards are typically secured to the brick modules using screws, which means that tools are needed to install or remove the circuit boards during LEGO brick assembly or disassembly, greatly affecting the convenience of LEGO brick assembly and disassembly.
[0004] Furthermore, after the circuit board is locked to the building block module by screws, it is difficult for the circuit board to connect to other building block modules on the side of the circuit board opposite to the building block module that is locked by the screws. This usually exposes one side of the assembled building block toy, which not only affects the overall aesthetics of the building block toy, but also makes the circuit board very easy to be damaged during the use of the building block toy. Utility Model Content
[0005] The purpose of this application is to provide a circuit board fixing pin and a building block toy, so as to solve to some extent the technical problem in the prior art that the installation and removal of circuit boards during the assembly or disassembly of LEGO bricks requires the use of tools, which greatly affects the convenience of LEGO brick assembly and disassembly.
[0006] According to a first aspect of this application, a circuit board fixing pin is provided for fixing a circuit board to a building block assembly. The circuit board fixing pin includes a first insertion portion and a limiting portion connected sequentially along a first direction. The diameter of the limiting portion is larger than the diameter of the first insertion portion.
[0007] The building block assembly includes a first building block module, and the first plug-in portion can penetrate the circuit board and the first building block module along the first direction and snap into the first building block module, wherein the first direction is perpendicular to the circuit board.
[0008] Preferably, the circuit board fixing pin satisfies: L1=(8n+t)mm;
[0009] Where L1 is the dimension of the first plug-in portion in the first direction, t is the dimension of the circuit board in the first direction, and n is a positive integer.
[0010] Preferably, the circuit board fixing pin further includes a second insertion portion, which is connected to the end of the limiting portion away from the first insertion portion, and the diameter of the limiting portion is larger than the diameter of the second insertion portion;
[0011] The building block assembly also includes a second building block module, wherein the second plug-in portion can penetrate the second building block module along the first direction and engage with the second building block module.
[0012] Preferably, it further includes:
[0013] The first anti-rotation rib is disposed on the outer side wall of the first insertion part, and the first insertion part is interference-fitted with the circuit board and / or the first building block module via the first anti-rotation rib.
[0014] And / or, a first limiting flange is disposed at the end of the first insertion portion away from the limiting portion, and the first insertion portion is engaged with the first building block module via the first limiting flange.
[0015] Preferably, it includes at least two sets of first anti-rotation structures, each set of first anti-rotation structures including a plurality of first anti-rotation ribs;
[0016] In the same group of first anti-rotation structures, multiple first anti-rotation ribs are spaced apart along the circumferential direction of the first insertion part;
[0017] At least two sets of first anti-rotation structures are spaced apart along the first direction, and two of the at least two sets of first anti-rotation structures are respectively disposed at both ends of the first insertion portion in the first direction.
[0018] Preferably, it further includes:
[0019] The second anti-rotation rib is disposed on the outer side wall of the second insertion part, and the second insertion part is interference-fitted with the second building block module via the second anti-rotation rib.
[0020] And / or, a second limiting flange is disposed at the end of the second insertion portion away from the limiting portion, and the second insertion portion is engaged with the second building block module via the second limiting flange.
[0021] Preferably, it includes at least two sets of second anti-rotation structures, each set of second anti-rotation structures including a plurality of second anti-rotation ribs;
[0022] In the same group of second anti-rotation structures, multiple second anti-rotation ribs are arranged at intervals along the circumferential direction of the second insertion portion;
[0023] At least two sets of second anti-rotation structures are spaced apart along the first direction, and two of the at least two sets of second anti-rotation structures are respectively disposed at both ends of the second plug portion in the first direction.
[0024] Preferably, the first insertion part, the limiting part, and the second insertion part are integrally formed.
[0025] The circuit board retaining pin is cylindrical.
[0026] Preferably, it further includes:
[0027] A first deformation notch is provided at one end of the first insertion portion away from the limiting portion, and the first deformation notch is formed open at the end of the first insertion portion away from the limiting portion, and the first deformation notch penetrates the first insertion portion along the second direction;
[0028] The second deformation notch is provided at one end of the second plug portion away from the limiting portion, and the second deformation notch is formed open at the end of the second plug portion away from the limiting portion, and the second deformation notch penetrates the second plug portion along the second direction;
[0029] The first deformable hollow portion penetrates the circuit board fixing pin along a third direction, and the first deformable hollow portion extends from the limiting portion to the first insertion portion along the first direction.
[0030] The second deformable hollow portion penetrates the circuit board fixing pin along a third direction, and the second deformable hollow portion extends from the limiting portion to the second insertion portion along the first direction.
[0031] The second direction intersects with the third direction, and the first direction is perpendicular to the plane defined by the second direction and the third direction.
[0032] According to a second aspect of this application, a building block toy is provided, comprising the aforementioned circuit board, building block assembly, and circuit board fixing pin as described in any of the above technical solutions, thus possessing all the beneficial technical effects of the circuit board fixing pin, which will not be elaborated here.
[0033] Compared with the prior art, the beneficial effects of this application are as follows:
[0034] The circuit board fixing pin provided in this application connects a first plug-in portion that can penetrate the circuit board and the first building block module along the first direction and engage with the first building block module, and a limiting portion with a diameter larger than the first plug-in portion, in sequence along the first direction. Thus, with the first plug-in portion penetrating the circuit board and the first building block module, the circuit board can be limited between the first building block module and the connecting portion, thereby achieving detachable fixing of the circuit board and the building block assembly. This avoids the need to use tools to load and unload the circuit board during the assembly and disassembly of the building blocks, and improves the ease of loading and unloading the circuit board.
[0035] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0036] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0037] Figure 1 This is an isometric structural diagram of the circuit board fixing pin provided in an embodiment of this application;
[0038] Figure 2 This is a schematic diagram of the exploded structure of a building block toy provided in an embodiment of this application;
[0039] Figure 3 This is a partial cross-sectional structural diagram of the building block toy provided in the embodiments of this application;
[0040] Figure 4 This is an isometric structural diagram of a building block toy provided in an embodiment of this application.
[0041] Figure label:
[0042] 1-Circuit board fixing pin; 11-First insertion part; 111-First anti-rotation rib; 112-First limiting flange; 113-First deformation notch; 12-Second insertion part; 121-Second anti-rotation rib; 122-Second limiting flange; 123-Second deformation notch; 13-Limiting part; 131-First deformation hollow part; 132-Second deformation hollow part; 21-First building block module; 22-Second building block module; 3-Circuit board.
[0043] F1 - First direction; F2 - Second direction; F3 - Third direction. Detailed Implementation
[0044] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.
[0045] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.
[0046] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0047] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0049] The following reference Figures 1 to 4 This application describes a circuit board retaining pin 1 and a building block toy according to some embodiments.
[0050] See Figures 1 to 4 As shown, an embodiment of the first aspect of this application provides a circuit board fixing pin 1 for fixing a circuit board 3 to a building block assembly. The circuit board fixing pin 1 includes a first insertion portion 11 and a limiting portion 13 connected sequentially along a first direction F1. The diameter of the limiting portion 13 is larger than the diameter of the first insertion portion 11. The building block assembly includes a first building block module 21. The first insertion portion 11 can penetrate the circuit board 3 and the first building block module 21 along the first direction F1 and engage with the first building block module 21. The first direction F1 is perpendicular to the circuit board 3.
[0051] According to the circuit board fixing pin 1 provided by the above technical features, by connecting the first plug-in part 11, which can pass through the circuit board 3 and the first building block module 21 along the first direction F1 and engage with the first building block module 21, to the limiting part 13, which has a diameter larger than the first plug-in part 11, in the first direction F1, the circuit board 3 can be limited between the first building block module 21 and the connecting part when the first plug-in part 11 passes through the circuit board 3 and the first building block module 21, the circuit board 3 can be detachably fixed to the building block assembly, avoiding the need to use tools to load and unload the circuit board 3 during the assembly and disassembly of the building blocks, thus improving the ease of loading and unloading the circuit board 3.
[0052] like Figures 1 to 4 As shown in the figure, F1 can be an example of the first direction F1 described above, F2 can be an example of the second direction F2 described above, and F3 can be an example of the third direction F3 described above. The second direction F2 can intersect with the third direction F3, and the first direction F1 can intersect the plane defined by both the second direction F2 and the third direction F3. Preferably, the second direction F2 is perpendicular to the third direction F3, and the first direction F1 is perpendicular to the plane defined by both the second direction F2 and the third direction F3.
[0053] Preferably, such as Figure 1 and Figure 3 As shown, the aforementioned circuit board fixing pin 1 satisfies: L1 = (8n + t) mm, where L1 is the dimension of the first insertion part 11 in the first direction F1, t is the dimension of the circuit board 3 in the first direction F1 (i.e., the thickness of the circuit board 3), and n is a positive integer. Typically, the thickness of building blocks in modern building block toys is 8 mm or a multiple of 8 mm. For example... Figure 3 As shown in the figure, the first building block module 21 described above includes an example of one layer of building blocks, i.e., L1 = (8+t)mm. However, it is not limited to this. The first building block module 21 described above may also include two layers of building blocks, three layers of building blocks, four layers of building blocks...n layers of building blocks to adapt to the first building block module 21 with different structures.
[0054] like Figure 2 and Figure 4 As shown in the figure, the first building block module 21 is an example of a ring beam module. However, it is not limited to this. As long as it can be plugged into the first plug-in part 11, the first building block module 21 can also be other structures, such as a straight arm beam module, a steering beam module, or other building block modules.
[0055] Preferably, such as Figure 1 and Figure 3As shown, the circuit board fixing pin 1 may include a first limiting flange 112, which may be disposed at the end of the first insertion part 11 away from the limiting part 13. The first insertion part 11 is engaged with the first building block module 21 via the first limiting flange 112.
[0056] Preferably, such as Figure 1 As shown, the first limiting flange 112 can be continuously provided along the edge of the end of the first insertion portion 11 away from the limiting portion 13, so as to improve the snapping stability of the first limiting flange 112 and the first building block module 21.
[0057] Preferably, such as Figure 1 As shown, the circuit board fixing pin 1 may include a first anti-rotation rib 111. The first anti-rotation rib 111 is disposed on the outer side wall of the first insertion part 11. The first insertion part 11 is press-fitted with the circuit board 3 and / or the first building block module 21 via the first anti-rotation rib 111, thereby improving the connection stability between the circuit board fixing pin 1 and the circuit board 3 and / or the first building block module 21.
[0058] Optionally, such as Figure 1 As shown, the first anti-rotation rib 111 can be a long strip-shaped rib extending along the first direction F1 to increase the contact area between the first anti-rotation rib 111 and the circuit board 3 and / or the first building block module 21. However, it is not limited to this, the first anti-rotation rib 111 can also be other forms of ribs, such as hemispherical, semi-ellipsoidal, polygonal or other irregular protrusions.
[0059] Preferably, such as Figure 1 As shown, the circuit board fixing pin 1 may include two sets of first anti-rotation structures, and each set of first anti-rotation structures may include multiple first anti-rotation ribs 111. In the same set of first anti-rotation structures, the multiple first anti-rotation ribs 111 are spaced apart along the circumferential direction of the first insertion portion 11 to ensure the stability of the distribution of the first anti-rotation ribs 111 in the circumferential direction of the first insertion portion 11.
[0060] Preferably, such as Figure 1 As shown, two sets of first anti-rotation structures can be respectively set at both ends of the first plug-in part 11 in the first direction F1, so as to ensure that the circuit board 3 and the first plug-in part 11 and the first building block module 21 and the first plug-in part 11 are both provided with first anti-rotation structures, thereby ensuring that the first plug-in part 11 is interference-fitted with the circuit board 3 and the first building block module 21 through the first anti-rotation protrusion 111, preventing the circuit board fixing pin 1 from rotating relative to the circuit board 3 and the first building block module 21.
[0061] However, this is not the only limitation. The circuit board fixing pin 1 described above is not limited to the example of two sets of first anti-rotation structures. The number of first anti-rotation structures can be adaptively adjusted according to the size of the first insertion part 11 in the first direction F1. The number of first anti-rotation structures can also be adaptively adjusted according to the number of layers of the first building block module 21 (that is, each layer in the first building block module 21 corresponds to at least one first anti-rotation structure).
[0062] Preferably, such as Figure 1 As shown, the first insertion part 11, the first limiting flange 112, the first anti-rotation structure and the limiting part 13 can be an integral injection molded part.
[0063] Preferably, such as Figure 1 As shown, the circuit board fixing pin 1 may also include a first deformation notch 113. The first deformation notch may be provided at one end of the first insertion part 11 away from the limiting part 13, and the first deformation notch 113 is formed open at the end of the first insertion part 11 away from the limiting part 13 to increase the deformation capability of the first insertion part 11 so that the first insertion part 11 can pass through the circuit board 3 and the first building block module 21.
[0064] Preferably, such as Figure 1 As shown, the circuit board fixing pin 1 may further include a first deformable hollow portion 131. The first deformable hollow portion 131 extends from the limiting portion 13 to the first insertion portion 11 along the first direction F1. The first deformable hollow portion 131 penetrates the circuit board fixing pin 1 along the third direction F3 so that the internal stress generated inside the circuit board fixing pin 1 can be released from the first deformable hollow portion, thereby ensuring the stability of the circuit board fixing pin 1.
[0065] Preferably, such as Figure 1 As shown, the second direction F2 is perpendicular to the third direction F3. In other words, the penetration direction of the first deformable hollow part is perpendicular to the penetration direction of the first deformable notch, so as to ensure the bending strength of the circuit board fixing pin 1 which is simultaneously provided with the first deformable hollow part and the first deformable notch.
[0066] In an embodiment, preferably, such as Figures 1 to 4 As shown, the circuit board fixing pin 1 may further include a second insertion part 12, which is connected to the end of the limiting part 13 away from the first insertion part 11, and the diameter of the limiting part 13 is larger than the diameter of the second insertion part 12. The building block assembly also includes a second building block module 22, through which the second insertion part 12 can pass along the first direction F1 and engage with the second building block module 22. In this way, the second insertion part 12 can effectively improve the assemblability of the side of the circuit board 3 facing away from the first building block module 21, and the circuit board 3 is hidden by the second building block module 22, ensuring the safety and anti-touch properties of the circuit board 3.
[0067] Preferably, such as Figure 1 and Figure 3 As shown, the second insertion part 12 has a dimension L2 = (8y) mm in the first direction F1, where y can be a positive integer. Typically, the thickness of building blocks in modern building block toys is 8 mm or a multiple of 8 mm. For example... Figure 3 As shown in the figure, the second building block module 22 described above includes an example of one layer of building blocks, i.e., L2 = 8mm. However, it is not limited to this. The second building block module 22 described above may also include two layers of building blocks, three layers of building blocks, four layers of building blocks...y layers of building blocks to adapt to second building block modules 22 with different structures.
[0068] Similarly, such as Figures 1 to 3 As shown, the circuit board fixing pin 1 may further include a second anti-rotation rib 121, which is disposed on the outer side wall of the second insertion part 12. The second insertion part 12 is press-fitted with the second building block module 22 via the second anti-rotation rib 121 to improve the connection stability between the second insertion part 12 and the second building block module 22. Figures 1 to 3 As shown, the second anti-rotation rib 121 is similar in its setting method and structure to the first anti-rotation rib 111 described above, and will not be repeated here.
[0069] Similarly, such as Figures 1 to 3 As shown, the circuit board fixing pin 1 may further include a second limiting flange 122. The second limiting flange 122 may be disposed at the end of the second insertion part 12 away from the limiting part 13. The second insertion part 12 is engaged with the second building block module 22 via the second limiting flange 122, thereby realizing the engagement of the second insertion part 12 and the second building block module 22. Figures 1 to 3 As shown, the second limiting flange 122 is similar in its setting method and structure to the first limiting flange 112 mentioned above, and will not be described again here.
[0070] Similarly, such as Figures 1 to 3 As shown, the circuit board fixing pin 1 may include two sets of second anti-rotation structures, and each set of second anti-rotation structures may include multiple second anti-rotation ribs 121. In the same set of second anti-rotation structures, the multiple second anti-rotation ribs 121 are spaced apart along the circumferential direction of the second insertion portion 12 to ensure the stability of the distribution of the second anti-rotation ribs 121 in the circumferential direction of the second insertion portion 12.
[0071] Preferably, such as Figure 1 As shown, the two sets of second anti-rotation structures can be respectively set at both ends of the second plug-in part 12 in the first direction F1 to ensure the plug-in stability between the second plug-in part 12 and the second building block module 22 and prevent the circuit board fixing pin 1 from rotating relative to the second building block module 22.
[0072] However, this is not the only limitation. The circuit board fixing pin 1 described above is not limited to the example of two sets of second anti-rotation structures. The number of second anti-rotation structures can be adaptively adjusted according to the size of the second insertion part 12 in the first direction F1. The number of second anti-rotation structures can also be adaptively adjusted according to the number of layers of the second building block module 22 (that is, each layer in the second building block module 22 corresponds to at least one second anti-rotation structure).
[0073] Preferably, such as Figure 1 As shown, the second insertion part 12, the second limiting flange 122, the second anti-rotation structure, the limiting part 13, the first insertion part 11, the first limiting flange 112, the first anti-rotation structure, and the first insertion part 11 can be an integral injection molded part.
[0074] Preferably, such as Figure 1 As shown, the circuit board fixing pin 1 may also include a second deformation notch 123. The second deformation notch may be provided at one end of the second insertion part 12 away from the limiting part 13, and the second deformation notch 123 is formed open at the end of the second insertion part 12 away from the limiting part 13 to increase the deformation capability of the second insertion part 12 so that the second insertion part 12 can pass through the second building block module 22.
[0075] Preferably, such as Figure 1 As shown, the circuit board fixing pin 1 may also include a second deformable hollow portion 132. The second deformable hollow portion 132 extends from the limiting portion 13 to the second insertion portion 12 along the first direction F1. The second deformable hollow portion 132 penetrates the circuit board fixing pin 1 along the third direction F3 so that the internal stress generated inside the circuit board fixing pin 1 can be released from the second deformable hollow portion, thereby ensuring the stability of the circuit board fixing pin 1.
[0076] Similarly, the arrangement of the second deformable hollow portion 132 and the second deformable notch is similar to that of the first deformable hollow portion 131 and the first deformable notch, and will not be described again here.
[0077] Preferably, such as Figure 1 and Figure 4 As shown, the circuit board fixing pin 1 can be cylindrical. On the one hand, the hollow structure of the cylinder can effectively reduce the weight and manufacturing cost of the circuit board fixing pin 1; on the other hand, it can effectively improve the deformation capacity of the first insertion part 11 and the second insertion part 12, so as to facilitate the assembly of the circuit board fixing pin 1.
[0078] The second aspect of this application also provides a building block toy, including the circuit board 3, the building block assembly, and the circuit board fixing pin 1 described in any of the above embodiments. Therefore, it has all the beneficial technical effects of the circuit board fixing pin 1, which will not be repeated here.
[0079] Optionally, the building block assembly may include the first building block module 21, the second building block module 22, and a plurality of the circuit board fixing pins 1.
[0080] like Figure 4 As shown in the figure, the first building block module 21 and the second building block module 22 can both be ring beams. Multiple circuit board fixing pins 1 can be evenly distributed along the circumferential direction of the circuit board 3, and each circuit board fixing pin 1 is respectively engaged with the first building block module 21 and the second building block module 22 to ensure the stability of the circuit board 3.
[0081] However, it is not limited to this. The first building block module 21 and the second building block module 22 are not limited to the example of the ring beam. The first building block module 21 and the second building block module 22 can also be straight arm beam modules, steering beam modules or other building block modules.
[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A circuit board fixing pin characterized by comprising: The circuit board fixing pin is used for fixing a circuit board and a building block assembly, and comprises a first insertion part and a limiting part connected in sequence in a first direction, wherein the limiting part has a diameter larger than that of the first insertion part; The building block assembly comprises a first building block module, the first insertion part can penetrate through the circuit board and the first building block module in the first direction, and is clamped with the first building block module, and the first direction is perpendicular to the circuit board.
2. The circuit board fixing pin according to claim 1, wherein the circuit board fixing pin satisfies L1 = (8n + t) mm; wherein L1 is the size of the first insertion part in the first direction, t is the size of the circuit board in the first direction, and n is a positive integer.
3. The circuit board fixing pin according to claim 1 or 2, wherein the circuit board fixing pin further comprises a second insertion part, the second insertion part is connected with one end of the limiting part away from the first insertion part, and the diameter of the limiting part is larger than that of the second insertion part; The building block assembly further comprises a second building block module, the second insertion part can penetrate through the second building block module in the first direction, and is clamped with the second building block module. Further comprising: a first rotation-stopping protrusion provided on the outer sidewall of the first insertion part, the first insertion part is in interference fit with the circuit board and / or the first building block module via the first rotation-stopping protrusion; 4. The circuit board retaining pin of claim 1 wherein, and / or, a first limiting flange provided on the end of the first insertion part away from the limiting part, the first insertion part is clamped with the first building block module via the first limiting flange. Each group of the first rotation-stopping structure comprises a plurality of the first rotation-stopping protrusions; In the same group of the first rotation-stopping structure, the plurality of the first rotation-stopping protrusions are arranged at intervals along the circumferential direction of the first insertion part; 5. The circuit board retaining pin of claim 4, wherein At least two groups of the first rotation-stopping structure are arranged at intervals in the first direction, and two of the at least two groups of the first rotation-stopping structure are respectively arranged at two ends of the first insertion part in the first direction. Further comprising: a second rotation-stopping protrusion provided on the outer sidewall of the second insertion part, the second insertion part is in interference fit with the second building block module via the second rotation-stopping protrusion; 6. The circuit board retaining pin of claim 3 wherein: and / or, a second limiting flange provided on the end of the second insertion part away from the limiting part, the second insertion part is clamped with the second building block module via the second limiting flange. Each group of the second rotation-stopping structure comprises a plurality of the second rotation-stopping protrusions; In the same group of the second rotation-stopping structure, the plurality of the second rotation-stopping protrusions are arranged at intervals along the circumferential direction of the second insertion part; 7. The circuit board retaining pin of claim 6 wherein, At least two groups of the second rotation-stopping structure are arranged at intervals in the first direction, and two of the at least two groups of the second rotation-stopping structure are respectively arranged at two ends of the second insertion part in the first direction.
8. The circuit board fixing pin according to claim 3, wherein the first insertion part, the limiting part and the second insertion part are integrally formed; The circuit board fixing pin is in a cylindrical shape. Further comprising: 9. The circuit board retaining pin of claim 3 wherein, A first deformation gap is arranged at one end of the first insertion part away from the limiting part, and the first deformation gap is open at the end of the first insertion part away from the limiting part, and the first deformation gap penetrates the first insertion part along a second direction; A second deformation gap is arranged at one end of the second insertion part away from the limiting part, and the second deformation gap is open at the end of the second insertion part away from the limiting part, and the second deformation gap penetrates the second insertion part along a second direction; A first deformation hollow part penetrates the circuit board fixing pin along a third direction, and the first deformation hollow part extends from the limiting part to the first insertion part along the first direction; A second deformation hollow part penetrates the circuit board fixing pin along a third direction, and the second deformation hollow part extends from the limiting part to the second insertion part along the first direction; The second direction intersects the third direction, and the first direction is perpendicular to the plane determined by the second direction and the third direction.
10. A building block toy, characterized in that The circuit board, the building block assembly, and the circuit board fixing pin of any one of claims 1-9 are included.