Building block piece and building block

Abstract

Provided in the present invention are a building block piece and a building block. The building block piece comprises a housing, an electrical connection assembly and a functional assembly. The electrical connection assembly comprises a positive electrode conductive frame, a positive electrode, a negative electrode conductive frame and a negative electrode. The functional assembly is in contact with the positive electrode frame and the negative electrode frame to achieve electrical connection. The positive electrode and the negative electrode are exposed respectively by means of corresponding openings on the housing, so that after a plurality of building block pieces are assembled with each other, the electrical connection among the plurality of building block pieces can be achieved by means of contact between the positive electrodes and the negative electrodes of the plurality of building block pieces. Electrical components in each building block are powered by the positive electrode conductive frame and the negative electrode conductive frame, so as to reduce or even eliminate the use of conductive wires, and accordingly, reduce or eliminate the use of electrical contacts such as solder joints. Therefore, the internal electrical connection structure of the building block piece is simple and reliable. Even if there is a collision, fall, etc. during playing, the electrical connection structure is not prone to failure. The building block pieces are also easier to assemble, so that the production efficiency can be improved.

Description

Building block pieces and building blocks Technical field

[0001] The present invention belongs to the field of building blocks, and particularly relates to a building block piece and a building block. Background technique

[0002] Traditional building blocks usually only include multiple wooden or plastic building blocks or pieces, which can be assembled by children into various shapes. Due to their relatively single functions and playing methods, their attraction to children is limited, especially for older children. For this reason, in recent years, functional building blocks with electronic devices have emerged. In their building blocks or pieces, a battery and electronic devices capable of realizing functions such as sound or light emission are provided, bringing more fun to children through sound and light, and expanding the playing methods of building block toys.

[0003] Currently, there are mainly two types of such functional building blocks: one type is that each building block or piece is separately provided with a battery, an electronic device, a circuit board, a switch and connecting wires, etc. The switch can be a toggle switch exposed on one surface or a push switch arranged inside. Children make the building block emit light or sound by toggling the switch or pressing the building block, etc. This type of building block has a high cost, and there is often no linkage effect between multiple building blocks or pieces. The other type is that each building block or piece is provided with an electronic device, a circuit board and connecting wires, etc., and has exposed connection terminals or connection leads that can be led out to the outside. Multiple building blocks or pieces can be electrically connected to each other through the connection terminals or leads and connected to a battery. This type of building block requires manual connection of an external battery, which is inconvenient for children to operate.

[0004] Moreover, the above two types of functional building blocks also have a common problem: the electronic components and circuit structures in a single building block or piece are relatively complex and prone to failure. Taking the light-emitting building block as an example, at least an LED light-emitting device, a circuit board for driving the light-emitting device, multiple wires for connecting the light-emitting device to the circuit board and an internal battery or connection terminal are provided in a single building block or piece. And in order to make the light emitted by the internal light-emitting device able to penetrate to the outside, the outer shell of the building block or piece is made of a transparent or translucent material. During the process of children playing with the building blocks, the building blocks or pieces will inevitably be bumped and dropped many times, resulting in problems such as poor connection of the wires and electrical contacts. Soon, multiple building blocks or pieces will lose their light-emitting function, affecting the playing experience. And because the outer shell is transparent or translucent, the relatively messy wire and other structures inside can be seen, which also makes the product less beautiful. Summary of the invention

[0005] The present invention is made to solve at least one of the above problems, and aims to provide a functional building block piece and a building block toy with a more concise and reliable internal structure. The present invention adopts the following technical solutions:

[0006] This invention provides a building block sheet with the following technical features: a housing including a base and a matching cover plate; an electrical connection assembly disposed on the base; and a functional component electrically connected by the electrical connection assembly. The electrical connection assembly includes a positive conductive frame and one or more positive electrodes disposed on the positive conductive frame, a negative conductive frame and one or more negative electrodes disposed on the negative conductive frame, and the functional component contacts the positive and negative conductive frames respectively. The housing has one or more edges for contacting other building blocks, and each edge has multiple electrode receiving notches, with the positive and negative electrodes respectively disposed in corresponding electrode receiving notches.

[0007] The building block provided by the present invention may also have the following technical features, wherein the edge has multiple facets, and both the positive electrode and the negative electrode have multiple contact surfaces corresponding to the facets of the edge, and the contact surfaces are exposed from the corresponding electrode receiving notch to the outside of the corresponding facet.

[0008] The building block provided by the present invention may also have the following technical features, wherein the edge has an arc surface, and both the positive electrode and the negative electrode have a contact surface corresponding to the arc surface of the edge, and the contact surface is exposed from the corresponding electrode receiving notch to the outside of the arc surface.

[0009] The building block provided by the present invention may also have the following technical features, wherein the housing has a plurality of snap-fit ​​grooves corresponding to the electrode receiving notch, and both the positive electrode and the negative electrode are block-shaped, with their rear ends snapped into the housing through the snap-fit ​​grooves.

[0010] The building block provided by the present invention may also have the following technical features: the edges are multiple and form a polygon; the electrical connection component further includes an isolation frame disposed between the positive conductive frame and the negative conductive frame to isolate them; the functional component is disposed inside the isolation frame; and the positive conductive frame, the negative conductive frame, and the isolation frame all match the polygon.

[0011] The building block provided by the present invention may also have the following technical features, wherein one of the positive conductive frame / the negative conductive frame and the isolation frame has a plurality of positioning holes, and the other has a plurality of positioning posts that match the positioning holes; the positive conductive frame has a negative electrode avoidance notch corresponding to the negative electrode for avoiding the negative electrode; and the negative conductive frame has a positive electrode avoidance notch corresponding to the positive electrode for avoiding the positive electrode.

[0012] The building block provided by the present invention may also have the following technical features, wherein the positive conductive frame and the plurality of positive electrodes are integrally formed, at least a portion of the outer surface of the positive conductive frame and at least a portion of the outer surface of the positive electrodes are made of conductive material, the negative conductive frame and the plurality of negative electrodes are integrally formed, at least a portion of the outer surface of the negative conductive frame and at least a portion of the outer surface of the negative electrodes are made of conductive material, and at least a portion of the outer surface of the isolation frame is made of insulating material.

[0013] The building block provided by the present invention may also have the following technical features: the building block further includes: a plurality of magnetic attracting members, wherein each of the edges is provided with a pair of magnetic attracting members for adsorbing and combining with the edge of another building block, and the pair of magnetic attracting members are arranged in the corresponding edges in a complementary polarity manner.

[0014] The building block provided by the present invention may also have the following technical feature: the edge has a fitting structure for splicing and combining with the edge of another building block that has a corresponding fitting structure.

[0015] The building block provided by the present invention may also have the following technical features, wherein the building block is a functional building block, and the functional component includes: a power supply frame having one or more positive connection terminals and one or more negative connection terminals, respectively used to contact the positive conductive frame and the negative conductive frame to achieve electrical connection; and one or more functional electrical devices disposed on the power supply frame, wherein the functional electrical devices are any one or a combination of two or more of the following: light-emitting devices, sound-emitting devices, and acousto-optic devices.

[0016] The building block provided by the present invention may also have the following technical features: the positive conductive frame has one or more positive contact protrusions disposed on one side facing the isolation frame; the negative conductive frame has one or more negative contact protrusions disposed on one side facing the isolation frame; the isolation frame has a positive electrode groove matching the positive contact protrusion and a negative electrode groove matching the negative contact protrusion; the positive connection end is disposed in the positive electrode groove and contacts the positive contact protrusion through the engagement of the positive contact protrusion and the positive electrode groove; the negative connection end is disposed in the negative electrode groove and contacts the negative contact protrusion through the engagement of the negative contact protrusion and the negative electrode groove.

[0017] The building blocks provided by the present invention may also have the following technical features, wherein the electrical components are multiple, which are light-emitting devices, and the power supply frame is in the shape of a strip, cross, star, polygon or a combination thereof, and the multiple light-emitting devices are arranged along the outline of the power supply frame.

[0018] The building block provided by the present invention may also have the following technical features: the building block is a power building block, and the functional component includes an energy storage device disposed inside the electrical connection component.

[0019] The building block provided by the present invention may also have the following technical features, wherein the functional component further includes a circuit board electrically connected to the energy storage device, the circuit board having at least a switch button and a charging interface, the housing having a clearance hole matching the switch button and the charging interface, and the switch button and the charging interface being exposed from the clearance hole.

[0020] The present invention provides a building block having the following technical features: the building block includes: a plurality of building block pieces, wherein a plurality of the building block pieces serve as functional building block pieces, and a plurality of the building block pieces serve as power supply building block pieces for supplying power to the functional building block pieces, wherein the building block pieces are any of the aforementioned types of building block pieces, the functional building block pieces are any of the aforementioned types of functional building block pieces, and the power supply building block pieces are any of the aforementioned types of power supply building block pieces.

[0021] The role and effect of invention

[0022] The building block provided by the present invention has a shell, an electrical connection assembly, and a functional component. Since the electrical connection assembly includes a positive conductive frame, a positive electrode, a negative conductive frame, and a negative electrode, and the functional component contacts the positive and negative electrode frames respectively to achieve electrical connection, and the positive and negative electrodes are exposed through corresponding notches on the shell, after multiple building blocks are spliced ​​together, they can achieve electrical connection with each other through the contact of their positive and negative electrodes. The electrical components in each building block are powered through the positive and negative conductive frames, which can reduce or even completely eliminate the use of conductive wires, and correspondingly reduce or even avoid electrical contacts such as solder joints. Therefore, the internal electrical connection structure of the building block is simple and reliable. Even if there are bumps or drops during play, the electrical connection structure is not prone to failure, and it also makes the building block easier to assemble, which can improve production efficiency.

[0023] The building blocks provided by the present invention include power supply blocks and functional blocks, which have the same exposed positive and negative electrode structure. Therefore, when children play, they only need to assemble the power supply blocks and functional blocks as they would assemble other building blocks, without the need to connect external batteries, making them more convenient to use. Attached Figure Description

[0024] Figure 1 is a perspective view of the building block sheet in Embodiment 1 of the present invention;

[0025] Figure 2 is an exploded view of the structure of the building block in Embodiment 1 of the present invention;

[0026] Figure 3 is an exploded view of the building block pieces at different angles in Embodiment 1 of the present invention;

[0027] Figure 4 is an exploded view of the electrical connection component and functional component in Embodiment 1 of the present invention;

[0028] Figure 5 is a cross-sectional view of a partial structure of the building block sheet in Embodiment 1 of the present invention;

[0029] Figure 6 is a perspective view of the building block sheet in Embodiment 2 of the present invention;

[0030] Figure 7 is an exploded view of the structure of the building block sheet in Embodiment 2 of the present invention;

[0031] Figure 8 is an exploded view of the electrical connection component and functional component in Embodiment 2 of the present invention;

[0032] Figure 9 is a cross-sectional view of a partial structure of the building block sheet in Embodiment 2 of the present invention;

[0033] Figure 10 is a perspective view of the electrical connection component in Embodiment 3 of the present invention;

[0034] Figure 11 is a cross-sectional view of the front of the electrical connection component in Embodiment 3 of the present invention;

[0035] Figure 12 is a schematic diagram of the back structure of the electrical connection component in Embodiment 3 of the present invention;

[0036] Figure 13 is an exploded view of the structure of the building block in Embodiment 4 of the present invention;

[0037] Figure 14 is a perspective view of the electrical connection component and functional component in Embodiment 6 of the present invention;

[0038] Figure 15 is an exploded view of the electrical connection component and functional component in Embodiment 6 of the present invention;

[0039] Figure 16 is an exploded view of the structure of the building block in a modified example of the present invention;

[0040] Figure 17 is an exploded view of the structure of the building block in Modification 2 of the present invention;

[0041] Figure 18 is an exploded view of the structure of the building block in Modification 3 of the present invention;

[0042] Figure 19 is an exploded view of the structure of the building block in Modification 4 of the present invention;

[0043] Figure 20 is an exploded view of the structure of the building block in Modification 5 of the present invention;

[0044] Figure 21 is an exploded view of the structure of the building block in Modification 6 of the present invention;

[0045] Figure 22 is an exploded view of the structure of the building block in Modification 7 of the present invention;

[0046] Figure 23 is an exploded view of the structure of the building block in Modification 8 of the present invention;

[0047] Figure 24 is an exploded view of the structure of the building block in Modification 9 of the present invention;

[0048] Figure 25 is an exploded view of the structure of the building block in Modification 10 of the present invention;

[0049] Figure 26 is an exploded view of the structure of the building block in Modification 11 of the present invention;

[0050] Figure 27 is an example diagram of the splicing of multiple building blocks in Modification XII of the present invention;

[0051] Figure 28 is an example diagram of the splicing of multiple building blocks in Modification 13 of the present invention;

[0052] Figure 29 is an exploded view of the structure of the building block in Modification Fourteen of the present invention;

[0053] Figure 30 is a perspective view of the building block sheet in Modification XV of the present invention;

[0054] Figure 31 is a perspective view of the building block sheet in Modification Sixteen of the present invention;

[0055] Figure 32 is a perspective view of the building block sheet in Modification 17 of the present invention;

[0056] Figure 33 is a perspective view of the building block sheet in Modification 18 of the present invention;

[0057] Figure 34 is an exploded view of the structure of the building block in Modification 19 of the present invention;

[0058] Figure 35 is an exploded view of the structure of the building block in Modification 20 of the present invention;

[0059] Figure 36 is an example diagram of the splicing of multiple building blocks in Modification 21 of the present invention;

[0060] Figure 37 is an example diagram of the splicing of multiple building blocks in Modification 22 of the present invention.

[0061] Reference numerals: 1. Housing; 11. Base; 111. Base fixing hole; 112. Magnetic accommodating groove; 113. Electrode accommodating groove; 12. Cover plate; 121. Cover plate fixing hole; 122. Magnetic accommodating limiting protrusion; 123. Electrode mating groove; 124. Button clearance hole; 125. Interface clearance hole; 9. Magnetic accommodating part; 13. Electrode snap-fit ​​groove; 2. Magnetic accommodating part; 3. Cavity; 4. Electrical connection assembly; 41. Positive electrode conductive frame; 411. Positive electrode contact protrusion; 412. Positive electrode positioning post; 413. Negative electrode clearance notch; 42. Isolation frame; Positive electrode. 421 for recessed groove; 422 for negative electrode recessed groove; 423 for positioning hole; 43 for negative electrode conductive frame; 431 for negative electrode contact protrusion; 432 for negative electrode positioning post; 433 for positive electrode clearance notch; 5 for electrode; 51 for positive electrode; 52 for negative electrode; 6 for functional component; 161 for power supply frame; 17 for positive connection terminal; 18 for negative connection terminal; 162 for electrical device; 61 for energy storage device; 62 for circuit board; 63 for button; 631 for switch button; 632 for function button; 64 for charging interface; 300 for clearance cavity; 402 for circuit board. Detailed Implementation

[0062] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following describes the building block sheet and building blocks of the present invention in detail with reference to the embodiments and accompanying drawings.

[0063] Example 1

[0064] Figure 1 is a perspective view of the building block pieces in this embodiment.

[0065] As shown in Figure 1, this embodiment provides a building block sheet, which includes a shell 1 (i.e., the building block body), multiple magnetic components 2, an electrical connection assembly 4 (i.e., a conductive frame assembly), and a functional component 6 (i.e., an electrical function module).

[0066] The shell 1 is roughly square in shape with rounded corners and has four edges of equal length, each of which has magnetic attraction and electrical connection capabilities. In an alternative embodiment, only one edge or several edges may have magnetic attraction and electrical connection capabilities.

[0067] Figure 2 is an exploded view of the building block in this embodiment, and Figure 3 is an exploded view of the building block from different angles in this embodiment.

[0068] As shown in Figures 2 and 3, the housing 1 includes a base 11 and a cover plate 12, both of which are made of a translucent material that allows light to pass through.

[0069] The base 11 is generally rectangular in shape, with one side being open. Cylindrical protrusions are formed on the inner sides of the four corners of the base 11, with a circular through-hole 111 in the center. Two magnetic accommodating grooves 112 and a pair of electrode accommodating grooves 113 (i.e., clearance grooves) are formed on the inner sides of the four sides of the base 11. The magnetic accommodating grooves 112 are elongated rectangular grooves, and the two magnetic accommodating grooves 112 are located in the middle of one side. The electrode engaging grooves 113 are generally open rectangular grooves. In this embodiment, the pair of electrode engaging grooves 113 are respectively located near the two ends of the corresponding side, that is, near the two corners of the base 11 connected to that side. The two magnetic accommodating grooves 112 are located between the pair of electrode engaging grooves 113.

[0070] The cover plate 12 is a rectangular plate with raised surfaces. Cylindrical protrusions are formed at each of the four corners of the cover plate 12, and a circular through-hole 121 is formed in the center. Magnetic suction member limiting protrusions 122 and electrode mating grooves 123 (i.e., clearance grooves) are formed on one side surface of the four edges of the cover plate 12. The magnetic suction member limiting protrusions 122 are strip-shaped protrusions and are correspondingly arranged with the magnetic suction member receiving groove 112. The electrode mating groove 123 is a generally open rectangular groove and is correspondingly arranged with the electrode receiving groove 113.

[0071] The cover plate 12 is fitted into the opening side of the base 11 and fixed to the base 11 by a snap-fit ​​structure. After closing, it forms a shell 1, and a cavity 3 is formed inside the shell 1.

[0072] When the cover plate 12 is closed with the base 11, the magnetic accommodating groove 112 on the base 11 and the corresponding magnetic accommodating limiting protrusion 122 on the cover plate 12 are spliced ​​to form a magnetic accommodating part 9 (i.e., mounting groove), which has eight parts, with two magnetic accommodating parts 9 corresponding to each edge.

[0073] When the cover plate 12 and the base 11 are closed, the electrode receiving groove 113 on the base 11 and the corresponding electrode mating groove 123 on the cover plate 12 are aligned and fitted to form a complete electrode receiving notch (i.e., a clearance cavity) and an electrode locking groove 13 (i.e., a locking groove). Each electrode locking groove 13 is provided in a one-to-one correspondence with each electrode receiving notch, and each electrode locking groove 13 is connected to the corresponding electrode receiving notch and the cavity 3. In this embodiment, each edge of the housing 1 has three facets (outer surfaces). The facet located in the middle is perpendicular to the two facets located on both sides. The electrode receiving notch forms a rectangular opening on each of these three facets.

[0074] In an alternative, the edges of the housing 1 can also be in other shapes, such as having more than three facets or having curved surfaces.

[0075] The housing 1 is provided with a number of magnetic components 2 (i.e. magnetic components). The magnetic components 2 are preferably permanent magnets. Each magnetic component 2 is embedded in the corresponding magnetic component receiving part 9, thereby forming a positioning and constraint on the magnetic component 2.

[0076] The magnetic attractor 2 is magnetized along its own thickness direction, so that its two ends along the thickness direction are N pole and S pole respectively. In the two magnetic attractor receiving parts 9 at each edge position, the two magnetic attractors 2 are installed in a complementary polarity manner. That is, the N pole of one magnetic attractor 2 is inserted towards the bottom of the magnetic attractor receiving groove 112, and the other magnetic attractor 2 is rotated 180° relative to it so that its S pole is inserted towards the bottom of the magnetic attractor receiving groove 112. The two magnetic attractors 2 at each edge follow the above magnetic pole configuration rules to ensure the symmetry of the magnetic pole distribution on each edge of the building block. This layout allows the magnetic attractor to form a complementary polarity with the magnetic attractor on the corresponding edge of the adjacent building block when the adjacent building blocks are joined by the edges, even if one of the building blocks is rotated 180°, thereby achieving reliable adsorption.

[0077] In this embodiment, the building blocks are joined together using magnetic attachments. Alternatively, other joining methods can be used, such as having interlocking structures on the edges of the blocks for splicing, or having adhesive structures like Velcro on the edges of the blocks.

[0078] Figure 4 is an exploded view of the electrical connection components and functional components in this embodiment.

[0079] As shown in Figures 1 to 4, the electrical connection assembly 4 is installed in the cavity 3 that is adapted to its contour. The electrical connection assembly 4 includes a positive conductive frame 41 (i.e., a positive conductive wire frame), a plurality of positive electrodes 51 (i.e., positive terminals), an isolation frame 42 (i.e., a dividing frame), a negative conductive frame 43 (i.e., a negative conductive wire frame), and a plurality of negative electrodes 52 (i.e., negative terminals).

[0080] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are all thin rectangular frames that match the rectangle formed by the multiple sides of the housing 1. These three frames are stacked sequentially from top to bottom and fitted into the housing 1. In this embodiment, the positive conductive frame 41 is located near the cover plate 12, and the negative conductive frame 43 is located near the base 11.

[0081] The positive conductive frame 41 and the negative conductive frame 43 are made of non-metallic materials, and their surfaces are plated with a conductive metal layer to achieve conductivity. Alternatively, the positive conductive frame 41 and the negative conductive frame 43 can be made of metals such as iron or copper, or, provided that conductivity is achieved, a conductive metal layer can be formed on a portion of the surface of the positive conductive frame 41 and the negative conductive frame 43.

[0082] A plurality of positive electrode positioning posts 412 (i.e., fixing posts) are distributed on the side of the positive electrode conductive frame 41 facing the isolation frame 42. A plurality of negative electrode positioning posts 432 are distributed on the side of the negative electrode conductive frame 43 facing the isolation frame 42.

[0083] The positive electrode conductive frame 41 has one or more positive electrode contact protrusions 411 (i.e., protrusion portion one) on one end face facing the isolation frame 42. In this embodiment, there are two positive electrode contact protrusions 411, which are respectively provided at two adjacent corners of the positive electrode conductive frame 41. The negative electrode conductive frame 43 has one or more negative electrode contact protrusions 431 (i.e., protrusion portion two) on one end face facing the isolation frame 42. In this embodiment, there are two negative electrode contact protrusions 431, which are respectively provided at two adjacent corners of the negative electrode conductive frame 42.

[0084] The isolation frame 42 is made of insulating material, or at least the surface of its contact area with the conductive frame is made of insulating material. The isolation frame 42 is located between the positive conductive frame 41 and the negative conductive frame 43, serving as an isolation element to prevent short circuits between them. The isolation frame 42 has several through-hole positioning holes 423. Positive positioning posts 412 and negative positioning posts 432 are correspondingly positioned to the positioning holes 423. During assembly, each positive positioning post 412 and each negative positioning post 432 is embedded into its corresponding positioning hole 423, achieving relative fixation and positioning between the three frames. The end face of the isolation frame 42 facing the positive conductive frame 41 has one or more positive electrode slots 421 (i.e., slot one), and the end face facing the negative conductive frame 43 has one or more negative electrode slots 422 (i.e., slot two).

[0085] The positive conductive frame 41 and the negative conductive frame 43 extend outward to form one or more pairs of electrodes 5 with opposite polarities. Each pair of electrodes 5 includes a positive electrode 51 and a negative electrode 52. In this embodiment, there are four pairs of electrodes 5. The four positive electrodes 51 are integrally formed with the positive conductive frame 41, and the four negative electrodes 52 are integrally formed with the negative conductive frame 42. The four pairs of electrodes 5 are respectively disposed on the four sides of the housing 1, and the position of each pair of electrodes 5 corresponds to the position of the electrode receiving notch on the housing 1. That is, each pair of positive electrodes 51 and negative electrodes 52 are respectively located on both sides of the two magnetic attractors 2 on one side of the housing 1. This arrangement can increase the magnetic contact area and reduce the magnetic flux attenuation, making the adsorption of the magnetic attractors 2 more stable.

[0086] Each electrode 5 is block-shaped, with its rear end fixed to a corresponding conductive frame. Its front end is rectangular and larger than its rear end, with the width of the front end approximately the same as the width of the electrode receiving notch, and the height of the front end slightly greater than the thickness of the housing 1. The front end of each electrode 5 fits into the corresponding electrode receiving notch, and its rear end is correspondingly engaged in the corresponding electrode engaging slot 13, thereby further positioning the electrode 5. The three outer surfaces of the front end of each electrode 5 are contact areas for contact with electrodes 5 of other building blocks. These three outer surfaces protrude outward from the three edges of the corresponding side of the housing 1, with each outer surface of the front end of the electrode 5 located further outward relative to the corresponding edge.

[0087] In an alternative, the electrode 5 may also be in other shapes that match the edge shape of the housing 1. For example, when the edge has more than three facets, the electrode 5 is also in a corresponding polygonal block shape with more than three contact surfaces; when the edge has an arc surface, the electrode 5 is also in a corresponding block shape with an arc surface.

[0088] That is, the contact area of ​​each positive electrode 51 and negative electrode 52 is exposed on the side and upper and lower end faces of the housing 1, providing a combination of multiple pairs of positive electrodes 51 and negative electrodes 52 for current to flow and form a circuit.

[0089] Furthermore, as shown in Figure 4, in this embodiment, two positive electrodes 51 are disposed on both sides of one corner of the positive electrode conductive frame 41 with a positive electrode contact protrusion 411. The other corner (located on the same diagonal) opposite to this corner does not have a positive electrode 51, but instead has two negative electrode clearance notches 413 that match the electrodes 5, used to avoid contact between the negative electrode 52 and the positive electrode conductive frame 41 during assembly. On both sides of the other corner of the positive electrode conductive frame 41 with the positive electrode contact protrusion 411, a positive electrode 51 and a negative electrode clearance notch 413 are respectively disposed. On both sides of the other corner opposite to this corner, a positive electrode 51 and a negative electrode clearance notch 413 are also respectively disposed. The arrangement of the negative conductive frame 43 and the negative electrode 52 is consistent with that of the positive conductive frame 41 and the positive electrode 51. That is, the negative conductive frame 43 also has multiple positive electrode clearance notches 433 to prevent contact between the negative conductive frame 43 and the positive electrode 51 during assembly. The distribution of the positive electrode clearance notches 433 and the negative electrode 52 is consistent with the distribution of the negative electrode clearance notches 413 and the positive electrode 51. Therefore, when arranged as shown in Figure 4, the positive electrode 51 corresponds to the positive electrode clearance notch 433 on the negative conductive frame 43, and the negative electrode 52 corresponds to the negative electrode clearance notch 413 on the positive conductive frame 41.

[0090] When two building blocks are magnetically joined together using the magnetic chuck 2, the positive electrodes 51 on either side of the joining position will contact each other, achieving positive electrode interconnection; simultaneously, the negative electrodes 52 on either side of the joining position will also connect, achieving negative electrode interconnection, thus establishing a conductive path on the joining surface to meet the requirement of forming a complete current loop. When the two building blocks are joined together in a mutually perpendicular state, their joining surfaces can also contact each other through their exposed positive and negative terminals, forming a conductive path, thus achieving electrical connection under different orientations. Since the electrode 5 has three exposed contact surfaces and is located further outward relative to the corresponding edge, the two building blocks can be joined at any angle; that is, when the two building blocks are joined, the included angle between two adjacent surfaces is between 0 and 360 degrees.

[0091] Functional module 6 includes a power supply frame 161 (i.e., a power supply frame) and one or more electrical devices (functional electrical devices). In this embodiment, the electrical devices are multiple light-emitting devices 162 (i.e., light-emitting units).

[0092] The power supply frame 161 comprises multiple elongated frame sections (i.e., support sections). The power supply frame 161 is provided with at least one positive connection end 17 and at least one negative connection end 18, located at two ends of the frame sections, respectively. In this embodiment, the power supply frame 161 is X-shaped, with two positive connection ends 17 and two negative connection ends 18 extending symmetrically from both ends. Alternatively, the power supply frame 161 can also be rectangular, triangular, cross-shaped, flower-shaped, or other shapes.

[0093] After assembly, the two positive connection terminals 17 are inserted into the two positive electrode slots 191 one-to-one, and the two positive electrode contact protrusions 411 are inserted into their respective positive electrode slots 191 and contact the inserted positive connection terminals 17, thereby establishing a positive electrical connection. The negative electrical connection is the same: the two negative connection terminals 18 are inserted into the two negative electrode slots 192 one-to-one, and the two negative electrode contact protrusions 431 are inserted into their respective negative electrode slots 192 and contact the inserted negative connection terminals 18, thereby establishing a negative electrical connection.

[0094] The light-emitting device 162 is preferably an LED lamp, which is mounted on the power supply frame 161. In this embodiment, each frame part of the power supply frame 161 is provided with a light-emitting device 162, and the light-emitting device 162 is arranged across the opposite sides of the frame part, so that both the front and back sides of the building block can emit light when current flows through, ensuring that the light of the light-emitting device 162 inside the building block is visible from both sides after power is applied.

[0095] In addition, the design of the power supply frame 161 is flexible. Under the premise of ensuring that the power supply frame 161 has at least one positive connection end 17 and at least one negative connection end 18 to meet the basic electrical connection requirements, it can be freely extended to add several positive connection ends 17 and several negative connection ends 18 according to its shape and functional requirements, so as to adapt to the internal layout and electrical connection requirements of different shapes of housing 1.

[0096] The specific structure of the power supply frame 161 and the light-emitting device 162 is existing technology, for example, existing flexible LED light strips can be used, so it will not be described in detail.

[0097] The specific working process of the building block pieces in this embodiment is as follows:

[0098] Because a stacked electrical connection assembly 4 is provided in the cavity 3 of the housing 1, the two conductive frames are isolated by an isolation frame 42 to avoid contact. The positive electrode 51 and the negative electrode 52, which are respectively connected to the positive conductive frame 41 and the negative conductive frame 43, extend outward from the conductive frame to the outer surface of the housing 1. The positive connection end 17 of the functional component 6 is connected to the positive conductive frame 41, and the negative connection end 18 is connected to the negative conductive frame 43. When the building block is connected to a power source, the current path is along the positive electrode 51, the positive conductive frame 41, the functional component 6, the negative conductive frame 43, and the negative electrode 52, realizing a complete current loop. When two of the above-mentioned building blocks are magnetically attached together by the magnetic suction component 2, the magnetic force drives the positive electrode 51 and the negative electrode 52 on both sides of the splicing surface to make precise contact, thereby transmitting current to the spliced ​​building blocks and automatically establishing a conductive path across the building blocks. This allows the spliced ​​building blocks to trigger the light-emitting function, realizing an intelligent interactive experience of being powered on immediately upon splicing.

[0099] Functions and effects of Example 1

[0100] The building block provided in this embodiment has a shell, an electrical connection component, and a functional component. Since the electrical connection component includes a positive conductive frame, a positive electrode, a negative conductive frame, and a negative electrode, the functional component contacts the positive and negative electrode frames respectively to achieve electrical connection. The positive and negative electrodes are exposed through corresponding notches on the shell. Therefore, after multiple building blocks are spliced ​​together, they can achieve electrical connection with each other through the contact of their positive and negative electrodes. The electrical components in each building block are powered through the positive and negative conductive frames, replacing the internal electrical connection layout that is entirely achieved by conductive wires. This can reduce or even eliminate the use of conductive wires, and correspondingly reduce or even eliminate electrical contacts such as solder joints. Therefore, the internal electrical connection structure of this building block is simple and reliable. Even if there are bumps or drops during play, the electrical connection structure is not prone to failure. It also makes the building block easier to assemble and can improve production efficiency.

[0101] In this embodiment, the shell is rectangular and each side is provided with a pair of positive and negative electrodes. Therefore, each side can be used to connect with other building blocks to achieve electrical connection, providing more possibilities for splicing and combination, and making it more playable.

[0102] Furthermore, two magnetic connectors are embedded on each side of the shell. A pair of positive and negative electrodes are respectively set on both sides of the magnetic connectors, that is, near the corners of the shell, so that there is a large gap between the pair of positive and negative electrodes. By setting the polarity of the magnetic connectors, when two building blocks are magnetically spliced ​​together on any two sides, the corresponding magnetic connectors are precisely aligned and generate an adsorption force, automatically aligning and connecting the positive and negative electrodes of the two building blocks. In other words, the physical splicing and circuit conduction are completed simultaneously through magnetic adsorption, realizing an intelligent interactive experience of powering on upon splicing, resulting in a better user experience.

[0103] Furthermore, since each side of the housing is provided with two magnetic component receiving slots, each magnetic component is snapped into the receiving slot between the base and the cover plate, ensuring that the direction is controllable during magnetic splicing and improving the positioning of the magnetic component installation position.

[0104] Furthermore, when the electrical connection assembly is installed in the inner cavity of the housing, the matching slots of the positive electrode and the negative electron are embedded into the corresponding matching slots in a recessed form, forming a mechanical interlock between the electrode and the housing. The fitting of the electrode rear end structure and the matching slot not only restricts the lateral displacement of the terminal, but also ensures that the contact area of ​​the electrode is always stably exposed on the outside of the housing. The dual locking of the matching slot and the electrode receiving notch can improve the installation stability of the assembly.

[0105] Furthermore, the three surfaces at the front ends of the positive and negative electrodes protrude outward from the corresponding notches on the shell, and are located further outward relative to the corresponding facets (outer surfaces) of the shell. Therefore, it is easier to achieve electrode contact between the two building blocks, and the two building blocks can be spliced ​​at any angle, and their corresponding electrodes can effectively contact each other. This allows for a higher degree of freedom in building, and multiple building blocks can be spliced ​​into various planar and three-dimensional shapes, which is more playable and makes the electrode contact more reliable. The building blocks can emit light stably when spliced ​​into various shapes.

[0106] Furthermore, the positive conductive frame, the isolation frame, and the negative conductive frame are stacked sequentially, with the frame shape matching the shell shape and embedded within the shell. The conductive frame and the isolation frame are relatively fixed and positioned through the cooperation of positioning pins and positioning holes. Therefore, the electrical connection assembly has high reliability. The positive electrode will not contact the negative conductive frame, and the negative electrode will not contact the positive conductive frame. When the building blocks are bumped or dropped, the electrical connection assembly is not prone to displacement or deformation. Moreover, since the stacked three-layer frame has a certain strength, and the block-shaped electrode also has a certain strength, it can also provide a certain support for the shell and the cover plate, making the overall strength of the building blocks higher.

[0107] Furthermore, the positive and negative conductive frames have positive and negative contact protrusions, respectively, and the isolation frame has matching positive and negative slots. Therefore, during assembly, it is only necessary to insert the positive connection end of the light-emitting device into the positive slot and make it contact the positive contact protrusion, and insert the negative connection end into the negative slot and make it contact the negative contact protrusion to achieve electrical connection between the light-emitting device and the positive and negative conductive frames. There is no need to form electrical contact points through welding or other methods, which reduces costs, greatly improves production efficiency, and allows the electrical components in the building blocks to be easily adjusted and replaced as needed.

[0108] Furthermore, the positive and negative connection terminals of the power supply frame directly contact the surfaces of the positive and negative conductive frames respectively, forming a conductive path using the conductive plating layer of the conductive frames, triggering the light-emitting unit to light up. The current completes the circuit from the positive terminal → positive conductive frame → positive connection terminal → light-emitting unit → negative connection terminal → negative conductive frame → negative terminal, triggering the light-emitting unit to light up. The modular design allows the light-emitting device to be directly embedded into the cavity of the housing and secured to the electrical connection components along with the power supply frame. During assembly, only the contact surfaces of the connection terminals of the power supply frame and the conductive frames need to be aligned to complete the circuit integration. The rigid contact between the power supply frame and the conductive frames reduces the risk of open circuits caused by the shaking of the building blocks, forming a uniform and stable light source output inside the transparent building blocks.

[0109] Furthermore, multiple positive electrodes are integrally formed with the positive conductive frame, and multiple negative electrodes are integrally formed with the negative conductive frame. The positive and negative conductive frames are manufactured by plating a metal conductive layer on the surface of a non-metallic material. This not only makes it easier to process such a complex frame structure, but also reduces costs and the weight of the building blocks.

[0110] Furthermore, the overall structure of the positive conductive frame and positive electrode, and the negative conductive frame and negative electrode are completely identical, so they can be manufactured using the same equipment and methods (e.g., using the same mold), thereby further reducing the production cost of the product and improving production assembly efficiency, and shortening the production cycle.

[0111] Example 2

[0112] This embodiment provides a building block sheet and building blocks. In this embodiment, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0113] Figure 6 is a perspective view of the building block in this embodiment, Figure 7 is an exploded view of the building block in this embodiment, Figure 8 is an exploded view of the electrical connection component and functional component in this embodiment, and Figure 9 is a partial cross-sectional view of the building block in this embodiment.

[0114] As shown in Figures 6 to 9, compared with Embodiment 1, the difference lies in the distribution of electrodes in the building blocks of this embodiment, and correspondingly, the shell structure is different.

[0115] Specifically, in this embodiment, the housing 1 of the building block is also rectangular, with each side having a pair of electrode receiving notches and two magnetic receiving portions 9. The difference is that the two magnetic receiving portions are located closer to the two corners connected to the side, and the pair of electrode receiving notches are located between the two magnetic receiving portions 9 of the side, that is, in the middle of the side, and are close to each other. Correspondingly, multiple pairs of positive electrodes 51 and negative electrodes 52 are exposed from the middle of each side of the housing 1. In the electrical connection assembly 4, each positive electrode 51 extends outward from the middle of one side of the positive conductive frame 41, and each negative electrode 52 extends outward from the middle of one side of the negative conductive frame 43.

[0116] In this embodiment, the other structures are the same as in Embodiment 1, so they will not be described again.

[0117] Functions and effects of Example 2

[0118] Based on the building blocks and building blocks provided in this embodiment, similar to embodiment one, since each side of the building block has a pair of exposed electrodes, multiple building blocks can be spliced ​​together at any angle, and the electrodes can stably contact and conduct with each other.

[0119] Example 3

[0120] This embodiment provides a building block sheet and building blocks. In this embodiment, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0121] Figure 10 is a perspective view of the electrical connection component in this embodiment, Figure 11 is a cross-sectional view of the front of the electrical connection component in this embodiment, and Figure 12 is a structural schematic diagram of the back of the electrical connection component in this embodiment.

[0122] As shown in Figures 10 to 12, the difference from Embodiment 2 is that the structure of the electrical connection component 4 in the building block pieces of this embodiment is different.

[0123] In the electrical connection assembly 4 of this embodiment, the isolation frame 42 is a circuit board 402. The positive conductive frame 41 and the negative conductive frame 43 are both conductive layers formed on the front and back sides of the isolation frame 42, for example, they can be aluminum foil or copper foil layers formed by spraying. That is, the positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are integrally formed and laid along the contour (surface shape) of the isolation frame 42.

[0124] The back of the isolation frame 42 (circuit board 402) has only a portion of the conductive layer of the negative conductive frame 43. The portion of the conductive layer of the negative conductive frame 43 on the back passes through the circuit board and connects to the other portion of the conductive layer of the negative conductive frame 43 on the front. The conductive layer of the positive conductive frame 41 and the portion of the conductive layer of the negative conductive frame 43 form two independent conductive units.

[0125] In addition, the power supply frame 161 of the functional component 6 is also integrally formed on the inner side of the isolation frame 42, and multiple light-emitting devices 162 are connected to the power supply frame 161.

[0126] In this embodiment, the other structures are the same as in Embodiment 2, so they will not be described again.

[0127] Functions and effects of Example 3

[0128] Based on the building blocks and the function and effect of Embodiment 2, since the isolation frame and the power supply frame are integrally formed, and the positive and negative conductive frames are integrally formed on the isolation frame by spraying, forming a double-sided conductive integrated structure, the volume of the electrical connection component is further reduced compared with the split design while achieving the same electrical connection effect. This allows the building blocks to be thinner, and during assembly, the electrical connection component and the functional component can be assembled as an integral part for convenient and quick assembly. They are also easier to assemble in the cavity of the shell, thereby improving assembly efficiency and further compressing the production cycle.

[0129] Example 4

[0130] This embodiment provides a building block sheet and building blocks. In this embodiment, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0131] Figure 13 is an exploded view of the structure of the building blocks in this embodiment.

[0132] As shown in Figure 13, the building block in this embodiment is a power supply building block. Compared with the functional building block in Embodiment 1, the difference lies in the structure and function of the functional component 6. Correspondingly, the structure of the housing 1 is also different.

[0133] In this embodiment, functional component 6 is a battery assembly (i.e., a power supply device), which is installed inside the cavity 3 of the housing 1 and located inside the electrical connection assembly 4. Functional component 6 includes an energy storage device 61 (i.e., an energy storage board) and a circuit board 62.

[0134] The circuit board 62 is electrically connected to the energy storage device 61. The circuit board 62 is equipped with multiple buttons 63 and a charging interface 64.

[0135] The multiple buttons 63 include a switch button 631 (i.e., the first button) and a function button 632 (i.e., the second button). Pressing the switch button 631 can turn the power on or off, and pressing the function button 632 can control the brightness of the light-emitting device 162 and cut off the power supply. The cover plate 12 has two button clearance holes 124 (i.e., clearance holes one) corresponding to the positions of these two buttons 63. The switch button 631 and the function button 632 pass through the two button clearance holes 124 respectively, and the upper end of the buttons protrudes outside the cover plate 12.

[0136] The charging interface 64 is used to connect a charging cable to replenish (charge) the energy storage device 61. In this embodiment, the charging interface 23 is a Type-C standard interface. The cover plate 12 has an interface clearance hole 125 (i.e., clearance hole two) at the position corresponding to the charging interface 64.

[0137] The energy storage device 61 and the circuit board 62 are fixed inside the cavity 3 of the housing 1. The positive and negative terminals of the circuit board 62 are electrically connected to the positive conductive frame 41 and the negative conductive frame 43 of the electrical connection assembly 4, respectively, forming a power supply circuit. When the switch button 631 is pressed, the circuit board 62 is triggered to conduct, and current flows from the energy storage device 61 to the circuit board 62. The positive conductive frame 41 and the negative conductive frame 43 cooperate with the conductive path of the adjacent building blocks to transmit current, driving the light-emitting devices in the adjacent building blocks to work. Pressing the function button 632 cuts off the circuit and disconnects the power. When an external plug is connected to the charging interface 23, the energy storage device 61 can be charged.

[0138] In this embodiment, the other structures are the same as in Embodiment 1, and therefore will not be described again. The power supply building block in this embodiment can be used in conjunction with the functional building block in Embodiment 1.

[0139] Functions and effects of Example 4

[0140] Based on the functions and effects of the building blocks provided in this embodiment, and the energy storage device and circuit board are provided inside the electrical connection component, and the positive and negative terminals of the circuit board are respectively connected to the positive and negative conductive frames, a power supply circuit can be formed, making the building block a power supply building block that can supply power to other building blocks. When children play, they do not need to connect the functional building blocks to an external battery, but only need to assemble the power supply building blocks like assembling other building blocks, making it more convenient to use.

[0141] Furthermore, the circuit board has a switch button, function buttons, and a charging interface. The cover plate has corresponding clearance holes to expose these components. Pressing the switch button triggers the circuit board to turn on or off. When on, current flows from the energy storage device to the circuit board. The positive and negative conductive frames cooperate with the conductive paths of adjacent building blocks to drive the electrical components in those blocks. Pressing the function buttons enables corresponding functions, such as switching the brightness of the light-emitting device. When an external plug is connected to the charging interface, the energy storage device can be charged via the circuit board. In other words, the power supply building block in this embodiment integrates power supply, charging, and control functions into a single building block, enabling continuous power supply and flexible start / stop of the building block system containing the power supply building block and multiple function building blocks. Simultaneously, the modular design ensures convenient disassembly and maintenance, improving the functional expandability and ease of use of the building block system.

[0142] Example 5

[0143] This embodiment provides a building block sheet and building blocks. In this embodiment, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0144] Compared to Embodiment 1, the difference lies in that, in this embodiment, the functional component 6 includes a sound-emitting device (i.e., a sound-generating apparatus) or an audio-visual device (e.g., a display screen). The sound-emitting device can emit sound when powered on, and the display screen can display numbers or patterns. In an alternative embodiment, the functional component 6 may also include a combination of any of the following: a light-emitting device, a sound-emitting device, and an audio-visual device.

[0145] Functions and effects of Example 5

[0146] Based on the function and effect of the building blocks provided in this embodiment, since the functional components can also include sound-generating devices and sound and light devices, more functions and playability are provided.

[0147] Example 6

[0148] This embodiment provides a building block sheet and building blocks. In this embodiment, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0149] Figure 14 is a perspective view of the electrical connection component and the functional component in this embodiment, and Figure 15 is an exploded view of the structure of the electrical connection component and the functional component in this embodiment.

[0150] As shown in Figures 14 and 15, the difference from Embodiment 1 is that the composition of functional component 6 in the building blocks of this embodiment is different.

[0151] Specifically, in the functional component 6 of this embodiment, the power supply frame 161 is a rectangular transparent frame, and a light-emitting device 162 is arranged inside it. In the direction of the surface of the building block, the area of ​​the functional component 6 accounts for more than or equal to 80% of the plane of the cavity 3. Therefore, the proportion of the light-emitting area is large, and a better light-emitting effect can be obtained.

[0152] The power supply frame 161 can be engaged inside the isolation frame 42. The positive connection end 17 and the negative connection end 18 are designed with protrusions, both protruding from the same side wall of the power supply frame 161 and spaced apart along the length of that side wall. The isolation frame 42 is U-shaped, a square frame missing one edge, so that after the positive conductive frame 41 and the negative conductive frame 43 are installed, a clearance cavity 300 is left between the two frames. One edge of the positive conductive frame 41... The middle part has a positive contact protrusion 411 (i.e., a positive contact bump), and the middle part of one side of the negative conductive wire frame 43 has a negative contact protrusion 431 (i.e., a negative contact bump). Both the positive contact protrusion 411 and the negative contact protrusion 431 extend toward the relief cavity 300. When the side of the power supply frame 161 is inserted into the relief cavity, the positive connection end 17 and the negative connection end 18 contact the positive contact protrusion 411 and the negative contact protrusion 431 respectively.

[0153] Due to manufacturing limitations, the power supply frame 161 on this side (i.e., the side with the positive connection end 17 and the negative connection end 18) does not have the conditions to arrange the light-emitting device 162, resulting in this side not emitting light. In order not to affect the aesthetics, the non-light-emitting edge is embedded in the clearance cavity, and the positive conductive frame 41 and the negative conductive frame 43 on both sides are used to shield and hide the non-light-emitting part, the positive connection end, the negative connection end, and the positive contact bump and the negative contact bump of the power supply frame 161, thereby improving the aesthetics of the building block.

[0154] Functions and effects of Example 6

[0155] Based on the building blocks and the building blocks provided in this embodiment, and building upon some of the functions and effects of Embodiment 1, since the power supply frame adopts a rectangular transparent frame, almost all the space inside the conductive frame and the isolation frame can be used to set up the power supply frame and the light-emitting device. Therefore, a larger light-emitting area can be obtained, making the building blocks have a better light-emitting effect.

[0156] Furthermore, by using positive and negative conductive frames to hide the non-light-emitting parts of the power supply frame and the positive and negative connection terminals, the overall appearance of the building blocks becomes aesthetically pleasing.

[0157] Variation Example 1

[0158] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0159] Figure 16 is an exploded view of the structure of the building blocks in this modified example.

[0160] As shown in Figure 16, compared with Embodiment 1, the difference lies in that, in this modified example, the power supply frame 161 is rectangular in shape, smaller than the size of the conductive frame and the isolation frame, and is placed in the center of the cavity 3. The power supply frame 161 is provided with a positive connection end 17 and a negative connection end 18, which are located at the center of opposite sides of the power supply frame 161 and extend outward. Multiple light-emitting devices 162 are arranged along the rectangular outline of the power supply frame 161.

[0161] Correspondingly, the positive electrode groove 191 on the isolation frame 42 is provided corresponding to the positive connection terminal 17, and the positive electrode contact protrusion 411 on the positive electrode conductive frame 41 is also provided corresponding to the positive connection terminal 17. The negative electrode groove 192 on the isolation frame 42 is provided corresponding to the negative connection terminal 18, and the negative electrode contact protrusion 432 on the negative electrode conductive frame 43 is also provided corresponding to the negative connection terminal 18.

[0162] In this modified example, the other structures are the same as in Example 1.

[0163] Variation Example 2

[0164] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0165] Figure 17 is an exploded view of the structure of the building blocks in this modified example.

[0166] As shown in Figure 17, compared with Embodiment 1, the difference lies in that, in this modified example, the power supply frame 161 is cross-shaped, naturally forming four symmetrically extending frame sections (i.e., branches). The power supply frame 161 is correspondingly provided with two positive connection ends 17 and two negative connection ends 18, each distributed at a corresponding position in the cross structure to ensure the balance of the electrical connection. Specifically, the two positive connection ends 17 are located at the ends of two of the frame sections, and the two negative connection ends 18 are located at the ends of the other two branches. Multiple light-emitting devices 162 are respectively disposed on the four frame sections of the power supply frame 161.

[0167] A positive contact protrusion 411 on the positive conductive frame 41 is located at the midpoint of two sides of the positive conductive frame 41, and a negative contact protrusion 431 on the negative conductive frame 43 is located at the midpoint of two sides of the negative conductive frame 43. Positive and negative electrode slots 191 and 192 on the isolation frame 42 are respectively located at the midpoint of each side of the isolation frame 42. The positive connection end 17 and negative connection end 18 of the power supply frame 161 are embedded in their respective slots, so that the four frame parts are aligned with the length and width directions of the housing 1, respectively.

[0168] In this modified example, the other structures are the same as in Example 1.

[0169] Variation Example 3

[0170] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0171] Figure 18 is an exploded view of the structure of the building blocks in this modified example.

[0172] As shown in Figure 18, compared with Embodiment 1, the difference lies in that, in this modified example, the power supply frame 161 is rhomboid in shape, with two positive connection ends 17 and two negative connection ends 18 symmetrically arranged. The two positive connection ends 17 are located at the corner positions of a pair of opposite vertices of the power supply frame 161, while the two negative connection ends 18 are correspondingly located at the corner positions of the other opposite vertices. Multiple light-emitting devices 162 are arranged along the rhomboid outline of the power supply frame 161.

[0173] A positive contact protrusion 411 on the positive conductive frame 41 is located at the midpoint of two sides of the positive conductive frame 41. A negative contact protrusion 431 on the negative conductive frame 43 is located at the midpoint of two sides of the negative conductive frame 43. A positive contact groove 421 and a negative contact groove 422 on the isolation frame 42 are respectively located at the midpoint of each side of the isolation frame 42. The positive connection end 17 and the negative connection end 18 of the power supply frame 161 are embedded in the corresponding grooves, so that each corner of the power supply frame 161 is located at the midpoint of each side of the conductive frame.

[0174] In this modified example, the other structures are the same as in Example 1.

[0175] Variation Example 4

[0176] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0177] Figure 19 is an exploded view of the structure of the building blocks in this modified example.

[0178] As shown in Figure 19, the difference from Embodiment 1 is that in this modified example, the shell 1 is in the shape of an equilateral triangle with three edges of equal length.

[0179] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are equilateral triangular frames that match the housing 1.

[0180] The power supply frame 161 has a three-branched shape with three long strip-shaped frame parts extending from a center, and multiple light-emitting devices 162 are respectively set on each frame part.

[0181] In this modified example, the other structures are the same as in Example 1.

[0182] Variation Example 5

[0183] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0184] Figure 20 is an exploded view of the structure of the building blocks in this modified example.

[0185] As shown in Figure 20, the difference from Embodiment 1 is that in this modified example, the shell 1 is in the shape of an equilateral triangular piece.

[0186] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are equilateral triangular frames that match the housing 1.

[0187] The power supply frame 161 is in the shape of an equilateral triangle corresponding to the housing 1, and multiple light-emitting devices 162 are arranged along the triangular outline of the power supply frame 161.

[0188] In this modified example, the other structures are the same as in Example 1.

[0189] Variation Example 6

[0190] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0191] Figure 21 is an exploded view of the structure of the building blocks in this modified example.

[0192] As shown in Figure 21, the difference from Embodiment 1 is that in this modified example, the shell 1 is in the shape of a long triangular piece, and the lengths of its relatively long two sides are equal.

[0193] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are long triangular frames that match the housing 1.

[0194] The power supply frame 161 has a three-branched shape with three long strip-shaped frame parts extending from a center, and multiple light-emitting devices 162 are respectively set on each frame part.

[0195] In this modified example, the other structures are the same as in Example 1.

[0196] Variation Example 7

[0197] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0198] Figure 22 is an exploded view of the structure of the building blocks in this modified example.

[0199] As shown in Figure 22, the difference from Embodiment 1 is that in this modified example, the shell 1 is in the shape of a right-angled triangle (i.e., an upper triangle).

[0200] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are right-angled triangular frames that match the housing 1.

[0201] The power supply frame 161 is a right-angled triangle shape corresponding to the housing 1, and multiple light-emitting devices 162 are arranged along the triangular outline of the power supply frame 161.

[0202] In this modified example, the other structures are the same as in Example 1.

[0203] Variation Example 8

[0204] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0205] Figure 23 is an exploded view of the structure of the building blocks in this modified example.

[0206] As shown in Figure 23, the difference from Embodiment 1 is that in this modified example, the shell 1 is in the shape of a petal, that is, in the shape of a triangular piece that is curved as a whole, and it has three edges, one of which is a straight edge and the other two edges are curved edges.

[0207] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are integrally curved triangular frames that match the housing 1.

[0208] The power supply frame 161 has a three-branched shape with three long strip-shaped frame parts extending from a center, and has an arc that matches the housing 1. Multiple light-emitting devices 162 are respectively set on each frame part.

[0209] In this modified example, the other structures are the same as in Example 1.

[0210] Variation Example 9

[0211] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0212] Figure 24 is an exploded view of the structure of the building blocks in this variation.

[0213] As shown in Figure 24, the difference from Embodiment 1 is that in this modified example, the shell 1 is rectangular in shape.

[0214] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are rectangular frames that match the housing 1.

[0215] The power supply frame 161 is rectangular, corresponding to the shape of the housing 1. A positive connection end 17 and a negative connection end 18 extend from the middle of both ends of its length direction, and multiple light-emitting devices 162 are arranged along the rectangular outline of the power supply frame 161.

[0216] In this modified example, the other structures are the same as in Example 1.

[0217] Variation Example 10

[0218] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0219] Figure 25 is an exploded view of the structure of the building blocks in this variation.

[0220] As shown in Figure 25, the difference from Embodiment 1 is that in this modified example, the shell 1 is pentagonal in shape and the lengths of its five edges are equal.

[0221] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are pentagonal frames that match the housing 1.

[0222] The power supply frame 161 is shaped like a five-pointed star, corresponding to the shape of the housing 1. Each corner of the five-pointed star extends a positive connection end 17 or a negative connection end 18. Multiple light-emitting devices 162 are arranged along the five-pointed star outline of the power supply frame 161.

[0223] In this modified example, the other structures are the same as in Example 1.

[0224] Variation Example 11

[0225] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0226] Figure 26 is an exploded view of the structure of the building blocks in this modified example.

[0227] As shown in Figure 26, the difference from Embodiment 1 is that in this modified example, the shell 1 is hexagonal in shape.

[0228] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are hexagonal frames that match the housing 1.

[0229] The power supply frame 161 is a hexagonal star shape corresponding to the shape of the housing 1. Each corner of the hexagon extends a positive connection end 17 or a negative connection end 18. Multiple light-emitting devices 162 are arranged along the hexagonal star outline of the power supply frame 161.

[0230] In this modified example, the other structures are the same as in Example 1.

[0231] Variation Example Twelve

[0232] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0233] Figure 27 is an example diagram of multiple building blocks being assembled in this variation.

[0234] As shown in Figure 27, the difference from Embodiment 1 is that the building blocks in this modified example include building block pieces of various shapes, including the square building block piece of Embodiment 1, the right-angled triangular building block piece of Modified Example 7, and a relatively larger square building block piece.

[0235] The large square building block has a side length approximately twice that of the square sheet building block in Embodiment 1. Each side of the large square building block has two pairs of positive electrodes 51 and negative electrodes 52. Similar to Embodiment 1, each pair of positive electrodes 51 and negative electrodes 52 is spaced apart by a magnetic attractor 2. The right-angled triangular building block has a right-angled side length approximately equal to that of the square building block in Embodiment 1.

[0236] Since each edge of the shell 1 of the above-mentioned building blocks is provided with at least one pair of electrodes 5 and magnetic components 2, building blocks of different shapes can be freely combined to form diverse shapes through magnetic adsorption. At the same time as magnetic splicing, the magnetic position establishes a conductive path through the electrodes 5. When an external power source is connected, the current can trigger the built-in functional components 6 through these electrode paths, thereby realizing the light-emitting function.

[0237] In this modified example, the other structures are the same as in Example 1.

[0238] Variation Example Thirteen

[0239] This variation is a variation of Embodiment 1. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 1 and the corresponding descriptions are omitted.

[0240] Figure 28 is an example diagram of multiple building blocks being assembled in this variation.

[0241] As shown in Figure 28, the difference from Embodiment 1 is that the building blocks in this modified example include building block pieces of various shapes, including the hexagonal building block piece of Modified Example 11 and the petal-shaped building block piece of Modified Example 8. The side length of the straight edge of the petal-shaped building block piece is approximately equal to the side length of the hexagonal building block piece.

[0242] Since each edge of the shell 1 of the above-mentioned building blocks is provided with at least one pair of electrodes 5 and magnetic components 2, building blocks of different shapes can be freely combined to form diverse shapes through magnetic adsorption. At the same time as magnetic splicing, the magnetic position establishes a conductive path through the electrodes 5. When an external power source is connected, the current can trigger the built-in functional components 6 through these electrode paths, thereby realizing the light-emitting function.

[0243] In this modified example, the other structures are the same as in Example 1.

[0244] Variation Example 14

[0245] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0246] Figure 29 is an exploded view of the structure of the building blocks in this variation.

[0247] As shown in Figure 29, the difference from Embodiment 2 is that in this modified example, the shell 1 is in the shape of an equilateral triangular plate.

[0248] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are equilateral triangular frames that match the housing 1.

[0249] The power supply frame 161 has a three-branched shape with three long strip-shaped frame parts extending from a center, and multiple light-emitting devices 162 are respectively set on each frame part.

[0250] In this modified example, the other structures are the same as in Example 2.

[0251] Variation Example 15

[0252] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0253] Figure 30 is a three-dimensional view of the building block pieces in this variation.

[0254] As shown in Figure 30, the difference from Embodiment 2 is that in this modified example, the housing 1 is in the shape of an elongated triangular sheet. The structures of the electrical connection assembly 4 and the functional assembly 6 can be referred to in Modified Example 6.

[0255] In this modified example, the other structures are the same as in Example 2.

[0256] Variation Example 16

[0257] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0258] Figure 31 is a three-dimensional view of the building block pieces in this variation.

[0259] As shown in Figure 31, the difference from Embodiment 2 is that in this modified example, the housing 1 is in the shape of a right-angled triangular plate. The structures of the electrical connection assembly 4 and the functional assembly 6 can be referred to in Modified Example 7.

[0260] In this modified example, the other structures are the same as in Example 2.

[0261] Variation Example 17

[0262] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0263] Figure 32 is a three-dimensional view of the building block pieces in this variation.

[0264] As shown in Figure 32, the difference from Embodiment 2 is that in this modified example, the housing 1 is petal-shaped, that is, a triangular piece that is curved as a whole, with three edges, one of which is a straight edge and the other two edges are curved edges. The structure of the electrical connection component 4 and the functional component 6 can be referred to in Modified Example 8.

[0265] In this modified example, the other structures are the same as in Example 2.

[0266] Variation Example 18

[0267] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0268] Figure 33 is a three-dimensional view of the building block pieces in this variation.

[0269] As shown in Figure 33, the difference from Embodiment 2 is that in this modified example, the housing 1 is rectangular in shape, and a pair of positive electrodes 51 and negative electrodes 52 are provided in the middle of each of the two opposite sides of the rectangle. The structure of the electrical connection component 4 and the functional component 6 can be referred to in Modified Example 9.

[0270] In this modified example, the other structures are the same as in Example 2.

[0271] Variation Example 19

[0272] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0273] Figure 34 is an exploded view of the structure of the building blocks in this variation.

[0274] As shown in Figure 34, the difference from Embodiment 2 is that in this modified example, the shell 1 is in the shape of a pentagonal plate with five edges, each edge being of equal length.

[0275] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are pentagonal frames that match the housing 1.

[0276] The power supply frame 161 is shaped like a five-pointed star, corresponding to the shape of the housing 1. Each corner of the five-pointed star extends a positive connection end 17 or a negative connection end 18. Multiple light-emitting devices 162 are arranged along the five-pointed star outline of the power supply frame 161.

[0277] In this modified example, the other structures are the same as in Example 2.

[0278] Variation Example 20

[0279] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0280] Figure 35 is an exploded view of the structure of the building blocks in this variation.

[0281] As shown in Figure 35, the difference from Embodiment 2 is that in this modified example, the shell 1 is hexagonal in shape and has six edges. Each edge is of equal length.

[0282] The positive conductive frame 41, the isolation frame 42, and the negative conductive frame 43 are hexagonal frames that match the housing 1.

[0283] The power supply frame 161 is a hexagonal star shape corresponding to the shape of the housing 1. Each corner of the hexagon extends a positive connection end 17 or a negative connection end 18. Multiple light-emitting devices 162 are arranged along the hexagonal star outline of the power supply frame 161.

[0284] In this modified example, the other structures are the same as in Example 2.

[0285] Variation Example 21

[0286] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0287] Figure 36 is an example diagram of multiple building blocks being assembled in this variation.

[0288] As shown in Figure 36, the difference from Embodiment 2 is that the building blocks in this modified example include a variety of different shaped building block pieces, including the square building block piece of Embodiment 2, the right-angled triangular building block piece of Modified Example 16, and a relatively larger square building block piece.

[0289] The large square building block has a side length approximately twice that of the square sheet-like building block in Example 2. Each side of the large square building block has two pairs of positive electrodes 51 and negative electrodes 52, which are arranged close to each other, similar to those in Example 2. The right-angled triangular building block has a right-angled side length approximately equal to that of the square sheet-like building block in Example 1.

[0290] Since each edge of the shell 1 of the above-mentioned building blocks is provided with at least a pair of electrodes 5 and magnetic components 2, building blocks of different shapes can be freely combined to form diverse shapes through magnetic adsorption. At the same time as magnetic splicing, the magnetic position establishes a conductive path through the electrodes 5. When an external power source is connected, the current can trigger the built-in functional components 6 through these electrode paths, thereby realizing the light-emitting function.

[0291] In this modified example, the other structures are the same as in Example 2.

[0292] Variation Example 22

[0293] This variation is a variation of Embodiment 2. In this variation, the same symbols are assigned to the same constituent elements as in Embodiment 2 and the corresponding descriptions are omitted.

[0294] Figure 37 is an example diagram of multiple building blocks being assembled in this variation.

[0295] As shown in Figure 37, the difference from Embodiment 2 is that the building blocks in this modified example include building block pieces of various shapes, including the hexagonal building block piece of Modified Example 20 and the petal-shaped building block piece of Modified Example 17. The side length of the straight edge of the petal-shaped building block piece is approximately equal to the side length of the hexagonal building block piece.

[0296] Since each edge of the shell 1 of the above-mentioned building blocks is provided with at least one pair of electrodes 5 and magnetic components 2, building blocks of different shapes can be freely combined to form diverse shapes through magnetic adsorption. At the same time as magnetic splicing, the magnetic position establishes a conductive path through the electrodes 5. When an external power source is connected, the current can trigger the built-in functional components 6 through these electrode paths, thereby realizing the light-emitting function.

[0297] In this modified example, the other structures are the same as in Example 2.

[0298] The above-mentioned variations 1 to 13 are all variations of Example 1, and the above-mentioned variations 14 to 22 are all variations of Example 2. However, these variations can also be combined with Examples 3 to 6.

[0299] The above embodiments are merely illustrative of specific implementations of the present invention, and the present invention is not limited to the scope of the description of the above embodiments. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Various changes and modifications can be made to the present invention without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A type of building block, characterized in that, include: The housing includes a base and a matching cover plate; Electrical connection components are disposed on the base; as well as The functional components are electrically connected by the electrical connection components. The electrical connection assembly includes a positive conductive frame and one or more positive electrodes disposed on the positive conductive frame, a negative conductive frame and one or more negative electrodes disposed on the negative conductive frame. The functional components are in contact with the positive conductive frame and the negative conductive frame, respectively. The housing has one or more edges for contacting other building blocks, and the edges have multiple electrode receiving notches. The positive electrode and the negative electrode are respectively disposed in the corresponding electrode receiving notches.

2. The building block sheet according to claim 1, characterized in that: in, The edge has multiple facets. Both the positive electrode and the negative electrode have multiple contact surfaces corresponding to the edge facets of the edge portion, and the contact surfaces are exposed from the corresponding electrode receiving notch to the outside of the corresponding edge facets.

3. The building block sheet according to claim 1, characterized in that: in, The edge has an arc surface. Both the positive and negative electrodes have contact surfaces corresponding to the arc surface of the edge, and the contact surfaces are exposed from the corresponding electrode receiving notch to the outside of the arc surface.

4. The building block sheet according to claim 1, characterized in that: in, The housing has multiple snap-fit ​​slots corresponding to the electrode accommodating notches. Both the positive electrode and the negative electrode are block-shaped, and their rear ends are engaged with the housing through the snap-fit ​​groove.

5. The building block sheet according to claim 1, characterized in that: in, The edges consist of multiple lines that form a polygon. The electrical connection assembly further includes an isolation frame disposed between the positive conductive frame and the negative conductive frame to isolate them. The positive conductive frame, the negative conductive frame, and the isolation frame are all matched with the polygon.

6. The building block according to claim 5, characterized in that: in, One of the positive conductive frame / the negative conductive frame and the isolation frame has multiple positioning holes, and the other has multiple positioning posts that match the positioning holes. The positive electrode conductive frame has a negative electrode clearance notch corresponding to the negative electrode, used to avoid the negative electrode. The negative electrode conductive frame has a positive electrode clearance notch corresponding to the positive electrode, used to avoid the positive electrode.

7. The building block sheet according to claim 5, characterized in that: in, The positive conductive frame and the plurality of positive electrodes are integrally formed, and at least a portion of the outer surface of the positive conductive frame and at least a portion of the outer surface of the positive electrodes are made of conductive material. The negative electrode conductive frame and the plurality of negative electrodes are integrally formed, and at least a portion of the outer surface of the negative electrode conductive frame and at least a portion of the outer surface of the negative electrodes are made of conductive material. At least a portion of the outer surface of the isolation frame is an insulating material, or the isolation frame is made of an insulating material.

8. The building block according to claim 1, characterized in that, Also includes: Multiple magnetic components, Each of the edges is provided with a pair of magnetic attractors for adsorbing and engaging with the edge of another building block. The pair of magnetic attractors are arranged in the corresponding edges in a complementary polarity manner.

9. The building block sheet according to claim 1, characterized in that: in, The edge has a fitting structure for splicing and combining with the edge of another building block that has a corresponding fitting structure.

10. The building block according to any one of claims 5-9, Its features are: The building blocks are functional building blocks. The functional components include: A power supply frame has one or more positive connection terminals and one or more negative connection terminals, respectively used to contact the positive conductive frame and the negative conductive frame to achieve electrical connection; and One or more functional electrical components are mounted on the power supply rack. The functional electrical device is any one or a combination of two or more of the following: light-emitting device, sound-emitting device, and acousto-optic device.

11. The building block according to claim 10, characterized in that: in, The positive electrode conductive frame has one or more positive electrode contact protrusions disposed on one side facing the isolation frame. The negative electrode conductive frame has one or more negative electrode contact protrusions disposed on one side facing the isolation frame. The isolation frame has a positive electrode groove that matches the positive electrode contact protrusion and a negative electrode groove that matches the negative electrode contact protrusion. The positive connection terminal is disposed in the positive electrode groove, and contacts the positive electrode contact protrusion by engaging with the positive electrode groove. The negative connection end is disposed in the negative electrode groove, and the negative electrode contact protrusion is in contact with the negative electrode contact protrusion by fitting into the negative electrode groove.

12. The building block according to claim 10, characterized in that: in, The functional electrical components are multiple, and they are light-emitting devices. The power supply frame is in the form of a strip, cross, star, polygon, or a combination thereof. Multiple light-emitting devices are arranged along the outline of the power supply frame.

13. The building block according to any one of claims 1-9, characterized in that: in, The building blocks are power supply building blocks. The functional component includes an energy storage device disposed inside the electrical connection component.

14. The building block according to claim 13, characterized in that: in, The functional components also include a circuit board electrically connected to the energy storage device. The circuit board has at least a power switch and a charging interface. The housing has clearance holes that match the switch button and the charging interface, with the switch button and the charging interface protruding from the clearance holes.

15. A type of building block, characterized in that, include: Multiple building blocks, Among them, several of the building blocks serve as functional building blocks. Several of the aforementioned building blocks serve as power supply blocks, used to power the functional building blocks. The building block is the building block described in any one of claims 1-14. The functional building block is the building block according to any one of claims 10-12. The power supply building block is the building block as described in claim 13 or 14.

16. The building blocks according to claim 15, characterized in that: in, The functional building blocks are in multiple quantities. When two functional building blocks are assembled, the angle between two adjacent surfaces is between 0 and 360 degrees, and the positive and negative electrodes of the two functional building blocks are in contact with each other respectively.

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