Joint building block structure and toy

Abstract

The invention relates to the technical field of toys, and provides a joint building block structure and a toy, the joint building block structure can be switched between a complete stretching state and a complete bending state, the joint building block structure comprises a first joint head, a building block part and a second joint head, one end of the first joint head and one end of the second joint head can be spliced together to form a joint, and the building block part is connected with the joint. The building block pieces are arranged outside the joints and enable the joints not to be detached. The first joint head, the limiting plate and the second joint head are designed to be of a non-detachable structure, the joint function is achieved, meanwhile, the limiting function can be achieved, the stability of the joint is improved, partial embarrassment can be covered, the attractiveness of the toy is improved, the visual simulation degree is high, and interestingness is good.

Description

Technical Field

[0001] The present invention relates to the technical field of toys, and in particular to a joint building block structure and a toy. Background Art

[0002] The joints of various existing puppet toys are usually designed as movable structures to increase the fun, so as to adjust the posture of the toys and improve the ornamental value. The joints of building block joint toys are formed by splicing. The joint structure formed by splicing often cannot be well solved by damping alone to increase the stability, so there is a defect of poor stability. At the same time, the joints formed by splicing building blocks and building blocks, the parts of the two joint parts that cooperate with each other when the joints rotate will be exposed to the outside, which has the problem of unsightly appearance. Therefore, it is urgent to design a new structure to solve the above defects. Summary of the invention

[0003] In view of the defects in the prior art, an object of the present invention is to provide a joint building block structure and a toy.

[0004] A joint building block structure provided by the present invention can be switched between two states of full extension and bending, comprising a first joint head, a building block and a second joint head, one end of the first joint head and one end of the second joint head can be spliced ​​together to form a joint, and the building block is arranged outside the joint so that the joint cannot be disassembled;

[0005] When the first joint head and the second joint head are driven to rotate and extend relative to each other, when both sides of the first joint head and the second joint head are interfered by the building blocks, the joint building block structure is in a fully extended state; when the first joint head and the second joint head are driven to rotate and approach relative to each other, when the first joint head and the second joint head interfere with each other, the joint building block structure is in a bent state.

[0006] Preferably, the outer surface of the building block has a textured structure.

[0007] Preferably, the building block covers one side of the joint to partially cover the joint.

[0008] Preferably, the building block is covered on one side of the joint by injection molding.

[0009] Preferably, the building block is a semi-enclosed structure.

[0010] Preferably, the cross section of the building block is a U-shaped structure.

[0011] Preferably, the first joint head is provided with a first building block axis, the second joint head is provided with a first building block hole matching the first building block axis, and the two joint heads are formed into the joint by sequential injection molding.

[0012] Preferably, the building block is provided with two building blocks arranged at intervals, both of the two building blocks are provided with second building block holes and are arranged concentrically, and both ends of the first building block axis extend into the two second building block holes respectively so that the joint cannot be disassembled.

[0013] Preferably, the two building blocks are connected via an arc-shaped groove.

[0014] Preferably, the building board is a circular structure.

[0015] Preferably, when the joint building block structure is in a fully extended state, the first joint head and the second joint head are interfered with by the notches at the ends of the two arc-shaped grooves respectively.

[0016] Preferably, the first joint head is provided with a third building block hole, the second joint head is provided with a second building block shaft matching the third building block hole, and the two joint heads are formed into the joint by sequential injection molding.

[0017] Preferably, two building blocks arranged at intervals are provided on the building block, and second building block holes are provided on both of the two building blocks and are arranged concentrically, and the end of the second building block shaft extends into the second building block hole.

[0018] Preferably, a fan-shaped annular groove is provided at the end of the second building block shaft, a limiting edge is provided on the building block board and the limiting edge extends into the interior of the second building block hole, and when the second joint head rotates relative to the first joint head, the fan-shaped annular groove rotates relative to the limiting edge.

[0019] Preferably, the rotation is sliding.

[0020] Preferably, when the limiting edge contacts and abuts against the inner wall of one end of the fan annular groove, it can drive the building blocks to rotate synchronously until the joint building block structure is in the bent state.

[0021] Preferably, the other end of the first joint head is spliced ​​with a first building block outer shell, and the other end of the second joint head is spliced ​​with a second building block outer shell.

[0022] Preferably, when the joint building block structure is in a bent state, the joint is completely shielded.

[0023] Preferably, when the joint building block structure is in a bent state, a player is allowed to observe part or all of the outer surface of the building block.

[0024] Preferably, the other end of the first joint head and the other end of the second joint head are both splicing shafts, and the first building block shell and the second building block shell are both provided with splicing holes matching the splicing shafts.

[0025] Preferably, a flange is provided on the splicing shaft, and a groove matching the flange is provided inside the splicing hole.

[0026] Preferably, when switching from the fully extended state to the bent state, the second building block outer shell can drive the building block pieces to rotate synchronously.

[0027] Preferably, the outer side surface of the building block facing one end of the second building block shell is provided with a first outer flange, and the inner side surface of one end of the second building block shell is provided with a first inner flange. When switching from a fully extended state to a bent state, the second building block shell can drive the building blocks to rotate synchronously by abutting against the first outer flange through the first inner flange.

[0028] Preferably, the outer side surface of the building block facing one end of the first building block outer shell is provided with a second outer flange, and the inner side surface of one end of the first building block outer shell is provided with a second inner flange. When switching from a fully extended state to a bent state, when the second inner flange abuts against the second outer flange, the joint building block structure is in a bent state.

[0029] Preferably, the axis of the first joint head is the first axis, and the axis of the second joint head is the second axis. When the joint rotates so that the first axis is parallel to the second axis, there is an offset distance between the first axis and the second axis.

[0030] Preferably, one end of the first joint head and / or the second joint head away from the joint is a curved structure.

[0031] Preferably, the curved structure includes a skeleton connecting section, an intermediate transition section and a joint connecting section, the joint connecting section is connected to the joint, one end of the intermediate transition section is connected to the skeleton connecting section, and the other end of the intermediate transition section is connected to the joint connecting section.

[0032] Preferably, the skeleton connecting section is offset relative to the joint connecting section in a direction away from the joint.

[0033] Preferably, the skeleton connection section, the intermediate transition section and the joint connection section are all non-bending structures.

[0034] Preferably, a bending structure is formed between the skeleton connection section and the middle transition section, and between the middle transition section and the joint connection section.

[0035] Preferably, the axis of the skeleton connection section is arranged parallel to the axis of the joint connection section.

[0036] Preferably, the angle formed by the intermediate transition section and the skeleton connection section, and the angle formed by the intermediate transition section and the joint connection section are both obtuse angles.

[0037] Preferably, the skeleton connection section, the intermediate transition section and the joint connection section are integrally injection molded.

[0038] Preferably, the outer diameters of the skeleton connection section, the intermediate transition section, and the joint connection section are the same.

[0039] Preferably, the intermediate transition section smoothly transitions to the parts connected to the skeleton connection section and the joint connection section respectively.

[0040] Preferably, the cross-sections of the skeleton connection section, the intermediate transition section and the joint connection section are all cylindrical, regular polygonal or elliptical.

[0041] Preferably, the first joint head is provided with a first limiting platform, and the second joint head is provided with a second limiting platform. When the joint building block structure is in a bent state, the first limiting platform contacts and abuts against the second limiting platform.

[0042] Preferably, the splicing axis of the first joint head and the splicing axis of the second joint head are located in the same plane.

[0043] Preferably, the first joint head has a first positioning platform, and the second joint head has a second positioning platform. When the joint building block structure is in a fully extended state, the first positioning platform contacts and abuts against the second positioning platform.

[0044] A toy provided according to the present invention comprises the joint building block structure.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The building blocks of the present invention are integrally injection molded on the outside of the first joint head and the second joint head, so that the first joint head, the building blocks and the second joint head form a non-detachable structure, avoiding the generation of small parts and making the structure more concise. While realizing the joint function, the external part of the joint building block structure can be presented through the outer surface of the building blocks, simulating the real external state of the toy joint. At the same time, the building blocks can cover the rotating part of the joint, realizing the function of concealing ugliness, increasing the visual simulation degree of the toy, improving the visual beauty of the toy, and greatly increasing the fun of the toy.

[0047] 2. The joint building block structure of the present invention can realize a precise limiting function through the cooperation between the building block and the joint head or between the building block and the building block cover, so that the rotation angle range of the joint is accurately controlled within the set range, thereby increasing the stability and feel of the joint and increasing the fun of the toy. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0049] Figure 1 It is a schematic diagram of the structure explosion of the present invention;

[0050] Figure 2 for Figure 1 Schematic diagram of the structural section;

[0051] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention when it is in a fully extended state;

[0052] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention when it is between a fully extended state and a bent state;

[0053] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention when it is in a bent state;

[0054] Figure 6 It is a schematic diagram of the side structure of the present invention when it is in a fully extended state;

[0055] Figure 7 It is a schematic diagram of the side structure of the present invention when it is between a fully extended state and a bent state;

[0056] Figure 8 It is a schematic diagram of the side structure of the present invention when it is in a bent state;

[0057] Fig. 9 for Figure 6 Schematic diagram of the structural section;

[0058] Fig.10 for Figure 7 Schematic diagram of the structural section;

[0059] Fig.11 for Figure 8 Schematic diagram of the structural section;

[0060] Fig.12 is a schematic cross-sectional view of the structure of Embodiment 2 of the present invention in a fully extended state;

[0061] Fig.13 It is a schematic cross-sectional view of the structure when the device is rotated from a fully extended state to a bent state by a first angle in Embodiment 2 of the present invention;

[0062] Fig.14 is a schematic cross-sectional view of the structure when the second angle is rotated from the fully extended state to the bent state in Embodiment 2 of the present invention, wherein the second angle is greater than the first angle;

[0063] Fig.15 is a schematic cross-sectional view of the structure in a bent state in Embodiment 2 of the present invention;

[0064] Fig.16is a schematic diagram of the structure in the fully extended state in Example 3;

[0065] Fig.17 is a schematic diagram of the structure in Example 3 between a fully extended state and a bent state;

[0066] Fig.18 is a schematic diagram of the structure in a bent state in Example 3;

[0067] Fig.19 It is a structural schematic diagram of a curved structure;

[0068] Fig. 20 Schematic diagram for comparing the positions of the upper frame and the lower frame in the prior art, wherein the dotted line in the figure is a vertical line for reference, (1) the lower end of the middle upper frame and the upper end of the lower frame are basically in vertical alignment, (2) the lower end of the middle upper frame and the upper end of the lower frame are staggered, and the horizontal distance between the lower end of the upper frame and the upper end of the lower frame is the distance between the two dotted lines.

[0069] The figure shows:

[0070] First joint head 1

[0071] Splicing axis 11

[0072] Flange 111

[0073] First building block axis 12

[0074] Fan annular groove 121

[0075] The first limiter 13

[0076] The first positioning station 14

[0077] Building Blocks 2

[0078] Building Board 21

[0079] Second building block hole 211

[0080] Limit edge 212

[0081] Arc groove 22

[0082] First outer flange 23

[0083] Second outer flange 24

[0084] Second joint head 3

[0085] First building block hole 31

[0086] The second limiter 32

[0087] Second positioning stage 33

[0088] Second building block axis 34

[0089] Fan annular groove 341

[0090] First building block coat 4

[0091] Splicing hole 41

[0092] Groove 411

[0093] Second inner flange 42

[0094] Second building block coat 5

[0095] First inner flange 51

[0096] Skeleton connection section 101

[0097] Intermediate transition section 102

[0098] Joint connection section 103 DETAILED DESCRIPTION

[0099] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0100] Embodiment 1:

[0101] The present invention provides a joint building block structure that can switch between two states of full extension and bending, such as Figure 1 Figure 2 As shown, it includes a first joint head 1, a building block 2 and a second joint head 3. One end of the first joint head 1 and one end of the second joint head 3 can be spliced ​​together to form a joint. The building block 2 is arranged on the outside of the joint so that the joint cannot be disassembled. The building block 2 is wrapped on one side of the joint so that the building block 2 partially covers the joint, so that the building block 2 can cover part of the joint when observed from the outside, so that the rotation of the joint is partially or completely hidden, which increases the beauty of the toy. Specifically, the building block 2 can be designed as a semi-enclosed structure, for example, the cross section of the building block 2 is a U-shaped structure. At the same time, the outer surface of the building block 2 can be provided with a texture structure to simulate the real structure outside the joint, which can increase the simulation degree of the structure. Taking the knee joint as an example, the texture structure on the outer surface of the building block 2 can be designed to simulate the texture and color of the outside of the knee, which can present the appearance of a real knee when observed from the outside, which can increase the realism of the knee and improve the simulation effect.

[0102] It should be noted that the first joint head 1, the building block 2 and the second joint head 3 in the present invention are preferably three-color injection molded and formed as one piece. Specifically, during the injection molding, the injection molding of the first joint head 1 is completed first, and then the injection molding of the second joint head 3 is completed, and finally the injection molding of the building block 2 is performed, so that the stability of the entire structure is better.

[0103] like Figure 4 , Figure 7 , Fig.10 As shown, when the first joint head 1 and the second joint head 3 are driven to rotate and extend relative to each other, when both sides of the first joint head 1 and the second joint head 3 are interfered by the building blocks 2, the joint building block structure is in a fully extended state, as shown in FIG. Figure 3 , Figure 6 , Fig. 9 When the first joint head 1 and the second joint head 3 are driven to rotate relatively close to each other, when the first joint head 1 and the second joint head 3 interfere with each other, the joint building block structure is in a bent state, such as Figure 5 , Figure 8 , Fig.11 shown.

[0104] like Figure 1 Figure 2 As shown, two building blocks 21 arranged at intervals are provided on the building block 2, and the two building blocks 21 are both provided with second building block holes 211 and are arranged concentrically, and the two ends of the first building block axis 12 extend into the two second building block holes 211 respectively, so that the joint cannot be disassembled. In practical applications, the building block 2 is preferably coated on one side of the joint by injection molding. Specifically, during injection molding, the injection molding of the first joint head 1 is completed first, and then the injection molding of the second joint head 3 is completed, and finally the injection molding of the building block 2 is performed, so that the building block 2 is half coated on the outside of the joint. The two building blocks 21 are connected by an arc groove 22, and the building blocks 21 are circular structures. When the joint building block structure is in a fully extended state, the first joint head 1 and the second joint head 3 are interfered by the end notches of the two arc grooves 22.

[0105] It should be noted that the first joint head 1 has a first positioning platform 14, and the second joint head 3 has a second positioning platform 33. When the joint building block structure is in a fully extended state, the first positioning platform 14 contacts and abuts against the second positioning platform 33. At the same time, the first joint head 1 has a first limiting platform 13, and the second joint head 3 has a second limiting platform 32. When the joint building block structure is in a bent state, the first limiting platform 13 contacts and abuts against the second limiting platform 32. Therefore, the joint itself can limit the angle when fully extended and bent by relying solely on the positioning platform and limiting platform set by itself, which improves the fun of the toy.

[0106] like Figure 1 , Figure 2As shown, the other end of the first joint head 1 is spliced ​​with a first building block jacket 4, and the other end of the second joint head 3 is spliced ​​with a second building block jacket 5. The design of the first building block jacket 4 and the second building block jacket 5 allows the exterior of the skeleton to change the external shape of the toy through the building block jacket, so that the toy can be presented in different shapes to meet the needs of toy fun. When the joint building block structure is in a bent state, the joint is completely blocked by the building block jacket and the building block 2. At this time, the player is allowed to observe part or all of the outer surface of the building block 2, so that the simulation degree of the exterior of the joint building block structure is higher, which increases the fun of the toy.

[0107] Furthermore, the other end of the first joint head 1 and the other end of the second joint head 3 are both splicing shafts 11, and the first building block jacket 4 and the second building block jacket 5 are both provided with splicing holes 41 matching the splicing shafts 11. The first building block jacket 4 is spliced ​​to the outside of the splicing shaft 11 through the splicing holes 41, and the second building block jacket 5 is spliced ​​to the outside of the splicing shaft 11 through the splicing holes 41. The operation is simple and the splicing is convenient.

[0108] In order to increase the stability and feel of the structure, a flange 111 is provided on the splicing shaft 11, and a groove 411 matching the flange 111 is provided inside the splicing hole 41. When splicing, the outer diameter of the flange 111 is slightly larger than the inner diameter of the splicing hole 41, so that there is a certain resistance during splicing. When the flange 111 reaches the groove 411, a crisp snapping sound is emitted, indicating that the flange 111 has entered the groove 411, prompting the player that it has been spliced ​​into place.

[0109] A first building block axis 12 is arranged on the first joint head 1, and a first building block hole 31 matching the first building block axis 12 is arranged on the second joint head 3. The two joint heads form a joint by injection molding in sequence. Both ends of the first building block axis 12 protrude to the outside of both sides of the joint for connection with the building block 2.

[0110] In order to increase the aesthetics, the splicing axis 11 of the first joint head 1 and the splicing axis 11 of the second joint head 3 are located in the same plane, that is, the movement trajectories of the axes when the structures at both ends of the joint are bent and stretched are on the same plane, which increases the simulation of the toy.

[0111] The present invention also provides a toy, including a joint building block structure, which can be applied to the knee joint of a human body, such as Figure 3 to Figure 11 As shown, different postures of the thigh, calf and knee joint are displayed, making the entire structure more realistic and enhancing the fun and luxury of the toy.

[0112] Embodiment 2:

[0113] This embodiment is different from Embodiment 1 in that Fig.12 , Fig.13 , Fig.14 , Fig.15 As shown, when switching from the fully extended state to the bent state, the second building block cover 5 can drive the building block 2 to rotate synchronously. Specifically, the outer side surface of the building block 2 facing the second building block cover 5 is provided with a first outer flange 23, the outer side surface of the building block 2 facing the first building block cover 4 is provided with a second outer flange 24, the inner side surface of the second building block cover 5 is provided with a first inner flange 51, and the inner side surface of the first building block cover 4 is provided with a second inner flange 42. When switching from the fully extended state to the bent state, the second building block cover 5 can drive the building block 2 to rotate synchronously by abutting against the first outer flange 23 through the first inner flange 51. When the second inner flange 42 abuts against the second outer flange 24, the joint building block structure is in a bent state. Therefore, in the whole process of switching between the fully extended state and the bent state of the joint building block structure, the building block 2 is seamlessly matched with the first building block shell 4 and the second building block shell 5 respectively, so that the whole structure displays the outer side of the joint through the three structures of the building block 2, the first building block shell 4 and the second building block shell 5, which has the effect of concealing the ugliness and can display the outer surface of the building block 2, thereby greatly improving the fun of the toy.

[0114] Embodiment 3:

[0115] This embodiment is different from Embodiment 1 in that Fig.16 , Fig.17 , Fig.18 As shown, the first joint head 1 is provided with a third building block hole, the second joint head 3 is provided with a second building block shaft 34 matching the third building block hole, and the first joint head 1 and the second joint head 3 are formed into a joint by sequential injection molding. The building block 2 is provided with two building blocks 21 arranged at intervals, and the two building blocks 21 are both provided with second building block holes 211 and arranged concentrically, and the end of the second building block shaft 34 extends into the second building block hole 211, so that the building block 2 is arranged outside the joint through the second building block shaft 34.

[0116] Furthermore, a fan-shaped annular groove 341 is provided at the end of the second building block shaft 34, and a limiting edge 212 is provided on the building block board 21, and the limiting edge 212 extends to the inside of the second building block hole 211. When the second joint head 3 rotates relative to the first joint head 1, the fan-shaped annular groove 341 rotates relative to the limiting edge 212. When the end of the limiting edge 212 contacts and abuts against the inner wall of the fan-shaped annular groove 341, the limiting edge 212 is driven by the fan-shaped annular groove 341 to rotate synchronously, thereby achieving the effect of driving the building block 2 to rotate synchronously until the joint building block structure is in a bent state.

[0117] Embodiment 4:

[0118] The present embodiment is different from the embodiment 1 in that the axis of the first joint head 1 is the first axis L1, and the axis of the second joint head 3 is the second axis L2. When the joint rotates so that the first axis is parallel to the second axis, there is an offset distance d between the first axis and the second axis. The offset distance is designed so that the ends of the first joint head 1 and the second joint head 3 that are separated from each other are offset and staggered one after the other, so that the thigh and the calf are staggered front and back, and the beauty of the female body formed by the backward bending of the calf can be fully displayed, which greatly enhances the fun of the toy. The design of the offset distance can solve the problem of difficult joint connection caused by the misaligned design of the upper skeleton and the lower skeleton. Specifically, Fig. 20 The design shown in (2) is to increase the beauty of the legs. The lower leg is bent backwards so that the entire lower leg is positioned backwards compared to the original design. This structure is more convenient when the legs are posed. Fig. 20 The existing design in (1) is more beautiful and increases visual beauty. Fig. 20 (2) The staggered design of the upper and lower skeletons can show the beauty of the leg body, but the existing joint connection method cannot achieve splicing due to the misalignment when connecting building blocks. The axis offset distance of the two joint heads in this embodiment can just solve the problem of difficult skeleton connection caused by the above-mentioned staggered design, and the structure is simple and easy to implement.

[0119] In this embodiment, the first joint head 1 and / or the second joint head 3 has a curved structure at one end away from the joint, and the curved structure includes a skeleton connection section 101, an intermediate transition section 102 and a joint connection section 103. Fig.16 , Fig.19 As shown, the joint connecting section 103 is connected to the joint, one end of the intermediate transition section 102 is connected to the skeleton connecting section 101, and the other end of the intermediate transition section 102 is connected to the joint connecting section 103. The skeleton connecting section 101 is offset in the direction away from the joint relative to the joint connecting section 103. The design of the curved structure also causes the end of the joint head to be offset. The overall structure of the joint part formed by the offset distance between the first axis and the second axis can perfectly present the beauty of the lower leg bending backwards, thereby increasing the fun of the toy.

[0120] In this embodiment, the skeleton connection section 101, the intermediate transition section 102, and the joint connection section 103 are all non-bending structures. Bending structures are formed between the skeleton connection section 101 and the intermediate transition section 102, and between the intermediate transition section 102 and the joint connection section 103. The combination of the two bending structures presents an overall offset of the curved structure.

[0121] In practical applications, the outer diameters of the skeleton connection section 101, the intermediate transition section 102, and the joint connection section 103 are the same, and the intermediate transition section 102 is smoothly connected to the skeleton connection section 101 and the joint connection section 103. It should be noted that the cross-sections of the skeleton connection section 101, the intermediate transition section 102, and the joint connection section 103 can be designed in a variety of shapes, such as cylindrical, regular polygonal, or elliptical, etc., which can be flexibly selected according to the actual application scenario.

[0122] In this embodiment, the intermediate transition section 102 and the skeleton connection section 101 form an angle θ1, and the intermediate transition section 102 and the joint connection section 103 form an angle θ2. Fig.19 As shown, θ1 and θ2 can be designed to be a right angle or an obtuse angle, preferably an obtuse angle, and the axis of the skeleton connection section 101 and the axis of the joint connection section 103 are preferably arranged in parallel.

[0123] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0124] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A joint building block structure, characterized in that: The device is capable of switching between two states, namely, fully extended and bent, and comprises a first joint head (1), a building block (2), and a second joint head (3); one end of the first joint head (1) and one end of the second joint head (3) can be spliced ​​together to form a joint; the building block (2) is arranged outside the joint and makes the joint unable to be disassembled; When the first joint head (1) and the second joint head (3) are driven to rotate and extend relative to each other, when both sides of the first joint head (1) and the second joint head (3) are interfered by the building blocks (2), the joint building block structure is in a fully extended state; when the first joint head (1) and the second joint head (3) are driven to bend, when the first joint head (1) and the second joint head (3) interfere with each other, the joint building block structure is in a bent state.

2. The joint building block structure according to claim 1, characterized in that: The outer surface of the building block (2) has a textured structure. Preferably, the building block (2) covers one side of the joint to partially cover the joint. Preferably, the building block (2) covers one side of the joint by injection molding. Preferably, the building block (2) is a semi-enclosed structure. Preferably, the cross-section of the building block (2) is a U-shaped structure.

3. The joint building block structure according to claim 1, characterized in that: The first joint head (1) is provided with a first building block axis (12), and the second joint head (3) is provided with a first building block hole (31) matching the first building block axis (12), and the two joint heads are formed into the joint by injection molding. Preferably, the building block (2) is provided with two building block boards (21) arranged at intervals, and the two building block boards (21) are both provided with second building block holes (211) and are arranged concentrically, and the two ends of the first building block axis (12) extend into the two second building block holes (211) respectively so that the joint cannot be disassembled. Preferably, the two building block boards (21) are connected by an arc groove (22). Preferably, the building block board (21) is a circular structure. Preferably, when the joint building block structure is in a fully extended state, the first joint head (1) and the second joint head (3) are interfered by the end notches of the two arc grooves (22). Preferably, the first joint head (1) is provided with a third building block hole, the second joint head (3) is provided with a second building block shaft (34) matching the third building block hole, and the two joint heads are formed by sequential injection molding to form the joint. Preferably, the building block (2) is provided with two building block boards (21) arranged at intervals, both of the two building block boards (21) are provided with second building block holes (211) and are arranged concentrically, and the end of the second building block shaft (34) extends into the second building block hole (211). Preferably, the end of the second building block shaft (34) is provided with a fan-shaped annular groove (341), the building block board (21) is provided with a limiting edge (212), and the limiting edge (212) extends to the inside of the second building block hole (211), and when the second joint head (3) rotates relative to the first joint head (1), the fan-shaped annular groove (341) rotates relative to the limiting edge (212). Preferably, the rotation is sliding. Preferably, when the limiting edge (212) contacts and abuts against the inner wall at one end of the fan annular groove (341), it can drive the building block (2) to rotate synchronously until the joint building block structure is in the bent state.

4. The joint building block structure according to claim 1, characterized in that: The other end of the first joint head (1) is spliced ​​with a first building block cover (4), and the other end of the second joint head (3) is spliced ​​with a second building block cover (5). Preferably, when the joint building block structure is in a bent state, the joint is completely blocked. Preferably, when the joint building block structure is in a bent state, the player is allowed to observe part or all of the outer surface of the building block (2). Preferably, the other end of the first joint head (1) and the other end of the second joint head (3) are both splicing shafts (11), and the first building block cover (4) and the second building block cover (5) are both provided with splicing holes (41) matching the splicing shaft (11). Preferably, a flange (111) is provided on the splicing shaft (11), and a groove (411) matching the flange (111) is provided inside the splicing hole (41). Preferably, when switching from a fully extended state to a bent state, the second building block cover (5) can drive the building block (2) to rotate synchronously. Preferably, the outer side surface of the building block (2) facing one end of the second building block cover (5) is provided with a first outer flange (23), and the inner side surface of the second building block cover (5) is provided with a first inner flange (51). When switching from the fully extended state to the bent state, the second building block cover (5) can drive the building block (2) to rotate synchronously by abutting against the first outer flange (23) through the first inner flange (51). Preferably, the outer side surface of the building block (2) facing one end of the first building block cover (4) is provided with a second outer flange (24), and the inner side surface of the first building block cover (4) is provided with a second inner flange (42). When switching from the fully extended state to the bent state, when the second inner flange (42) abuts against the second outer flange (24), the joint building block structure is in a bent state.

5. The joint building block structure according to claim 1, characterized in that: The axis of the first joint head (1) is the first axis, and the axis of the second joint head (3) is the second axis. When the joint rotates so that the first axis is parallel to the second axis, there is an offset distance between the first axis and the second axis. Preferably, the end of the first joint head (1) and / or the second joint head (3) away from the joint is a curved structure. Preferably, the curved structure includes a skeleton connecting section (101), an intermediate transition section (102) and a joint connecting section (103), wherein the joint connecting section (103) is connected to the joint, one end of the intermediate transition section (102) is connected to the skeleton connecting section (101), and the other end of the intermediate transition section (102) is connected to the joint connecting section (103). Preferably, the skeleton connecting section (101) is offset relative to the joint connecting section (103) in a direction away from the joint. Preferably, the skeleton connecting section (101), the intermediate transition section (102) and the joint connecting section (103) are all non-curved structures. Preferably, a bending structure is formed between the skeleton connection section (101) and the intermediate transition section (102), and between the intermediate transition section (102) and the joint connection section (103). Preferably, the axis of the skeleton connection section (101) is arranged parallel to the axis of the joint connection section (103). Preferably, the angle formed by the intermediate transition section (102) and the skeleton connection section (101), and the angle formed by the intermediate transition section (102) and the joint connection section (103) are both obtuse angles.

6. The joint building block structure according to claim 5, characterized in that: The skeleton connection section (101), the intermediate transition section (102), and the joint connection section (103) are integrally injection molded. Preferably, the outer diameters of the skeleton connection section (101), the intermediate transition section (102), and the joint connection section (103) are the same. Preferably, the intermediate transition section (102) has a smooth transition to the parts connected to the skeleton connection section (101) and the joint connection section (103), respectively. Preferably, the cross-sections of the skeleton connection section (101), the intermediate transition section (102), and the joint connection section (103) are all cylindrical, regular polygonal, or elliptical.

7. The joint building block structure according to claim 1, characterized in that: The first joint head (1) is provided with a first limiting platform (13), and the second joint head (3) is provided with a second limiting platform (32). When the joint building block structure is in a bent state, the first limiting platform (13) and the second limiting platform (32) are in contact with each other.

8. The joint building block structure according to claim 1, characterized in that: The splicing axis (11) of the first joint head (1) and the splicing axis (11) of the second joint head (3) are located in the same plane.

9. The joint building block structure according to claim 1, characterized in that: The first joint head (1) has a first positioning platform (14), and the second joint head (3) has a second positioning platform (33). When the joint building block structure is in a fully extended state, the first positioning platform (14) and the second positioning platform (33) are in contact with each other.

10. A toy, characterized in that: A joint building block structure comprising any one of claims 1 to 9.

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