Toy component and airplane toy

By designing a driving component to power the engine components of the toy model, dynamic operation is achieved, solving the problem that the radial engine cannot operate dynamically. This enhances the toy's aesthetics and playability, and also provides educational value.

CN224207377UActive Publication Date: 2026-05-08JIANGSU RUOZHEN CULTURAL & CREATIVE CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU RUOZHEN CULTURAL & CREATIVE CO LTD
Filing Date
2025-05-21
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

The radial engines in existing toy models cannot achieve the automatic dynamic working mode of multi-cylinder planetary engines, resulting in insufficient aesthetics and playability, and failing to effectively popularize the working principle of engines.

Method used

A toy component was designed, including an engine model, a main shaft, a drive unit, and a connecting mechanism. The main shaft is driven to rotate by a motor, which in turn drives the crank and piston components to reciprocate within the cylinder, enabling the engine to operate dynamically. A propeller and support unit are set on one side of the engine to drive the propeller to rotate, enhancing its aesthetics and playability.

Benefits of technology

It realizes the dynamic working mode of toy models, improving their aesthetics and playability, while also having a strong educational function, demonstrating the working principle of engines.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224207377U_ABST
    Figure CN224207377U_ABST
Patent Text Reader

Abstract

The utility model discloses a toy part and an airplane toy, which are characterized in that the toy part comprises an engine model, a main shaft and a driving part, the engine model comprises a main shell, a crank part and at least three cylinder bodies, a movable piston part is arranged in each cylinder body, two ends of the crank part are rotatably connected with the main shell, the main shaft is connected with the main shell, and the driving part is connected with the main shell. A connecting disc is rotationally arranged on the crank component; each piston component is connected with the connecting disc through a movable connecting rod, and the two ends of each movable connecting rod are rotationally connected with the connecting disc and the corresponding piston component respectively. One end of the main shaft is connected with one end of the crank component; the driving part is configured to drive the main shaft to rotate and drive the crank component to rotate in the main shell, and when the crank component rotates, all the piston components are driven by the connecting disc and the movable connecting rod to reciprocate in the axial direction of the cylinder body. According to the utility model, the aesthetics and playability are improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of toys and models, and more particularly to a toy component and an airplane toy. Background Technology

[0002] Toy models are physical objects made by scaling down or replicating designs to imitate real or fictional objects (such as people, scenes, vehicles, etc.), serving entertainment, collection, and educational functions. For some toy models, such as toy cars and toy airplanes, since the engine is the main power component, the best way to achieve aesthetic appeal and playability is to simulate the engine's movements. However, current technology for planetary engine models only produces static models, unable to achieve the automatic dynamic operation of multi-cylinder planetary engine models. This results in insufficient aesthetics and playability for the toys. Furthermore, static multi-cylinder planetary engine models, lacking dynamic operation, cannot effectively serve their educational purpose and have poor interactivity. Therefore, solving these technical problems is a direction that those skilled in the art need to address. Summary of the Invention

[0003] The purpose of this utility model is to provide a toy component and an airplane toy, which improves the aesthetics and playability of the toy by using this structure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a toy component, comprising:

[0005] An engine model includes a main housing, a crank assembly disposed within the main housing, and at least three cylinders disposed on the outer surface of the main housing. Each cylinder is fitted with a movable piston assembly. Both ends of the crank assembly are rotatably connected to the main housing, and a connecting plate is rotatably mounted on the crank assembly. Each piston assembly is connected to the connecting plate via a connecting rod, and both ends of the connecting rod are rotatably connected to the connecting plate and the corresponding piston assembly, respectively.

[0006] A main shaft, one end of which is connected to one end of the crank assembly;

[0007] The drive unit is configured to drive the main shaft to rotate and drive the crank assembly to rotate within the main housing. When the crank assembly rotates, it drives all the piston assemblies to reciprocate along the corresponding cylinder axis via the connecting plate and the connecting rod.

[0008] In the above technical solution, the crank component includes a crankshaft and two crank plates, and the two ends of the crankshaft are respectively connected to the inner surfaces of the two crank plates;

[0009] Each crank plate has a connecting shaft on its outer side. The connecting shaft is not coaxial with the crank shaft. The connecting shafts of the two crank plates are coaxial. Each connecting shaft is rotatably connected to the main housing. The main shaft is connected to the connecting shaft on one of the crank plates. The connecting disc is rotatably mounted on the crank shaft.

[0010] In the above technical solution, the connecting plate is provided with a connecting rod shaft that cooperates with the moving connecting rod, and the inner end of the moving connecting rod is rotatably connected to the corresponding connecting rod shaft;

[0011] And / or, an annular groove is provided on the outer surface of the connecting plate, the connecting rod shaft is disposed in the annular groove, the inner end of the moving connecting rod is inserted into the annular groove, and is rotatably connected to the corresponding connecting rod shaft.

[0012] In the above technical solution, the drive unit includes a motor, which is connected to the main shaft via a transmission mechanism;

[0013] And / or, the transmission mechanism includes a first gear and a second gear that mesh with each other, the second gear being mounted on the main shaft and the first gear being mounted on the motor output shaft.

[0014] In the above technical solution, the transmission mechanism further includes a first connecting shaft, with a third gear and a fourth gear respectively provided at both ends of the first connecting shaft. The third gear meshes with the first gear, and the fourth gear meshes with the second gear.

[0015] This utility model also provides an airplane toy, including the toy components described above, which are mounted on a base.

[0016] In the above technical solution, the base is provided with a support part, the middle part of the main shaft is rotatably connected to the support part, one side of the main housing is connected to the side wall of the support part, and the other side of the main housing is also provided with a propeller, the middle part of the propeller is connected to the end of the crank component.

[0017] In the above technical solution, a vertical rod is rotatably mounted on the support part, and the vertical rod is arranged perpendicular to the main shaft;

[0018] The main shaft is provided with a fifth gear, and the outer surface of the upright is provided with a sixth gear that meshes with the fifth gear;

[0019] And / or, a spiral plate is also provided on the outer surface of the upright.

[0020] In the above technical solution, a functional component is also provided. A hollow vertical tube is installed on the base. The bottom of the functional component is movably inserted into the vertical tube. The vertical tube is located beside the main shaft. The functional component is connected to the main shaft via a connecting mechanism. When the main shaft rotates, the functional component moves back and forth along the vertical tube driven by the connecting mechanism.

[0021] In the above technical solution, the connecting mechanism includes a pulley, a belt, and a rocker arm. The pulley is rotatably disposed on the side of the main shaft, and the two ends of the belt are respectively wound around the pulley and the main shaft.

[0022] The end face of the pulley is provided with a first connecting post, and the first connecting post is not coaxial with the pulley;

[0023] The outer surface of the riser is provided with a strip-shaped through groove that communicates with the inside of the riser. A second connecting post is provided in the strip-shaped through groove. The two ends of the rocker are rotatably connected to the first connecting post and the second connecting post, respectively. The second connecting post is located below the functional component, or the second connecting post is connected to the functional component.

[0024] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0025] 1. In this utility model, the drive unit drives the main shaft to rotate. The rotation of the main shaft drives all the piston components in the engine model to move axially back and forth in the cylinder, thereby realizing the automated dynamic operation of the engine model. Compared with the previous static structure, it is more aesthetically pleasing and playable. At the same time, it also has a strong popular science effect.

[0026] 2. In this utility model, a propeller connected to the crank component is set on one side of the engine model, and a vertical rod with a spiral plate is set on the support part. The main shaft drives the rotation of the engine model, propeller and spiral plate, which improves the aesthetics and playability of the airplane toy.

[0027] 3. This utility model also includes a functional component that can drive the functional component to reciprocate and extend when the main shaft rotates, enhancing its aesthetics and playability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the toy component in Embodiment 1 of this utility model;

[0029] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure;

[0030] Figure 3 This is a partial structural schematic diagram of the engine model in Embodiment 1 of this utility model (the main housing and two cylinders are not shown);

[0031] Figure 4 This is a cross-sectional view of the engine model in Embodiment 1 of this utility model;

[0032] Figure 5 This is a half-sectional structural diagram of a toy component in Embodiment 1 of this utility model (with a support and a propeller installed);

[0033] Figure 6 This is a structural schematic diagram of the airplane toy in Embodiment 1 of this utility model;

[0034] Figure 7 This is a partial structural schematic diagram of the airplane toy in Embodiment 1 of this utility model (functional components and base are not shown);

[0035] Figure 8 This is a schematic diagram of the connection between the functional component and the main shaft in Embodiment 1 of this utility model;

[0036] Figure 9 yes Figure 8 A structural diagram from another perspective.

[0037] The components include: 1. Engine model; 11. Main housing; 12. Crank assembly; 13. Cylinder block; 14. Piston assembly; 15. Connecting plate; 16. Connecting rod; 120. Crankshaft; 121. Crank plate; 122. Connecting shaft; 150. Connecting rod shaft; 151. Annular groove.

[0038] 2. Main shaft; 21. Second gear; 22. First connecting shaft; 23. Third gear; 24. Fourth gear; 25. Fifth gear;

[0039] 3. Drive unit; 31. Motor; 32. First gear;

[0040] 4. Support unit; 41. Upright pole; 42. Sixth gear; 43. Spiral plate;

[0041] 5. Base; 51. Propeller; 52. Riser; 53. Strip groove;

[0042] 6. Functional component; 71. Pulley; 72. Belt; 73. Rocker arm; 74. First connecting post; 75. Second connecting post. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0044] Example 1: See Figure 1-9 As shown, a toy component includes:

[0045] Engine model 1 includes a main housing 11, a crank assembly 12 disposed within the main housing 11, and at least three cylinders 13 disposed on the outer surface of the main housing 11. Each cylinder 13 has a movable piston assembly 14 installed within it, which is movably disposed within the cylinder 13. Both ends of the crank assembly 12 are rotatably connected to the main housing 11, and a connecting plate 15 is rotatably mounted on the crank assembly 12. Each piston assembly 14 is connected to the connecting plate 15 via a connecting rod 16, and both ends of the connecting rod 16 are rotatably connected to the connecting plate 15 and the inner end of the corresponding piston assembly 14, respectively.

[0046] Main shaft 2, one end of which is connected to one end of crank assembly 12;

[0047] The drive unit 3 is configured to drive the main shaft 2 to rotate and drive the crank component 12 to rotate within the main housing 11. When the crank component 12 rotates, it drives all the piston components 14 to reciprocate along the corresponding cylinder body 13 axial direction via the connecting plate 15 and the connecting rod 16.

[0048] In this embodiment, a support part 4 is provided. Taking the illustrated direction as an example, the left side of the main housing is mounted on the right side of the support part. The support part can be a hollow housing component. The right end of the main shaft is rotatably connected to the support part, and the drive part is mounted on the support part. The support part can be used to connect the main shaft, the drive part, and the engine model. The engine model is a radial engine model, at least a three-cylinder radial engine model. Preferably, in this embodiment, it is a six-cylinder radial engine model. More preferably, the cylinder block can be made entirely of transparent material, partially of transparent material, or not of transparent material. The main housing can also be made of transparent material, partially of transparent material, or not of transparent material. Preferably, in this embodiment, the cylinder block is made of transparent material, so the movement of the piston component inside the cylinder block can be directly seen from the outside of the cylinder block. Of course, if the main housing is also made of transparent material, the movement of the crank component inside the main housing can also be seen from the outside. When the drive unit drives the main shaft to rotate, since the end of the main shaft is connected to the end of the crank assembly, the rotation of the main shaft will simultaneously drive the crank assembly to rotate within the main housing. The two ends of the crank assembly are rotatably connected to the main housing, and the connecting plate is rotatably mounted on the crank assembly. The axis of the connecting plate is not aligned with the axis of the crank assembly at the rotatable connection point between the crank assembly and the main housing. At the same time, since the two ends of the connecting rod are rotatably connected to the connecting plate and the corresponding piston assembly respectively, the rotation of the crank assembly will cause the connecting plate to make a circular swinging motion around the connection point between the crank assembly and the main housing (the connecting plate will not rotate circumferentially relative to the main housing). This will drive the corresponding piston rod to reciprocate within the cylinder through the connecting rod, thus demonstrating the working state of a radial engine. This not only demonstrates the working principle of a radial engine and serves as an educational tool, but also, as a toy model, it is more aesthetically pleasing and more playable. In this embodiment, the outer surface of the main housing is surrounded by 6 cylinders. The main housing has a cavity inside, the crank assembly is located in the cavity, the cylinder has a chamber, the inner end of the chamber is connected to the cavity, the piston assembly is located in the chamber, one end of the moving connecting rod passes through the chamber and is rotatably connected to the piston assembly, and the other end of the moving connecting rod is rotatably connected to the connecting disc.

[0049] See Figure 3-5 As shown, the crank assembly 12 includes a crankshaft 120 and two crank plates 121, with both ends of the crankshaft 120 connected to the inner surfaces of the two crank plates 121 respectively.

[0050] Each crank plate 121 has a connecting shaft 122 on its outer side. The connecting shaft 122 is not coaxial with the crank shaft 120. The connecting shafts 122 of the two crank plates 121 are coaxial. Each connecting shaft 122 is rotatably connected to the main housing 11. The main shaft 2 is connected to the connecting shaft 122 on one of the crank plates 121. The connecting disc 15 is rotatably mounted on the crank shaft 120.

[0051] The connecting plate 15 is provided with a connecting rod shaft 150 that cooperates with the moving connecting rod 16, and the inner end of the moving connecting rod 16 is rotatably connected to the corresponding connecting rod shaft 150.

[0052] In this embodiment, the right end of the main shaft is connected to the connecting shaft on the left side of the left crank plate (the connecting shaft may not be provided on the left crank plate; a hole can be directly provided on the crank plate, which is coaxial with the connecting shaft of the right crank plate. The right end of the main shaft is inserted into the hole, and the main shaft and the crank plate are connected by bolts). The connecting shaft of the right crank plate is located on the right side of the crank plate. When the main shaft drives the left crank plate to rotate, the crank shaft will rotate in a circular trajectory relative to the connection between the connecting shaft and the main housing. Since the moving connecting rod connects the piston component and the connecting plate, and the piston component is restricted by the cylinder, the connecting plate will be limited by the moving connecting rod. The connecting plate will only follow the crank shaft to move in a circular trajectory. When it moves in a circular trajectory, it will gradually move closer to the corresponding cylinder and away from the corresponding cylinder, thereby driving the corresponding piston component to move axially in the cylinder through the moving connecting rod.

[0053] The piston assembly can adopt a T-shaped structure with a larger outer diameter and a smaller inner diameter. A notch is provided on the inner end face of the piston assembly, and a piston connecting post is provided within the notch. The outer end of each moving connecting rod is rotatably connected to the corresponding piston connecting post, and the inner end of each moving connecting rod is rotatably connected to a connecting rod shaft on the connecting plate. In this embodiment, the outer end of the moving connecting rod is a C-shaped bayonet, which directly engages with the piston connecting post. The C-shaped bayonet and the piston connecting post are rotatably connected, facilitating the assembly of the moving connecting rod.

[0054] See Figure 3 As shown, an annular groove 151 is provided on the outer surface of the connecting plate 15, the connecting rod shaft 150 is disposed in the annular groove 151, the inner end of the moving connecting rod 16 is inserted into the annular groove 151 and is rotatably connected to the corresponding connecting rod shaft 150.

[0055] The annular groove allows the inner end of the moving connecting rod to be directly inserted into the annular groove, facilitating connection with the connecting rod shaft. Furthermore, two connecting discs can be used, with six connecting rod shafts arranged around the outside of the crankshaft, and the two ends of the connecting rod shafts connecting the two connecting discs, thus forming an annular groove between the two connecting discs.

[0056] See Figure 1 , 2 As shown, the drive unit 3 includes a motor 31, which is connected to the main shaft 2 via a transmission mechanism; the motor 31 drives the main shaft 2 to rotate through the transmission mechanism.

[0057] The transmission mechanism includes a first gear 32 and a second gear 21 that mesh with each other. The second gear 21 is mounted on the main shaft 2, and the first gear 32 is mounted on the output shaft of the motor 31. In this configuration, the motor can be arranged parallel to the side of the main shaft. When the motor directly drives the first gear to rotate, the meshing of the first and second gears can drive the main shaft to rotate, thereby driving the crank assembly to rotate and the piston assembly to reciprocate.

[0058] In this embodiment, the transmission mechanism further includes a first connecting shaft 22, with a third gear 23 and a fourth gear 24 respectively provided at both ends of the first connecting shaft 22. The third gear 23 meshes with the first gear 32, and the fourth gear 24 meshes with the second gear 21.

[0059] In this embodiment, the motor is mounted on the support, with its output shaft perpendicular to the main shaft. The motor is positioned below the main shaft for ease of layout. A first connecting shaft is rotatably mounted on the support. The motor drives the first gear to rotate. The meshing of the first and third gears drives the first connecting shaft to rotate, which in turn drives the fourth gear. The meshing of the fourth and second gears synchronously drives the main shaft. This arrangement allows the motor to be positioned perpendicular to the main shaft, facilitating the placement of toy components within other toys and the arrangement of other parts within the toy. In this embodiment, the fourth and second gears are pin gears.

[0060] See Figure 6-9 As shown, this utility model also provides an airplane toy, including the aforementioned toy components, which are mounted on a base 5. In this embodiment, the airplane toy is a Leonardo da Vinci airplane model toy.

[0061] See Figure 6 As shown, the base 5 is provided with a support part 4, the middle part of the main shaft 2 is rotatably connected to the support part 4, one side of the main housing 11 is connected to the side wall of the support part 4, and the other side of the main housing 11 is also provided with a propeller 51, the middle part of the propeller 51 is connected to the end of the crank component 12. Taking the illustrated direction as an example, the left side of the main housing is connected to the right side of the support part, and the propeller is installed on the right side of the main housing.

[0062] In this embodiment, the drive unit is connected to the support unit, and the bottom of the support unit can be directly connected to the base, or the support unit can be connected to the base through the drive unit.

[0063] See Figure 6 , 7 As shown, a vertical rod 41 is also rotatably mounted on the support part 4, and the vertical rod 41 is arranged perpendicular to the main shaft 2;

[0064] The main shaft 2 is provided with a fifth gear 25, and the outer surface of the upright 41 is provided with a sixth gear 42 that meshes with the fifth gear 25.

[0065] In this embodiment, the axes of the fifth gear and the sixth gear are perpendicular to each other, and both the fifth and sixth gears are pin gears. When the drive unit drives the main shaft to rotate, it will synchronously drive the fifth gear to rotate. Due to the meshing of the fifth and sixth gears, the upright rod will also rotate at the same time.

[0066] See Figure 6 , 7 As shown, a spiral plate 43 is also provided on the outer surface of the upright 41. The spiral plate enables the airplane toy to be configured as a Leonardo da Vinci airplane toy.

[0067] See Figure 6 , 8 As shown in Figure 9, a functional component 6 is also provided. A hollow vertical tube 52 is installed on the base 5. The bottom of the functional component 6 is movably inserted into the vertical tube 52. The vertical tube 52 is located beside the main shaft 2. The functional component 6 is connected to the main shaft 2 via a connecting mechanism. When the main shaft 2 rotates, the functional component 6 moves axially along the vertical tube 52 via the connecting mechanism.

[0068] In this embodiment, the top of the functional component is a horn that can emit sound. The upright is set parallel to the support pole and perpendicular to the main shaft. The top of the functional component is positioned above the top of the upright. When the drive unit drives the main shaft to rotate, it simultaneously moves the functional component up and down along the upright via a connecting mechanism, thereby improving the aesthetics and playability of the entire airplane toy when the drive unit is working. Of course, the functional component can also be other than a horn, such as a flag, LED beads, or other components with specific functions.

[0069] See Figure 6 , 8 As shown in Figures 9 and 1, the connecting mechanism includes a pulley 71, a belt 72, and a rocker arm 73. The pulley 71 is rotatably disposed on the side of the main shaft 2, and the two ends of the belt 72 are respectively wound around the pulley 71 and the main shaft 2.

[0070] The end face of the pulley 71 is provided with a first connecting post 74, and the first connecting post 74 is not coaxial with the pulley 71;

[0071] The outer surface of the riser 52 is provided with a strip-shaped through groove 53 that communicates with the interior of the riser 52. A second connecting post 75 is provided in the strip-shaped through groove 53. The two ends of the rocker arm 73 are rotatably connected to the first connecting post 74 and the second connecting post 75, respectively. The second connecting post 75 is located below the functional component 6, or the second connecting post 75 is connected to the functional component 6.

[0072] In this embodiment, the pulley is rotatably mounted on the base, and its axis is parallel to the axis of the main shaft. When the main shaft rotates, it drives the pulley to rotate. The strip-shaped groove is vertically oriented, and its length direction is parallel to the axis of the riser. Since a first connecting post, coaxial with the pulley's axis, is provided on the end face of the pulley, in this embodiment, the first connecting post is located on the right end face of the pulley, near the outer edge of the pulley. The two ends of the rocker arm are rotatably connected to the first connecting post and the second connecting post, respectively. The second connecting post can be connected to a functional component and can also move vertically within the strip-shaped groove, with the functional component positioned above it. In this embodiment, the second connecting post is located within the strip-shaped groove and can move vertically along it, with the bottom of the functional component abutting against the second connecting post. Therefore, when the pulley rotates, the rocker arm drives the second connecting post upward, pushing the functional component upward; when the rocker arm drives the second connecting post downward, the functional component automatically moves downward due to its own weight, ensuring that its bottom always abuts against the second connecting post. This design allows the top of the functional component to move up and down, improving both aesthetics and playability. Furthermore, this method makes the assembly and disassembly of the functional component convenient.

[0073] In this embodiment, the functional component can also be directly set above the riser. The bottom of the functional component is connected to the riser via a movable rod. The lower part of the movable rod is inserted into the riser. The functional component is installed on the top of the movable rod. The movable rod is located above the second connecting column. By moving the second connecting column up and down in the strip groove, the movable rod is pushed up and down, thereby realizing the up and down movement of the functional component.

[0074] In this invention, toy parts can also be installed on other toys that require corresponding engine models, such as boat toys, car toys, and motorcycle toys, which can showcase the aesthetics and playability of the corresponding toys, and also have good educational value.

[0075] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0076] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. For instance, the two components can be mechanically connected by contact or abutting; they can also be directly hooked or connected by an intermediate medium; or they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A toy component, characterized in that: include: An engine model includes a main housing, a crank assembly disposed within the main housing, and at least three cylinders disposed on the outer surface of the main housing. Each cylinder is fitted with a movable piston assembly. Both ends of the crank assembly are rotatably connected to the main housing, and a connecting plate is rotatably mounted on the crank assembly. Each piston assembly is connected to the connecting plate via a connecting rod, and both ends of the connecting rod are rotatably connected to the connecting plate and the corresponding piston assembly, respectively. A main shaft, one end of which is connected to one end of the crank assembly; The drive unit is configured to drive the main shaft to rotate and drive the crank assembly to rotate within the main housing. When the crank assembly rotates, it drives all the piston assemblies to reciprocate along the corresponding cylinder axis via the connecting plate and the connecting rod.

2. The toy component according to claim 1, characterized in that: The crank assembly includes a crankshaft and two crank plates, with both ends of the crankshaft connected to the inner surfaces of the two crank plates respectively. Each crank plate has a connecting shaft on its outer side. The connecting shaft is not coaxial with the crank shaft. The connecting shafts of the two crank plates are coaxial. Each connecting shaft is rotatably connected to the main housing. The main shaft is connected to the connecting shaft on one of the crank plates. The connecting disc is rotatably mounted on the crank shaft.

3. The toy component according to claim 1, characterized in that: The connecting plate is provided with a connecting rod shaft that cooperates with the moving connecting rod, and the inner end of the moving connecting rod is rotatably connected to the corresponding connecting rod shaft; And / or, an annular groove is provided on the outer surface of the connecting plate, the connecting rod shaft is disposed in the annular groove, the inner end of the moving connecting rod is inserted into the annular groove, and is rotatably connected to the corresponding connecting rod shaft.

4. The toy component according to claim 1, characterized in that: The drive unit includes a motor, which is connected to the main shaft via a transmission mechanism; And / or, the transmission mechanism includes a first gear and a second gear that mesh with each other, the second gear being mounted on the main shaft and the first gear being mounted on the motor output shaft.

5. The toy component according to claim 4, characterized in that: The transmission mechanism further includes a first connecting shaft, with a third gear and a fourth gear respectively provided at both ends of the first connecting shaft. The third gear meshes with the first gear, and the fourth gear meshes with the second gear.

6. An airplane toy, characterized in that: Includes a toy component as described in any one of claims 1-5, wherein the toy component is mounted on a base.

7. The airplane toy according to claim 6, characterized in that: The base is provided with a support part, the middle part of the main shaft is rotatably connected to the support part, one side of the main housing is connected to the side wall of the support part, and the other side of the main housing is also provided with a propeller, the middle part of the propeller is connected to the end of the crank component.

8. The airplane toy according to claim 7, characterized in that: A vertical rod is rotatably mounted on the support part, and the vertical rod is arranged perpendicular to the main shaft; The main shaft is provided with a fifth gear, and the outer surface of the upright is provided with a sixth gear that meshes with the fifth gear; And / or, a spiral plate is also provided on the outer surface of the upright.

9. The airplane toy according to claim 6, characterized in that: A functional component is also provided. A hollow vertical tube is installed on the base. The bottom of the functional component is movably inserted into the vertical tube. The vertical tube is located beside the main shaft. The functional component is connected to the main shaft via a connecting mechanism. When the main shaft rotates, the functional component moves back and forth along the vertical tube driven by the connecting mechanism.

10. The airplane toy according to claim 9, characterized in that: The connecting mechanism includes a pulley, a belt, and a rocker arm. The pulley is rotatably disposed beside the main shaft, and the two ends of the belt are respectively wound around the pulley and the main shaft. The end face of the pulley is provided with a first connecting post, and the first connecting post is not coaxial with the pulley; The outer surface of the riser is provided with a strip-shaped through groove that communicates with the inside of the riser. A second connecting post is provided in the strip-shaped through groove. The two ends of the rocker are rotatably connected to the first connecting post and the second connecting post, respectively. The second connecting post is located below the functional component, or the second connecting post is connected to the functional component.