Spliced gear toy

Abstract

The spliced gear toy comprises a plurality of gear pieces and a plurality of splicing pieces, each gear piece comprises a first rotating wheel and a second rotating wheel, a plurality of teeth are annularly distributed on the outer ring of the first rotating wheel, a connecting cavity is formed in the inner ring of the first rotating wheel, the second rotating wheel is rotationally installed in the connecting cavity, and the splicing pieces are arranged on the second rotating wheel. A plurality of positioning grooves are distributed in the second rotating wheel at intervals; each splicing piece comprises at least two positioning feet which are arranged in parallel, perpendicular to each other or arranged on the same straight line, each positioning foot is detachably inserted and fixed into one positioning groove, and when the two positioning feet of each splicing piece are inserted and fixed into the positioning grooves of any two gear pieces respectively, the positioning feet of each splicing piece are inserted and fixed into the positioning grooves of any two gear pieces. And the teeth of the two gear parts can be kept in a meshed connection state. The splicing pieces in the splicing gear toy are simpler and smaller in structure, the overall thickness cannot be increased too much when the splicing pieces are connected with the gear pieces, the splicing gear toy can be connected between two gear pieces of any size, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of toys, in particular to a spliced gear toy. Background Art

[0002] A gear is a common mechanical transmission element, and its main function is to transmit power to another component to achieve mechanical movement, which is widely used in life. In the prior art, there are gear toys and various accessories for connecting gear toys. For example, a Chinese patent with the publication number CN222218601U discloses a gear building block toy, which includes a base and several gears rotatably inserted on the base. The base is specifically composed of several square splicing blocks, and a second connecting shaft is arranged on the splicing block, and the second connecting shaft is used to cooperate with a connecting hole to connect the gears. That is to say, the above structure requires the gears to be rotatably connected to the splicing blocks, and the gears on adjacent splicing blocks are meshed through the fixation of the splicing blocks. Obviously, the stability of the meshed gears needs to be maintained by the splicing blocks. However, the structure of the splicing blocks is relatively complex, and the connection with the gears makes the whole appear heavy. Moreover, gears of different sizes need to be matched with corresponding sizes of splicing blocks, resulting in the problems of a large variety of splicing components and a structure that is not simple and light enough for the toy. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a spliced gear toy to solve the problems mentioned in the above background art, that is, in the prior art, the splicing blocks of the gear toy have a relatively complex structure, and there are a large variety of splicing components and the structure is not simple and light enough.

[0004] To achieve the above purpose, the utility model provides a spliced gear toy, which includes several gear parts and several splicing parts. Each gear part includes a first runner and a second runner. A plurality of teeth are circumferentially distributed on the outer ring of the first runner, a connecting cavity is arranged on the inner ring of the first runner, the second runner is rotatably installed in the connecting cavity, and a plurality of positioning grooves are spacedly distributed on the second runner; each splicing part includes at least two positioning feet arranged parallel to each other, perpendicular to each other or in the same straight line, and each positioning foot is detachably inserted and fixed in a positioning groove. When the two positioning feet of the splicing part are respectively inserted and fixed in the positioning grooves of any two gear parts, the teeth of the two gear parts can be kept in a meshed connection state.

[0005] As a preferred solution, the connecting cavity includes an opposite closed end and an open end. An axial hole is provided on the closed end or a shaft post protrudes from the closed end towards the open end. The axial hole or the shaft post is located on the central axis of the first runner. A column structure or an opening structure is correspondingly provided on the second runner. The column structure is rotatably inserted into the axial hole, and the shaft post is rotatably inserted into the opening structure.

[0006] As a preferred solution, a snap flange protrudes outward from the end of the shaft post or the column structure. A snap step is formed in the opening structure or the axial hole, and the snap flange is rotatably snap-connected to the snap step.

[0007] As a preferred solution, a plurality of the positioning grooves are symmetrically arranged at the side of the second runner opposite to the closed end. A snap port is provided on the side wall of each positioning groove, and the positioning foot is detachably snap-connected in the snap port.

[0008] As a preferred solution, the splicing member includes a first splicing member and a second splicing member. The first splicing member is composed of two positioning feet fixedly arranged in parallel at both ends of the main body plate. The second splicing member is composed of four positioning feet vertically arranged in a cross shape. At least one side wall of each positioning foot is elastically provided with a snap plate, and the snap plate can be snap-connected in the snap port.

[0009] As a preferred solution, through holes are formed at both ends of the shaft post or the column structure, and a rotating shaft member is detachably connected in the through holes. The rotating shaft member includes a first section and a second section fixedly integrated. The second section is detachably inserted and fixed in the through holes.

[0010] As a preferred solution, the rotating shaft member includes a first rotating shaft member and a second rotating shaft member. The first rotating shaft member is composed of a first section and two second sections fixed at both ends thereof. The second rotating shaft member is composed of a connected first section and a second section. A socket hole is provided in the first section of the second rotating shaft member, and the second section of another rotating shaft member is detachably inserted and fixed in the socket hole.

[0011] As a preferred solution, the through hole is a polygonal hole, and the second section is a prism with a shape matching that of the through hole.

[0012] As a preferred solution, at least one connection hole is provided on the end wall of the closed end. A drawing plate member is detachably connected to the outside of the first runner through the connection hole. A pattern is provided on one side of the drawing plate member, and a connection post protrudes from the other side of the drawing plate member corresponding to the connection hole. The connection post is detachably inserted and fixed in the connection hole.

[0013] As a preferred solution, the gear member includes a first gear member, a second gear member, and a third gear member. The modules of the first runners in the first gear member, the second gear member, and the third gear member are the same, and the pitch circle diameters decrease in sequence. The number of teeth in the first gear member is thirty, and six positioning grooves are evenly distributed in the circumferential direction on the first gear member. The number of teeth in the second gear member is twenty-five, and five positioning grooves are evenly distributed in the circumferential direction on the second gear member. The number of teeth in the third gear member is twenty, and four positioning grooves are evenly distributed in the circumferential direction on the third gear member.

[0014] Therefore, according to the technical means of the present invention, the present invention can achieve at least one of the following beneficial effects: The splicing gear toy provided by the present invention improves the structure of the gear member and simplifies the structure of the splicing member at the same time. The second runner of the gear member is rotatably installed in its first runner, and a plurality of positioning grooves are spaced apart on the second runner. The splicing member is provided to include at least two positioning feet. When the two positioning feet of the splicing member are respectively inserted and fixed in the positioning grooves of any two gear members, the teeth of the two gear members can be kept in a stable meshing state. It can be seen that the splicing gear toy provided by the present invention utilizes the cooperation of the positioning grooves and the positioning feet, so that the splicing member only needs to be provided with at least two positioning feet, thereby making the structure of the splicing member simpler and smaller. When connected to the gear member, it will not overly increase the overall thickness, and can be connected between any two gear members of any size without being set in a size matching manner with the gear member (that is, there is no need to set splicing members of other sizes). It can reduce the types of splicing components of the splicing gear toy, reduce the design and production costs, and at the same time can keep the overall structure of the toy thin, light, and small, which is convenient for storage and carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the splicing gear toy according to an embodiment of the present invention.

[0016] Figure 2 is Figure 1 Schematic diagram of the first gear member in

[0017] Figure 3 is Figure 1 Schematic diagram of the second gear member in

[0018] Figure 4 is Figure 1 Schematic diagram of the third gear member in

[0019] Figure 5 is Figure 1 Schematic diagram of the first splicing member and the second splicing member in

[0020] Figure 6 is Figure 1 Schematic diagram of the first rotating shaft member and the second rotating shaft member in

[0021] Figure 7 For Figure 1 a sectional schematic view when three first gear members are spliced together in the

[0022] In the figure: 110 - first gear member; 120 - second gear member; 130 - third gear member; 101 – first runner; 1011 - teeth; 1012 - connecting cavity; 1013 - shaft post; 1014 - snap flange; 1015 - fixing hole; 1016 - connecting hole; 102 - second runner; 1021 - opening structure; 1022 - snap step; 1023 - positioning groove; 1024 - snap opening; 210 - first splicing member; 220 - second splicing member; 201 - positioning foot; 2011 - snap plate; 202 - main body plate; 310 - first rotating shaft member; 320 - second rotating shaft member; 301 - first section; 3011 - socket hole; 302 - second section; 410 - first drawing board member; 420 - second drawing board member; 430 - third drawing board member; 401 - connecting column. Specific embodiments

[0023] The following further describes in detail the preferred implementation embodiments of the present invention with reference to the accompanying drawings.

[0024] The following details the embodiments of the present invention. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0026] In addition, the terms "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0027] In the present utility model, unless otherwise clearly defined or limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly defined or limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0029] Please refer to Figures 1 to 7, this embodiment provides a spliced gear toy, which includes a plurality of gear parts, a plurality of splicing parts, a plurality of rotating shaft parts and a plurality of drawing board parts. Among them, the gear parts include a first gear part 110, a second gear part 120 and a third gear part 130. The pitch circle diameters of the first runners in the first gear part 110, the second gear part 120 and the third gear part 130 decrease in sequence. That is to say, the size dimensions of the first gear part 110, the second gear part 120 and the third gear part 130 decrease in sequence. The meshing of gear parts with different size dimensions can play a role in changing the transmission ratio and transmission torque of the spliced gear chain, and realize the diversified gear splicing combination of the spliced gear toy. The splicing parts include a first splicing part 210 and a second splicing part 220. The first splicing part 210 is used to keep any two of the gear parts in a stable meshing connection state in the horizontal direction, and the second splicing part 220 is used to keep any two of the gear parts in a stable meshing connection state in the vertical direction. The rotating shaft parts include a first rotating shaft part 310 and a second rotating shaft part 320. The first rotating shaft part 310 is used to fix another gear part or an external power structure on one of the gear parts, and the second rotating shaft part 320 is used to extend the extension length of the first rotating shaft part 310, thereby increasing the distance between two gear parts or between the gear part and the external power structure. The drawing board parts include a first drawing board part 410, a second drawing board part 420 and a third drawing board part 430. The first drawing board part 410 is detachably connected to the outside of the first gear part 110, the second drawing board part 420 is detachably connected to the outside of the second gear part 120, and the third drawing board part 430 is detachably connected to the outside of the third gear part 130, which plays a role in decorating the appearance and further increasing the fun of the splicing game.

[0030] In other embodiments of the present invention, the spliced gear toy may optionally not be provided with the rotating shaft part and / or the drawing board part. Moreover, the number of gear parts can be increased or decreased to other different size dimensions, or the gear parts can only have a unified size dimension. At the same time, the rotating shaft part may only include the first rotating shaft part 310.

[0031] It can be understood that each of the gear members includes a first runner 101 and a second runner 102. Among them, a plurality of teeth 1011 are circumferentially distributed on the outer ring of the first runner 101. It should be noted that the modules of the first runners 101 in the first gear member 110, the second gear member 120, and the third gear member 130 are the same to ensure that any two gear members can be meshed and connected for power transmission. A connecting cavity 1012 is provided in the inner ring of the first runner 101. The connecting cavity 1012 includes an opposite closed end and an open end. In this embodiment, a shaft post 1013 protrudes from the direction of the closed end towards the open end. The shaft post 1013 is located on the central axis of the first runner 101 and is rotatably connected to the second runner 102. A snap flange 1014 protrudes outward at the end of the shaft post 1013. The snap flange 1014 is snap-connected to the second runner 102 to rotatably and fixedly connect the second runner 102 in the connecting cavity 1012.

[0032] In other embodiments of the present invention, the shaft post 1013 on the closed end can be replaced with a shaft hole. At this time, a columnar structure is correspondingly provided on the second runner 102, so that the second runner 102 can be rotatably inserted and fixed in the connecting cavity 1012 through the columnar structure. The snap flange 1014 may not be provided at the end of the shaft post 1013. At this time, the shaft post 1013 and the second runner 102 can be fixedly and rotatably connected through an external connection structure, and the external connection structure includes a rotating bearing and the like.

[0033] In this embodiment, through holes are formed at both ends of the shaft post 1013 to form fixing holes 1015. The rotating shaft member is detachably connected in the fixing holes 1015. By using the cooperation of the fixing holes 1015 and the rotating shaft member, the assembled gear toy can be changed from single-layer gear rotation to double-layer gear rotation or multi-layer gear rotation, thereby increasing the game freedom of the assembled gear toy, enabling players to splice a variety of transmission gear chains, and having a better game experience. At least one connection hole 1016 is formed on the end wall of the closed end (in this embodiment, the number of connection holes 1016 is three and they are distributed in a triangle). The drawing board member is detachably connected in the connection holes 1016. By using the cooperation of the connection holes 1016 and the drawing board member, patterns can be added on the outside of the first runner 101 of any gear member, which can play a role in distinguishing different gear members and can also beautify the gear members. Players can splice drawing board members with different patterns on the assembled gear chain to form a more ornamental assembled graphic, further increasing the game freedom of the splicing game, improving the toy attraction, and enhancing the game experience.

[0034] In other embodiments of the present utility model, if the splicing gear toy does not have the rotating shaft member, the shaft column 1013 can be set as a solid column structure. Correspondingly, if the shaft column 1013 on the closed end of the connecting cavity 1012 is replaced with a shaft hole, the column structure on the second runner 102 is also provided with a fixing hole 1015. If the splicing gear toy does not have the drawing board member, the connecting hole 1016 may not be provided on the end wall of the closed end.

[0035] The second runner 102 is adaptively and rotatably installed in the connecting cavity 1012. Specifically, an opening structure 1021 is provided on the second runner 102, and the opening structure 1021 is rotatably sleeved on the shaft column 1013. In this embodiment, a snap step 1022 is formed on the opening structure 1021, and a snap flange 1014 is rotatably snap-connected to the snap step 1022. A plurality of positioning grooves 1023 are spaced apart on the second runner 102. The positioning grooves 1023 are recessed from the outer wall of the second runner 102 for detachably fixing and connecting the splicing member. It can be understood that the plurality of positioning grooves 1023 are symmetrically arranged at the center of the second runner 102 on the side opposite to the closed end, which can reduce the protruding amount of the second runner 102 from the first runner 101, so that the gear member can maintain a thin and light structure, facilitating the storage and transportation of the gear member. A snap opening 1024 is provided on the side wall of each positioning groove 1023, and the positioning foot of the splicing member is detachably snap-connected in the snap opening 1024 to increase the connection strength between the positioning groove 1023 and the positioning foot and ensure the meshing stability of the two meshing gear members.

[0036] In other embodiments of the present utility model, if the end of the shaft column 1013 does not have the snap flange 1014, the opening structure 1021 may not be constructed with the snap step 1022. Correspondingly, if the shaft column 1013 on the closed end of the connecting cavity 1012 is replaced with a shaft hole, the shaft hole also forms a snap step 1022. The plurality of positioning grooves 1023 can be arranged on the side of the second runner 102 perpendicular to the closed end. At this time, each positioning groove 1023 is completely exposed outside the connecting cavity 1012 to facilitate better connection of the splicing member. The snap opening 1024 may not be provided in the positioning groove 1023. At this time, the size of the positioning groove 1023 needs to be adjusted to be tightly fitted and fixed with the positioning foot of the splicing member to ensure the meshing stability of the two meshing gear members.

[0037] In this embodiment, the number of teeth 1011 in the first gear member 110 is thirty, and six positioning grooves 1023 are circumferentially and equally distributed on the first gear member 110. The number of teeth 1011 in the second gear member 120 is twenty-five, and five positioning grooves 1023 are circumferentially and equally distributed on the second gear member 120. The number of teeth 1011 in the third gear member 130 is twenty, and four positioning grooves 1023 are circumferentially and equally distributed on the third gear member 130. In other embodiments of the present invention, the number of teeth 1011 and / or the number of positioning grooves 1023 of the first gear member 110, the second gear member 120, and the third gear member 130 can be adaptively adjusted to other values according to the adjustment of their pitch circle diameters.

[0038] It can be understood that each of the splicing members includes at least two positioning feet 201 arranged parallel to each other, perpendicular to each other, or on the same straight line. Each positioning foot 201 is detachably inserted and fixed in the positioning groove 1023 of any of the gear members. When the two positioning feet 201 of the splicing member are respectively inserted and fixed in the positioning grooves 1023 of any two gear members, the teeth 1011 of the two gear members can be kept in a meshed connection state. By using the cooperation between the positioning feet 201 and the positioning grooves 1023, each splicing member can firmly, stably, and quickly connect any two gear members into one body. That is to say, the above setting enables each splicing member to only be provided with at least two positioning feet 201, thereby making the structure of the splicing member simpler and smaller. Connecting with the gear members will not excessively increase the overall thickness, and it can be connected between any two gear members of any size without setting splicing members of other sizes. It can reduce the types of overall splicing components, lower the design and production costs while ensuring that the spliced gear toy has gear members with diverse sizes, and at the same time, it can make the overall toy maintain a thin, light, and small structure, which is convenient for storage and carrying.

[0039] It can be understood that snap plates 2011 are elastically arranged on at least one side wall of each positioning leg 201. When the positioning leg 201 is inserted and connected into the positioning groove 1023, the snap plate 2011 can be snap-connected into the snap opening 1024, so that the positioning leg 201 can be more firmly fixed in the positioning groove 1023. In this embodiment, the first splicing member 210 is composed of two positioning legs 201 fixedly arranged in parallel at both ends of the main body plate 202, and the second splicing member 220 is composed of four positioning legs 201 arranged vertically in a cross shape. When splicing gear members in the horizontal direction, any two gear members can be meshed and connected, and then the two positioning legs 201 of the first splicing member 210 can be inserted and fixed into the positioning grooves 1023 on the two gear members. When splicing gear members in the vertical direction, any two gear members can be meshed and connected, and then the two positioning legs 201 of the second splicing member 220 can be inserted and fixed into the positioning grooves 1023 on the two gear members. If it is necessary to disassemble and separate any two gear members, a pulling force is applied to the first splicing member 210 or the second splicing member 220 to elastically move the snap plate 2011 to disengage from the snap opening 1024, and then the positioning leg 201 can be pulled out of the positioning groove 1023.

[0040] In other embodiments of the present invention, the first splicing member 210 can be adaptively adjusted to be composed of two positioning legs 201 located on the same straight line according to the position of the positioning groove 1023. Similarly, the second splicing member 220 can be adjusted to be composed of two or three positioning legs 201 perpendicular to each other.

[0041] It can be understood that each of the rotating shaft members includes a first section 301 and a second section 302 that are integrally fixed. The second section 302 is detachably inserted and fixed into the fixing hole 1015, so that the rotating shaft member can be fixedly connected to the central axis of the gear member. In this embodiment, the first rotating shaft member 310 is composed of a first section 301 and two second sections 302 fixed at both ends thereof, and the second rotating shaft member 320 is composed of a connected first section 301 and a second section 302. Among them, a socket hole 3011 is formed in the first section 301 of the second rotating shaft member 320, and the second section 302 of another rotating shaft member is detachably inserted and fixed in the socket hole 3011. In order to increase the connection strength between the rotating shaft member and the gear member, the fixing hole 1015 is set as a polygonal hole (such as a hexagonal hole), the shape of the second section 302 is set as a prism matching the fixing hole 1015 (such as a hexagonal prism), and correspondingly, the shape of the socket hole 3011 can be set as a polygonal hole (such as a hexagonal hole) matching the second section 302. When it is necessary to stack one or more gear members (or external power structures) on the gear member, the second section 302 of the first rotating shaft member 310 is inserted into the fixing hole 1015, and the fixing hole 1015 of another gear member (or the fixing hole of the external power structure) is inserted onto the other second section 302 of the first rotating shaft member 310. At the same time, the overall length of the rotating shaft can be increased by inserting the first section 301 of the second rotating shaft member 320 onto the second section 302 of the first rotating shaft member 310.

[0042] In other embodiments of the present invention, the fixing hole 1015, the socket hole 3011 and the second section 302 can be adjusted to a round hole and a cylinder structure, and the diameter of the cylinder is the same as the diameter of the round hole, so that the cylinder can be tightly fitted in the round hole.

[0043] It can be understood that a graphic is provided on one side of each of the drawing board members, and a connecting column 401 protrudes corresponding to the connecting hole 1016 on the other side of the drawing board member. The connecting column 401 is detachably inserted and fixed into the connecting hole 1016, so that the drawing board member can be fixedly connected to the outside of the gear member. In this embodiment, the sizes of the first drawing board member 410, the second drawing board member 420 and the third drawing board member 430 decrease in sequence, and the first drawing board member 410 is a circular plate with a diameter smaller than the pitch circle diameter of the first runner in the first gear member 110, the second drawing board member 420 is a circular plate with a diameter smaller than the pitch circle diameter of the first runner in the second gear member 120, and the third drawing board member 430 is a circular plate with a diameter smaller than the pitch circle diameter of the first runner in the third gear member 130.

[0044] In other embodiments of the present invention, the first drawing board member 410, the second drawing board member 420 and the third drawing board member 430 can be set as plate members of other shapes, such as squares, etc.

[0045] For clarity, certain features described in separate embodiments of the present utility model may be used in combination in a single embodiment. Moreover, the various features of the present utility model described in a single embodiment may also be used separately or in any suitable form in sub-combinations.

Claims

1. A splicing gear toy, comprising a plurality of gear parts and a plurality of splicing parts, characterized in that: Each of the gear parts includes a first rotating wheel and a second rotating wheel, the outer ring of the first rotating wheel is circumferentially distributed with a plurality of teeth, the inner ring of the first rotating wheel is provided with a connecting cavity, the second rotating wheel is rotatably installed in the connecting cavity, and the second rotating wheel is spaced apart with a plurality of positioning grooves; each of the splicing parts includes at least two positioning feet arranged parallel to each other, perpendicular to each other or in the same straight line, each of the positioning feet is detachably inserted and fixed in one of the positioning grooves, and when the two positioning feet of the splicing part are respectively inserted and fixed in the positioning grooves of any two of the gear parts, the teeth of the two gear parts can be kept in a meshing connection state.

2. The gear assembly toy according to claim 1, characterized in that: The connecting cavity includes a closed end and an open end relative to each other, an axial hole is provided on the closed end or an axial column is protruded from the closed end toward the open end, the axial hole or the axial column is located on the central axis of the first rotating wheel, and a column structure or an open hole structure is correspondingly provided on the second rotating wheel, the column structure is rotatably inserted into the axial hole, and the axial column is rotatably inserted into the open hole structure.

3. The gear assembly toy according to claim 2, characterized in that: A snap-on flange is protruded outwardly from the end of the shaft column or the column structure, and a snap-on step is formed on the opening structure or the shaft hole, and the snap-on step is rotatably snap-connected to the snap-on flange.

4. The gear assembly toy according to claim 2, characterized in that: A plurality of positioning grooves are centrally symmetrically arranged on a side of the second rotating wheel opposite to the closed end. A buckle opening is provided on the side wall of each positioning groove, and the positioning foot is detachably buckled in the buckle opening.

5. The splicing gear toy according to claim 4, characterized in that: The splicing piece includes a first splicing piece and a second splicing piece, the first splicing piece is composed of two positioning feet fixed in parallel at both ends of the main plate, and the second splicing piece is composed of four positioning feet arranged vertically in a cross shape, and a snap plate is elastically arranged on at least one side wall of each of the positioning feet, and the snap plate can be snap-connected in the snap opening.

6. The splicing gear toy according to claim 2, characterized in that: Both ends of the shaft column or the column structure are connected to form a fixing hole, and a rotating shaft is detachably connected in the fixing hole. The rotating shaft includes a first section and a second section that are fixed integrally, and the second section is detachably inserted and fixed in the fixing hole.

7. The splicing gear toy according to claim 6, characterized in that: The rotating shaft member includes a first rotating shaft member and a second rotating shaft member, the first rotating shaft member is composed of a first section and two second sections fixed at its two ends, the second rotating shaft member is composed of a connected first section and a second section, a sleeve hole is opened in the first section of the second rotating shaft member, and the second section of another rotating shaft member is detachably inserted and fixed in the sleeve hole.

8. The splicing gear toy according to claim 7, characterized in that: The fixing hole is a polygonal hole, and the second section is a polygonal column with a shape matching the fixing hole.

9. The gear assembly toy according to claim 2, characterized in that: At least one connecting hole is provided on the end wall of the closed end, and a drawing board is detachably connected to the outer side of the first rotating wheel through the connecting hole. A graphic is provided on one side of the drawing board, and a connecting column is protruded on the other side of the drawing board corresponding to the connecting hole. The connecting column is detachably inserted and fixed in the connecting hole.

10. The gear assembly toy according to claim 1, characterized in that: The gear member includes a first gear member, a second gear member and a third gear member. The modules of the first rotating wheels in the first gear member, the second gear member and the third gear member are the same and the pitch circle diameters decrease successively. The number of teeth in the first gear member is thirty and six positioning grooves are evenly distributed in an annular direction on the first gear member. The number of teeth in the second gear member is twenty-five and five positioning grooves are evenly distributed in an annular direction on the second gear member. The number of teeth in the third gear member is twenty and four positioning grooves are evenly distributed in an annular direction on the third gear member.

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