A sifting toy vehicle

Abstract

The utility model relates to the field of screening toy car discloses a kind of screening toy car, including frame;Screening bucket, it is set on the frame and can rotate about its axis, the screening bucket has the internal cavity for accommodating material, the side wall of the screening bucket is provided with the sieve hole that the internal cavity is communicated with external space, in the axial direction of the screening bucket, one end of the screening bucket is provided with the entrance of the internal cavity, and the other end is provided with the outlet of the internal cavity;Sieve hole adjusting part, it is set on the screening bucket, the sieve hole adjusting part is configured to change the effective flow area and / or effective flow shape of the sieve hole, so that the screening toy car has at least two different screening specifications of screening mode, which can realize the convenient adjustment of sieve hole shape and / or size, to enrich screening play, improve playability.

Description

Technical Field

[0001] This utility model relates to the field of screening toy car technology, and in particular to a screening toy car. Background Technology

[0002] A material sieving toy car is an educational toy that combines movement and sieving functions. Its basic structure typically includes a movable frame and a sieve barrel that rotates on the frame. The sieve barrel has a cavity inside to hold the material, and its side walls have sieve holes of specific shapes and sizes. When playing, children put material into the inlet at one end of the sieve barrel and manually or mechanically drive the barrel to rotate around its own axis. Material that meets the size requirements leaks out through the sieve holes, achieving grading and separation, while larger particles are discharged from the outlet at the other end of the sieve barrel. This type of toy simulates the sieving process in industrial production, combining entertainment and educational value.

[0003] However, existing material screening toy cars still have significant shortcomings in structural design and functional implementation. This is mainly reflected in the fact that the side walls of the screening drum in existing toy cars typically use a one-piece molded or fixedly installed screen structure. The shape and size of the screen holes are fixed once manufactured and cannot be changed according to play needs. Children can quickly grasp the screening rules, significantly reducing the toy's replayability and making it difficult to maintain long-term interest and participation. Furthermore, because the screen holes are not adjustable, the toy cannot adapt to diverse screening materials of different particle sizes or shapes, limiting the richness of play scenarios and educational potential.

[0004] Therefore, there is an urgent need to provide a screening toy vehicle that can easily adjust the shape and / or size of the screening holes to enrich the screening gameplay and enhance playability. Utility Model Content

[0005] Therefore, it is necessary to provide a screening toy car that can easily adjust the shape and / or size of the screening holes to enrich the screening gameplay and enhance playability.

[0006] Some embodiments of this application provide a sieving toy car, including:

[0007] Frame;

[0008] A sieve barrel, rotatable about its own axis, is mounted on the frame. The sieve barrel has an internal cavity for containing material. The side wall of the sieve barrel has sieve holes communicating with the internal cavity and an external space. Along the axial direction of the sieve barrel, one end has an inlet communicating with the internal cavity, and the other end has an outlet communicating with the internal cavity.

[0009] A screen aperture adjustment component is disposed on the screen barrel. The screen aperture adjustment component is configured to change the effective flow area and / or effective flow shape of the screen aperture so that the screened toy car has at least two different screening modes.

[0010] In some embodiments, the sieve aperture adjusting member has a through hole, the sieve aperture adjusting member is disposed in the internal cavity and the position of the sieve aperture adjusting member relative to the sieve barrel is adjustable to adjust the overlap area between the through hole and the sieve aperture.

[0011] In some embodiments, the sieve aperture adjusting member is tubular and is inserted into the internal cavity; and / or,

[0012] There are multiple through holes, and at least two of the multiple through holes have different shapes.

[0013] In some embodiments, the sieving toy car also includes:

[0014] A material feeding component is disposed on the outer surface of the screen barrel, and the material feeding component is arranged in parallel with the screen holes in the circumferential direction of the screen barrel.

[0015] In some embodiments, the feeding component is a protruding structure integrally formed with the screen barrel.

[0016] In some embodiments, the sieve barrel includes:

[0017] The first half-shell has an ear plate portion;

[0018] The second half-shell has a mating part, and the ear plate part of the first half-shell engages with the mating part of the second half-shell to enclose the internal cavity, and at least part of the ear plate part is formed as the feeding member.

[0019] In some embodiments, there are multiple sieve holes. In the direction from the inlet to the outlet of the sieve barrel, the multiple sieve holes sequentially include a group of small sieve holes and a group of large sieve holes. The group of small sieve holes includes at least one small sieve hole, and the group of large sieve holes includes at least one large sieve hole.

[0020] In some embodiments, the screen barrel is shaped like a hollow, open-end truncated column, and its inner diameter gradually increases from the inlet to the outlet.

[0021] In some embodiments, the frame includes:

[0022] Frame;

[0023] A hopper is provided on the frame.

[0024] A rotating disc is rotatably mounted on the frame and / or the hopper. The rotating disc is provided with a connecting part, and the screen barrel is connected to the connecting part. The rotating disc has a connecting hole that communicates with the inlet, and the discharge port of the hopper is connected to the inlet through the connecting hole.

[0025] In some embodiments, the sieving toy car also includes:

[0026] The drive motor and the first transmission gear are provided. The drive motor is mounted on the frame, and the first transmission gear is rotatably mounted on the frame. A first external gear is formed on the outer periphery of the rotating disk. The output end of the drive motor is connected to the first transmission gear, and the first transmission gear is connected to the first external gear.

[0027] And / or,

[0028] A manual rotating wheel and a second transmission gear are rotatably mounted on the frame. A second external gear is formed on the outer periphery of the rotating disk. The second transmission gear is coaxially mounted on the central shaft of the manual rotating wheel. The second transmission gear is connected to the second external gear in a transmission manner.

[0029] The beneficial effects of this utility model are:

[0030] In this sieving toy car, the frame provides stable support for the sieve barrel, integrating both motion and sieving functions. The sieve barrel is rotatably mounted on the frame around its own axis. Utilizing its internal cavity, the inlet and outlet at its axial end, and the sieve holes on its sidewalls, it achieves material feeding and grading separation under the dynamic rotation of the sieve barrel, thus simulating the industrial sieving process and combining entertainment with educational value. Furthermore, by setting sieve hole adjustment components on the sieve barrel, the effective flow area and / or effective flow shape of the sieve holes can be changed, giving the sieving toy car at least two different sieving modes. This breaks through the limitation of the fixed sieve hole parameters in traditional fixed sieve structures. On the one hand, it allows for flexible switching of sieving specifications to adapt to materials of different particle sizes or shapes according to play needs, significantly enriching play scenarios and educational expansion space. On the other hand, by changing the effective flow area and / or effective flow shape of the sieve holes, it extends the children's exploration and cognitive cycle, enhancing the replayability of the sieving toy car. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0032] Figure 1 A three-dimensional schematic diagram of a toy car for screening materials, provided for some embodiments of this utility model. Figure 1 ;

[0033] Figure 2 A three-dimensional schematic diagram of a toy car for screening materials, provided for some embodiments of this utility model. Figure 2 ;

[0034] Figure 3 A perspective view of a toy car for screening materials, with the screen barrel and screen hole adjustment component concealed, provided for some embodiments of this utility model;

[0035] Figure 4 An assembly perspective view of the sieve barrel and sieve aperture adjustment component provided for some embodiments of this utility model;

[0036] Figure 5 A perspective view of a sieve barrel provided for some embodiments of this utility model;

[0037] Figure 6 A perspective view of a sieve aperture adjusting component provided for some embodiments of this utility model;

[0038] Figure 7 A schematic diagram of the driving principle structure of the rotating disk provided for some embodiments of this utility model.

[0039] Figure label:

[0040] 100. Frame; 110. Frame body; 120. Rotary disc; 121. Connecting part; 122. Communicating hole; 123. First external gear; 124. Second external gear; 130. Hopper;

[0041] 200, Screen barrel; 210, Internal cavity; 220, Screen hole; 221, Small screen hole; 222, Large screen hole; 230, Inlet; 240, Outlet; 250, Feeding component; 260, First half-shell; 270, Second half-shell; 271, Mating part;

[0042] 300. Screen aperture adjustment component; 310. Through hole;

[0043] 400, drive motor; 500, first transmission gear; 600, manual rotary wheel; 700, second transmission gear. Detailed Implementation

[0044] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In this utility model, unless otherwise explicitly specified and limited, a feature "above" or "below" the second feature may mean that the feature is in direct contact with the second feature or indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature may mean that the feature is directly above or diagonally above the second feature, or simply indicates that the feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "beneath" the second feature may mean that the feature is directly below or diagonally below the second feature, or simply indicates that the feature is at a lower horizontal level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] refer to Figures 1-4Some embodiments of this application provide a material screening toy vehicle, which includes a frame 100, a screen barrel 200, and a screen aperture adjustment component 300. The screen barrel 200 is rotatably mounted on the frame 100 and has an internal cavity 210 for containing material. The side wall of the screen barrel 200 has screen apertures 220 communicating with the external space. Along the axial direction of the screen barrel 200, one end has an inlet 230 communicating with the internal cavity 210, and the other end has an outlet 240 communicating with the internal cavity 210. The screen aperture adjustment component 300 is mounted on the screen barrel 200 and is configured to change the effective flow area and / or effective flow shape of the screen apertures 220, so that the material screening toy vehicle has at least two different screening modes. In the above embodiments, the frame 100 provides stable support for the screen barrel 200, integrating both movement and screening functions. The sieve barrel 200 is rotatably mounted on the frame 100 around its own axis. Utilizing its internal cavity 210, the inlet 230 and outlet 240 at its axial end, and the sieve holes 220 on its sidewall, it achieves material feeding and grading separation under the dynamic rotation of the sieve barrel 200, thereby simulating the industrial production screening process and combining entertainment and educational significance. Furthermore, by setting a sieve hole adjustment component 300 on the sieve barrel 200, the effective flow area and / or effective flow shape of the sieve holes 220 can be changed, giving the screening toy car at least two different screening modes. This breaks through the limitation of the invariable parameters of the sieve holes 220 under the traditional fixed sieve structure. On the one hand, it allows for flexible switching of screening specifications to adapt to materials of different particle sizes or shapes according to play needs, significantly enriching play scenarios and educational expansion space. On the other hand, by changing the effective flow area and / or effective flow shape of the sieve holes 220, it extends the children's exploration and cognitive cycle, enhancing the replayability of the screening toy car.

[0051] In some implementations, reference Figures 1-6The sieve aperture adjustment component 300 has a through hole 310. The sieve aperture adjustment component 300 is disposed in the internal cavity 210 and its position relative to the sieve barrel 200 is adjustable to adjust the overlap area of ​​the through hole 310 and the sieve aperture 220. By embedding the sieve aperture adjustment component 300 with the through hole 310 in the internal cavity 210 of the sieve barrel 200, and by adjusting the relative position of the sieve aperture adjustment component 300 and the sieve barrel 200 to change the overlap area of ​​the through hole 310 and the sieve aperture 220, the effective flow area can be continuously or gradedly adjusted with a compact built-in structure. This not only saves external space, but also allows the size range of permeable particles to be controlled by the change in overlap area. This enables the same sieve barrel 200 to quickly adapt to materials of different particle sizes, enriching the flexibility and diversity of screening scenarios, increasing the exploratory and repetitive playability, and effectively overcoming the drawbacks of the fixed sieve structure, such as the single parameter of the sieve aperture 220, poor adaptability, and easy loss of interest.

[0052] More specifically, the through hole 310 can be an elongated square hole, and the sieve hole 220 can be a square hole or a round hole. By rotating the sieve hole adjusting component 300, the position of the sieve hole adjusting component 300 relative to the sieve barrel 200 can be adjusted to adjust the overlap area of ​​the through hole 310 and the sieve hole 220, thereby changing the effective flow area of ​​the sieve hole 220.

[0053] Of course, in some cases, the through hole 310 can also be interpreted as a clearance part on the sieve hole adjusting member 300. For example, the sieve hole adjusting member 300 is formed with a plate-shaped baffle. The plate-shaped baffle has a clearance part on one side of the circumference of the sieve hole adjusting member 300. The clearance part can change the overlap with the sieve hole 220 according to the position adjustment of the plate-shaped baffle, so as to adjust the overlap area between the through hole 310 and the sieve hole 220, thereby changing the effective flow area of ​​the sieve hole 220 or changing the effective flow shape at the same time.

[0054] Furthermore, in some embodiments, there are multiple through holes 310, and at least two of the multiple through holes 310 have different shapes. By setting multiple through holes 310 with at least two different shapes, when the screen hole adjusting member 300 rotates relative to the screen barrel 200 for position adjustment, it can select through holes 310 of different shapes to connect with the original screen holes 220 of the screen barrel 200, thereby not only adjusting the effective flow area, but also directly changing the effective flow shape of the screen holes 220. In this way, it can adapt to materials with different geometric shapes such as spheres, cubes, and strips, realizing shape-based grading and screening, greatly enriching the play scenarios and educational content; children can intuitively perceive the influence of shape on screening effect during the switching process, deepen their understanding of the separation principle, significantly enhance their exploration interest and repetitive playability, and effectively overcome the defects of poor material adaptability and monotonous play caused by fixed single-shaped screen holes 220.

[0055] It needs to be explained that changing the effective flow area and / or effective flow shape of the sieve aperture 220 is equivalent to changing the screening mode of the sieve aperture 220; it can be changing only the effective flow area, or only the effective flow shape, or both the effective flow area and / or effective flow shape of the sieve aperture 220 can be changed simultaneously.

[0056] refer to Figure 1 , Figure 4 and Figure 6 In some embodiments, the screen aperture adjusting member 300 is tubular and is inserted into the internal cavity 210. More specifically, the insertion can be an interference fit, or it can be a combination of a protrusion on one side and multiple grooves spaced apart along the circumference of the screen barrel 200 on the other side, with the protrusion accommodated in the grooves to achieve a limiting fit. During installation, the position of the screen aperture adjusting member 300 relative to the screen barrel 200 is first determined, and then the protrusion is ensured to be accommodated in the grooves, thereby achieving the adjustment of the position of the screen aperture adjusting member 300 relative to the screen barrel 200 and the limiting installation of the screen aperture adjusting member 300 on the screen barrel 200.

[0057] Furthermore, the existing screen holes 220 of the screen barrel 200 are usually evenly distributed on the side wall surface. However, during actual rotary screening, when the fine materials are screened and fall through the screen holes 220, there is a lack of effective guiding or dispersing structures, causing the screened material to accumulate in large quantities below the screen barrel 200 or at the chassis of the frame 100. As the accumulation height increases, the accumulated material gradually blocks some of the screen holes 220, hindering the normal discharge of subsequent materials and thus reducing screening efficiency. More seriously, when the material accumulation height touches the outer wall of the screen barrel 200, it increases the frictional resistance of the screen barrel 200's rotation and may even cause jamming. This not only affects the smoothness of operation but may also cause damage to components due to children forcibly operating the machine. In addition, the material accumulation problem requires children to frequently interrupt their play to clean up the accumulated material, greatly disrupting the continuity and immersion of play and reducing the user experience. To address the above problems, refer to... Figure 1 , Figure 2 , Figure 4 and Figure 5In some embodiments, the sieving toy car also includes a material-pushing component 250, which is disposed on the outer surface of the sieve barrel 200 and arranged in parallel with the sieve holes 220 in the circumferential direction of the sieve barrel 200. By setting a material-pushing component 250 on the outer surface of the screen barrel 200 and arranging it circumferentially alongside the screen holes 220, the material-pushing component 250 actively disperses, pushes, or guides the screened material accumulated below and around the screen barrel 200 when the screen barrel 200 rotates. This effectively prevents the screened material from piling up excessively in the chassis area, avoiding blockage of the screen holes 220 and ensuring continuous unobstructed screening channels, thus significantly improving screening efficiency. At the same time, because the material-pushing component 250 promptly disperses the material pile tightly adhering to the outer wall of the screen barrel 200, it eliminates the increased rotational friction resistance caused by material accumulation, thereby avoiding screen barrel 200 jamming and the risk of component damage caused by it, ensuring smooth operation and structural reliability. In addition, children do not need to frequently interrupt play to manually clean up the accumulated material, greatly extending the duration of continuous play and immersion, significantly improving the user experience and the overall practicality of the toy.

[0058] In some implementations, reference Figure 5 The material feeder 250 is a raised structure integrally formed with the screen barrel 200. The material feeder 250 adopts a raised structure integrally formed with the screen barrel 200, eliminating the need for additional assembly processes, simplifying the manufacturing process and assembly flow, reducing production costs and the complexity of parts management; at the same time, the integrated design eliminates the risk of loosening, falling off or relative displacement of the connecting parts.

[0059] refer to Figure 2 , Figure 4 and Figure 5 In some embodiments, the screen barrel 200 includes a first half-shell 260 and a second half-shell 270. The first half-shell 260 has an ear plate portion; the second half-shell 270 has a mating portion 271. The ear plate portion of the first half-shell 260 and the mating portion 271 of the second half-shell 270 are engaged to enclose the internal cavity 210. At least a portion of the ear plate portion is formed as a material-pushing component 250. This split assembly structure, where the first half-shell 260 and the second half-shell 270 are engaged by the ear plate portion and the mating portion 271 to enclose the internal cavity 210, facilitates convenient assembly and disassembly of the screen barrel 200, making it easy to clean and maintain the internal cavity 210 or replace the screen aperture adjustment component 300. Furthermore, by directly using at least a portion of the ear plate portion as the material-pushing component 250, the original connecting structure also functions as an active material-pushing component after assembly, achieving structural reuse and functional integration without the need for additional independent material-pushing parts. In addition, in some alternative embodiments, the ear plate and the feed piece 250 may also be separately designed structures.

[0060] In some implementations, reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The screen 200 has multiple sieve holes 220. Along the direction from the inlet 230 to the outlet 240 of the screen barrel 200, the multiple sieve holes 220 sequentially include a small sieve hole group and a large sieve hole group. The small sieve hole group includes at least one small sieve hole 221, and the large sieve hole group includes at least one large sieve hole 222. The aperture of the small sieve hole 221 is smaller than the aperture of the large sieve hole 222. The sequential arrangement of the small sieve hole group and the large sieve hole group along the direction from the inlet 230 to the outlet 240 of the screen barrel 200 ensures that, as the material moves from the inlet 230 to the outlet 240, smaller particles first pass through the small sieve hole 221, larger particles subsequently pass through the large sieve hole 222, and the largest particles are finally discharged from the outlet 240. This achieves a continuous grading and screening process from fine to coarse along the axial direction within a single screen barrel 200. This layout optimization not only significantly improves the grading efficiency and precision of a single screening operation, enabling the orderly separation of materials with different particle size ranges, but also simulates the process logic of multi-stage screening in real industrial production, greatly enhancing the educational demonstration value of the toy, increasing the fun of playing, and improving children's intuitive understanding of particle size grading concepts.

[0061] refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 In some embodiments, the screen barrel 200 is shaped like a hollow, truncated cone with open ends. The inner diameter of the screen barrel 200 gradually increases from the inlet 230 to the outlet 240. On one hand, as the material moves axially under the influence of gravity and rotation, the material layer thins and the bulk density decreases as the internal space expands, effectively reducing the compression and clogging between particles. This allows fine particles to more easily contact the screen openings 220 in the smaller diameter section and leak out earlier, while larger particles have more space in the larger diameter section for smooth discharge, thereby optimizing axial classification efficiency and significantly reducing the risk of clogging of the screen openings 220. On the other hand, the truncated cone structure can apply an axial force towards the outlet 240 when rotating, which helps to accelerate the movement of large particles towards the outlet 240.

[0062] In some implementations, reference Figures 1-4 and Figure 7The frame 100 includes a frame body 110, a rotating disk 120, and a hopper 130. The hopper 130 is disposed on the frame body 110, and the rotating disk 120 is rotatably disposed on the frame body 110 and / or the hopper 130. The rotating disk 120 is provided with a connecting portion 121, and the screen barrel 200 is connected to the connecting portion 121. The connecting portion 121 may form an annular groove for insertion and mating. The rotating disk 120 has a communicating hole 122 communicating with the inlet 230; the discharge port of the hopper 130 is connected to the inlet 230 through the communicating hole 122. Specifically, the rotating disk 120 may be rotatably disposed on the hopper 130. More specifically, the rotating disk 120 may include a cylindrical portion, and the hopper 130 has a circular hole portion. The cylindrical portion is rotatably inserted into the circular hole portion, thereby providing a rotatable support structure for the rotating disk 120 through the hopper 130. By setting a rotatable rotating disk 120, which is connected to the screen barrel 200 via a connecting part 121, and a connecting hole 122 is opened on the rotating disk 120, the discharge port of the hopper 130 fixed to the frame 110 is connected to the inlet 230 of the screen barrel 200 through the connecting hole 122, thereby constructing a continuous feeding channel from the hopper 130 to the inside of the screen barrel 200. In this way, the material can be continuously and quantitatively supplied by the hopper 130 during the rotation of the screen barrel 200, eliminating the need for frequent manual feeding into the screen barrel 200, thus improving the automation and continuity of the game; the rotating disk 120 serves as both a power transmission component to drive the screen barrel 200 to rotate and as part of the material transfer channel, realizing the integration of transmission and feeding functions; in addition, in some embodiments, the connection between the screen barrel 200 and the connecting part 121 can be detachable, which facilitates the quick replacement of different specifications of screen barrels 200 or internal cleaning and maintenance according to different game needs, greatly expanding the flexibility of the game and the convenience of daily maintenance. Detachable connections can be plug-in or threaded connections, which are simple in structure, low in cost, and easy to implement.

[0063] In order to drive the rotating disk 120 to rotate. (Reference) Figures 1-4 and Figure 7In some embodiments, the screening toy car also includes a manual rotating wheel 600 and a second transmission gear 700, both rotatably configured. A second external gear 124 is formed on the outer periphery of the rotating disk 120, and the second transmission gear 700 is coaxially arranged on the central shaft of the manual rotating wheel 600. The second transmission gear 700 and the second external gear 124 are connected in a transmission manner, thereby driving the rotating disk 120 to rotate by manually rotating the manual rotating wheel 600. Specifically, the first transmission gear 500 can be a gear as shown in the figure, or in some embodiments, a bevel gear. The second external gear 124 formed on the outer periphery of the rotating disk 120 can also be a gear as shown in the figure, or in some embodiments, a bevel gear. The two achieve meshing transmission, and at the same time, the rotation axis of the second transmission gear 700 can be perpendicular to the rotation axis of the second external gear 124, changing the transmission direction and facilitating the arrangement of the manual rotating wheel 600. The transmission connection can be a direct transmission connection or an existing indirect transmission connection, which will not be elaborated further.

[0064] refer to Figures 1-4 and Figure 7 In some embodiments, the screening toy car further includes a drive motor 400 and a first transmission gear 500. The drive motor 400 is mounted on the frame 110, and the first transmission gear 500 is rotatably mounted. A first external gear 123 is formed on the outer periphery of the rotating disk 120. The output end of the drive motor 400 drives and connects to the first transmission gear 500. The drive connection to the first transmission gear 500 can be a coaxial connection or an indirect transmission connection through an existing transmission gear combination; details are not elaborated here. The first transmission gear 500 and the first external gear 123 are connected, thereby driving the rotating disk 120 to rotate electrically. Specifically, the first transmission gear 500 can be a spur gear as shown in the figure, and the first external gear 123 formed on the outer periphery of the rotating disk 120 can also be a spur gear as shown in the figure, that is, a gear structure with meshing tooth surfaces is formed on the outer periphery, and the two mesh to achieve transmission. The transmission connection can be a direct transmission connection or an existing indirect transmission connection; details are not elaborated here.

[0065] refer to Figures 1-4 and Figure 7 In some embodiments, the sieving toy car also includes a drive motor 400, a first transmission gear 500, a manual rotating wheel 600, and a second transmission gear 700, connected as described above. This allows for either electric drive of the rotating disk 120 or manual drive of the rotating disk 120 by rotating the manual rotating wheel 600. In other embodiments, only a manual drive structure or an electric drive structure may be used.

[0066] Finally, it should be noted that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above embodiments illustrate only one implementation of the present utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the appended claims.

Claims

1. A toy car for sifting materials, characterized in that, include: Frame (100); A sieve barrel (200) is rotatably mounted on the frame (100) about its own axis. The sieve barrel (200) has an internal cavity (210) for containing materials. The side wall of the sieve barrel (200) has sieve holes (220) that connect the internal cavity (210) to the external space. Along the axial direction of the sieve barrel (200), one end has an inlet (230) connecting to the internal cavity (210), and the other end has an outlet (240) connecting to the internal cavity (210). A screen aperture adjustment element (300) is disposed on the screen barrel (200). The screen aperture adjustment element (300) is configured to change the effective flow area and / or effective flow shape of the screen aperture (220) so that the screened toy car has at least two different screening modes.

2. The toy car with a sieve as claimed in claim 1, characterized in that, The sieve hole adjusting member (300) has a through hole (310), the sieve hole adjusting member (300) is disposed in the internal cavity (210) and the position of the sieve hole adjusting member (300) relative to the sieve barrel (200) is adjustable to adjust the overlapping area of ​​the through hole (310) and the sieve hole (220).

3. The toy car with a sieve according to claim 2, characterized in that, The sieve aperture adjusting member (300) is tubular and is inserted into the internal cavity (210); and / or, There are multiple through holes (310), and at least two of the multiple through holes (310) have different shapes.

4. The toy car with a sieve as claimed in claim 1, characterized in that, Also includes: A material feeding component (250) is disposed on the outer surface of the screen barrel (200), and the material feeding component (250) is arranged in parallel with the screen holes (220) in the circumferential direction of the screen barrel (200).

5. The toy car with a sieve according to claim 4, characterized in that, The feeding component (250) is a raised structure integrally formed with the screen barrel (200).

6. The toy car with a sieve according to claim 4, characterized in that, The screen barrel (200) includes: The first half-shell (260) has an ear plate portion; The second half-shell (270) has a mating part (271) where the ear plate portion of the first half-shell (260) engages with the mating part (271) of the second half-shell (270) to enclose the internal cavity (210), and at least a portion of the ear plate portion is formed as the feed piece (250).

7. The toy car with a sieve as claimed in claim 1, characterized in that, There are multiple sieve holes (220). In the direction from the inlet (230) to the outlet (240) of the sieve barrel (200), the multiple sieve holes (220) sequentially include a small sieve hole group and a large sieve hole group. The small sieve hole group includes at least one small sieve hole (221), and the large sieve hole group includes at least one large sieve hole (222).

8. The toy car with a sieve according to claim 1, characterized in that, The sieve barrel (200) is shaped like a hollow truncated pillar with open ends. The inner diameter of the sieve barrel (200) gradually increases from the inlet (230) to the outlet (240).

9. The toy car with a sieve as claimed in claim 1, characterized in that, The frame (100) includes: Frame (110); A hopper (130) is disposed on the frame (110). A rotating disk (120) is rotatably disposed on the frame (110) and / or the hopper (130). The rotating disk (120) is provided with a connecting part (121). The screen barrel (200) is connected to the connecting part (121). The rotating disk (120) has a connecting hole (122) communicating with the inlet (230). The discharge port of the hopper (130) is connected to the inlet (230) through the connecting hole (122).

10. The toy car with a sieve according to claim 9, characterized in that, Also includes: A drive motor (400) and a first transmission gear (500) are provided. The drive motor (400) is disposed on the frame (110). The first transmission gear (500) is rotatably disposed. A first external gear (123) is formed on the outer periphery of the rotating disk (120). The output end of the drive motor (400) is driven and connected to the first transmission gear (500). The first transmission gear (500) is connected to the first external gear (123) in a transmission connection. And / or, The manual turntable (600) and the second transmission gear (700) are rotatably configured. The outer periphery of the turntable (120) is formed with a second external gear (124). The manual turntable (600) is coaxially configured with the second transmission gear (700) on its central shaft. The second transmission gear (700) is connected to the second external gear (124) in a transmission connection.

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