Toy forklift based on threaded lifting control

Abstract

The utility model relates to the technical field of toy forklifts, in particular to a toy forklift based on threaded lifting control, which comprises a forklift body and a support fixed on the forklift body. The advancing assembly is arranged at the bottom of the vehicle body, and front wheels are connected to the advancing assembly and used for controlling the vehicle body to advance; the lifting assembly is arranged on the support, a suspension arm is connected to the lifting assembly, a transmission speed reduction mechanism connected with the lifting assembly is arranged on the vehicle body, and the transmission speed reduction mechanism can control the suspension arm to move in the vertical direction through the lifting assembly; and the steering assembly is arranged on the car body and used for controlling the car body to steer, and when the transmission speed reducing mechanism works, the lifting assembly can be controlled to keep a stable state to adjust the height of the suspension arm, so that the stability of the toy during use is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of toy forklift technology, specifically a toy forklift based on threaded lifting control. Background Technology

[0002] Toy forklifts, as a popular type of engineering machinery toy, are designed to simulate the movement, steering, and cargo lifting functions of real forklifts. These toys not only entertain children but also cultivate their spatial cognition and operational coordination skills to a certain extent.

[0003] In the existing technology, in order to realize the lifting function of the forklift boom, the common solution is to use a "gear and elastic rack" transmission mechanism. This mechanism usually consists of a drive motor driving one or more reduction gears, which then mesh with an elastic plastic rack with teeth. When the gear rotates, it drives the rack to move in the vertical direction, thereby driving the boom connected to the rack to lift and lower.

[0004] However, after long-term and frequent bending and stress, the elastic rack is prone to plastic deformation, tooth wear, or even breakage, which leads to the failure of the lifting function and seriously shortens the service life of the toy. Secondly, this type of structure has poor self-locking. When the boom is carrying a certain weight (even if it is a light object within the range of toys), the rack may retract or slip due to the reverse force on the gear, which poses a safety hazard. Utility Model Content

[0005] The purpose of this invention is to provide a toy forklift based on threaded lifting control to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a toy forklift based on threaded lifting control, comprising: a vehicle body and a bracket fixed on the vehicle body; a traveling component disposed at the bottom of the vehicle body, wherein a front wheel is connected to the traveling component for controlling the movement of the vehicle body; a lifting component disposed on the bracket, wherein a boom is connected to the lifting component, and a transmission reduction mechanism connected to the lifting component is disposed on the vehicle body, wherein the transmission reduction mechanism can control the boom to move in the vertical direction through the lifting component; and a steering component disposed on the vehicle body for controlling the steering of the vehicle body.

[0007] As a further embodiment of this utility model: the traveling component includes a first motor fixed to the bottom of the vehicle body, a gearbox connected to the output shaft of the first motor is provided at the bottom of the vehicle body, a drive rod connected to the gearbox is rotatably mounted at the bottom of the vehicle body, and the drive rod is fixedly connected to the front wheel.

[0008] As a further embodiment of this utility model: the lifting assembly includes symmetrically distributed limiting slots formed on the bracket, a lead screw is rotatably mounted on the bracket, a threaded sleeve is threadedly connected to the lead screw, a limiting plate is fixed on the threaded sleeve and slidably engaged with the limiting slots, and the limiting plate is fixedly connected to the boom.

[0009] As a further embodiment of this utility model: the transmission reduction mechanism includes a second motor fixed to the bottom of the vehicle body, a worm gear rotatably mounted on the bottom of the vehicle body and connected to the output shaft of the second motor, and a worm wheel rotatably mounted on the bottom of the vehicle body and meshing with the worm gear; it also includes a first transmission group and a second transmission group disposed on the vehicle body.

[0010] As a further embodiment of this utility model: the first transmission group includes a first gear fixed on the worm gear shaft, and a second gear is rotatably mounted on the bottom of the vehicle body, the second gear meshing with the first gear.

[0011] As a further embodiment of this utility model: the second transmission group includes a third gear fixed on the second gear shaft, and a transmission gear is fixed on the lead screw, the transmission gear meshing with the third gear.

[0012] As a further embodiment of this utility model: the steering assembly includes rear wheels rotatably mounted on the vehicle body and symmetrically distributed, with a support arm hinged to the rear wheel, a rack plate fixed on the support arm, a third motor fixed to the bottom of the vehicle body, and a reduction gear set connected to the output shaft of the third motor provided at the bottom of the vehicle body, the reduction gear set meshing with the rack plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a transmission and reduction mechanism composed of a worm gear and multi-stage gears to convert the high-speed rotation of the second motor into the extremely low-speed, high-torque rotation of the lead screw. This makes the lifting speed of the boom driven by the threaded sleeve very slow and uniform, completely avoiding the jumping, jamming, or sudden drop phenomena commonly found in traditional rack and pinion lifting. At the same time, both the worm gear and lead screw transmission have natural self-locking characteristics, which can effectively prevent the boom and load from sliding down due to their own weight after the motor stops supplying power, greatly improving operational safety and the feasibility of simulating real load operations.

[0014] In terms of movement, the gearbox reduces the power of the first motor and increases its torque, making the front wheel drive smooth and the speed easy to control. This avoids the "lurching" phenomenon common in toys and makes the driving feel closer to that of a real vehicle. In terms of steering, a rack and pinion driven by a third motor and transmitted through a reduction gear set is used to adjust the rear wheel yaw angle in sync. The reduction gear set ensures that the steering action is slow and smooth, avoiding the tendency to roll over due to sharp turns. Attached Figure Description

[0015] Figure 1 A schematic diagram of one embodiment of a toy forklift based on threaded lifting control;

[0016] Figure 2 A schematic diagram of the bottom structure of a toy forklift based on threaded lifting control in one embodiment;

[0017] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 This is a schematic diagram showing the connection relationship between the lifting assembly and the transmission reduction mechanism in one embodiment of a toy forklift based on threaded lifting control.

[0019] Figure 5 This is a schematic diagram of some lifting components and transmission reduction mechanism in one embodiment of a toy forklift based on threaded lifting control.

[0020] Figure 6 This is a schematic diagram of the structure of the first motor, gearbox, and drive rod in one embodiment of a toy forklift based on threaded lifting control.

[0021] Figure 7 This is a schematic diagram of the structure of the reduction gear set, support arm, and rack plate in one embodiment of a toy forklift based on thread lifting control.

[0022] In the diagram: 1. Vehicle body; 2. Bracket; 201. Limiting slot; 3. Lead screw; 4. Threaded sleeve; 5. Limiting plate; 6. Crane boom; 7. Drive rod; 8. Front wheel; 9. First motor; 10. Gearbox; 11. Second motor; 12. Worm gear; 13. Worm wheel; 14. First gear; 15. Second gear; 16. Third gear; 17. Transmission gear; 18. Third motor; 19. Reduction gear set; 20. Support arm; 2001. Rack plate; 21. Rear wheel. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Furthermore, the elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Please see Figures 1-7 In this embodiment of the present invention, a toy forklift based on threaded lifting control includes: a vehicle body 1 and a bracket 2 fixed on the vehicle body 1; a traveling component disposed at the bottom of the vehicle body 1, wherein a front wheel 8 is connected to the traveling component for controlling the movement of the vehicle body 1; a lifting component disposed on the bracket 2, wherein a boom 6 is connected to the lifting component, and a transmission reduction mechanism connected to the lifting component is disposed on the vehicle body 1, wherein the transmission reduction mechanism can control the boom 6 to move in the vertical direction through the lifting component; and a steering component disposed on the vehicle body 1 for controlling the steering of the vehicle body 1.

[0026] Specifically, when using the toy forklift, the movement of the vehicle body 1 can be controlled by the travel and steering components to ensure that the boom 6 can be moved to the required position. At the same time, the height of the boom 6 can be adjusted through the cooperation of the transmission reduction mechanism and the lifting component. During the adjustment process, the transmission reduction mechanism can ensure that the lifting component operates in a slow and smooth manner, thereby ensuring that the boom 6 maintains good stability when raising or lowering the height, thus ensuring a longer service life for the toy forklift.

[0027] Please see Figure 1 , Figure 2 , Figure 5 The traveling assembly includes a first motor 9 fixed to the bottom of the vehicle body 1, a gearbox 10 connected to the output shaft of the first motor 9 is provided at the bottom of the vehicle body 1, a drive rod 7 connected to the gearbox 10 is rotatably mounted at the bottom of the vehicle body 1, and the drive rod 7 is fixedly connected to the front wheel 8.

[0028] In detail, the gearbox 10 is composed of multiple parallel gears. Through the meshing of the gears, the output power is transmitted. When it is necessary to control the movement of the vehicle body 1, the first motor 9 works, and its output shaft drives the input gear inside the gearbox 10 to rotate. The gearbox 10 is composed of multiple sets of parallel gears that mesh sequentially. Through the combination of gears with different numbers of teeth, a specific transmission ratio is formed. This gear transmission system converts the high-speed, low-torque power output by the first motor 9 into the lower-speed, higher-torque rotational motion required by the drive rod 7. The rotational motion of the drive rod 7 is directly transmitted to the front wheel 8, which is fixedly connected to it, thereby driving the front wheel 8 to rotate at a stable speed, providing a smooth traction force for the vehicle body 1. Through the transmission of the gearbox 10, the influence of the fluctuation of the output speed of the first motor 9 on the travel speed can be effectively reduced, making the forward and backward movements of the toy forklift smoother and more controllable. It avoids the speed change or jerking phenomenon that may occur due to the direct drive of the motor. This not only improves the operation feel and simulation realism of the toy, but also helps to extend the service life of the first motor 9 and transmission components by reducing transmission impact.

[0029] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 The lifting assembly includes symmetrically distributed limiting slots 201 formed on the bracket 2. A lead screw 3 is rotatably mounted on the bracket 2. A threaded sleeve 4 is threadedly connected to the lead screw 3. A limiting plate 5 is fixed on the threaded sleeve 4 and slidably engaged with the limiting slots 201. The limiting plate 5 is fixedly connected to the boom 6.

[0030] Please see Figures 1-5 The transmission reduction mechanism includes a second motor 11 fixed to the bottom of the vehicle body 1, a worm gear 12 rotatably mounted on the bottom of the vehicle body 1 and connected to the output shaft of the second motor 11, and a worm wheel 13 rotatably mounted on the bottom of the vehicle body 1 and meshing with the worm gear 12; it also includes a first transmission group and a second transmission group disposed on the vehicle body 1, the first transmission group including a first gear 14 fixed on the rotating shaft of the worm wheel 13, a second gear 15 rotatably mounted on the bottom of the vehicle body 1 and meshing with the first gear 14, the second transmission group including a third gear 16 fixed on the rotating shaft of the second gear 15, and a transmission gear 17 fixed on the lead screw 3 and meshing with the third gear 16.

[0031] Furthermore, the number of teeth on the worm gear 13 is greater than that on the first gear 14, the number of teeth on the first gear 14 is less than that on the second gear 15, the number of teeth on the second gear 15 is greater than that on the third gear 16, and the number of teeth on the third gear 16 is less than that on the transmission gear 17. Therefore, when the worm gear 12 controls the rotation of the worm gear 13, the rotational speed is gradually reduced as the transmission passes through the first gear 14, the second gear 15, and the third gear 16 to the transmission gear 17. Initially, under the action of the lead screw 3, the height of the threaded sleeve 4, the limiting plate 5, and the boom 6 is minimized. When it is necessary to raise the boom 6 to its maximum height... At this time, the second motor 11 operates, and its output shaft drives the worm 12 connected to it to rotate. The rotation of the worm 12, through meshing with the worm wheel 13, causes the worm wheel 13 to rotate at a speed much lower than that of the worm 12, achieving the first stage of speed reduction and significantly increasing the output torque. The rotating shaft of the worm wheel 13 drives the first gear 14 fixed thereon to rotate synchronously. The first gear 14 meshes with the second gear 15, which has more teeth. The second gear 15 rotates at a lower speed and with higher torque, completing the second stage of speed reduction. The rotating shaft of the second gear 15 drives the third gear 16 fixed thereon to rotate synchronously. The third gear 16 meshes with the transmission gear 17, which has more teeth. The transmission gear 17 rotates with a further reduced speed and a further increased torque, completing the third stage of reduction. Finally, the transmission gear 17 transmits the rotational motion, after multiple stages of reduction and torque amplification, to the lead screw 3, which is fixedly connected to it. The lead screw 3 begins to rotate slowly but with sufficient torque. Since the threaded sleeve 4 meshes with the lead screw 3 through its internal thread, and the limiting plate 5 fixed on the threaded sleeve 4 is constrained within the limiting groove 201 of the bracket 2, it can only slide up and down and cannot rotate. Therefore, the slow rotation of the lead screw 3 forces the threaded sleeve 4 to move along... The axial direction of the lead screw 3 moves upward smoothly and at a constant speed; the upward movement of the threaded sleeve 4 is transmitted to the boom 6 through the limit plate 5, driving the boom 6 to rise smoothly as a whole. In summary, through the multi-stage reduction of the transmission reduction mechanism, the movement of the boom 6 can be ensured to be relatively smooth, avoiding the shaking, impact or instability that may occur during rapid lifting and lowering, greatly improving the safety and realism of the toy operation. Secondly, the increased torque through multi-stage reduction ensures that even when the front end of the boom 6 is carrying a certain weight of simulated goods, the lifting action can still be carried out stably and reliably, without motor stalling or insufficient power.

[0032] Please see Figure 2 , Figure 6 The steering assembly includes rear wheels 21 rotatably mounted on the vehicle body 1 and symmetrically distributed. A support arm 20 is hinged to the rear wheel 21, and a rack plate 2001 is fixed on the support arm 20. A third motor 18 is fixed to the bottom of the vehicle body 1, and a reduction gear set 19 connected to the output shaft of the third motor 18 is provided at the bottom of the vehicle body 1. The reduction gear set 19 meshes with the rack plate 2001.

[0033] Furthermore, the reduction gear set 19 is configured similarly to the aforementioned transmission reduction mechanism, driven by the worm gear 12 and achieving final reduction and torque increase through the transmission of the worm wheel 13 and multiple sets of gears. The support arm 20 is hinged to the extension arm of the rear wheel 21 shaft in the circumferential direction. In the initial state, the two rear wheels 21 are parallel to the two front wheels 8. When steering is required, the third motor 18 operates, and the output shaft of the third motor 18 drives the input shaft of the reduction gear set 19 to rotate. The reduction gear set 19 internally transmits the high speed output by the third motor 18 through the meshing transmission of the worm gear 12, worm wheel 13 and multiple sets of gears, converting the high speed output by the third motor 18 into the extremely low speed of the output shaft, while amplifying the torque accordingly. Under the action of the output gear of the reduction gear set 19, the rack plate 2001 is driven to move, thereby converting the rotational motion into the linear motion of the rack plate 2001 along its length. The linear motion of the rack plate 2001 drives the fixed support arm 20 to move synchronously. Since the support arm 20 and the extension arms on the two rear wheels 21 form a parallelogram structure, the support arm 20 forces the two rear wheels 21 to deflect at the same angle around the rotation connection point with the vehicle body 1, thereby achieving a synchronous change in the orientation of the two rear wheels 21. In this way, the slow steering action achieved by the reduction gear set 19 makes the toy forklift smooth and gentle when changing direction, avoiding the risk of tipping over or impact on the internal transmission structure that may be caused by sharp turns.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A toy forklift based on threaded lifting control, characterized in that, include: The vehicle body and the bracket fixed to the vehicle body; the travel assembly is disposed at the bottom of the vehicle body, and the travel assembly is connected to the front wheel for controlling the movement of the vehicle body; A lifting assembly is mounted on the bracket, and a boom is connected to the lifting assembly. A transmission and reduction mechanism connected to the lifting assembly is provided on the vehicle body. The transmission and reduction mechanism can control the boom to move in the vertical direction through the lifting assembly. A steering assembly is mounted on the vehicle body and is used to control the steering of the vehicle body. The lifting assembly includes symmetrically distributed limiting slots formed on the bracket. A lead screw is rotatably mounted on the bracket. A threaded sleeve is threadedly connected to the lead screw. A limiting plate is fixed on the threaded sleeve and slidably engaged with the limiting slots. The limiting plate is fixedly connected to the boom.

2. A toy forklift based on threaded lifting control according to claim 1, characterized in that, The traveling assembly includes a first motor fixed to the bottom of the vehicle body, a gearbox connected to the output shaft of the first motor is provided at the bottom of the vehicle body, a drive rod connected to the gearbox is rotatably mounted at the bottom of the vehicle body, and the drive rod is fixedly connected to the front wheel.

3. A toy forklift based on threaded lifting control according to claim 1, characterized in that, The transmission reduction mechanism includes a second motor fixed to the bottom of the vehicle body, a worm gear rotatably mounted on the bottom of the vehicle body and connected to the output shaft of the second motor, and a worm wheel rotatably mounted on the bottom of the vehicle body and meshing with the worm gear; it also includes a first transmission group and a second transmission group disposed on the vehicle body.

4. A toy forklift based on threaded lifting control according to claim 3, characterized in that, The first transmission assembly includes a first gear fixed on the worm gear shaft, and a second gear rotatably mounted on the bottom of the vehicle body, the second gear meshing with the first gear.

5. A toy forklift based on threaded lifting control according to claim 4, characterized in that, The second transmission assembly includes a third gear fixed on the shaft of the second gear, and a transmission gear fixed on the lead screw, the transmission gear meshing with the third gear.

6. A toy forklift based on threaded lifting control according to claim 1, characterized in that, The steering assembly includes rear wheels rotatably mounted on the vehicle body and symmetrically distributed, with a support arm hinged to the rear wheel and a rack plate fixed to the support arm. A third motor is fixed to the bottom of the vehicle body, and a reduction gear set connected to the output shaft of the third motor is provided at the bottom of the vehicle body. The reduction gear set meshes with the rack plate.

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