Single handle bionic control hand-operated full simulation motion toy excavator

Abstract

The application relates to the technical field of toys and discloses a single-handle bionic control hand-operated full-simulation moving toy excavator which comprises main body structures such as a bucket, a small arm, a large arm, an upper rotating platform, a central rotating structure, a lower rotating platform and mechanical transmission structures such as a sliding rod, a sliding groove, a small arm pull rod, a pull rod hinged movable shaft, a bucket pull rope and a bucket rotating shaft. The large arm is provided with the sliding groove, the sliding rod is located in the sliding groove, the pull rod hinged movable shaft is fixedly connected with the small arm, the small arm pull rod is hingedly connected with the pull rod hinged movable shaft and the sliding rod, and the annular bucket pull rope is oppositely and spirally wound with the bucket rotating shaft and the sliding rod, and the middle points of the winding are fixedly connected with the bucket rotating shaft and the sliding rod. Eight single-hand soil digging actions on the sliding rod are used to independently control the reciprocating motions of the large arm, the small arm, the bucket and the upper rotating platform. The control mechanism is simplified to one, single-hand simulation excavation control is realized, the control action is bionic single-hand soil digging action, the simulation excavation control is simple and easy to implement, and the simulation excavation control difficulty is remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of toy technology, specifically to a single-handle bionic control manual fully simulated sports toy excavator. Background Technology

[0002] Existing toy excavators cannot achieve one-handed control of all simulated digging movements and have several obvious design flaws, making it difficult to simultaneously achieve sufficiently simple operation and fully simulated digging. For example, one type of product has a relatively simple operation method, allowing one-handed mechanical control of fixed digging movements, or a one-button digging demonstration like a remote-controlled excavator, but it cannot control the digging arm to achieve complete simulated movements of all joints. Children cannot obtain a realistic digging experience, and the fun of operation during play is greatly reduced. Another type of product can achieve complete simulated digging movements of all joints of the excavator, but because one mechanical control mechanism can only control one joint independently, it requires the use of two or more mechanical handles or remote control joysticks. It requires skillful and smooth operation by arranging and combining eight different hand movements. The operation is numerous and complex, making it difficult to operate.

[0003] Current technology struggles to achieve both sufficiently simple operation and complete simulation of digging motion. It also fails to meet children's needs for engaging in simulated digging play through simple and easy-to-understand controls.

[0004] Therefore, a single-handle bionic control manual fully simulated sports toy excavator is proposed. By holding one control lever with one hand, all simulated excavation actions are completed with a bionic single-hand digging motion, solving the aforementioned problems and filling the technological gap in this area. Summary of the Invention

[0005] The purpose of this invention is to provide a single-handle bionic control manual fully simulated sports toy excavator, in order to solve the problem mentioned in the background art that it is difficult to simultaneously achieve simple operation and excavation simulation, and is not suitable for children's needs for simple operation of toy excavators while achieving complete simulated excavation play.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A single-handle bionic manual fully realistic sports toy excavator includes a bucket. A bucket shaft is fixedly mounted on the side of the bucket. A forearm is hinged to the side wall of the bucket shaft. A boom is hinged to one end of the forearm, and a boom hinge base is hinged to one end of the boom. A forward-sloping groove is formed on the side wall of the boom, and a slide rod is slidably connected within the groove. A slide rod winding disc is fixed on the slide rod. A pull rod hinge shaft is fixed on the forearm. The forearm and the slide rod are connected by a forearm pull rod. The two ends of the forearm pull rod are respectively hinged to the pull rod hinge shaft and the slide rod. A bucket shaft winding disc is fixed on the bucket shaft. The bucket and the slide rod are connected by a bucket pull rope, which is wound around the bucket shaft winding disc and the slide rod winding disc.

[0008] It also includes the boom and arm hinge shafts, the front hinge ring of the forearm lever, the rear hinge ring of the forearm lever, the guide rope pulley, the guide rope ring, the control lever, the slide dome, the boom hinge shaft, the elastic belt fixing shaft, the elastic belt, the anti-tilt stop bar, the upper turntable, the central rotary structure, the lower turntable, the traveling mechanism, the TPU soft rubber sleeve, the anti-slip rubber, the compartment door, and the outer shell.

[0009] Preferably, the starting point of the slide groove is the area where the forearm lever intersects the left and right sidewalls of the upper arm when the forearm and upper arm are parallel and the forearm lever moves in a circular motion around the lever hinge axis; the ending point of the slide groove is the area where the forearm lever intersects the left and right sidewalls of the upper arm when the forearm lever moves in a circular motion around the upper arm hinge axis with the radius equal to the distance between the lever hinge axis and the upper and lower arm hinge axes plus the sum of the straight distances between the front and rear ends of the forearm lever; the dimensions of the slide dome and the control lever are both larger than the slide groove.

[0010] Preferably, the forearm and the upper arm are hinged together by the hinge shaft; the hinge shaft is located in the upper middle part of the rear end of the forearm; the pull rod hinge shaft is fixedly connected to the left and right side walls of the forearm, located in front of and below the hinge shaft and maintaining a certain distance from it.

[0011] Preferably, the forearm lever has an overall L-shape on the side and a fork with U-shaped openings at both ends on the front. The forearm lever has transverse U-shaped forks at both ends, with the distance between the two ends of the front U-shaped fork being slightly less than the distance between the left and right inner walls of the forearm, and front hinge rings at both ends of the front U-shaped fork. The distance between the two ends of the rear U-shaped fork is slightly less than the distance between the left and right inner walls of the upper arm, and rear hinge rings are provided at both ends of the rear U-shaped fork. The front hinge ring of the forearm lever is hinged to the lever hinge shaft, and the rear hinge ring of the forearm lever is hinged to the slide bar. The guide rope ring is fixedly installed at the middle bend of the L-shaped forearm lever.

[0012] Preferably, one end of the bucket pull rope is spirally wound around the bucket shaft winding turntable, and the midpoint of the winding is inserted through and fixed inside the bucket shaft winding turntable; after contacting and passing the upper side of the guide rope fixed pulley, the bucket pull rope passes through the guide rope ring; the other end of the bucket pull rope is spirally wound around the slide rod winding turntable in a relatively opposite direction, and the midpoint of the winding is inserted through and fixed inside the slide rod winding turntable.

[0013] Preferably, the boom is hinged to the boom hinge base via a boom hinge shaft; the lower end of the boom hinge base is fixedly installed in an area outside the rotation center of the upper turntable; a central rotary structure is fixedly installed at the center of the lower end of the upper turntable; a lower turntable is rotatably installed at the lower end of the central rotary structure; a traveling mechanism is fixedly installed at the lower end of the lower turntable; the anti-tilt stop is fixedly connected to the boom hinge base; elastic band fixing shafts are fixedly installed between the inner side of the lower end of the boom and the left and right sidewalls of the boom hinge base; and an elastic band is fixedly installed between the two elastic band fixing shafts.

[0014] Preferably, the bucket pull rope is made of a rope material that is inelastic and not easily deformed; the boom pull rod, boom, and boom are made of rigid materials that are not easily deformed.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention utilizes a specific transmission structure and connection relationship to achieve independent control of four components—the upper turntable, boom, forearm, and bucket—through a single joystick, enabling eight biomimetic single-handed digging movements. Its advantages include: a simple control mechanism, with a single joystick achieving independent control of all joints without the need for multiple joysticks; a biomimetic design that closely mimics single-handed digging movements, making it easy to understand; a simple transmission structure, using a sliding rod, forearm lever, and bucket rope for control, eliminating the need for multiple gears, motors, or hydraulic rods, resulting in lower costs; and a concealed transmission structure with a clean appearance.

[0017] It achieves simple operation and fully jointed simulated digging, allowing children to operate it with just one hand to dig, filling the gap in children's demand for simple and fully jointed simulated digging toys. When using this device, children can grasp, rotate, push, and pull at will to form corresponding digging actions. When the various parts of the excavator move due to the child's operation, it will bring children the fun of operation. At the same time, it can achieve precise simulated digging, and the accuracy of digging depends on the child's level of control and the precision of operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall side perspective structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the overall internal structure of the present invention;

[0021] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B;

[0023] Figure 6 This is a schematic diagram of the overall bottom structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the forearm tie rod system structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the bucket rope system structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the TPU soft rubber sheath structure of the present invention;

[0027] Figure 10 For the present invention Figure 9 Enlarged view at point C;

[0028] Figure 11 This is a schematic diagram of the TPU soft rubber sheath structure of the present invention;

[0029] Figure 12 This is a schematic diagram of the outer shell structure of the present invention;

[0030] Figure 13 This is a schematic diagram of the forearm and upper arm sidewalls of the present invention;

[0031] Figure 14 For the present invention Figure 13 Enlarged structural diagram at point D;

[0032] Figure 15 For the present invention Figure 13 Enlarged structural diagram at point E;

[0033] Figure 16 This is a schematic diagram of the forearm and upper arm sidewalls of the present invention;

[0034] Figure 17 This is a schematic diagram of the forearm and upper arm sidewalls of the present invention;

[0035] In the diagram: 1. Bucket; 2. Bucket shaft; 3. Bucket shaft winding turntable; 301. Left side wall of the bucket shaft winding turntable; 302. Right side wall of the bucket shaft winding turntable; 303. Middle partition wall of the bucket shaft winding turntable; 4. Boom; 401. Front end of the boom; 402. Rear end of the boom; 403. Left side wall of the boom; 404. Right side wall of the boom; 405. Upper side wall of the boom; 406. Small 5. Lower sidewall of the arm; 501. Upper arm; 502. Upper arm front end; 503. Upper arm rear end; 504. Upper arm front left sidewall; 505. Upper arm front right sidewall; 506. Upper arm front upper sidewall; 507. Upper arm rear left sidewall; 508. Upper arm rear right sidewall; 509. Upper arm rear upper sidewall; 510. Upper arm rear lower sidewall; 511. Upper arm bend point; 6. Boom and boom hinge shaft; 7. Tie rod hinge shaft; 8. Boom tie rod; 9. Front hinge ring of the boom tie rod; 10. Rear hinge ring of the boom tie rod; 11. Bucket pull rope; 12. Guide rope fixed pulley; 13. Guide rope ring; 14. Sliding rod winding turntable; 1401. Left side wall of the sliding rod winding turntable; 1402. Right side wall of the sliding rod winding turntable; 1403. Middle partition wall of the sliding rod winding turntable; 15. Slide groove; 16. Control lever; 17. Sliding rod; 18. Slide... 19. Boom dome; 20. Boom hinge shaft; 21. Boom hinge base; 22. Elastic band fixing shaft; 23. Elastic band; 24. Anti-tilt bar; 25. Upper turntable; 26. Central slewing structure; 27. Lower turntable; 28. Traveling mechanism; 29. ​​TPU soft rubber sleeve; 30. Anti-slip rubber; 31. Door; 32. Outer shell; 3101. Boom hinge base outer shell; 3102. Boom outer shell; 3103. Arm outer shell; 33. Handle. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] Example

[0038] I. Main Structure

[0039] Please see Figures 1 to 11 A single-handle bionic control manual fully simulated sports toy excavator includes a bucket 1 and a bucket shaft 2 fixedly installed on the side of the bucket 1. A forearm 4 is hinged to the side wall of the bucket shaft 2, a boom 5 is hinged to one end of the forearm 4, and a boom hinge base 20 is hinged to one end of the boom 5.

[0040] It also includes a bucket shaft winding turntable 3, boom and arm hinge shaft 6, tie rod hinge moving shaft 7, arm tie rod 8, arm tie rod front hinge ring 9, arm tie rod rear hinge ring 10, bucket pull rope 11, guide rope fixed pulley 12, guide rope ring 13, slide rod winding turntable 14, slide groove 15, control lever 16, slide rod 17, slide rod dome 18, boom hinge shaft 19, elastic belt fixed shaft 21, elastic belt 22, anti-tilt stop bar 23, upper turntable 24, central slewing structure 25, lower turntable 26, and traveling mechanism 27.

[0041] II. Connection Relationships of the Main Structure

[0042] (a) Boom articulated base, turntable and traveling mechanism

[0043] The boom 5 is hinged to the boom hinge base 20 via the boom hinge shaft 19. The upper turntable 24 is fixedly installed at the lower end of the boom hinge base 20. The boom hinge base 20 is located in the area outside the rotation center of the upper turntable 24. The central rotating structure 25 is fixedly installed at the lower middle of the upper turntable 24. The lower turntable 26 is rotatably installed at the lower end of the central rotating structure 25.

[0044] An elastic band fixing shaft 21 is fixedly installed between the inner side of the boom 5 and the boom hinge base 20, and an elastic band 22 is fixedly installed between the two elastic band fixing shafts 21.

[0045] A walking mechanism 27 is fixedly installed at the lower end of the lower turntable 26. The walking mechanism 27 consists of four symmetrically and evenly arranged moving wheels. When the device needs to be moved, pushing the device will reduce friction through the moving wheels, thereby moving the device and enabling it to achieve fixed-point displacement. Limiting components can be set on the walking mechanism 27. When the device needs to be stationary for digging and playing, the limiting components can lock the moving wheels, preventing them from rolling and fixing the toy's position. This prevents the device from sliding due to force on the body during play, which would affect the digging and playing experience. When the position needs to be adjusted, the limiting components are unlocked, the moving wheels resume their rolling function, and pushing the device will move it, thereby achieving accurate fixed-point placement and meeting the position adjustment needs in different play scenarios.

[0046] An anti-tilt stop bar 23 is fixedly connected to the upper rear of the boom hinge base 20 by screws and is perpendicular to the movement trajectory of the boom 5. The anti-tilt stop bar 23 is a cuboid strip structure and can be made of inorganic or plastic materials. When the boom 5 is horizontal and rotated back to 140°±5°, the anti-tilt stop bar 23 contacts the rear side of the boom to form a mechanical limit, which can prevent the boom from tilting too far back. When the boom swings forward or is in a horizontal state, the anti-tilt stop bar maintains a preset gap with the boom hinge base and does not affect the normal movement of the boom.

[0047] The upper turntable 24 and the lower turntable 26 can be hollow, and a door 30 is provided on the outside of the hollow part of the upper turntable 24 and the lower turntable 26. In actual operation, sand can be injected into the hollow part of the upper turntable 24 and the lower turntable 26. After the hollow part of the upper turntable 24 and the lower turntable 26 is filled with sand, the door 30 is closed. At this time, the center of gravity of the device moves downward, so as to achieve the technical effect of lowering the center of gravity of the device and preventing overturning. This helps to improve the technical problem of top-heavy operation of general toy excavators.

[0048] (ii) Upper arm and forearm

[0049] For ease of description, the components are defined as follows: the end of the forearm 4 that connects to the bucket 1 is the forearm front end 401, the end of the forearm 4 that connects to the boom 5 is the forearm rear end 402, and the four sides of the forearm 4 are the left side wall 403, the right side wall 404, the upper side wall 405, and the lower side wall 406; the end of the boom 5 that connects to the forearm 4 is the boom front end 501, the end of the boom 5 that connects to the boom hinge base 20 is the boom rear end 502, the four sides from the bend point 511 of the boom 5 to the boom front end 501 are the boom left side wall 503, the boom right side wall 504, the boom upper side wall 505, and the boom lower side wall 506, and the four sides from the bend point 511 of the boom 5 to the boom rear end 502 are the boom rear section left side wall 507, the boom rear section right side wall 508, the boom rear section upper side wall 509, and the boom rear section lower side wall 510.

[0050] Both the upper arm 5 and the lower arm 4 are hollow square tubes. The rear end 402 of the lower arm 4 is hinged to the front end 501 of the upper arm 5 via a hinge shaft 6, which is located in the upper middle part of the rear end 402 of the lower arm 4.

[0051] The lengths of the upper sidewall 505 and lower sidewall 506 of the upper arm 5 are less than the lengths of the left sidewall 503 and right sidewall 504 of the upper arm, and the lengths of the upper sidewall 505 and lower sidewall 506 of the upper arm 5 are slightly greater than the distance between the upper sidewall 405 and lower sidewall 406 of the forearm 4, thus reserving space for the forearm 4 to swing back and forth, and also providing children with a direct visual experience of mechanical manipulation and movement. The front ends of the left sidewall 503 and right sidewall 504 of the upper arm 5 are arranged in an arc shape that gradually tapers from the upper sidewall 505 to the lower sidewall 506 of the upper arm 5.

[0052] The pull rod hinge shaft 7 is located on the side of the upper side wall 505 of the upper arm, parallel to the line drawn by the upper and lower arm hinge shaft 6, closer to the lower side wall 406 of the forearm. Preferably, the distance between the pull rod hinge shaft 7 and the upper and lower arm hinge shaft 6 is slightly less than three-quarters of the distance between the upper and lower inner side walls of the upper arm 5. The pull rod hinge shaft 7 is rigidly connected to the left side wall 403 and the right side wall 404 of the forearm. The forearm pull rod 8 is made of rigid material and is hinged to both the pull rod hinge shaft 7 and the slide rod 17.

[0053] (III) Bucket and boom

[0054] The bucket shaft 2 is rigidly connected to the bucket 1, and the bucket shaft 2 is hinged to the front end 401 of the boom 4. The bucket 1 and the front end 401 of the boom 4 maintain a preset gap, which does not affect the normal movement of the bucket 1.

[0055] III. Mechanical Transmission Structure

[0056] (a) Slide

[0057] The slide groove 15 is formed on the side wall of the upper arm 5. The starting point of the slide groove 15 is the intersection area of ​​the rear end hinge ring 10 of the forearm 4 and the left and right side walls of the upper arm 5 when the forearm 4 and the upper arm 5 are parallel and the forearm rod 8 makes a circular motion around the hinge axis 7. The ending point of the slide groove 15 is the intersection area of ​​the left and right side walls of the upper arm 5 with the radius of the circular motion around the hinge axis 6 of the upper arm and the forearm 4, which is the distance between the hinge axis 7 and the hinge axis 6 of the upper and lower arms plus the straight distance between the front and rear ends of the forearm rod 8. The width of the slide groove 15 is slightly larger than the diameter of the slide rod 17. The slide rod 17 is slidably connected in the slide groove 15. The dimensions of the slide rod dome 18 and the control lever 16 are both larger than the slide groove 15.

[0058] Since the side of the forearm tie rod 8 is an L-shaped rod, the guide rope ring 13 can be fixedly installed at the middle bend of the L-shaped rod forearm tie rod 8. The forearm tie rod 8 and the slide groove 15 are limiting components for the forearm 4. The forearm 4 can only extend forward to a position that is level with the boom 5 through the forearm tie rod 8 and the slide groove 15, and will not overturn backward. The limiting of the forearm 4 when digging backward is the same.

[0059] (ii) Slide bar

[0060] A part of the joystick 16 is located inside the large arm 5 and slides within the sliding groove 15 of the large arm 5. The portion of the joystick 16 that lies inside the sliding groove 15 of the large arm 5 is referred to as the operating slide rod, abbreviated as "slide rod 17"; another part of the joystick 16 is exposed outside the large arm for hand-held operation, this portion is referred to as the operating grip rod, abbreviated as "handle 32". The diameter of the handle 32 is larger than the diameter of the slide rod 17, and the handle 32 is shaped as a half-moon protruding forward. The slide rod 17 is generally configured as a shape formed by rotating a "T" shape around its central axis, and the side that forms a circular surface after rotation is referred to as the slide rod dome 18; the diameters of the slide rod dome 18 and the handle 32 are larger than the width of the sliding groove 15, which together axially limit the joystick 16 within the sliding groove 15.

[0061] The handle 32 is provided with non-slip rubber 29, which wraps the handle 32 inside. The non-slip rubber 29 itself has high friction, enabling children to easily grip the joystick 16, facilitating the control of the joystick 16, and being adaptable to the average grip strength range of children.

[0062] A slide rod wire-winding turntable 14 is arranged at the middle position of the slide rod 17. The cross-section from the center to the outer edge of the slide rod wire-winding turntable 14 is in a "mountain" shape, that is, the shape obtained by rotating the "mountain" shape around its lower vertex for one full turn in the front-back direction is the configuration of the slide rod wire-winding turntable. The surface formed by the left vertical line of the rotated "mountain" shape is referred to as the left side wall 1401 of the slide rod wire-winding turntable, the surface formed by the right vertical line is referred to as the right side wall 1402 of the slide rod wire-winding turntable, and the surface formed by the middle vertical line between the left and right side walls is referred to as the middle partition wall 1403 of the slide rod wire-winding turntable. The diameter of the slide rod wire-winding turntable 14 is larger than the diameter of the slide rod 17, and the slide rod wire-winding turntable 14 is rigidly and fixedly connected to the slide rod 17.

[0063] The diameter of the slide rod wire-winding turntable 14 is approximately twice the diameter of the bucket rotating shaft wire-winding turntable 3, that is, the rotation angle of the wrist is approximately 90 degrees, and the rotation angle of the bucket 1 is approximately 180 degrees. By controlling the ratio of the wire-winding diameters of the bucket pull cord 11 on the slide rod 17 and the bucket rotating shaft 2, the bucket 1 can be flexibly controlled to move within the flexible movement range of the wrist.

[0064] The bucket rotating shaft wire-winding turntable 3 follows the same principle as the slide rod wire-winding turntable 14. The bucket rotating shaft wire-winding turntable 3 is arranged at the corresponding position, with its left side wall being 301, right side wall being 302, and middle partition wall being 303. The bucket rotating shaft wire-winding turntable 3 is rigidly connected to the bucket rotating shaft 2.

[0065] (3) Forearm pull rod

[0066] Forearm 4 and upper arm 5 are hinged together by hinge shaft 6, which passes through the overlap of the rear end 402 of the forearm and the front end 501 of the upper arm, and is located in the upper middle part of the left side wall 403 and the right side wall 404 of the forearm. The pull rod hinge shaft 7 is located on the left side wall 403 and the right side wall 404 of the forearm, and is positioned slightly below and in front of the hinge shaft 6, maintaining a certain distance from it. The pull rod hinge shaft 7 is rigidly connected to the forearm 4 through an interference fit; therefore, the swing angle of the pull rod hinge shaft 7 relative to the hinge shaft 6 is equal in magnitude and synchronous with the swing angle of the forearm 4 relative to the hinge shaft 6.

[0067] The forearm lever 8 is made of a rigid material that is not easily deformed. The rigid material can be an inorganic material, such as low-carbon steel and carbon fiber.

[0068] The forearm lever 8 has an overall L-shape on the side, with an angle equal to or similar to that of the upper arm 5. The front of the forearm lever 8 is a fork with U-shaped openings at both ends, meaning that the front and rear ends of the forearm lever 8 are horizontally branched into U-shapes. The distance between the two ends of the front U-shaped branch is slightly less than the inner distance between the left side wall 403 and the right side wall 404 of the forearm. A front hinge ring 9 is provided at both ends of the front U-shaped branch, which is a rigid ring structure for hinged with the forearm hinge shaft 7. The distance between the two ends of the rear U-shaped branch is slightly less than the inner distance between the left side wall 503 and the right side wall 504 of the front section of the upper arm. A rear hinge ring 10 is provided at both ends of the rear U-shaped branch, which is a rigid ring structure that is rigidly connected to the lever.

[0069] The guide rope fixed pulley 12 is fixedly installed at the midpoint of the pull rod hinge shaft 7; the guide rope ring 13 is fixedly installed at the middle bend of the L-shaped rod forearm pull rod 8; the front end hinge ring 9 of the forearm pull rod is hinged to the pull rod hinge shaft 7, and the rear end hinge ring 10 of the forearm pull rod is hinged to the slide rod 17, so that the forearm pull rod 8 is perpendicular to the pull rod hinge shaft 7 and the slide rod 17, that is, the forearm pull rod 8 is parallel to the left side wall 503 of the front section of the upper arm, the right side wall 504 of the front section of the upper arm, the left side wall 403 of the forearm, and the right side wall 404 of the forearm.

[0070] The minimum gap between the forearm tie rod 8 and the left side wall 503, the right side wall 504 of the front section of the upper arm, and the left and right side walls 403 and 404 of the forearm is ≥1mm. A PTFE coating can be sprayed on the surface of the forearm tie rod 8 to reduce friction. When a micro-collision occurs, it will not affect the smoothness of movement. The distance between the inner walls of the left side wall 503 and the right side wall 504 of the front section of the upper arm is slightly larger than the bifurcation distance of the hinge ring 10 at the rear end of the forearm tie rod. The two form a natural gap. When the forearm 4 is fully extended or retracted, the minimum gap between the forearm tie rod 8 and the side wall of the upper arm 5 is ≥1mm. This can prevent the transmission mechanism such as the forearm tie rod 8 from colliding with the side wall of the upper arm 5 when the forearm 4 swings. Because the friction is small, when the deformation of the components causes a slight collision, it will not affect the movement effect of the transmission mechanism.

[0071] Mechanical lubricant can be applied between the hinge shaft 6 of the boom and forearm, and between the forearm 4 and the boom 5, to reduce wear caused by friction and extend the service life of the device. This also improves the smoothness of the device. The slight, relatively horizontal friction that may occur between the transmission structure such as the forearm tie rod 8 and the left and right side walls of the boom 5 and forearm 4 has a negligible impact on the digging motion. Furthermore, the left and right front walls 503 and 504 of the boom, as well as the left and right side walls 403 and 404 of the forearm, also serve as guide grooves for the forearm tie rod 8, providing guidance for any slight friction or collision. The boom 5 and forearm 4 are made of rigid materials, which have high rigidity and are not easily deformed.

[0072] (iv) Bucket pull rope

[0073] The bucket pull rope 11 is made of a non-elastic rope material that is not easily deformed. One end of the bucket pull rope 11 is spirally wound around the bucket shaft winding turntable 3, and the midpoint of the winding is inserted and fixed inside the partition wall 303 of the bucket shaft winding turntable. The other end of the bucket pull rope 11 is spirally wound around the slide rod winding turntable 14 in the opposite direction, and the midpoint of the winding is inserted and fixed inside the partition wall 1403 of the slide rod winding turntable. The spiral winding directions of the bucket pull rope 11 on the bucket shaft winding turntable 3 and the slide rod winding turntable 14 are opposite to each other. The rope sections on the same side either both exit from the top or both from the bottom on the bucket shaft winding turntable 3 and the slide rod winding turntable 14.

[0074] The winding path of the bucket pull rope 11 is as follows: starting from the bucket shaft winding turntable 3, passing above the guide rope fixed pulley 12, below the boom and arm hinge shaft 6, then through the guide rope ring 13, and finally reaching the slide rod winding turntable 14. Under this bucket pull rope path, the bucket 1 can dig and lower arbitrarily, the arm 4 can swing arbitrarily, the slide rod 17 can slide arbitrarily, the boom 5 can rise and fall arbitrarily, and the upper turntable 24 can rotate arbitrarily. The total distance of the above path remains unchanged, and the pull rope can always be kept taut, thus effectively transmitting the rotation on the slide rod 17 to the bucket shaft 2. Alternatively, under this specific pull rope path, the rotation on the slide rod 17 can be effectively transmitted to the bucket shaft 2 through gears, chains, or other means, realizing the reciprocating drive of the slide rod 17 on the bucket shaft 2.

[0075] IV. Protective Outer Shell

[0076] (a) Connection method of protective shell

[0077] A housing 31 is detachably connected to the boom 5, forearm 4, and boom hinge base 20. The housing 31 is made of ABS with a wall thickness of ≥1.5mm and can cover the transmission mechanism. The housing 31 encloses the boom, forearm, and hinge base to prevent the elastic band 22, guide rope ring 13, slide bar winding turntable 14, guide rope fixed pulley 12, boom and forearm hinge shaft 6, bucket shaft winding turntable 3, and other structures from being exposed, thus preventing children from accidentally touching them.

[0078] The outer shell 31 is divided into three parts: the upper arm hinge base shell 3101, the upper arm shell 3102, and the forearm shell 3103.

[0079] The boom hinge base housing 3101 is mainly used to cover the elastic band fixing shaft 21, the elastic band 22, and the anti-tilt stop bar 23. The boom housing 3102 mainly covers the boom 5, the forearm tie rod 8, the rear hinge ring 10 of the forearm tie rod, the guide rope ring 13, the slide rod winding turntable 14, and the slide rod 17. A bellows-like protective housing is provided at the upper part of the boom hinge base housing 3101 and the connection between the boom housing 3102 and the boom housing 3102. The bellows-like protective housing protects and covers the internal structure while ensuring that the movement of the boom 5 is not restricted. When the boom 5 is pressed down, the rear bellows-like protective housing unfolds and the front bellows-like protective housing folds inward and compresses. When the boom 5 is raised up, the rear bellows-like protective housing folds inward and compresses, and the front bellows-like protective housing unfolds.

[0080] The boom housing 3103 mainly covers the bucket shaft winding turntable 3, the boom and arm hinge shaft 6, the tie rod hinge shaft 7, the boom tie rod 8, the boom tie rod front hinge ring 9, and the bucket pull rope 11; the boom housing 3102 and the boom housing 3103 are disconnected at the boom and arm hinge shaft 6 and are not connected; the boom housing 3102 and the boom housing 3103 will not affect the working space of the boom 4 and the boom 5, and the boom hinge base housing 3101 will not affect the working space of the boom 4 and the boom 5.

[0081] (ii) Connection method of TPU soft rubber sleeve of transmission structure

[0082] The exposed structures such as the elastic band 22, guide rope ring 13, slide bar winding turntable 14, guide rope fixed pulley 12, boom and arm hinge shaft 6, and bucket shaft winding turntable 3 can be fitted with TPU soft rubber sleeves 28. The TPU soft rubber sleeves 28 have a Shore hardness of 50A, which can achieve the technical effect of preventing pinching injuries and reduce the risk of injury to children during the use of this device.

[0083] The TPU soft rubber sleeve 28 is fitted onto the outside of the forearm pull rod 8, and the TPU soft rubber sleeve 28 of the forearm pull rod 8 adopts a segmented wrapping design.

[0084] The TPU soft rubber sleeve 28 of the slide rod 17 to the hinge shaft 7 of the tie rod is integrated. The rear end of the TPU soft rubber sleeve 28 of the boom tie rod 8 is a cube shape and is fitted on the outside of the slide rod winding turntable 14 and the rear hinge ring 10 of the boom tie rod, and is hinged to the slide rod 17. The front end extends to the hinge shaft 7 of the tie rod, and is fitted on the outside of the guide rope fixed pulley 12 and the front hinge ring 9 of the boom tie rod, and is hinged to the hinge shaft 7 of the tie rod. At the same time, it wraps the guide rope ring 13 inside, protecting the guide rope ring 13 without affecting the threading and sliding of the bucket tie rope 11. This section of TPU soft rubber sleeve 28 is fitted on the lower side of the boom and arm hinge shaft 6.

[0085] The TPU soft rubber sleeve 28 is divided into two sections at the pull rod hinge shaft 7, and the two sections of the TPU soft rubber sleeve are connected and transitioned at the lower side of the pull rod hinge shaft 7 and the boom hinge shaft 6. The TPU soft rubber sleeve 28 from the pull rod hinge shaft 7 to the bucket shaft 2 is a single piece, with the rear end fitted on the outside of the guide rope fixed pulley 12 and hinged to the pull rod hinge shaft 7, and the front end being a cube-shaped piece fitted on the outside of the bucket shaft winding turntable 3 and hinged to the bucket shaft 2. The TPU soft rubber sleeve 28 of the slide rod winding turntable 14 and the bucket shaft winding turntable 3 is a cube-shaped piece fitted on the outside of the slide rod winding turntable 14 and the bucket shaft winding turntable 3, which does not affect the winding and release of the bucket pull rope 11 and can protect its internal cables from being exposed. Furthermore, the TPU soft rubber sleeve 28 has a flexible and bendable structure, so even if the external structure undergoes slight deformation, it will not affect the movement effect. At the same time, the above-mentioned connection method protects the transmission structure from being exposed while not affecting the movement effect of the toy excavator, ensuring that the movement effect is not restricted.

[0086] The TPU soft rubber sleeve 28 of the elastic band 22 is sleeved on the outside of the elastic band fixing shaft 21, and has a stretchable pleated structure in the middle. The TPU soft rubber sleeve 28 can be bent and deformed as the elastic band 22 stretches and contracts.

[0087] The TPU soft rubber sleeve 28 prevents children from touching the internal transmission mechanism during play, thereby improving the safety, reliability and practicality of the device.

[0088] V. Connection Relationships of Motion Components and Motion Effects

[0089] (I) Overview of the connection relationships and motion effects of the present invention

[0090] The bucket 1 is hinged to the boom 4, the boom 4 is hinged to the boom 5, and the boom 5 is hinged to the boom hinge base 20. The forward and backward rotation of the control lever 16 is transmitted to the bucket 1 for digging and releasing motion through a specific winding method of the bucket pull rope 11.

[0091] The rigid L-shaped forearm lever 8, which is hinged at the front and rear, transmits the sliding motion of the control lever 16 along the sliding groove 15 to the forearm 4 swinging back and forth around the hinge axis 6 of the upper and lower arms. By applying a pulling or pressing force to the vertical sliding groove 15, the upper arm 5 is driven to swing up and down around the hinge axis 19 of the upper arm. By applying a left or right pushing or pulling force to the control lever 16 in the axial direction, the entire upper turntable 24 rotates to the left or right around the central rotary structure 25.

[0092] By holding the handle 32 of the control lever 16 and lifting or pressing along the vertical slide 15, the boom 5 rises and falls; by sliding back and forth along the slide 15, the forearm 4 swings back and forth; by rotating back and forth, the bucket 1 digs and places; by pushing or pulling left and right, the upper turntable 24 rotates left and right. This allows for four groups of eight control actions to be achieved through a single control lever 16, independently controlling the flexible and complete simulated motion of the boom 5, forearm 4, bucket 1, and upper turntable 24.

[0093] All the above controls can be performed individually or in any combination on the same joystick 16 simultaneously. This connection method provides control similar to single-handed digging, offering good biomimetic ergonomic control and ease of understanding and operation. It achieves fully articulated, flexible, and simulated digging motion for a toy excavator with simple, single-handle biomimetic control.

[0094] (II) Detailed description of the connection relationship of each motion component and the effect of motion control

[0095] 1. Connection relationship and control effect of bucket motion components

[0096] (1) Connection relationship of bucket moving components

[0097] The bucket 1 is rigidly fixedly connected to the bucket shaft 2, and the bucket shaft winding turntable 3 is rigidly fixedly connected to the bucket shaft 2. The bucket shaft 2 is hinged to the front end of the boom 4. The pull rod hinge shaft 7 and the guide rope fixed pulley 12 are made of high-strength and high-hardness metal materials with a diameter of about 1-2mm. The bending deformation of the pull rope at this point is negligible and does not affect the movement effect.

[0098] The bucket pull rope 11 is a ring-shaped pull rope or a bidirectional pull rope. It is spirally wound and connected to the bucket shaft winding turntable 3. The midpoint of the spiral wound part is inserted and fixed inside the bucket shaft winding turntable 3. The bucket pull rope 11 is connected to the guide rope fixed pulley 12 on the pull rod hinge shaft 7, the guide rope ring 13 on the bend of the L-shaped boom pull rod 8, and the slide rod winding turntable 14. The bucket pull rope 11 is spirally wound and connected to the slide rod winding turntable 14. The midpoint of the spiral wound part is inserted and fixed inside the slide rod winding turntable 14. Under any movement state, the total distance of this path remains unchanged, and the bucket pull rope 11 is always kept in a tense state.

[0099] (2) Control effect of bucket motion components

[0100] When the control lever 16 is rotated forward, the slide lever 17 drives the slide lever winding turntable 14 to rotate forward. The right side of the slide lever winding turntable 14 retracts the rope, while the left side releases the rope. The retraction of the rope on the right side of the slide lever winding turntable drives the right side of the bucket shaft winding turntable 3 to release the rope, while the left side retracts the rope. This causes the bucket shaft winding turntable 3 and the bucket shaft 2 to rotate forward, thereby driving the bucket 1, which is rigidly connected to the bucket shaft 2, to complete the digging action. When the control lever 16 is rotated backward, the rope retraction and release directions are reversed, causing the bucket 1 to open. Therefore, by rotating the control lever 16 forward and backward, the reciprocating control of the digging and releasing motion of the bucket 1 can be achieved.

[0101] 2. Connection relationship and motion effect of forearm motion components

[0102] (1) Connection relationship of forearm motion components

[0103] The rear end of the forearm 4 is hinged to the upper arm 5 via the upper arm hinge shaft 6. The pull rod hinge shaft 7 is rigidly fixedly connected to the left side wall 403 and the right side wall 405 of the forearm, located in front of and below the upper arm hinge shaft 6 and maintaining a certain distance from it. The front hinge ring 9 of the forearm pull rod is hinged to the pull rod hinge shaft 7, and the rear hinge ring 10 of the forearm pull rod is hinged to the slide rod 17.

[0104] (2) Movement control effect of forearm motion component

[0105] The sliding groove 15 pushes and pulls the control lever 16 back and forth, and the slide rod 17 slides back and forth along the sliding groove 15. The rigid forearm pull rod 8 independently drives the forearm 4 to swing back and forth around the hinge axis 6 of the upper and lower arms.

[0106] 3. Connection relationship and motion effect of upper arm motion components

[0107] (1) Connection relationship of upper arm motion components

[0108] The boom 5 is hinged to the boom hinge base 20 via the boom hinge shaft 19, and the boom 5 can only swing back and forth around the boom hinge shaft 19. The slide rod 17 is nested and slidably connected to the slide groove 15 of the boom 5.

[0109] (2) Control effect of upper arm motion component

[0110] The control lever 16 is raised and pressed in a direction perpendicular to the slide groove 15, and the slide rod 17 applies a pulling or pressing force to the boom 5 in a direction perpendicular to the slide groove 15, causing the boom 5 to swing up and down around the boom hinge axis 19.

[0111] 4. Connection relationship and motion effect of the upper turntable motion components

[0112] (1) Connection relationship of the upper turntable motion components

[0113] The boom 5 is hinged to the boom hinge base 20 via the boom hinge axis 19. The boom 5 can only swing back and forth around the boom hinge axis 19 and cannot rotate left and right relative to the boom hinge base 20. The boom hinge base 20 is rigidly connected to a part other than the rotation center point of the upper turntable 24. The upper turntable 24 is connected to the lower turntable 26 via the central rotary structure 25, and the upper turntable 24 can rotate left and right relative to the lower turntable 26.

[0114] (2) Control effect of the upper turntable motion component

[0115] Pushing or pulling the control lever 16 axially to the left or right, the left or right pushing or pulling force on the upper arm 5 is transmitted through the upper arm hinge base 20, which is rigidly connected to a part outside the rotation center point of the upper turntable 24, to a place outside the center of the central rotary joint, thereby driving the upper turntable 24 to rotate left and right.

[0116] The digging and lowering actions of bucket 1, the swinging action of boom 4, the lifting and pressing action of boom 5, and the rotation action of upper turntable 24 are controlled independently and do not affect other control actions. They can be performed individually or in any combination on the same control lever 16 simultaneously. For example, the digging and lowering action of bucket 1 is controlled independently and does not affect other control actions. The sliding lever 17 can be in any position within the sliding groove 15, the boom 4 can be in any swinging position, the boom 5 can be at any height, and the upper turntable 24 can be at any angle. The digging and lowering action of bucket 1 can be controlled arbitrarily. The same applies to other control actions.

[0117] When children use this device, they can rotate, push, and pull the joystick 16 to form corresponding digging actions. They can control it with a motion similar to digging with one hand to complete simulated digging and play. It is easy to understand and operate, has a high degree of simulated digging, and is very interesting.

[0118] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0119] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A single-handle bionic control manual fully simulated sports toy excavator, including a bucket (1), wherein a bucket shaft (2) is fixedly installed on the side of the bucket (1), characterized in that: The side wall of the bucket shaft (2) is hinged to a forearm (4), one end of the forearm (4) is hinged to a boom (5), and one end of the boom (5) is hinged to a boom hinge base (20); a forward-sloping groove (15) is provided on the side wall of the boom (5), a slide rod (17) is slidably connected in the groove (15), a slide rod winding turntable (14) is fixed on the slide rod (17), and a pull rod hinge shaft (7) is fixed on the forearm (4). The bucket (1) is connected to the slide rod (17) via a forearm pull rod (8). The two ends of the forearm pull rod (8) are respectively hinged to the pull rod hinge shaft (7) and the slide rod (17). A bucket shaft winding turntable (3) is fixed on the bucket shaft (2). The bucket (1) is connected to the slide rod (17) via a bucket pull rope (11). The bucket pull rope (11) is wound around the bucket shaft winding turntable (3) and the slide rod winding turntable (14). It also includes the boom and arm hinge shaft (6), the front hinge ring of the forearm lever (9), the rear hinge ring of the forearm lever (10), the guide rope fixed pulley (12), the guide rope ring (13), the control lever (16), the slide rod dome (18), the boom hinge shaft (19), the anti-tilt stop bar (23), the upper turntable (24), the central rotary structure (25), the lower turntable (26), and the traveling mechanism (27).

2. The single-handle bionic control manual fully simulated motion toy excavator according to claim 1, characterized in that: The starting point of the chute (15) is the area where the forearm (4) and the upper arm (5) are parallel, the forearm pull rod (8) moves in a circle around the pull rod hinge axis (7), and the intersection of the rear hinge ring (10) of the forearm pull rod with the left and right side walls of the upper arm (5). The endpoint of the slide groove (15) is the area where the rear hinge ring (10) of the forearm pull rod intersects the left and right side walls of the upper arm (5) when the distance between the pull rod hinge shaft (7) and the upper and lower arm hinge shaft (6) plus the sum of the straight distance between the front and rear ends of the forearm pull rod (8) is used as the radius to make a circular motion around the upper and lower arm hinge shaft (6); the dimensions of the slide rod dome (18) and the control lever (16) are both larger than the slide groove (15).

3. The single-handle bionic control manual fully simulated sports toy excavator according to claim 1, characterized in that: The forearm (4) and the upper arm (5) are hinged together by the hinge shaft (6); the hinge shaft (6) is located in the upper middle part of the rear end of the forearm (4); the pull rod hinge shaft (7) is fixedly connected to the left and right side walls of the forearm, located in front of and below the hinge shaft (6) and at a certain distance from it.

4. The single-handle bionic control manual fully simulated sports toy excavator according to claim 1, characterized in that: The forearm lever (8) has an L-shaped side and a fork with U-shaped openings at both ends on the front. The forearm lever (8) is bifurcated laterally at both ends. The distance between the two ends of the front U-shaped fork is slightly less than the distance between the left and right inner walls of the forearm (4), and a front hinge ring (9) is provided at both ends of the front U-shaped fork. The distance between the two ends of the rear U-shaped fork is slightly less than the distance between the left and right inner walls of the upper arm (5), and a rear hinge ring (10) of the forearm lever is provided at both ends of the rear U-shaped fork. The front hinge ring (9) of the forearm pull rod is hinged to the hinge shaft (7) of the pull rod, and the rear hinge ring (10) of the forearm pull rod is hinged to the slide rod (17); the guide rope ring (13) is fixedly installed at the middle bend of the L-shaped rod forearm pull rod (8).

5. The single-handle bionic control manual fully simulated sports toy excavator according to claim 1, characterized in that: One end of the bucket pull rope (11) is spirally wound around the bucket shaft winding turntable (3), and the midpoint of the winding is inserted and fixed inside the bucket shaft winding turntable (3); The bucket rope (11) contacts and passes over the upper side of the guide rope pulley (12) and then passes through the guide rope ring (13). The other end of the bucket pull rope (11) is wound in a reverse spiral around the slide bar winding turntable (14), and the midpoint of the winding is fixed inside the slide bar winding turntable (14).

6. The single-handle bionic control manual fully simulated sports toy excavator according to claim 1, characterized in that: The boom (5) is hinged to the boom hinge base (20) via the boom hinge shaft (19); The lower end of the boom hinge base (20) is fixedly installed in an area outside the rotation center of the upper turntable (24). A central rotary structure (25) is fixedly installed at the lower center of the upper turntable (24). A lower turntable (26) is rotatably installed at the lower end of the central rotary structure (25). A walking mechanism (27) is fixedly installed at the lower end of the lower turntable (26). The anti-tilt stop bar (23) is fixedly connected to the boom hinge base (20). Elastic belt fixing shafts (21) are fixedly installed between the inner side of the lower end of the boom (5) and the left and right side walls of the boom hinge base (20). An elastic belt (22) is fixedly installed between the two elastic belt fixing shafts (21).

7. The single-handle bionic control manual fully simulated sports toy excavator according to claim 1, characterized in that: The bucket pull rope (11) is made of a rope material that is inelastic and not easily deformed; the forearm pull rod (8), forearm (4), and boom (5) are made of rigid materials that are not easily deformed.

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