A footrest child scooter

Abstract

The utility model discloses a foot pedal child twisty car, including fixed axle, fixed axle includes the axle body that extends along vertical direction and is located the adapter platform that projects and extends along the radial outward to the axle body, and is fixed on the upper surface of adapter platform and projects upward along the axle line direction of axle body and extends along the circumference of adapter platform limit structure, the arc length of the section groove that is greater than limit structure is set up to the corresponding limit structure position after the sleeve pipe is assembled on fixed axle, when fixed axle is driven to swing relative to sleeve pipe to any one side rotation to the maximum angle under the swing of foot control wheel swing component, the side of limit structure and the corresponding side of section groove are in contact to make any footboard and connecting pipe still have a spacing. Can play to limit the swing amplitude of foot control wheel swing component, has improved the use security, and limit structure and fixed axle are integral structure, and the spare part is fewer, when assembling and disassembling, also more simple and quick.

Description

Technical Field

[0001] This utility model belongs to the field of children's toy car technology, specifically relating to a pedal-powered children's twist car. Background Technology

[0002] The pedal-powered children's twist car, also known as a rocking car, is a very popular and environmentally friendly children's vehicle. It moves simply by rocking the steering wheel left and right. Affordable and suitable for parent-child activities, it can be played solo or in groups, fostering children's learning abilities and teamwork. Its low profile also contributes to its safety.

[0003] For example, Chinese patent CN201179937Y discloses a twist scooter, including a foot-controlled wheel swing assembly, a connecting assembly, a rotating assembly, and a seat. The swing assembly has a front wheel, and the seat has a rear wheel. The foot-controlled wheel swing assembly is connected to the seat via the rotating assembly. The foot-controlled wheel swing assembly includes a fixed shaft and a foot pedal device. The fixed shaft is connected to the rotating assembly, the foot pedal device, and the front wheel. The rotating assembly includes a sleeve, upper and lower bearings, and round-headed hexagonal screws. The sleeve is fixed to the end of a connecting tube, which consists of multiple sleeved parts. In use, the front wheel rotates around the rotating assembly by controlling the foot pedal device with both feet, thus steering the entire twist scooter. However, in this type of twist scooter, the angle of rotation of the foot-controlled wheel swing assembly around the rotating assembly is unrestricted, meaning the rotation amplitude is difficult to control. This can easily lead to excessive rotation angles. The larger the rotation angle, the closer the connecting tube is to the foot pedal of the foot-controlled wheel swing assembly. This can easily cause the connecting tube to collide and injure the child's lower leg or foot, resulting in injury. In other words, the twist scooter with the above-mentioned technical solution has low safety. Therefore, this utility model was developed. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to provide a pedal-powered children's twist car that solves the problem of difficulty in controlling the steering range of existing pedal-powered children's twist cars, which can easily cause injuries to children. It can limit the steering range, making it safer to use, and has a simple structure with fewer parts, making assembly and disassembly more convenient and quick.

[0005] The technical solution of this utility model is:

[0006] One objective of this utility model is to provide a pedal-operated children's twist car, including a seat frame, a foot-controlled wheel swing assembly, and a rotating assembly. The foot-controlled wheel swing assembly is rotatably connected to the seat frame via a connecting tube of the rotating assembly. The rotating assembly includes a fixed shaft extending vertically on the foot-controlled wheel swing assembly and a sleeve fixed to the connecting tube with its axis extending vertically through it. The fixed shaft and the sleeve are rotatably engaged. The foot-controlled wheel swing assembly includes a swing rod whose axis is perpendicular to the axis of the connecting tube. The two ends of the swing rod are foot pedals. The fixed shaft includes a shaft extending vertically. The shaft body and the adapter platform are provided on the shaft body and extend radially outward. A limiting structure is fixed on the upper surface of the adapter platform, which protrudes upward along the axis of the shaft body and extends circumferentially along the adapter platform. After the sleeve is assembled on the fixed shaft, a groove with an arc length greater than that of the limiting structure is opened at the position corresponding to the limiting structure. When the fixed shaft is driven by the swing of the foot control wheel swing assembly to rotate to the maximum angle relative to the sleeve, one side of the limiting structure abuts against the corresponding side of the groove so that there is still a gap between any foot pedal and the connecting pipe.

[0007] Preferably, the limiting structure includes at least a limiting part that is offset from the center of the adapter platform and located near the side of the adapter platform and extends along the circumferential direction of the adapter platform. The limiting part is provided on the two side walls of the adapter platform in the circumferential direction as limiting surfaces. The groove is an arc-shaped notch with an arc radius less than or equal to π. The two side walls of the arc-shaped notch are provided as limiting abutment surfaces. Any of the limiting abutment surfaces can abut against the limiting surface on its corresponding side when the fixed shaft is driven by the swing of the foot control wheel swing assembly to rotate to the maximum angle relative to the sleeve.

[0008] Preferably, the limiting structure further includes an annular portion protruding from the upper surface of the adapter and concentrically arranged with the fixed shaft and the adapter, and having a radius smaller than that of the adapter. The limiting portion is integrally formed on one side of the annular portion.

[0009] Preferably, the outer diameter of the sleeve is the same as the outer diameter of the adapter, and the outer edge of the limiting part is located inside the outer edge of the adapter.

[0010] Preferably, the adapter and the shaft body are an integral structure or welded together.

[0011] Preferably, the limiting structure and the adapter are an integral structure or welded together.

[0012] Preferably, the limiting structure is an integral structure with the shaft body or is welded together.

[0013] Preferably, the limiting structure is an integral structure with the shaft body and the adapter, or is welded together.

[0014] Preferably, at least one bearing is provided between the shaft body and the sleeve. The top end of the shaft body is locked and fixed by a fastening screw. A washer is provided between the fastening screw and the inner ring of the bearing, and a washer is also provided between the inner ring of the bearing and the annular part of the limiting structure or the upper surface of the transition platform.

[0015] Preferably, at least two bearings are provided between the shaft body and the sleeve, which are spaced apart along the axial direction of the shaft body, and a spacer sleeve is provided between two adjacent bearings and fitted onto the shaft body.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] The present invention relates to a pedal-powered children's twist car, which has a limiting part or a limiting structure consisting of a limiting part and an annular part fixed on a fixed shaft. A groove is opened on the sleeve to match the limiting part of the limiting structure, which can limit the swing amplitude of the foot control wheel swing component, thereby improving the safety of use. Moreover, the limiting structure and the fixed shaft are an integral structure, with fewer parts, making assembly and disassembly simpler and faster. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a structural diagram of the foot control wheel swing assembly of the pedal-powered children's twist car in an embodiment of the present invention when it is not swinging;

[0020] Figure 2 This is an exploded view of a pedal-powered children's twist car according to an embodiment of the present invention (only the rotating component is exploded).

[0021] Figure 3 This is a schematic diagram of the foot control wheel swing assembly of the pedal-powered children's twist car according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the connecting tube and sleeve of the pedal-powered children's twist car according to an embodiment of the present invention;

[0023] Figure 5 for Figure 1 A cross-sectional diagram of a pedal-powered children's twist car;

[0024] Figure 6 for Figure 5 A magnified view of part A in the image;

[0025] Figure 7This is a schematic diagram of the foot control wheel swing assembly of the pedal-powered children's twist car according to an embodiment of the present invention, when it swings to the right to its maximum angle.

[0026] The components are as follows: 10. Rotating assembly; 11. Fixed shaft; 111. Shaft body; 112. Adapter platform; 113. Limiting structure; 1131. Limiting part; 1132. Annular part; 12. Sleeve; 121. Groove; 13. Bearing; 14. Fastening screw; 15. Washer; 16. Spacer sleeve; 20. Foot control wheel swing assembly; 21. Swing rod; 211. Foot pedal; 22. Longitudinal connecting rod; Front wheel; 30. Seat frame; 31. Connecting pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0028] See Figures 1 to 7 This utility model discloses a pedal-operated children's twist car, including a seat frame 30, a foot-controlled wheel swing assembly 20, and a rotating assembly 10. Specifically, the foot-controlled wheel swing assembly 20 is connected to the seat frame 30 via the rotating assembly 10, and is a longitudinal extension of the front end of the seat frame 30. Figure 2 The connecting tube 31, extending from right to left, is rotatably connected. The rotating assembly 10 includes a vertically extending fixed shaft 11 mounted on the foot control wheel swing assembly 20 and a sleeve 12 fixedly connected to the end of the connecting tube 31 away from the seat 30 (i.e., the front end), with its axis vertical and penetrating through it. The foot control wheel swing assembly 20 includes an axis perpendicular to the axis of the connecting tube 31, i.e., laterally or along... Figure 2 The swing arm 21 extending in the front-to-back direction, the longitudinal connecting rod 22 whose axis is aligned with the axis of the connecting tube 31, and the front wheel 23 connected to the end of the longitudinal connecting rod 22 away from the swing arm 21 are shown. The two ends of the swing arm 21 are also the left and right ends of the user, or as shown in the diagram. Figure 2 The front and rear ends shown are foot pedals 211 for children to step on. The structure of the foot pedals 211 is not described or limited, and is not an innovation of this invention. In the prior art, the rotating assembly 10 does not have a limiting structure 113, or in some hoverboards, although there is a limiting structure 113, it is separate from the fixed shaft 11. Assembly and disassembly require separate assembly and disassembly, resulting in many parts and cumbersome assembly. The innovation of this invention lies in designing the limiting structure 113 to be fixed to the fixed shaft 11; that is, the limiting structure 113 is also part of the fixed shaft 11. Specifically, as shown... Figure 2 and Figure 3As shown, the fixed shaft 11 includes a shaft body 111 and a transition platform 112. The axis of the shaft body 111 is vertical, and its lower end is fixed to the longitudinal connecting rod 22 of the foot control wheel swing assembly 20. Specifically, its upper end, located above the transition platform 112, is rotatably engaged with the sleeve 12, and the outer diameter of its upper end is smaller than the outer diameter of its lower end. Regarding the transition platform 112, in this embodiment of the invention, the transition platform 112 is a ring-shaped platform fixed in the middle section of the shaft body 111, i.e., between the upper and lower ends, and extending radially outward. The outer diameter of the transition platform 112 is consistent with the outer diameter of the sleeve 12. A limiting structure 113 is fixed (an integral structure, i.e., integrally machined or welded together) on the upper surface of the transition platform 112, and the limiting structure 113 protrudes along the axial direction of the shaft body 111, i.e., protrudes upward from the upper surface of the transition platform 112 and extends along the circumferential direction of the transition platform 112. Correspondingly, such as Figure 2 and Figure 4 As shown, a groove 121 corresponding to the limiting structure 113 is formed on the side wall of the sleeve 12. The circumferential extension length of the groove 121, i.e., the arc length, is greater than the circumferential extension length of the limiting structure 113 along the adapter 112. This allows the sleeve 12 to rotate relative to the shaft body 111 in any direction, such as clockwise or counterclockwise, or towards the user's right or left side, by a certain angle. In other words, when the sleeve 12 is assembled on the shaft body 111, when the fixed shaft 11 is driven by the swing of the foot control wheel swing assembly 20 and rotates to the maximum angle relative to the sleeve 12, one side of the limiting structure 113 abuts against the corresponding side of the groove 121 to form a limit, thereby constraining the rotation amplitude of the foot control wheel swing assembly 20 relative to the sleeve 12 and ensuring that there is still a suitable distance between any foot pedal 211 and the connecting tube 31. This distance ensures that the connecting tube 31 will not collide with the child's foot or lower leg, i.e., a safety distance (e.g., as shown in the image). Figure 1 The foot control wheel swing assembly 20 shown is not swinging relative to the connecting tube 31. At this time, the angle α between any foot pedal 211 and the connecting tube 31 is 90°. When the foot control wheel swing assembly 20 swings to either side, as... Figure 7As shown, the angle between one foot pedal 211 and the connecting pipe 31 decreases while the angle between the other foot pedal 211 and the connecting pipe 31 increases. However, due to the presence of the limiting structure 113, the minimum angle is a fixed value β. This minimum angle is not specifically described or limited; those skilled in the art can design it based on the premise that the connecting pipe 31 will not hit the child's foot or lower leg. Thus, the child's foot or lower leg will not be hit. In summary, the twist car of this utility model embodiment, by fixing a limiting part 1131 or a limiting structure 113 composed of a limiting part 1131 and an annular part 1132 on the fixed shaft 11, and correspondingly opening a groove 121 on the sleeve 12 to cooperate with the limiting part 1131 of the limiting structure 113, can limit the swing amplitude of the foot control wheel swing assembly 20, thereby improving the safety of use. Moreover, the limiting structure 113 and the fixed shaft 11 are an integral structure, with fewer parts, making assembly and disassembly simpler and faster.

[0029] Furthermore, regarding the limiting structure 113, such as Figures 2 to 4 As shown, it includes an annular portion 1132 and a generally arc-shaped limiting portion 1131. The annular portion 1132 and the limiting portion 1131 are integral structures. The annular portion 1132 is concentrically arranged with the shaft body 111 and the adapter 112, protrudes from the upper surface of the adapter 112 along the axial direction of the shaft body 111, and extends radially outward from the outer peripheral wall of the shaft body 111. The radius of the annular portion 1132 is smaller than the radius of the adapter 112, specifically, the radius of the annular portion 1132 is consistent with the inner diameter of the sleeve 12. That is, the inner peripheral wall of the sleeve 12 is rotatably engaged with the outer peripheral wall of the annular portion 1132. The limiting portion 1131 is formed on one side of the outer wall surface of the annular portion 1132, and the outer edge of the limiting portion 1131 is located within the outer edge of the adapter 112. As an optional embodiment, the limiting structure 113 may only include the limiting part 1131, that is, without the annular part 1132, as long as it is ensured that the two sides of the limiting part 1131 can respectively abut against the two sides of the groove 121 to form a limiting position during use.

[0030] In this embodiment of the invention, the fixed shaft 11 is an integral structure, meaning the shaft body 111 and the adapter 112 are integrally machined or welded together. As an alternative embodiment, the shaft body 111 and the adapter 112 may also be non-integral structures or not welded together, but simply, for example, interference-fitted together. For the limiting structure 113 and the fixed shaft 11, an integral structure is preferred, meaning they are integrally machined. As an alternative embodiment, they may also be separate structures and welded together before the foot control wheel swing assembly 20 and the seat 30 are assembled. Exemplarily, the limiting structure 113 is only integrally structured or welded together with the adapter 112. Again, exemplarily, the limiting structure 113 is only integrally structured or welded together with the shaft body 111. Still exemplarily, the limiting structure 113, the shaft body 111, and the adapter 112 are integrally structured or welded together. In this embodiment of the utility model, the limiting structure 113, the shaft body 111, and the adapter 112 are preferably integrated or welded together.

[0031] For groove 121, specifically it is an arc-shaped notch with an arc radius less than or equal to π, according to the embodiment of this utility model. Figure 4 For example, π. That is to say, in... Figure 4 The lower front wall of the sleeve 12 shown is cut away axially upwards and radially backwards to form a groove 121. The axial dimension of the groove 121 is not specifically described or limited; it can be the same thickness as or slightly larger than the thickness of the limiting portion 1131. The two side walls of the arc-shaped notch, i.e., the groove 121, are implemented as limiting abutment surfaces, and specifically, the two side walls of the limiting portion 1131 are implemented as limiting surfaces circumferentially. The limiting surface and the limiting abutment surface are in abutment fit. When the fixed shaft 11 is driven by the swing of the foot control wheel swing assembly 20 to rotate relative to the sleeve 12 to any side, one of the limiting surfaces will abut against the limiting abutment surface on its corresponding side, so that the fixed shaft 11 will no longer continue to rotate relative to the sleeve 12 in that direction. However, since the circumferential extension length of the groove 121, that is, the arc length, is greater than the circumferential extension length of the limiting part 1131, the fixed shaft 11 can be driven by the swing in the opposite direction to rotate relative to the sleeve 12 to the opposite side until the limiting surface and the limiting abutment surface on the opposite side abut against each other and no longer continue to rotate in the opposite direction.

[0032] The rotatable connection between the shaft body 111 and the sleeve 12 is achieved by the following structure, such as... Figure 2 and Figure 6As shown, two bearings 13 are spaced apart along the axial direction on the outer peripheral surface of the shaft body 111, specifically at the end above the upper surface of the adapter 112. The bearings 13 are conventional rolling bearings, etc. The inner ring is fixed to the shaft body 111, and the outer ring can rotate relative to the inner ring. To prevent the sleeve 12 from separating from the fixed shaft 11, a fixing hole extending downward along its axial direction is provided at the top of the shaft body 111. A fastening screw 14 is provided in the corresponding fixing hole. The sleeve 12 is fixed to the foot control wheel swing assembly 20 by locking the fastening screw 14 into the fixing hole and pressing it against the upper end of the inner ring of the bearing 13. Furthermore, gaskets 15 are provided between the fastening screw 14 and the top of the shaft body 111 and the inner ring of the bearing 13, and between the lower end of the inner ring of the bearing 13 and the annular portion 1132 or the upper surface of the adapter 112. To ensure that there is a gap between two adjacent bearings 13 and that they do not interfere with each other, a spacer sleeve 16 is provided between the two adjacent bearings 13, which is fitted onto the outer periphery of the shaft body 111. The upper and lower ends of the spacer sleeve 16 abut against the inner rings of the upper and lower bearings 13, respectively. The material and length of the spacer sleeve 16 are not specifically limited or described, and are not an innovation of this utility model. As an alternative embodiment, the number of bearings 13 is not limited to... Figure 6 The two shown can also be other quantities, such as one or three, etc.

[0033] In this embodiment of the invention, the connecting pipe 31 and the sleeve 12 are integrally formed or welded together. The other end of the connecting pipe 31 is connected to the short connecting pipe (not shown) between the frame 30 and the bracket 30 using a pin (not shown) or other connecting components. The specific structure is not described or limited, and is not an innovation of this invention. The specific structural composition and connection position relationship of the bracket 30 are not described or limited, and are not an innovation of this invention.

[0034] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A pedal-operated children's twist car, comprising a seat frame, a foot-controlled wheel swing assembly, and a rotating assembly, wherein the foot-controlled wheel swing assembly is rotatably connected to the seat frame via a connecting tube of the rotating assembly, the rotating assembly comprising a fixed shaft extending vertically on the foot-controlled wheel swing assembly and a sleeve fixed to the connecting tube and having its axis extending vertically through it, the fixed shaft and the sleeve being rotatably engaged, the foot-controlled wheel swing assembly comprising a swing rod whose axial direction is perpendicular to the axial direction of the connecting tube, the two ends of the swing rod being configured as foot pedals, characterized in that... The fixed shaft includes a shaft body extending vertically and a transition platform disposed on the shaft body and extending radially outward. A limiting structure is fixed on the upper surface of the transition platform, which protrudes upward along the axial direction of the shaft body and extends circumferentially along the transition platform. After the sleeve is assembled onto the fixed shaft, a groove with an arc length greater than that of the limiting structure is opened at the position corresponding to the limiting structure. When the fixed shaft is driven by the swing of the foot control wheel swing assembly to rotate to the maximum angle relative to the sleeve, one side of the limiting structure abuts against the corresponding side of the groove so that there is still a gap between any foot pedal and the connecting pipe.

2. The pedal-powered children's twist car according to claim 1, characterized in that, The limiting structure includes at least a limiting part that is offset from the center of the adapter platform and located near the side of the adapter platform and extends along the circumferential direction of the adapter platform. The limiting part is provided on the two side walls of the adapter platform in the circumferential direction as limiting surfaces. The groove is an arc-shaped notch with an arc radius less than or equal to π. The two side walls of the arc-shaped notch are provided as limiting abutment surfaces. Any of the limiting abutment surfaces can abut against the limiting surface on its corresponding side when the fixed shaft is driven by the swing of the foot control wheel swing assembly to rotate to the maximum angle relative to the sleeve.

3. The pedal-powered children's twist car according to claim 2, characterized in that, The limiting structure also includes an annular portion protruding from the upper surface of the adapter and concentrically arranged with the fixed shaft and the adapter, and with a radius smaller than that of the adapter. The limiting portion is integrally formed on one side of the annular portion.

4. The pedal-powered children's twist car according to claim 3, characterized in that, The outer diameter of the sleeve is the same as the outer diameter of the adapter, and the outer edge of the limiting part is located inside the outer edge of the adapter.

5. The pedal-operated children's twist car according to any one of claims 1-4, characterized in that, The adapter and the shaft body are either an integral structure or welded together.

6. The pedal-powered children's twist car according to claim 5, characterized in that, The limiting structure and the adapter are either an integral structure or welded together.

7. The pedal-operated children's twist car according to claim 5, characterized in that, The limiting structure is an integral structure with the shaft body or is welded together.

8. The pedal-powered children's twist car according to claim 5, characterized in that, The limiting structure is an integral structure with the shaft body and the adapter, or is welded together.

9. The pedal-powered children's twist car according to claim 3, characterized in that, At least one bearing is provided between the shaft body and the sleeve. The top end of the shaft body is locked and fixed by a fastening screw. A washer is provided between the fastening screw and the inner ring of the bearing, and a washer is also provided between the inner ring of the bearing and the annular part of the limiting structure or the upper surface of the transition platform.

10. The pedal-operated children's twist car according to claim 9, characterized in that, At least two bearings are provided between the shaft body and the sleeve, which are spaced apart along the axial direction of the shaft body, and a spacer sleeve is provided between two adjacent bearings and fitted onto the shaft body.

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