A child's vehicle

Abstract

This utility model discloses a children's stroller. A rotating column is connected to the front end of the main component. A steering handle is detachably connected to the upper end of the rotating column, and a front fork is detachably connected to the lower end of the rotating column. A front wheel is mounted on the front fork. A detachable connecting seat is fitted onto the main component, and a left and right rear leg are rotatably connected to the connecting seat. A left wheel seat is rotatably connected to the lower end of the left rear leg, and a left rear wheel is mounted on the left wheel seat. A right wheel seat is rotatably connected to the lower end of the right rear leg, and a right rear wheel is mounted on the right wheel seat. A rotating seat is connected to the rear end of the main component, and a socket is provided on the rotating seat. A connection port is provided on the connecting seat. The control component includes a lower connecting rod detachably connected to the rotating seat, and a control lever is connected to the lower connecting rod. A control rope is provided between the rotating seat and the rotating column. A seat is detachably connected to the main component, and a foot pedal is detachably connected to the front wheel. This utility model reduces product packaging volume and lowers unit transportation costs.

Description

Technical Field

[0001] This utility model relates to a children's stroller. Background Technology

[0002] Children's vehicles, such as tricycles and balance bikes, are widely used products during children's growth and play a positive role in promoting the development of children's physical coordination and motor skills.

[0003] Currently, most children's strollers on the market use fixed or simply folding connections for their frames, wheels, and other main structures. This design results in a large overall volume when packaged. During ocean shipping and land logistics, this bulky packaging occupies a significant amount of container space, limiting the number of strollers that can be loaded into a single standard container. Transportation costs constitute a significant proportion of the total product cost, and excessively large packaging directly increases the unit transportation cost, thereby weakening the product's price competitiveness in the market.

[0004] Therefore, this utility model is proposed based on the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a novel children's stroller. The structural design of this stroller significantly reduces the volume of the product in its packaged and transported state, thereby increasing the load capacity per shipment and reducing unit transportation costs.

[0006] This utility model is achieved through the following technical solution:

[0007] A children's vehicle includes a main body component. A rotating column, rotatable relative to the main body component, is connected to its front end. A steering handle is detachably connected to the upper end of the rotating column, and a front fork is detachably connected to the lower end of the rotating column. A front wheel is mounted on the front fork. A detachable connecting seat is fitted onto the main body component. A left and right rear legs, capable of unfolding or folding, are rotatably connected to the connecting seat. A left wheel seat is rotatably connected to the lower end of the left rear leg, and a left rear wheel, capable of rotating to the inside or outside of the left rear leg, is mounted on the left wheel seat. A right wheel seat is rotatably connected to the lower end of the right rear leg, and a right wheel, capable of rotating to the inside or outside of the right rear leg, is mounted on the right wheel seat. The right rear wheel, the rear end of the main body is connected to a swivel seat, the swivel seat is provided with a socket, the connecting seat is provided with a connection port that can communicate with the socket when it is fitted on the main body, the stroller also includes a control assembly, the control assembly includes a lower connecting rod that can be inserted into the connection port and the socket and is detachably connected to the swivel seat, the lower connecting rod is connected to a control lever that can extend or retract relative to it or be detached relative to it, a control rope is provided between the swivel seat and the rotating column that can drive the rotating column to rotate when the control assembly drives the swivel seat to rotate, a seat part can also be detachably connected to the main body, and a foot pedal can be detachably connected to the front wheel.

[0008] The joystick includes a middle connecting rod that is detachably connected to the lower connecting rod, and a push rod that can extend and retract relative to the middle connecting rod is connected to the middle connecting rod.

[0009] The seat is provided with a slot, and a backrest is detachably inserted into the slot. A closure is provided in the slot that can slide up and down. A first elastic element is provided between the closure and the seat to push the closure upward. When the backrest is inserted into the seat, the closure is pushed by the lower end of the backrest and moves to the bottom of the slot. When the backrest is detached from the seat, the first elastic element pushes the closure upward and closes the slot opening.

[0010] The insertion slot has a latch on its wall, and a locking block is provided on the backrest that can slide relative to it and engage with the latch when it is inserted into the insertion slot. A button is provided on the backrest that is connected to the locking block and can disengage the locking block from the latch when pressed. A second elastic element is provided inside the backrest that can push the button to reset.

[0011] The main component is provided with a mounting groove. The seat part includes a connecting column that can pass through the connecting seat and be inserted into the mounting groove and can be raised and lowered within the mounting groove. The upper end of the connecting column is connected to a seat that can slide back and forth relative to it and is used for riding. A first locking structure is provided between the connecting column and the main component for locking the height position of the connecting column.

[0012] A second locking structure is provided between the connecting seat and the main component for locking the two. The second locking structure includes a second locking groove on the main component, a second locking block that can engage or disengage from the second locking groove is slidably provided in the connecting seat, and a second operating block that can drive the second locking block to disengage from the second locking groove during operation is provided on the connecting seat. A second return spring that can push the second locking block to slide back to its original position is also provided in the connecting seat. The first locking structure includes a plurality of first locking grooves arranged along the height direction of the connecting column, a first locking block that can engage or disengage from the first locking groove is slidably provided in the main component, and a first operating block that can drive the first locking block to disengage from the first locking groove when pressed is also provided on the main component. A first return spring that can push the first locking block to slide back to its original position is also provided in the main component. A locking hole that can engage with the first operating block when the connecting seat is connected to the main component is provided.

[0013] The left hind leg is provided with a left connecting groove, and the right hind leg is provided with a right connecting groove. When the left and right hind legs are closed, U-shaped connecting pieces are inserted into the left and right connecting grooves. The lower side of the right hind leg is provided with a front connecting groove and a rear connecting groove for inserting connecting pieces when it is unfolded with the left hind leg.

[0014] The front fork includes a U-shaped fork, with a connecting shaft at the upper end that can be detachably connected to the rotating column. The front wheel is rotatably mounted inside the U-shaped fork. The connecting shaft has an annular connecting groove. A snap-fit ​​piece that can engage or disengage with the connecting groove is slidably mounted inside the rotating column. A fourth elastic element that can push the snap-fit ​​piece to slide back to its original position is also provided inside the rotating column. The main body includes a main beam and an annular seat fixed at the front end of the main beam and connected to the rotating column. The annular seat has a first insertion hole for inserting an external push pin to push the snap-fit ​​piece. The upper end of the U-shaped fork has multiple snap-fit ​​grooves. The lower end of the rotating column has a snap-fit ​​block that can engage with the snap-fit ​​groove when the snap-fit ​​piece engages with the connecting groove.

[0015] The rotating base is provided with a slot, and the lower connecting rod is provided with a protrusion that engages with the slot when it is inserted into the socket. The connecting port side wall of the connecting base is provided with a notch, and the lower connecting rod is provided with an anti-detachment block that can slide relative to it and can be inserted into the notch to prevent the lower connecting rod from coming out of the notch. The anti-detachment block is provided with a pressing block that can make the anti-detachment block come out of the notch when pressed. The lower connecting rod is also provided with a seventh return spring that can push the anti-detachment block to slide back to its original position. The notch extends in the circumferential direction so that the lower connecting rod can rotate within a set range.

[0016] The main component has a fixed shaft. The left and right hind legs rotate around the fixed shaft and can unfold or retract relative to each other. A fifth locking structure is provided between the left and right hind legs. The fifth locking structure includes a left connecting shell on the left hind leg and a right connecting shell on the right hind leg. The left connecting shell has multiple left locking grooves along the circumference, and the right connecting shell has multiple right locking grooves along the circumference. A locking gear that can simultaneously engage with the left and right locking grooves is slidably disposed within the space enclosed by the left and right connecting shells. The connecting seat has a sixth operating block that can push the locking gear to disengage from the left locking groove when pressed. An eighth return spring that can push the locking gear to reset is provided between the right connecting shell and the locking gear. The connecting seat has a first metal plate, the left hind leg has a second metal plate, and the right hind leg has a third metal plate. The first, second, and third metal plates are stacked and connected to each other. The connecting seat has a first sleeve and a second sleeve that are fixedly connected to the first metal plate and protrude upwards. The six operating blocks include an exposed pressing cap and a pusher pin disposed on the pressing cap and inserted into the first and second sleeves. The second metal plate is provided with a first clamping groove and a second clamping groove for relative movement of the first and second sleeves. The first clamping groove has a first starting end and a first ending end arranged in a clockwise direction. The second clamping groove has a second starting end and a second ending end arranged in a clockwise direction. The third metal plate is provided with a third clamping groove and a fourth clamping groove for relative movement of the first and second sleeves. The third clamping groove has a third starting end and a third ending end arranged in a counterclockwise direction. The fourth clamping groove has a fourth starting end and a fourth ending end arranged in a counterclockwise direction. When the left hind leg and the right hind leg are extended, the first starting end and the fourth starting end clamp the first sleeve, and the second starting end and the third starting end clamp the second sleeve. When the left hind leg and the right hind leg are closed, the first ending end and the fourth ending end clamp the first sleeve, and the second ending end and the third ending end clamp the second sleeve.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. When the left and right rear legs of this utility model children's vehicle are extended, the left rear wheel can rotate to the outside of the left rear leg, and the right rear leg can rotate to the outside of the right rear leg, allowing the children's vehicle to be used as a tricycle. When the left and right rear legs are folded, the left rear wheel rotates to the inside of the left rear leg, and the right rear wheel rotates to the inside of the right rear leg. At this time, the left and right rear wheels are close together, and the children's vehicle can be used as a balance bike. Therefore, the structure of this utility model children's vehicle can be adjusted according to the user's needs to meet the user's requirements. Moreover, adults can also control the direction of travel of the children's vehicle through the control components, making it convenient for adults to control it when needed. More importantly, the structure of this utility model of children's bicycle can significantly reduce the packaging volume in order to reduce transportation costs. Specifically, the steering handle, front fork, and seat of this utility model of children's bicycle can be detached from the main body component. The connecting seat and the left and right rear legs can be detached from the main body component as a whole. The lower connecting rod can also be detached and is retractable or detachable from the control lever. After disassembly, the left and right rear legs are folded together and the left and right rear wheels are close together. Therefore, the children's bicycle can be disassembled into multiple parts. In particular, the connecting seat, along with the left and right rear legs and the left and right rear wheels, can be detached from the main body component, which can ensure a sufficiently small packaging volume during packaging to reduce transportation costs. After the user receives the product, it can be assembled and used.

[0019] 2. The rotating seat on the main component of this utility model is provided with an insertion port, and the connecting seat is provided with a connection port that is opposite to the insertion port when it is connected to the main component. When the lower connecting rod is inserted into the insertion port, it will pass through the connection port, so that the lower connecting rod has sufficient insertion depth when connected to the rotating seat, ensuring that the child car is operated smoothly and is not easy to shake when operated by the lower connecting rod.

[0020] 3. This utility model is easy to assemble and disassemble, has a small transport volume, and is suitable for widespread application. Attached Figure Description

[0021] Figure 1 This is one of the perspective views of Embodiment 1 of this utility model as a tricycle;

[0022] Figure 2 This is the second perspective view of Embodiment 1 of this utility model as a tricycle;

[0023] Figure 3 This is one of the perspective views of Embodiment 1 of this utility model as a self-balancing scooter;

[0024] Figure 4 This is a second perspective view of Embodiment 1 of this utility model as a self-balancing scooter;

[0025] Figure 5 This is an exploded view of Embodiment 1 of this utility model;

[0026] Figure 6 This is one of the exploded views of the components of Embodiment 1 of this utility model;

[0027] Figure 7 This is a schematic diagram of the seat portion of Embodiment 1 of this utility model;

[0028] Figure 8 This is the second exploded view of a component of Embodiment 1 of this utility model;

[0029] Figure 9 This is one of the partial sectional views of Embodiment 1 of this utility model;

[0030] Figure 10 This is a second partial sectional view of Embodiment 1 of this utility model;

[0031] Figure 11 This is the third exploded view of the components of Embodiment 1 of this utility model;

[0032] Figure 12 yes Figure 11 Enlarged view of point A in the middle;

[0033] Figure 13 This is the fourth exploded view of the components of Embodiment 1 of this utility model;

[0034] Figure 14 This is the fifth exploded view of the components of Embodiment 1 of this utility model;

[0035] Figure 15 This is a perspective view of the front fork and front wheel of Embodiment 1 of this utility model;

[0036] Figure 16 This is one of the perspective views of the components in Embodiment 1 of this utility model;

[0037] Figure 17 This is the sixth exploded view of the components of Embodiment 1 of this utility model;

[0038] Figure 18 This is a third partial sectional view of Embodiment 1 of this utility model;

[0039] Figure 19 This is a second perspective view of the component of Embodiment 1 of this utility model;

[0040] Figure 20 This is the seventh exploded view of the components of Embodiment 1 of this utility model;

[0041] Figure 21 This is a fourth partial sectional view of Embodiment 1 of this utility model;

[0042] Figure 22 This is a partial cross-sectional view of Embodiment 1 with the left and right hind legs extended;

[0043] Figure 23This is a partial sectional view of Example 1 when the left and right hind legs are retracted;

[0044] Figure 24 This is a perspective view of the components in Embodiment 1 when the left and right hind legs are extended;

[0045] Figure 25 This is a perspective view of the components in Embodiment 1 when the left and right hind legs are retracted;

[0046] Figure 26 This is a partial schematic diagram of Embodiment 2 of this utility model;

[0047] Figure 27 This is a partial cross-sectional view of Embodiment 2 of this utility model. Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings:

[0049] Example 1:

[0050] like Figures 1 to 5 as well as Figure 20 As shown, a children's vehicle includes a main body component 11. A rotating column 12, which can rotate relative to the main body component 11, is connected to the front end of the main body component 11. A steering handle 13 for controlling the direction of travel is detachably connected to the upper end of the rotating column 12. A front fork 14 is detachably connected to the lower end of the rotating column 12. A front wheel 15 is provided on the front fork 14. A foot pedal 27 is detachably connected to the front wheel 15. A seat 26 for riding is detachably connected to the main body component 11. A detachable connecting seat 16 is also fitted on the main body component 11. A left rear leg 17 and a right rear leg 18, which can be unfolded or folded together, are rotatably connected to the connecting seat 16 via a fixed shaft 118. A left wheel seat 19 is rotatably connected to the lower end of the left rear leg 17. A left rear wheel 1a, which can rotate with the left rear leg 17 to the inside or outside of the left rear leg 17, is provided on the left wheel seat 19. A right wheel seat 10, which can rotate with the right rear leg 18 to the inside or outside of the right rear leg 18, is rotatably connected to the lower end of the right rear leg 18. When the left rear leg 17 and right rear leg 18 are extended, the left rear wheel 1a can be rotated to the outside of the left rear leg 17 and the right rear wheel 1b to the outside of the right rear leg 18. In this mode, the tricycle functions as a tricycle, and the child, sitting on the seat 26, can hold the handlebars 13 and propel the tricycle by pedaling the foot pedals 27. When the left rear leg 17 and right rear leg 18 are folded, the left rear wheel 1a can be rotated to the inside of the left rear leg 17 and the right rear wheel 1b to the inside of the right rear leg 18. In this mode, the tricycle functions as a balance bike. In this state, the foot pedals 27 can be detached from the front wheel 15 to train the child's balance. Therefore, this tricycle can switch between different configurations to meet the child's needs.

[0051] like Figure 1 , Figure 5 and Figure 20 As shown, the rear end of the main component 11 is connected to a rotating seat 21, which has a socket 22. The connecting seat 16 has a connecting port 23 that communicates with the socket 22 when it is fitted onto the main component 11. The stroller also includes a control assembly 24, which includes a lower connecting rod 241 that can be inserted into the connecting port 23 and the socket 22 and is detachably connected to the rotating seat 21. A control lever 242 that can extend or retract relative to the lower connecting rod 241 is connected to the lower connecting rod 241. A control rope 25 that can rotate the rotating column 12 when the control assembly 24 rotates the rotating seat 21 is connected to the rotating seat 21. When the connecting seat 16 is connected to the main component 11, the socket 22 communicates with the connecting port 23. The lower connecting rod 241 of the control assembly 24 can be inserted into the socket 22 and connected to the rotating seat 21. Thus, when the control lever 242 is rotated clockwise or counterclockwise, the control rope 25 can be used to pull the rotating column 12 to rotate accordingly, thereby controlling the direction of travel of the stroller. The control lever 242 includes a middle connecting rod 2421 detachably connected to the lower connecting rod 241, and a retractable push rod 2422 is connected to the middle connecting rod 2421. When the stroller is packaged at the factory, the handlebar 3, front fork 14, seat 26, connecting seat 16, and control assembly 24 are all detached from the main body component 11. The lower connecting rod 241 and middle connecting rod 2421 can be separated in one step, as can the middle connecting rod 2421 and push rod 2422 be retracted, and the left and right rear legs 17 and 18 can be folded together and the left and right rear wheels 1a and 1b brought together. Thus, the stroller is disassembled into multiple parts. In particular, the connection seat 16 is detached from the main body component 11, ensuring a small packaging volume and reducing product transportation costs. Consumers can then assemble the stroller themselves upon receipt. In this embodiment, the lower connecting rod 241 and the middle connecting rod 2421 are detachably connected by a locking pin and a locking hole. The push rod 2422 and the middle connecting rod 2421 are telescopic structures. Of course, the push rod 2422 and the middle connecting rod 2421 can also be made into detachable structures.

[0052] like Figure 5 , Figure 6 , Figure 9 , Figure 11 and Figure 12As shown, when the lower connecting rod 241 is inserted into the socket 22, it passes through the connecting port 23, ensuring sufficient insertion depth when the lower connecting rod 241 is connected to the rotating base 21. This ensures smooth operation and prevents wobbling when manipulating the stroller using the lower connecting rod 241. Specifically, the rotating base 21 has a slot 211, and the lower connecting rod 241 has a protrusion 243. When the lower connecting rod 241 is inserted into the socket 22, the protrusion 243 engages with the slot 211, allowing the lower connecting rod 241 to rotate and drive the rotating base 21 to rotate. The connecting port 23 on the connecting seat 16 has a notch 162 on its side wall. The lower connecting rod 241 is provided with an anti-detachment block 244 that can slide relative to it and can be engaged with the notch 162 to prevent the lower connecting rod 241 from falling out of the notch 162. The anti-detachment block 244 is provided with a pressing block 245 that can make the anti-detachment block 244 retract from the notch 162 when pressed. The lower connecting rod 241 is also provided with a seventh return spring 246 that can push the anti-detachment block 244 to slide back to its original position. The notch 162 extends in the circumferential direction, allowing the lower connecting rod 241 to rotate within a set range. When the lower connecting rod 241 is inserted into the socket 22, the anti-detachment block 244 enters the notch 162, which can prevent the operating component 24 from falling out of the socket 22. Furthermore, the notch 162 extends in the circumferential direction, providing movement space for the anti-detachment block 244 to move in the circumferential direction, ensuring that the lower connecting rod 241 can rotate within a certain range, thereby driving the rotation of the rotating seat 21. When it is necessary to disassemble the control component 24, simply press the pressing block 245 to make the anti-disengagement block 244 exit from the notch 162 and pull the control component 24 upward.

[0053] like Figure 6 and Figure 9As shown, the seat portion 26 is provided with a slot 261, into which a backrest 28 is detachably inserted. A closure 29, capable of sliding up and down within the slot 261, is provided. A first elastic element 20, capable of pushing the closure 29 upwards, is provided between the closure 29 and the seat portion 26. When the backrest 28 is inserted into the seat portion 26, the closure 29 is pushed by the lower end of the backrest 28 and moves below the slot 261. When the backrest 28 is detached from the seat portion 26, the first elastic element 20 pushes the closure 29 upwards, closing the slot 261. The backrest 28 is detachably connected to the seat portion 26. During the packaging of the stroller, the backrest 28 is also detached from the seat portion 26 to reduce packaging volume. Furthermore, by providing the closure 29, the slot 261 of the backrest 28 can be closed when the backrest 28 is detached, ensuring that the upper surface of the seat portion 26 remains intact when the backrest 28 is not needed. When installing the backrest 28, the lower end of the backrest 28 pushes the closure 29 downwards, compressing the first elastic element 20. Once the backrest 28 is disengaged from the seat 26, the first elastic element 20 extends and lifts the closure 29. In this embodiment, a latch 262 is provided on the wall of the insertion slot 261, and a latch 281 is slidably provided on the backrest 28. The latch 281 is connected to a button 282, and a second elastic element 283 is provided inside the backrest 28 to push the button 282 to reset. When it is necessary to disassemble the backrest 28, the button 282 is pressed, the second elastic element 283 is compressed, and the latch 281 moves and disengages from the latch 262. Once the latch 281 disengages from the latch 262, the backrest 28 can be pulled upwards. When the backrest 28 is connected to the seat 26, the second elastic element 283 pushes the button 282, keeping the latch 281 engaged with the latch 262.

[0054] like Figure 5 , Figure 8 , Figure 9 and Figure 10As shown, the main component 11 is provided with a mounting groove 111. The seat part 26 includes a connecting column 263 that can pass through the connecting seat 16 and be inserted into the mounting groove 111 and can be raised and lowered within the mounting groove 111. The upper end of the connecting column 263 is connected to a seat 264 that can slide back and forth relative to it and is used for riding. Therefore, the seat 264 can slide back and forth and can also be raised and lowered, making it convenient for the user to adjust the seat part 26 to a suitable position. A first locking structure 31 for locking the height of the connecting column 263 is provided between the connecting column 263 and the main body component 11. An inner groove 112 is provided on the side wall of the mounting groove 111, and the inner groove 112 has a top surface 113. A limiting block 265 is slidably provided inside the connecting column 263, extending into the inner groove 112. When the connecting column 263 is raised to its highest position, the top surface 113 abuts against the limiting block 265. A second insertion hole 114 is provided on the connecting seat 16 and the main body component 11, which is interconnected and allows an external ejector pin to be inserted to push the limiting block 265. A sixth return spring 266 is also provided inside the connecting column 263 to push the limiting block 265 back to its original position. The function of the limiting block 265 is to prevent the seat part 26 from being pulled directly upwards when the height is adjusted due to the unlocking of the first locking structure 31. Specifically, when the seat portion 26 is adjusted to its highest position, the limiting block 265 abuts against the top surface 113 of the inner groove 112, thereby preventing the seat portion 26 from rising further and serving as a limiting and anti-slip function. In this embodiment, if the user needs to replace the seat portion 26, a rod-shaped push pin or similar object can be inserted into the second insertion hole 114 to directly push the limiting block 265. When the limiting block 265 is pushed out of the inner groove 112, the seat portion 26 can be removed upwards.

[0055] like Figure 6 and Figure 9 As shown, the first locking structure 31 includes a plurality of first locking grooves 311 arranged along the height direction of the connecting post 263. A first locking block 312 that can engage or disengage from the first locking grooves 311 is slidably provided in the main body component 11. The main body component 11 is also provided with a first operating block 313 that can drive the first locking block 312 to disengage from the first locking grooves 311 when pressed. The main body component 11 is also provided with a first return spring 314 that can push the first locking block 312 to slide back to its original position. When the first operating block 313 is pressed, the first locking block 312 can be driven to disengage from the first locking grooves 311, at which time the seat part 26 can be moved up and down. When the desired height is reached, the first operating block 313 is released, and the first return spring 314 pushes the first locking block 312 to engage with the corresponding first locking groove 311. The first locking block 312 and the first operating block 313 can be fitted with an inclined surface so that the first locking block 312 can be moved when the first operating block 313 is pressed.

[0056] like Figure 5 , Figure 9 and Figure 13As shown, a second locking structure 32 for locking the connecting seat 16 and the main body component 11 is provided between them. The second locking structure 32 includes a second locking groove 321 provided on the main body component 11, a second locking block 322 that can engage or disengage from the second locking groove 321 is slidably provided in the connecting seat 16, and a second operating block 323 that is exposed on the connecting seat 16 and can drive the second locking block 322 to disengage from the second locking groove 321 during operation. A second return spring 324 that can push the second locking block 322 to slide back to its original position is also provided in the connecting seat 16. By pressing the second operating block 323, the second locking block 322 can be disengaged from the second locking groove 321, thereby unlocking the connecting seat 16 from the main body component 11 and facilitating the disengagement of the connecting seat 16 from the main body component 11. In this embodiment, the connecting seat 16 is provided with a locking hole 161 that can engage with the first operating block 313 when it is connected to the main body component 11. Therefore, the connecting seat 16 and the main body component 11 have multiple locking mechanisms. When it is necessary to disassemble the connecting seat 16, the first operating block 313 and the second operating block 323 need to be pressed at the same time. This can prevent the connecting seat 16 from being mis-locked due to not touching the second operating block 323, and can better ensure safety.

[0057] like Figure 8 As shown, a third locking structure 61 is provided between the seat 264 and the connecting post 263 to lock the front-back position of the seat 264. The third locking structure 61 includes multiple third locking grooves 611 provided on the upper end of the connecting post 263 along the front-back direction. The seat 264 is provided with a third operating block 612 that can be pressed and slid upward. The third operating block 612 is provided with a third locking block 613 that can disengage from or engage with the third locking grooves 611 when it slides. The seat 264 is also provided with a third return spring 614 that can push the third locking block 613 to slide back to its original position. When it is necessary to adjust the front-back position of the seat 264, the third operating block 612 is pressed upward to disengage the third locking block 613 from the third locking grooves 611. At this time, the third return spring 614 is compressed. After the seat 264 is slid back and forth to the appropriate position, the third return spring 614 pushes the third locking block 613 back to its original position and engages with the corresponding third locking groove 611 again.

[0058] like Figure 3 ,as well as Figures 16 to 19As shown, the left rear leg 17 is provided with a left connecting groove 171, and the right rear leg 18 is provided with a right connecting groove 181. When the left rear leg 17 and the right rear leg 18 are folded together, a U-shaped connecting piece 41 is inserted into the left connecting groove 171 and the right connecting groove 181 to make the connection between the left rear leg 17 and the right rear leg 18 more stable in the folded state. The lower side of the right rear leg 18 is provided with a front connecting groove 182 and a rear connecting groove 183 for inserting the connecting piece 41 when it is unfolded with the left rear leg 17, so that the connecting piece 41 can be easily stored when it is not necessary to connect the left rear leg 17 and the right rear leg 18. The connecting piece 41 has connecting holes 42 at both ends. The left connecting groove 171, right connecting groove 181, front connecting groove 182, and rear connecting groove 183 each have locking blocks 44 that engage with the connecting holes 42 and have arc-shaped top surfaces 43. The left rear leg 17 and right rear leg 18 each have third elastic elements 45 that can push the corresponding locking blocks 44 to move and reset. When installing the connecting piece 41, the edge of the connecting piece 41 can push against the arc-shaped top surfaces 43 of the locking blocks 44, causing the locking blocks 44 to move and compress the third elastic elements 45. When the connecting holes 42 and locking blocks 44 are aligned, the third elastic elements 45 extend, causing the locking blocks 44 to engage with the connecting holes 42, preventing the connecting piece 41 from falling off.

[0059] like Figure 5 , Figure 14 , Figure 15 and Figure 21 As shown, the front fork 14 includes a U-shaped fork 141. The upper end of the U-shaped fork 141 is provided with a connecting shaft 142 that can be detachably connected to the rotating column 12. The front wheel 15 is rotatably disposed within the U-shaped fork 141. The connecting shaft 142 is provided with an annular connecting groove 143. A snap-fit ​​piece 144 that can engage or disengage from the connecting groove 143 is slidably disposed within the rotating column 12. A fourth elastic element 145 that can push the snap-fit ​​piece 144 to slide back to its original position is also provided within the rotating column 12. The front fork 14 is inserted into the rotating column 12 via the connecting shaft 142. When the snap-fit ​​piece 144 engages in the connecting groove 143, it prevents the connecting shaft 142 from falling out of the rotating column 12. In order for the rotating column 12 to drive the front fork 14 to rotate, the upper end of the U-shaped fork 141 is provided with multiple locking grooves 146, and the lower end of the rotating column 12 is provided with a locking block 121 that can engage with the locking grooves 146 when the locking piece 144 engages with the connecting groove 143. In this embodiment, the main component 11 includes a main beam 115 and an annular seat 116 fixedly disposed at the front end of the main beam 115 and connected to the rotating column 12. The annular seat 116 is provided with a first insertion hole 117 for an external push pin to be inserted to push the locking piece 144. When the user needs to remove the front fork 14, a rod-shaped push pin or other object is inserted into the first insertion hole 117 to push the locking piece 144 out of the connecting groove 143, at which point the front fork 14 can be pulled out downwards.

[0060] like Figure 1 and Figure 5As shown, a detachable footrest plate 147 is also detachably connected to the front fork 14. When a child's legs are too short to reach the pedals 27 on the front wheel 15, the child's feet can rest on the footrest plate 147. The footrest plate 147 includes an annular sleeve 1471 that can be fitted onto the front fork 14, and a support plate 1472 that can be unfolded or folded relative to the front fork 14 is rotatably connected to the sleeve 147.

[0061] like Figure 14 and Figure 21 As shown, a fourth locking structure 51 is provided between the rotating column 12 and the steering handle 13 for locking the steering handle 13 and the rotating column 12. The fourth locking structure 51 includes a fourth locking hole 511 on the rotating column 12, a fourth locking block 512 at the lower end of the steering handle 13 that can slide laterally and engage or disengage from the fourth locking hole 511, a fourth operating block 513 at the upper end of the steering handle 13 that can be pressed, and a moving block 514 that can be pushed upward by the fourth operating block 513. A pull rope 515 is provided between the moving block 514 and the fourth locking block 512 that can pull the fourth locking block 512 away from the fourth locking hole 511. A fourth return spring 516 at the upper end of the steering handle 13 that can push the moving block 514 back to its original position is provided, and a fifth return spring 517 at the lower end of the steering handle 13 that can push the fourth locking block 512 back to its original position is provided. When it is necessary to remove the steering handle 13, press the fourth operating block 513 to move the moving block 514. The moving block 514 then pulls the fourth locking block 512 away from the fourth locking hole 511 via the pull rope 515, at which point the steering handle 13 can be pulled upwards. The fourth operating block 513 and the moving block 513 can be engaged with an inclined plane so that the lateral movement of the fourth operating block 513 is converted into the longitudinal movement of the moving block 514.

[0062] like Figure 7 and Figure 8As shown, the foot pedal 27 includes a bent shaft 271 and a plate 272 connected to the outer end of the bent shaft 271. The bent shaft 271 has an annular groove 273. The seat 264 also has a connector 267 for inserting the bent shaft 271 after the foot pedal 27 is removed from the front wheel 15. The seat 264 has a fifth operating block 268 that can slide upward when pressed. The fifth operating block 268 has a fifth locking block 269 that can engage with the annular groove 273 on the bent shaft 271 in the connector 267 when it slides downward. The seat 264 also has an eighth return spring 260 that can push the fifth operating block 268 back to its original position. When the children's vehicle is used as a tricycle, the foot pedal 27 is connected to the front wheel 15. When the children's vehicle is used as a balance bike, the foot pedal 27 is not needed. To avoid the foot pedal 27 on the front wheel 15 affecting the child's riding, the foot pedal 27 can be inserted into the connector 267 on the seat 264. Specifically, when the bent shaft 271 is inserted into the connector 267, the fifth locking block 269 is engaged in the annular groove 273 to prevent the foot pedal 27 from falling off the connector 267. When the foot pedal 27 needs to be removed, the fifth operating block 268 is pressed to disengage the fifth locking block 269 from the annular groove 273, at which point the foot pedal 27 can be pulled out.

[0063] like Figure 16 , 17 As shown in Figures 1 and 19, a fifth locking structure 71 is provided between the left hind leg 17 and the right hind leg 18 to lock the unfolded and retracted states of the left and right hind legs 17 and 18. In particular, in the retracted state, the fifth locking structure 71 works together with the connecting piece 41 to make the retracted state of the left and right hind legs 17 and 18 more stable. Specifically, the fifth locking structure 71 includes a left connecting shell 711 on the left rear leg 17 and a right connecting shell 712 on the right rear leg 18. The left connecting shell 711 has multiple left locking grooves 713 along its circumference, and the right connecting shell 712 has multiple right locking grooves 714 along its circumference. A locking gear 715, capable of simultaneously engaging with the left and right locking grooves 713 and 714, is slidably disposed within the space enclosed by the left and right connecting shells 711 and 712. A sixth operating block 716, which, when pressed, disengages the locking gear 715 from the left locking groove 713, is provided on the connecting seat 16. An eighth return spring 717, capable of pushing the locking gear 715 back to its original position, is provided between the right connecting shell 712 and the locking gear 715. When unlocking is required, simply push the sixth operating block 716 to disengage the locking gear 715 from the left locking groove 713, at which point the left rear leg 17 and right rear leg 18 can rotate relative to each other.

[0064] like Figure 17 and Figure 19As shown, the connecting seat 16 is provided with a first metal plate 81, the left rear leg 17 is provided with a second metal plate 82, and the right rear leg 18 is provided with a third metal plate 83. The first metal plate 81, the second metal plate 82, and the third metal plate 83 are stacked and connected to each other, making the stroller structure more stable. The connecting seat 16 is provided with a first sleeve 84 and a second sleeve 85 that are fixedly connected to the first metal plate 81 and protrude upwards. The sixth operating block 716 includes an exposed pressing cap 7161 and a push post 7162 provided on the pressing cap 7161 and passing through the first sleeve 84 and the second sleeve 85. The second metal plate 82 is provided with a first clamping groove 91 and a second clamping groove 92 that allow the first sleeve 84 and the second sleeve 85 to move relative to each other. The first clamping groove 91 has a first starting point arranged in a clockwise direction. The first end 911 and the first end 912 are provided. The second clamping groove 92 has a second starting end 921 and a second end 922 arranged in a clockwise direction. The third metal sheet 83 is provided with a third clamping groove 93 and a fourth clamping groove 94 for relative movement within the first sleeve 84 and the second sleeve 85. The third clamping groove 93 has a third starting end 931 and a third end 932 arranged in a counterclockwise direction. The fourth clamping groove 94 has a fourth starting end 941 and a fourth end 942 arranged in a counterclockwise direction. When the left hind leg 17 and the right hind leg 18 are extended, the first starting end 911 and the fourth starting end 941 clamp the first sleeve 84 and the second starting end 921 and the third starting end 931 clamp the second sleeve 85, so that the left and right hind legs 17 and 18 are locked relative to the connecting seat 16; when the left hind leg 17 and the right hind leg 18 are retracted, the first ending end 912 and the fourth ending end 942 clamp the first sleeve 84 and the second ending end 922 and the third ending end 932 clamp the second sleeve 85, so that the left and right hind legs 17 and 18 are also locked relative to the connecting seat 16.

[0065] Example 2:

[0066] like Figure 26 and Figure 27As shown, the difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 is equipped with a double-lock structure to make the locking of the left rear leg 17 and the right rear leg 18 more stable, avoiding accidental locking caused by the fifth locking structure 71 being accidentally touched. The double lock includes a fixed sleeve 101 fixed on the connecting seat 16, a sixth operating block 716 disposed in the fixed sleeve 101, a toggle button 102 that can move laterally relative to the sixth operating block 716, a blocking rod 103 that can abut against the lower surface of the fixed sleeve 101 to prevent the sixth operating block 716 from being pressed, a clearance hole 104 that can make way for the blocking rod 103 after the toggle button 102 slides, a push post 7162 passing through the fixed sleeve 101 and abutting against the locking gear 715, and a ninth return spring 105 that can push the toggle button 102 to reset between the sixth operating block 716 and the toggle button 102. Therefore, when it is necessary to extend or retract the left hind leg 17 and the right hind leg 18, the toggle button 102 must be pushed to move laterally so that the blocking rod 103 is aligned with the clearance hole 104. Only then can the sixth operating block 716 be pressed to push the locking gear 715. That is, two steps must be performed when unlocking the fifth locking structure 71 to avoid accidentally pressing the sixth operating block 716 and causing a mis-lock, thereby ensuring safety.

[0067] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A children's stroller, characterized in that: The system includes a main component (11), with a rotating column (12) connected to the front end of the main component (11) and detachably connected to a steering handle (13) at the upper end of the rotating column (12). A front fork (14) is detachably connected to the lower end of the rotating column (12), and a front wheel (15) is provided on the front fork (14). A detachable connecting seat (16) is fitted on the main component (11), and a left rear leg (17) and a right rear leg (18) that can be unfolded or folded are rotatably connected to the connecting seat (16). A left wheel seat (19) is rotatably connected to the lower end of the left rear leg (17), and a left rear wheel (1a) that can follow its rotation to the inside or outside of the left rear leg (17). A right wheel seat (10) is rotatably connected to the lower end of the right rear leg (18), and a right rear wheel (1b) that can follow its rotation to the inside or outside of the right rear leg (18). The main body component (11) is connected to a rotating seat (21) at its rear end. The rotating seat (21) is provided with a socket (22). The connecting seat (16) is provided with a connecting port (23) that can communicate with the socket (22) when it is fitted onto the main body component (11). The stroller also includes a control component (24). The control component (24) includes a lower connecting rod (241) that can be inserted into the connecting port (23) and the socket (22) in sequence and is detachably connected to the rotating seat (21). The lower connecting rod (241) is connected with a control lever (242) that can extend or retract relative to it or be detached relative to it. The rotating seat (21) and the rotating column (12) are provided with a control rope (25) that can drive the rotating column (12) to rotate when the control component (24) drives the rotating seat (21) to rotate. The main body component (11) is also detachably connected with a seat part (26). The front wheel (15) is detachably connected with a foot pedal (27).

2. The children's stroller according to claim 1, characterized in that: The control lever (242) includes a middle connecting rod (2421) detachably connected to the lower connecting rod (241), and a push rod (2422) that can extend and retract relative to the middle connecting rod (2421) is connected to the middle connecting rod (2421).

3. The children's stroller according to claim 1, characterized in that: The seat part (26) is provided with a insertion groove (261), and a backrest (28) is detachably inserted into the insertion groove (261). A closure (29) that can slide up and down is provided in the insertion groove (261). A first elastic element (20) that can push the closure (29) upward is provided between the closure (29) and the seat part (26). When the backrest (28) is inserted into the seat part (26), the closure (29) is pushed by the lower end of the backrest (28) and moves to the bottom of the insertion groove (261). When the backrest (28) is separated from the seat part (26), the first elastic element (20) pushes the closure (29) upward and closes the groove of the insertion groove (261).

4. The children's stroller according to claim 3, characterized in that: The insertion slot (261) has a slot (262) on its wall. The backrest (28) has a locking block (281) that can slide relative to it and engage with the slot (262) when it is inserted into the insertion slot (261). The backrest (28) has a button (282) that is connected to the locking block (281) and can disengage the locking block (281) from the slot (262) when pressed. The backrest (28) has a second elastic element (283) that can push the button (282) to reset.

5. The children's stroller according to claim 1, characterized in that: The main component (11) is provided with a mounting groove (111). The seat part (26) includes a connecting column (263) that can pass through the connecting seat (16) and be inserted into the mounting groove (111) and can be raised and lowered within the mounting groove (111). The upper end of the connecting column (263) is connected to a seat (264) that can slide back and forth relative to it and is used for riding. A first locking structure (31) for locking the height position of the connecting column (263) is provided between the connecting column (263) and the main component (11).

6. The children's stroller according to claim 5, characterized in that: A second locking structure (32) for locking the connecting seat (16) and the main body component (11) is provided. The second locking structure (32) includes a second locking groove (321) on the main body component (11). A second locking block (322) that can engage or disengage from the second locking groove (321) is slidably provided in the connecting seat (16). A second operating block (323) that is exposed and can drive the second locking block (322) to disengage from the second locking groove (321) during operation is provided on the connecting seat (16). A second return spring (324) that can push the second locking block (322) to slide back to its original position is also provided in the connecting seat (16). The first locking structure The structure (31) includes a plurality of first locking grooves (311) arranged along the height direction of the connecting column (263). The main body component (11) is slidably provided with a first locking block (312) that can engage or disengage from the first locking groove (311). The main body component (11) is also provided with a first operating block (313) that can drive the first locking block (312) to disengage from the first locking groove (311) when pressed. The main body component (11) is also provided with a first reset spring (314) that can push the first locking block (312) to slide back to its original position. The connecting seat (16) is provided with a locking hole (161) that can engage with the first operating block (313) when it is connected to the main body component (11).

7. The children's stroller according to claim 1, characterized in that: The left hind leg (17) is provided with a left connecting groove (171), and the right hind leg (18) is provided with a right connecting groove (181). When the left hind leg (17) and the right hind leg (18) are closed, a U-shaped connecting piece (41) is inserted into the left connecting groove (171) and the right connecting groove (181). The right hind leg (18) is provided with a front connecting groove (182) and a rear connecting groove (183) on its lower side for inserting the connecting piece (41) when it is unfolded with the left hind leg (17).

8. The children's stroller according to claim 1, characterized in that: The fork (14) includes a U-shaped fork (141), the upper end of which is provided with a connecting shaft (142) that can be detachably connected to the rotating column (12). The front wheel (15) is rotatably disposed in the U-shaped fork (141). The connecting shaft (142) is provided with an annular connecting groove (143). The rotating column (12) is slidably provided with a snap-fit ​​piece (144) that can engage or disengage with the connecting groove (143). The rotating column (12) is also provided with a fourth elastic element that can push the snap-fit ​​piece (144) to slide back to its original position. 145), the main component (11) includes a main beam (115) and an annular seat (116) fixed at the front end of the main beam (115) and connected to the rotating column (12). The annular seat (116) is provided with a first insertion hole (117) for inserting an external pin into the push-pull snap-fit ​​piece (144). The upper end of the U-shaped fork (141) is provided with multiple snap-fit ​​grooves (146). The lower end of the rotating column (12) is provided with a snap-fit ​​block (121) that can engage with the snap-fit ​​groove (146) when the snap-fit ​​piece (144) engages with the connecting groove (143).

9. The children's stroller according to claim 1, characterized in that: The rotating seat (21) is provided with a slot (211), and the lower connecting rod (241) is provided with a protrusion (243) that engages with the slot (211) when it is inserted into the socket (22). The connecting port (23) of the connecting seat (16) is provided with a notch (162). The lower connecting rod (241) is provided with an anti-detachment block (244) that can slide relative to it and can be inserted into the notch (162) to prevent the lower connecting rod (241) from coming out of the notch (162). The anti-detachment block (244) is provided with a pressing block (245) that can make the anti-detachment block (244) exit from the notch (162) when pressed. The lower connecting rod (241) is also provided with a seventh return spring (246) that can push the anti-detachment block (244) to slide back to its original position. The notch (162) extends in the circumferential direction so that the lower connecting rod (241) can rotate within a set range.

10. The children's stroller according to claim 1, characterized in that: The main component (11) is provided with a fixed shaft (118). The left hind leg (17) and the right hind leg (18) can rotate around the fixed shaft (118) and can unfold or fold together. A fifth locking structure (71) is provided between the left hind leg (17) and the right hind leg (18). The fifth locking structure (71) includes a left connecting shell (711) on the left hind leg (17) and a right connecting shell (712) on the right hind leg (18). The left connecting shell (711) is provided with a plurality of left locking grooves (713) along the circumferential direction. The right connecting shell (712) is provided with a plurality of right locking grooves (714) along the circumferential direction. The left connecting shell (711) and the right connecting shell (712) are connected together. Within the space enclosed by 712), a locking gear (715) is slidably provided, capable of engaging simultaneously with the left locking groove (713) and the right locking groove (714). The connecting seat (16) is provided with a sixth operating block (716) that can push the locking gear (715) away from the left locking groove (713) when pressed. Between the right connecting shell (712) and the locking gear (715), an eighth return spring (717) is provided to push the locking gear (715) back to its original position. The connecting seat (16) is provided with a first metal plate (81), the left hind leg (17) is provided with a second metal plate (82), and the right hind leg (18) is provided with a third metal plate (83). The first metal plate (81)... 1) The second metal sheet (82) and the third metal sheet (83) are stacked and connected to each other. The connecting seat (16) is provided with a first sleeve (84) and a second sleeve (85) that are fixedly connected to the first metal sheet (81) and protrude upward. The sixth operating block (716) includes an exposed pressing cap (7161) and a pusher (7162) provided on the pressing cap (7161) and inserted into the first sleeve (84) and the second sleeve (85). The second metal sheet (82) is provided with a first clamping groove (91) and a second clamping groove (92) for relative movement of the first sleeve (84) and the second sleeve (85). The first clamping groove (91) is arranged in a clockwise direction. The first starting end (911) and the first ending end (912) are provided. The second clamping groove (92) has a second starting end (921) and a second ending end (922) arranged in a clockwise direction. The third metal plate (83) is provided with a third clamping groove (93) and a fourth clamping groove (94) for relative movement of the first sleeve (84) and the second sleeve (85). The third clamping groove (93) has a third starting end (931) and a third ending end (932) arranged in a counterclockwise direction. The fourth clamping groove (94) has a fourth starting end (941) and a fourth ending end (942) arranged in a counterclockwise direction. When the left hind leg (17) and the right hind leg (18) are unfolded,The first starting end (911) and the fourth starting end (941) clamp the first sleeve (84), and the second starting end (921) and the third starting end (931) clamp the second sleeve (85). When the left hind leg (17) and the right hind leg (18) retract, the first ending end (912) and the fourth ending end (942) clamp the first sleeve (84), and the second ending end (922) and the third ending end (932) clamp the second sleeve (85).

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