A multifunctional stroller

Abstract

A multifunctional baby stroller includes a pull rod, a frame, and a box shell. The frame is a folding frame, and a seat plate is arranged above the frame. A seat plate fixing part is arranged at the bottom of the seat plate, and a first magnetic part is embedded in the seat plate fixing part. A box shell fixing part is arranged at the top of the box shell, and a second magnetic part is embedded in the box shell fixing part. The first magnetic part and the second magnetic part are attracted to each other and matched, so that the box shell is detachably fixed to the frame. Through the above technical features, the magnetic attraction nesting structure is used to realize the manual second-level disassembly of the box shell, completely avoiding the failure risk of traditional screws / buckles. The self-enhancing locking effect is generated by the body weight of the child when the child is sitting, so that the box shell is prevented from being accidentally disassembled by the child. The frame is provided with an independent storage room, and there is sufficient storage space when the box shell is not installed. After the folding frame is embedded in the box shell groove, it is seamlessly converted into a carry-on luggage box, perfectly adapting to the scenes of traveling with a child by high-speed rail, flight, etc.

Description

Technical Field

[0001] This utility model relates to the field of children's products technology, specifically a multi-functional stroller for children. Background Technology

[0002] With the upgrading of parenting concepts, strollers have become an important tool for children's travel. However, traditional strollers have limited functions, small storage space, and can only serve as a burden when folded up.

[0003] In the existing technology, there are strollers with boxes. However, these products fix the box with screws or clips. Disassembly requires tools and is time-consuming. Frequent disassembly and assembly can easily lead to clip breakage, resulting in a high failure rate. Furthermore, there is no storage space in the frame after the box is removed, and the user experience is poor when the frame is used alone. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a multifunctional stroller for children.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A multi-functional stroller includes a pull rod, a frame, and a case. The pull rod is mounted on the frame and is telescopic, extending or retracting by pressing a button on the handle. The frame is a folding frame, with a connecting part that rotatably connects the front and rear legs. When unfolded, the front and rear legs form a triangular support structure for use as a stroller. When folded, the front and rear legs linearly retract and embed into the matching grooves of the case, transforming it into a suitcase shape. A triangular prism-shaped seat plate is integrally formed with the connecting part on the top of the frame. The bottom of the seat plate integrates a seat plate fixing part, which consists of a first magnetic element and a seat plate slot. The seat plate fixing part is fitted with a downwardly protruding cylindrical first... The first magnetic component is a neodymium iron boron magnet. A corresponding housing fixing part is provided on the top of the housing. The housing fixing part consists of a second magnetic component and a housing hook. The housing fixing part is fitted with a downwardly recessed second magnetic component, which is a magnetic groove made of magnetic conductive material. The second magnetic component is fixed on the housing and can be stably attracted by the first magnetic component. The first and second magnetic components attract each other to form an anti-misalignment nesting structure. A limiting groove is provided above the storage compartment at the bottom of the frame. A positioning boss is provided at the bottom of the housing. By inserting the positioning boss into the limiting groove and attracting the first and second magnetic components to each other, the housing can be detachably fixed to the frame.

[0007] In one embodiment, the seat plate fixing part is provided with a deep groove seat plate slot behind the first magnetic component, and the housing fixing part is provided with a hook-shaped housing hook above the second magnetic component. The housing hook is interference-fitted with the seat plate slot to fix the housing to the frame.

[0008] In one embodiment, the bottom of the frame is provided with a storage compartment, and the top of the storage compartment is provided with at least one cylindrical limiting groove. The bottom of the housing is provided with the same number of cylindrical positioning bosses as the limiting grooves. The positioning bosses are embedded in the limiting grooves to form a tight insertion fit. By first inserting the positioning bosses into the limiting grooves for positioning, and then pushing the housing into the frame, the auxiliary positioning and fixation of the housing and the frame are achieved. When the housing is disassembled and the frame is used alone, storage space can still be provided, which can independently store baby bottles, diapers and other infant products.

[0009] In one embodiment, the bottom of the storage compartment near the box shell has a downward-protruding horizontal support boss, which provides support when the suitcase is in a folded state and can be placed vertically without hand support. The bottom of the storage compartment has an openable and closable storage lid, which can be opened by flipping down and closed by flipping up. The front side wall of the storage compartment has a circular rotating locking piece, and the storage lid has a corresponding storage lid locking groove. Rotating the rotating locking piece will engage it in the storage lid locking groove to close and lock the storage lid, and rotating it in the opposite direction will unlock it.

[0010] In one embodiment, the first magnetic component of the seat plate fixing part is a downwardly protruding neodymium iron boron magnetic column, and the second magnetic component of the shell fixing part is a downwardly recessed magnetic groove made of magnetically conductive material. The nesting and cooperation of the magnetic column and the magnetic groove constitutes an anti-misalignment structure to improve the anti-separation ability. When a child sits on the seat plate, the weight of the child presses down on the seat plate to generate vertical pressure, which greatly increases the pressure on the contact surface between the magnetic column and the magnetic groove, forming a self-reinforcing locking effect. This significantly improves the pull-out resistance during use and completely eliminates the risk of the shell being accidentally pulled out by the child. It is especially suitable for infant and toddler care scenarios.

[0011] In one embodiment, the folding frame includes a front stand, a rear stand, and a connecting part connecting the two. A front wheel is installed at the bottom of the front stand, and a rear wheel is installed at the bottom of the rear stand. The connecting part is rotatably connected to the front stand and the rear stand respectively through a pivot structure. In the unfolded state, the front / rear stands form a V-shaped triangular support structure, which, together with the seat plate, forms a stable stroller frame. During folding, pressing the folding button in the middle of the connecting part drives the unlocking pivot to disengage from the locked position of the guide groove, and the front / rear stands are linearly folded along the axis to a parallel state. When switching functions, the folded frame is precisely embedded into the surface matching groove of the case, and combined with the telescopic rod and wheels, it is seamlessly converted into a standard suitcase with wheels, realizing one-button switching between stroller / carrying modes.

[0012] In one embodiment, at least one end of the connecting part is fixed with a limiting plate. The limiting plate has a guide groove at its center and is fixed to the side of the connecting part with screws. The rotation is controlled by adding the limiting plate. When changing the rotation mode, it is only necessary to replace the limiting plate with one that has a guide groove of a different shape. A folding button is provided in the middle section of the connecting part. The folding button is fixed to an unlocking shaft that runs horizontally through the connecting part. The folding button is supported by an elastic element that keeps the unlocking shaft in a locked position. The elastic element is a spring installed at the bottom of the folding button. The end of the unlocking shaft is engaged in the locked position of the guide groove to form a rotation constraint. Pressing the folding button drives the end of the unlocking shaft to slide along the guide groove to the unlock position, thereby releasing the restriction on the rotation of the connecting part.

[0013] In one embodiment, the seat plate and the connecting part are integrally formed, reducing the number of parts. A pull rope is fixed to the front end of the connecting part, and an anti-detachment fixing end is provided at the bottom of the pull rope. The pull rope passes through the pull rope notch of the connecting part. The position of the pull rope is the same as the seat plate fixing part. When disassembling the shell, pressing the shell and pulling the pull rope can quickly remove the shell with minimal horizontal pulling force.

[0014] In one embodiment, the front stand is equipped with a non-slip rubber foot pad, which is installed directly above the front wheel to provide foot support for children when riding. An L-shaped foot brake plate is hinged to the front stand, and the extended end of the foot brake plate is equipped with a wear-resistant brake pad. The friction surface of the brake pad faces the side of the front tire. When the foot brake plate is pressed, the brake pad forms a friction pair with the tire surface, and the wheel is braked quickly through friction torque. A linear compression spring is provided between the pivot point of the front stand and the front wheel. When the wheel passes over a bumpy road, the spring absorbs the impact kinetic energy through axial deformation, reducing the vibration amplitude transmitted from the frame to the seat.

[0015] In one embodiment, the pull rod is a telescopic pull rod with a multi-section sleeve telescopic structure. The height can be adjusted by locking it with a button. The side of the case facing the frame has a receiving groove that matches the outer contour of the frame, so as to realize the seamless fitting and storage of the folding frame. The outer side of the case has an opening and closing structure, which is a full-circumferential waterproof zipper. Its double-opening slider is equipped with a silicone sealing strip to ensure the rainproof and dustproof performance of the storage cavity. The case has a large-capacity main storage cavity inside.

[0016] The beneficial effects of this utility model are:

[0017] This utility model, by adopting the above-mentioned technical solution, achieves manual disassembly and assembly of the case shell in seconds through a magnetic nesting structure, completely avoiding the failure risk of traditional screws / clasps. When a child rides, the weight of the child presses down to create a self-reinforcing locking effect, preventing the case shell from being accidentally removed by the child. The frame has an independent storage compartment, and there is ample storage space even when the case shell is not installed. The folding frame can be seamlessly converted into a carry-on suitcase after being embedded in the groove of the case shell, perfectly adapting to high-speed rail, flights and other scenarios of traveling with children. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded view of the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of point A.

[0021] Figure 3 for Figure 1 Enlarged view of point B.

[0022] Figure 4 for Figure 1 Enlarged view of point C.

[0023] Figure 5 This is a perspective view of the vehicle frame of this utility model.

[0024] Figure 6 for Figure 5 Enlarged view of point D.

[0025] Figure 7 This is a schematic diagram of the installation of this utility model.

[0026] Figure 8 This is a schematic diagram of the main storage cavity of this utility model.

[0027] Figure 9 This is an open state diagram of the present invention.

[0028] Figure 10 This is a diagram of the folded state of this utility model.

[0029] Figure 11 This is a side view of the present invention in its folded state.

[0030] The numbers in the diagram represent: 1. Pull rod; 2. Frame; 3. Box shell; 4. Seat plate; 5. Seat plate fixing part; 6. Box shell fixing part; 7. First magnetic component; 8. Second magnetic component; 9. Seat plate slot; 10. Box shell hook; 11. Storage compartment; 12. Limiting groove; 13. Positioning boss; 14. Storage cover; 15. Rotary locking piece; 16. Storage cover locking groove; 17. Front stand; 18. Rear stand; 19. Connecting part; 20. Front wheel; 21. Rear wheel; 22. Limiting plate; 23. Guide groove; 24. Folding button; 25. Elastic element; 26. Unlocking shaft; 27. Pull rope; 28. Foot pad; 29. ​​Foot brake plate; 30. Opening and closing structure; 31. Main storage cavity. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Please refer to Embodiment 1 of this utility model. Figure 1-11 :

[0035] A multifunctional stroller includes a pull rod 1, a frame 2, and a housing 3. The frame 2 is a folding frame. A seat plate 4 is provided on the top of the frame 2. A seat plate fixing part 5 is provided at the bottom of the seat plate 4, and a first magnetic element 7 is embedded in the seat plate fixing part 5. A corresponding housing fixing part 6 is provided on the top of the housing 3, and a second magnetic element 8 is embedded in the housing fixing part 6. The first magnetic element 7 and the second magnetic element 8 attract and cooperate with each other, allowing the housing 3 to be detachably fixed to the frame 2.

[0036] By adopting the above technical solution, pressing the button on the handle controls the extension and retraction of the lever 1. The folding frame is rotatably connected to the front leg 17 and the rear leg 18 through the connecting part 19. When unfolded, the front / rear leg 18 forms a V-shaped triangular support structure and is used as a stroller. When folded, pressing the folding button 24 in the middle of the connecting part 19 drives the unlocking column 26 to disengage from the guide groove 23, so that the front / rear leg 18 is linearly retracted along the axis to a parallel state. The retracted frame 2 is precisely embedded into the surface matching groove of the case 3. Combined with the telescopic lever 1 and the wheels, it is seamlessly converted into a carry-on suitcase. The triangular prism-shaped seat plate 4 on the top of the frame 2 is integrally formed with the connecting part 19. The bottom of the seat plate 4 is composed of the first magnetic element 7 and the seat plate slot 9. The plate fixing part 5 has a first magnetic element 7, which is made of a downwardly protruding cylindrical neodymium iron boron magnetic column, embedded in the bottom surface of the plate fixing part 5. The top of the box shell 3 is provided with a box shell fixing part 6, which is composed of a second magnetic element 8 and a box shell hook 10. The box shell fixing part 6 at the top of the box shell 3 is fitted with a second magnetic element 8, which is made of a downwardly recessed magnetic groove of magnetic conductive material. The first magnetic element 7 and the second magnetic element 8 attract each other and form an anti-misalignment nesting structure. The limiting groove 12 at the top of the storage compartment 11 below the frame 2 corresponds to the positioning boss 13 at the bottom of the box shell 3. By inserting the positioning boss 13 into the limiting groove 12, the first magnetic element 7 and the second magnetic element 8 attract each other, so that the box shell 3 can be detachably fixed to the frame 2.

[0037] Preferably, the seat plate fixing part 5 is provided with a seat plate slot 9, and the housing fixing part 6 is provided with a housing hook 10. The housing hook 10 engages with the seat plate slot 9 to fix the housing 3 to the frame 2.

[0038] By adopting the above technical solution, an integrally formed seat plate slot 9 is provided behind the first magnetic component 7 of the seat plate fixing part 5, and an integrally formed hook-shaped box shell hook 10 is provided above the second magnetic component 8 of the box shell fixing part 6. The box shell hook 10 and the seat plate slot 9 are interference-fitted to form a magnetic attraction + mechanical double locking, which enhances the stability of the assembly of the box shell 3 and the frame 2.

[0039] Preferably, the bottom of the frame 2 is provided with a storage compartment 11, and the top of the storage compartment 11 is provided with at least one limiting groove 12. The bottom of the housing 3 is provided with a number of positioning bosses 13 corresponding to the limiting grooves 12. The positioning bosses 13 are embedded in the limiting grooves 12 to form a plug-in fit, thereby realizing the auxiliary positioning and fixation of the housing 3 and the frame 2.

[0040] By adopting the above technical solution, the top of the storage compartment 11 at the bottom of the frame 2 is provided with at least one cylindrical limiting groove 12, and the bottom of the box shell 3 is provided with the same number of cylindrical positioning protrusions 13 as the limiting groove 12. The positioning protrusions 13 are embedded in the limiting groove 12 to form a tight insertion fit. By first inserting the positioning protrusions 13 into the limiting groove 12 for positioning, and then pushing the box shell 3 into the frame 2, the auxiliary positioning and fixation of the box shell 3 and the frame 2 can be achieved. When the frame 2 is used alone, the storage compartment 11 can also provide storage space and can independently store baby bottles, diapers and other infant products.

[0041] Preferably, the storage compartment 11 has an openable storage cover 14 at the bottom, a rotating locking piece 15 on the front side wall of the storage compartment 11, and a corresponding storage cover locking groove 16 on the storage cover 14. Rotating the rotating locking piece 15 allows it to be engaged into the storage cover locking groove 16, thereby closing and locking the storage cover 14, and rotating it in the opposite direction unlocks it.

[0042] By adopting the above technical solution, the horizontal support protrusion at the bottom of the storage compartment 11 allows the suitcase to be placed vertically without hand support. The storage cover 14 at the bottom of the storage compartment 11 is controlled to open and close by a circular rotating locking piece 15 on the front side wall and a storage cover locking groove 16. Rotating the rotating locking piece 15 will engage it in the storage cover locking groove 16, thereby closing and locking the storage cover 14. Rotating in the opposite direction will unlock it.

[0043] Preferably, the first magnetic element 7 of the seat plate fixing part 5 is a downwardly protruding magnetic column, and the second magnetic element 8 of the housing fixing part 6 is a downwardly recessed magnetic groove. The nesting and cooperation of the magnetic column and the magnetic groove constitutes an anti-misalignment structure.

[0044] By adopting the above technical solution, the first magnetic component 7 of the seat plate fixing part 5 is a downwardly protruding neodymium iron boron magnetic column, and the second magnetic component 8 of the shell fixing part 6 is a downwardly recessed magnetic groove made of magnetic conductive material. The nesting and cooperation of the magnetic column and the magnetic groove form an anti-misalignment structure to improve the anti-separation ability. When a child sits, the weight presses down on the seat plate 4 to generate vertical pressure, which greatly increases the pressure on the contact surface of the magnetic column and the magnetic groove, forming a self-reinforcing locking effect, significantly improving the pull-out force during use, and completely eliminating the risk of the shell 3 being accidentally pulled out by the child. It is especially suitable for infant and toddler care scenarios.

[0045] Preferably, the folding frame includes a front stand 17, a rear stand 18, and a connecting part 19 connecting the two. A front wheel 20 is installed at the bottom of the front stand 17, and a rear wheel 21 is installed at the bottom of the rear stand 18. The connecting part 19 is rotatably connected to the front stand 17 and the rear stand 18 respectively through a pivot structure.

[0046] By adopting the above technical solution, the front wheel 20 is installed at the bottom of the front stand 17, and the rear wheel 21 is installed at the bottom of the rear stand 18. The connecting part 19 is rotatably connected to the front stand 17 and the rear stand 18 respectively through a pivot structure. The folding frame can quickly switch between two states: stroller and luggage. In the unfolded state, the front / rear stand 18 forms a V-shaped triangular support structure, which, together with the seat plate 4, forms a stable stroller frame 2. During the folding operation, pressing the folding button 24 in the middle of the connecting part 19 drives the unlocking column 26 to disengage from the locking position of the guide groove 23, and the front / rear stand 18 is linearly folded along the axis to a parallel state. When the function is switched, the folded frame 2 is precisely embedded into the surface matching groove of the case 3. Combined with the telescopic rod 1 and the wheels, it is seamlessly converted into a standard luggage with wheels, realizing one-click switching between stroller / carrying modes.

[0047] Preferably, at least one end of the connecting part 19 is fixed with a limiting plate 22, the limiting plate 22 has a guide groove 23 in the center, and the connecting part 19 has a folding button 24 in the middle section. The folding button 24 is fixed to an unlocking post 26 that passes through the connecting part 19 laterally. The folding button 24 is supported by an elastic element 25 to keep the unlocking post 26 in a locked position. The end of the unlocking post 26 is engaged in the guide groove 23 to form a rotation constraint. Pressing the folding button 24 drives the end of the unlocking post 26 to slide along the guide groove 23 to the unlock position, thereby releasing the restriction on the rotation of the connecting part 19.

[0048] By adopting the above technical solution, at least one end of the connecting part 19 is fixed with a limiting plate 22 by screws. The limiting plate 22 has a guide groove 23 in the center, and has a locking groove and a rotation unlocking groove that cooperate with the unlocking shaft 26. The rotation mode can be changed by simply replacing the limiting plate 22 with a guide groove 23 of a different shape. The connecting part 19 has a folding button 24 in the middle section. The folding button 24 is fixed to the unlocking shaft 26 that passes through the connecting part 19 laterally. The folding button 24 is supported by an elastic element 25 to keep the unlocking shaft 26 in the locked position. The elastic element 25 is a spring installed at the bottom of the folding button 24. The end of the unlocking shaft 26 is locked in the guide groove 23 to form a rotation constraint. Pressing the folding button 24 drives the end of the unlocking shaft 26 to slide along the guide groove 23 to the unlocking position, thereby releasing the restriction on the rotation of the connecting part 19.

[0049] Preferably, the seat plate 4 and the connecting part 19 are integrally formed, and a pull rope 27 is fixed at the front end of the connecting part 19. The pull rope 27 is at the same height as the seat plate fixing part 5.

[0050] By adopting the above technical solution, the seat plate 4 and the connecting part 19 are integrally injection molded into a triangular prism. A pull rope 27 is fixed at the front end of the connecting part 19. The bottom of the pull rope 27 is provided with an anti-detachment fixing end. The pull rope 27 passes through the pull rope 27 notch of the connecting part 19. The position of the pull rope 27 is the same as that of the seat plate fixing part 5. When disassembling the case 3, holding the case 3 and pulling the pull rope 27 can quickly remove the case 3 with minimal horizontal pulling force.

[0051] Preferably, the front stand 17 is provided with a foot pad 28, the front wheel 20 is provided with a foot brake 29, and a shock-absorbing spring is provided between the pivot point of the front stand 17 and the front wheel 20.

[0052] By adopting the above technical solution, the front stand 17 is equipped with an anti-slip rubber foot pad 28, which is installed directly above the front wheel 20 to provide foot support for children when riding. An L-shaped foot brake plate 29 is hinged to it. The extended end of the foot brake plate 29 is equipped with a wear-resistant brake pad. Its friction surface faces the tire side of the front wheel 20. When the foot brake plate 29 is pressed, the brake pad forms a friction pair with the tire surface. The friction torque enables the wheel to brake quickly. A linear compression spring is provided between the pivot point of the front stand 17 and the front wheel 20. When the wheel passes over a bumpy road, the spring absorbs the impact kinetic energy through axial deformation, reducing the vibration amplitude transmitted from the frame 2 to the seat plate 4.

[0053] Preferably, the pull rod 1 is a telescopic pull rod 1, the box shell 3 is provided with a receiving groove on the side facing the frame 2 with a shape matching the outer contour of the frame 2, the outer side of the box shell 3 is provided with an opening and closing structure 30, and the box shell 3 is provided with a main storage cavity 31.

[0054] By adopting the above technical solution, the pull rod 1 adopts a multi-section sleeve telescopic structure, and the height can be adjusted by locking with a button. The side of the case 3 facing the frame 2 is provided with a receiving groove that matches the outer contour of the frame 2, so as to realize the seamless fitting and storage of the folding frame 2. The outer side of the case 3 is provided with an opening and closing structure 30, and the inside of the case 3 is provided with a large-capacity main storage cavity 31. The opening and closing structure 30 is a full-circumferential waterproof zipper, and its double-opening slider is equipped with a silicone sealing strip to ensure the rainproof and dustproof performance of the storage cavity.

[0055] Working principle: Utilizing the mutual attraction of the first magnetic component 7 and the second magnetic component 8, the case 3 is quickly fixed to the frame 2. The first magnetic component 7 protrudes downward and the second magnetic component 8 is recessed downward to form an anti-misalignment nesting structure to improve stability. The seat plate slot 9, case hook 10, positioning boss 13, and limiting groove 12 are set to further improve the stability of the assembly, enabling the case 3 to be quickly disassembled and assembled to the frame 2 by hand. When a child rides, the weight presses down to generate a self-reinforcing locking effect, preventing the case 3 from being accidentally removed by the child. The frame 2 has an independent storage compartment 11, which provides ample storage space even when the case 3 is not installed. When the folding frame 2 is embedded into the groove of the case 3, it can be seamlessly converted into a carry-on suitcase, perfectly adapting to high-speed rail, flights, and other travel scenarios with children.

[0056] When in use, the frame 2 can be folded or unfolded as needed to be used as a luggage box or stroller. When the box 3 is not needed, simply hold the box 3 with one hand and pull the pull rope 27 with the other hand to easily disassemble it.

[0057] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-functional stroller for children, comprising a pull rod (1), a frame (2), and a housing (3), characterized in that: The frame (2) is a folding frame. A seat plate (4) is provided on the top of the frame (2). A seat plate fixing part (5) is provided at the bottom of the seat plate (4). A first magnetic element (7) is embedded in the seat plate fixing part (5). A box shell fixing part (6) is provided on the top of the box shell (3). A second magnetic element (8) is embedded in the box shell fixing part (6). The first magnetic element (7) and the second magnetic element (8) attract and cooperate with each other, so that the box shell (3) can be detachably fixed to the frame (2).

2. The multifunctional stroller for children according to claim 1, characterized in that: The seat plate fixing part (5) is provided with a seat plate slot (9), and the box shell fixing part (6) is provided with a box shell hook (10). The box shell hook (10) engages with the seat plate slot (9) to fix the box shell (3) to the frame (2).

3. The multifunctional stroller for children according to claim 1, characterized in that: The bottom of the frame (2) is provided with a storage compartment (11), and the top of the storage compartment (11) is provided with at least one limiting groove (12). The bottom of the box shell (3) is provided with the same number of positioning bosses (13) as the limiting grooves (12). The positioning bosses (13) are embedded in the limiting grooves (12) to form a plug-in fit, thereby realizing the auxiliary positioning and fixation of the box shell (3) and the frame (2).

4. A multi-functional stroller for children according to claim 3, characterized in that: The storage compartment (11) has an openable storage cover (14) at the bottom. The front side wall of the storage compartment (11) has a rotating locking piece (15). The storage cover (14) has a corresponding storage cover locking groove (16). Rotating the rotating locking piece (15) will cause it to engage with the storage cover locking groove (16), thereby closing and locking the storage cover (14). Rotating in the opposite direction will unlock it.

5. A multi-functional stroller for children according to claim 1, characterized in that: The first magnetic component (7) of the seat plate fixing part (5) is a downwardly protruding magnetic column, and the second magnetic component (8) of the box shell fixing part (6) is a downwardly recessed magnetic groove. The nesting and cooperation of the magnetic column and the magnetic groove constitutes an anti-misalignment structure.

6. A multi-functional stroller for children according to claim 1, characterized in that: The folding frame includes a front stand (17), a rear stand (18), and a connecting part (19) connecting the two. The front stand (17) has a front wheel (20) installed at the bottom, and the rear stand (18) has a rear wheel (21) installed at the bottom. The connecting part (19) is rotatably connected to the front stand (17) and the rear stand (18) respectively through a pivot structure.

7. A multi-functional stroller for children according to claim 6, characterized in that: At least one end of the connecting part (19) is fixed with a limiting plate (22). The limiting plate (22) has a guide groove (23) in the center. The connecting part (19) has a folding button (24) in the middle section. The folding button (24) is fixed to an unlocking shaft (26) that passes through the connecting part (19) laterally. The folding button (24) is supported by an elastic element (25) to keep the unlocking shaft (26) in the locked position. The end of the unlocking shaft (26) is inserted into the guide groove (23) to form a rotation constraint. Pressing the folding button (24) drives the end of the unlocking shaft (26) to slide along the guide groove (23) to the unlock position, thereby releasing the restriction on the rotation of the connecting part (19).

8. A multi-functional stroller for children according to claim 6, characterized in that: The seat plate (4) and the connecting part (19) are integrally formed. A pull rope (27) is fixed at the front end of the connecting part (19). The pull rope (27) is at the same height as the seat plate fixing part (5).

9. A multi-functional stroller for children according to claim 6, characterized in that: The front stand (17) is provided with a foot pad (28), the front wheel (20) is provided with a foot brake plate (29), and a shock-absorbing spring is provided between the pivot point of the front stand (17) and the front wheel (20).

10. A multifunctional stroller for children according to claim 1, characterized in that: The pull rod (1) is a telescopic pull rod (1). The box shell (3) has a receiving groove with a shape matching the outer contour of the frame (2) on the side facing the frame (2). The box shell (3) has an opening and closing structure (30) on the outside. The box shell (3) has a main storage cavity (31) inside.

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