A side opening door stroller

Abstract

A side opening door child stroller, comprising a stroller body; a fixed assembly provided at least on one side of the stroller body; a rotating assembly detachably or rotatably connected to the fixed assembly, wherein the rotating assembly has two states: in a first state, the rotating assembly is accommodated in the stroller body and forms an opening on one side of the stroller body for the child to enter and exit; in a second state, the rotating assembly cooperates with the fixed assembly to shield the opening and provide support force for the stroller body. The embodiment of the utility model forms a lateral opening in the accommodation state through the rotating assembly, which is convenient for the child to enter and exit, and cooperates with the fixed assembly to provide support force in the unfolded state, solves the contradiction between insufficient lateral support and operational convenience of the existing side opening stroller, and has the advantages of improving structural stability and simplifying the operation process.

Description

Technical Field

[0001] This utility model relates to the field of children's stroller technology, specifically to a side-opening children's stroller. Background Technology

[0002] The current market offers a variety of stroller styles, which can be broadly categorized by opening mechanism into top-hook, front-folding, and side-opening types. To balance load-bearing strength and lightweight design, foldable strollers generally utilize aluminum alloy tubular frames, with the chassis and uprights forming the basic load-bearing channels.

[0003] However, most existing side-opening strollers use a fold-over design or a completely detachable side rail, with one end connected to the frame via plastic clips or pins, forming a side entrance when opened. This design is simple, but the side rail doesn't contribute to load-bearing capacity. In the event of a lateral collision or going up or down steps, the chassis and front and rear pillars must be reinforced, often requiring thicker main frame tubing or the addition of steel cables, increasing weight and cost. Another type of stroller designs the side wall as a load-bearing support, forming a triangle with the base and top beam to enhance lateral rigidity. However, because the side is closed, the door cannot be opened, forcing children to be carried in from the top or front. This is difficult for parents to operate in confined spaces and increases the risk of bumping into the canopy. In conclusion, how to achieve a safe, convenient, and foldable side-opening door structure while maintaining lateral load-bearing rigidity remains a critical technical challenge that the industry urgently needs to address. Utility Model Content

[0004] The purpose of this utility model is to provide a side-opening child stroller, which has the advantages of improving lateral support, optimizing the convenience of children getting in and out, and maintaining the lightweight of the stroller body.

[0005] The technical solution is as follows: A side-opening stroller includes: The cart itself; A fixing component is provided at least on one side of the trolley body; A rotating component that is detachably or rotatably connected to the fixed component, wherein the rotating component has two states: In the first state, the rotating component is housed in the stroller body and forms an opening on one side of the stroller body for a child to enter and exit; In the second state, the rotating component cooperates with the fixing component to block the opening and provide support for the trolley body.

[0006] Furthermore, the rotating component rotates outward relative to the fixed component from the outside of the trolley body.

[0007] Furthermore, the rotating assembly includes a first link and a connecting assembly, with one end of the two first links rotatably connected, and two connecting assemblies, with the other ends of the two first links respectively detachably or rotatably connected to the fixed assembly via the connecting assembly.

[0008] Furthermore, the fixing assembly includes a second link, a third link, and two fourth links. One end of the second link is rotatably connected to one end of the third link. The second link and the third link are provided with through holes. One of the fourth links is hinged to the second link through the through hole, and the other fourth link is hinged to the third link through the through hole.

[0009] Furthermore, the connecting assembly includes a pivot and a pivot seat. The pivot has a first groove, and the first connecting rod portion is disposed in the first groove. The pivot seat has a second groove, and the fourth connecting rod portion is disposed in the second groove.

[0010] Furthermore, a connecting portion is provided between the pivot and the pivot seat, the connecting portion including a fixed end connected to the pivot. and a first hinge end rotatably connected to the pivot, the first hinge end being used to allow the pivot to rotate relative to the pivot within a predetermined angle range, wherein: When the rotating assembly is in the second state, the first link and its corresponding fourth link are arranged side by side along the side of the trolley body to form the opening.

[0011] Furthermore, the pivot is also provided with a first connecting hole, through which the pivot is connected to the first connecting rod. The pivot seat is also provided with a second connecting hole, which is disposed opposite to the through hole. The pivot is hinged to the fourth connecting rod through the second connecting hole.

[0012] Furthermore, the pivot seat is also provided with a locking groove, and the pivot shaft is also provided with a locking part. The locking part includes a sliding groove, an operating end for external pressing or pulling, and a slide rod extending axially from the operating end and passing through the sliding groove. The locking part has two states: When in the unlocked state, the slide bar moves along the sliding groove toward the operating end, causing the slide bar to disengage from the locking groove; When in the locked state, the slide bar moves away from the operating end along the sliding groove, so that at least part of the slide bar is embedded in the locking groove.

[0013] Furthermore, a positioning end is provided on the side of the slide rod away from the operating end, and an inclined surface is formed on the periphery of the positioning end for cooperating with the locking groove. The inclined surface cooperates with the edge of the locking groove so that when the rotating assembly is reset from the unlocked state to the locked state, it guides the slide rod into the locking groove.

[0014] Furthermore, the snap-fit ​​part also includes a fixing member. A limiting groove is formed on the outer periphery of the slide rod along the axial direction. Fixing holes corresponding to the limiting groove are respectively formed on the two side walls opposite to the sliding groove. The fixing member passes through the fixing hole and partially extends into the limiting groove to limit the axial movement stroke of the slide rod.

[0015] This utility model embodiment uses a rotating component to create a side opening in the folded state to facilitate children's entry and exit, and in the unfolded state, it works in conjunction with the fixed component to provide support. This solves the problem of insufficient lateral support and operational convenience in existing side-opening strollers, and has the advantages of improving structural stability and simplifying the operation process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present invention in its second state; Figure 2 This is a structural schematic diagram of the present invention in its first state. Figure 3 This is a schematic diagram of the structure of the fixing component and the rotating component according to an embodiment of the present invention; Figure 4 This is a structural diagram of the second and third links; Figure 5 This is an exploded view of the connecting component according to an embodiment of the present invention; Figure 6 This is a cross-sectional view of the connecting component according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the working state of the connecting component according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the structure of part of the trolley body in an embodiment of this utility model; Figure 9 This is a rotating connection component according to an embodiment of the present utility model.

[0018] Figure label: 1. Trolley body; 11. Connecting seat; 12. Insertion piece; 121. Protrusion; 122. Second hinge end; 2. Fixed component; 21. Second link; 22. Third link; 23. Through hole; 24. Fourth link; 3. Rotating component; 31. First link; 32. Connecting assembly; 321. First groove; 322. First connecting hole; 323. Sliding groove; 324. Operating end; 325, slide bar; 3251, positioning end; 3252, inclined surface; 3253, limiting groove; 326. Fixing hole; 327. Fixing element; 328. Second groove; 329. Second connecting hole; 330. Locking groove; 331, Connecting part; 3311, Fixed end; 3312, First hinged end; 4. Opening. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. In the current technology of strollers, there has long been a contradiction between lateral support and convenient door opening. Traditional side-opening strollers use a design that folds over as a whole or completely removes the side rails. The side rails only serve as a barrier structure and cannot participate in load-bearing, resulting in insufficient lateral rigidity of the vehicle. This requires additional reinforcement of the main frame tubing or the addition of steel cables, increasing weight and cost. Other strollers with lateral support functions can form a stable triangular structure, but the sides are completely closed. Parents need to lift the child in from the top or front, which is difficult to operate in a confined space and increases the risk of collision with the stroller.

[0022] To address these issues, researchers discovered that the separation of the lateral opening structure from its load-bearing function was the root cause of the problem. Analysis of the trolley frame's stress path revealed that the lack of lateral support resulted in the chassis and columns bearing additional loads. Therefore, they proposed designing the side rails as convertible structural components, forming an entrance when open and providing stable support to the frame when closed. Further research revealed that a rotating connection mechanism allows the side rails to switch between folded and unfolded states, simultaneously satisfying both the opening requirements and the force transfer requirements.

[0023] Therefore, refer to Figures 1-9 This application proposes a side-opening child stroller including a stroller body 1, a fixing component 2, and a rotating component 3. The fixing component 2 is located at least on one side of the stroller body 1, and the rotating component 3 is detachably or rotatably connected to the fixing component 2. The rotating component 3 has two states: in the first state, it is housed in the stroller body 1 and forms an opening 4 for the child to enter and exit; in the second state, it cooperates with the fixing component 2 to cover the opening 4 and provide support for the stroller body 1.

[0024] The stroller body 1 refers to the main frame structure that carries the child, which can be formed by welding or riveting aluminum alloy tubing, and is used to construct the seating space and connect various functional components. The fixed component 2 refers to the connecting brackets located on one or both sides of the stroller body, which can be a combination of metal linkages and hinges, and is used to provide the mounting base and movement trajectory constraints for the rotating component 3. The rotating component 3 refers to the repositionable side rail structure, which releases lateral space when folded and forms a closed enclosure when unfolded.

[0025] In practical implementation, when a child needs to be carried in, the rotating component 3 can rotate outward to the storage position, creating an unobstructed opening 4 on the side, allowing parents to move the child into the stroller. After the child is seated, the rotating component 3 rotates in the opposite direction to the closed position, its end mechanically interlocking with the fixed component 2. At this point, the rods of the rotating component 3 and the frame together form a quadrilateral support structure, transferring lateral loads to the chassis and top beam. This structure maintains the function of the lateral opening 4 while making the rotating component 3 an integral part of the frame's load-bearing system, avoiding the need to separately reinforce the main frame.

[0026] Compared to existing technologies, traditional side rails merely function as movable barriers, and their opening and closing process does not alter the mechanical transmission path of the vehicle frame. This solution, however, makes the rotating component 3 a key component for lateral support of the frame when closed. In existing technologies, the side rail completely detaches from the frame when open, resulting in a sharp drop in lateral stiffness. This solution, through the continuous connection between the fixed component 2 and the rotating component 3, ensures effective load transmission in both states. Existing side-opening structures require additional locking devices to prevent accidental opening, while the mechanical interlocking structure of this solution automatically locks when providing support.

[0027] Through the above technical solution, this application, while maintaining the convenience of the side opening 4, integrates the rotating component 3 into the frame load-bearing system, avoiding the need for thicker tubing or auxiliary reinforcement structures due to insufficient lateral stiffness. The cooperative design of the rotating component 3 and the fixed component 2 enables one-handed opening and closing while ensuring the vehicle's lateral impact resistance when closed. This structure maintains a compact form when folded and provides stable support when unfolded, solving the problems of single function and redundant structure in traditional solutions.

[0028] It should be noted that, to improve the adaptability of the structure and the flexibility of user operation, the rotating component 3 in this application not only supports rotation around the fixed component 2, but can also be completely disassembled through structural design. In a specific embodiment, the rotating component 3 is connected to the fixed component 2 via a pivot. The pivot can adopt a screw connection, snap-fit, or pin structure, allowing the rotating component 3 to be easily and quickly released and removed from the fixed component 2 when not in operation. For example, when the trolley needs to be stored for a long time, placed in a small space, or when the side rails need to be cleaned or replaced separately, the user can manually disassemble the rotating component 3 to further compress the trolley's external dimensions or reduce its weight. The disassembly process does not require special tools; it can be achieved simply by loosening the quick-release parts or releasing the locking mechanism.

[0029] In one embodiment, this application further proposes that the rotating component 3 rotates outward relative to the fixed component 2 towards the outside of the trolley body 1. The rotation axis of the rotating component 3 can be located at the outer edge of the fixed component 2, allowing the rotating component 3 to extend outward when deployed. The fixed component 2 can be implemented using a frame structure formed by multi-link hinges, with its connection point to the rotating component 3 located at the side edge of the trolley body 1, forming a stable force transmission path.

[0030] In practical implementation, when the rotating component 3 rotates outward around the hinge point of the fixed component 2, an angle is formed between the rotating component 3 and the fixed component 2. In the closed state, this angle disappears and forms a planar support surface. On the side of the stroller body 1, the opening 4 formed after the rotating component 3 rotates outward is larger than the opening when it rotates inward, facilitating children's entry and exit. In the closed state, the outer rotation trajectory of the rotating component 3 ensures that it fully contacts the contact surface of the fixed component 2, forming a lateral support structure that shares the lateral load of the stroller body 1 under bumpy road conditions.

[0031] Compared to existing technologies, current side-opening trolleys typically employ a design where the rotating component 3 is folded inwards or completely disassembled. This results in the rotating component 3 failing to form an effective support surface with the frame when closed, with the lateral load entirely borne by the chassis and uprights. In contrast, this design, through an outward rotation trajectory, allows the rotating component 3 to form a continuous support surface with the fixed component 2 when closed, distributing the lateral force to the connection point between the rotating component 3 and the fixed component 2, thus reducing the load requirements of the main frame.

[0032] Through the above technical solution, this application solves the problem that the side rails of existing side-opening trolleys cannot participate in load-bearing, resulting in redundancy in the main frame structure. When the rotating component 3 is closed, it forms a lateral support surface together with the fixed component 2, so that the trolley body 1 can maintain the function of the lateral opening 4 without increasing the lateral stiffness by thickening the main frame tubes or adding steel cables, thus achieving a balance between lightweight and structural strength.

[0033] In one embodiment, reference is made to... Figure 3 This application further proposes that the rotating component 3 includes a first connecting rod 31 and a connecting component 32, with one end of the two first connecting rods 31 rotatably connected, and two connecting components 32, with the other ends of the two first connecting rods 31 respectively detachably or rotatably connected to the fixed component 2 through the connecting components 32.

[0034] The first link 31 refers to a rod-shaped component with a rotating connection end, which can be made of aluminum alloy tubing or carbon fiber composite material. The rotating connection forms a foldable structure, which is convenient for reducing the volume when storing.

[0035] The connecting component 32 refers to the component used to achieve a detachable or rotatable connection. Specifically, it can be implemented by a structure that combines a pivot and a pivot seat, and can be fixed and released by snap-fit ​​or sliding to ensure that the rotating component 3 remains stable in the unfolded state.

[0036] Specifically, one end of each of the two first connecting rods 31 is connected to the other via a pivot, and the other end is connected to the fixed component 2 via a connecting assembly 32. When a lateral opening 4 needs to be formed, the first connecting rods 31 rotate outward around the rotation center of the connecting assembly 32, causing the two first connecting rods 31 to unfold and retract into one side of the stroller body 1, thus forming the opening 4 for children to enter and exit. When the opening 4 needs to be closed, the first connecting rods 31 rotate in the opposite direction to a position that engages with the fixed component 2. The connecting assembly 32 secures the first connecting rods 31 via a snap-fit ​​or locking structure, allowing the rotating assembly 3 to provide lateral support to the stroller body 1.

[0037] Compared to existing technologies, current side-opening trolleys typically employ a folding or complete disassembly of the side rails, which are only connected by clips or pins and cannot contribute to load-bearing. This solution, through the cooperation of the first link 31 and the connecting component 32, enables the rotating component 3 and the fixed component 2 to form a stable support structure in the closed state, distributing lateral forces and avoiding excessive reliance on thickened pipes or additional steel cables for the main frame.

[0038] Through the above technical solution, this application maintains the convenience of the side opening 4, while enhancing the lateral load-bearing capacity by using the linkage structure of the rotating component 3 and the fixed component 2. This solves the problem that the side rails of traditional side-opening trolleys cannot bear the weight, resulting in a bulky main frame. At the same time, the folding and storage function is realized through the detachable or rotating connection design, taking into account both lightweight and structural strength.

[0039] In one embodiment, reference is made to... Figures 3-4 The fixing assembly 2 includes a second link 21, a third link 22 and two fourth links 24. One end of the second link 21 is rotatably connected to one end of the third link 22. The second link 21 and the third link 22 are provided with through holes 23. One fourth link 24 is hinged to the second link 21 through the through hole 23, and the other fourth link 24 is hinged to the third link 22 through the through hole 23.

[0040] The second link 21 and the third link 22 are rigid members that form the basic support of the fixed component 2. They can be made of aluminum alloy tubing and are connected by rotation to form a foldable frame structure, providing stable lateral support in the unfolded state. The through hole 23 is a hole structure that passes through the second link 21 and the third link 22. It can be formed by stamping or drilling. The hinged connection between the through hole 23 and the fourth link 24 allows the fourth link 24 to rotate around the axis of the through hole 23, thus enabling the folding and unfolding of the fixed component 2. The fourth link 24 is an auxiliary support member connected to the second link 21 and the third link 22. It can be made of steel hinge structure and engages with the through hole 23 through a hinge, used to transmit lateral loads in the unfolded state and reduce the overall volume in the folded state.

[0041] Specifically, the second link 21 and the third link 22 are rotatably connected to form a foldable V-shaped basic frame, and the two fourth links 24 are hinged to the through holes 23 of the second link 21 and the third link 22, respectively. When the trolley is in the unfolded state, the second link 21 and the third link 22 are distributed at an angle, and the fourth links 24 extend outward and connect to the rotating component 3, forming a stable triangular support structure to enhance the lateral stiffness of the trolley; when folding is required, the second link 21 and the third link 22 can rotate inward around the connection point, driving the fourth link 24 to retract synchronously towards the trolley body 1, reducing the space occupied.

[0042] This embodiment achieves the function of 4 side openings while using a multi-link hinge structure to form stable lateral support, solving the problem that existing trolley side rails cannot simultaneously bear weight and fold. Furthermore, during the folding process, each link can be retracted synchronously, significantly improving the ease of operation.

[0043] In one embodiment, reference is made to... Figures 5-6 This application further proposes that the connecting assembly 32 includes a pivot and a pivot seat, the pivot is provided with a first groove 321, a first connecting rod 31 is partially disposed in the first groove 321, the pivot seat is provided with a second groove 328, and a fourth connecting rod 24 is partially disposed in the second groove 328.

[0044] The pivot refers to the shaft-like component used to connect the rotating assembly 3 and the fixed assembly 2. Specifically, it can be implemented using a metal shaft with grooves. The opening 4 of the first groove 321 is parallel to the pivot axis and is used to accommodate the end of the first connecting rod 31. The pivot base refers to the mounting base that mates with the fixed assembly 2. Specifically, it can be implemented using a metal block with grooves. The opening 4 of the second groove 328 is perpendicular to the pivot base axis and is used to accommodate the end of the fourth connecting rod 24. The mating structure of the first groove 321 and the second groove 328 can form multi-directional restraint, constraining the displacement freedom of the connecting rods when the rotating assembly 3 is unfolded, and maintaining compact folding when stored.

[0045] Specifically, the pivot wraps around the end of the first connecting rod 31 through the first groove 321, providing stable axial support for the rotating assembly 3 in the unfolded state. The pivot seat wraps around the end of the fourth connecting rod 24 through the second groove 328, maintaining lateral constraint for the fixing assembly 2 in the folded state. When the rotating assembly 3 is in the first state, the staggered arrangement of the first groove 321 and the second groove 328 allows the first connecting rod 31 and the fourth connecting rod 24 to separate, forming a lateral opening 4. When the rotating assembly 3 is in the second state, the axes of the first groove 321 and the second groove 328 coincide, forming a coplanar support structure for the first connecting rod 31 and the fourth connecting rod 24.

[0046] This embodiment solves the problem of insufficient load-bearing capacity of the side rail connection structure of the side-opening trolley. While maintaining the function of the side opening 4, it makes the rotating component 3 and the fixed component 2 form a rigid connection, which improves the trolley's lateral impact resistance and does not affect the convenience of folding and storage.

[0047] In one embodiment, reference is made to... Figures 5-6 This application further proposes that a connecting part 331 is provided between the pivot and the pivot seat. The connecting part 331 includes a fixed end 3311 connected to the pivot and a first hinge end 3312 rotatably connected to the pivot seat. The first hinge end 3312 is used to allow the pivot to rotate relative to the pivot seat within a predetermined angle range. When the rotating assembly 3 is in the second state, the first connecting rod 31 and its corresponding fourth connecting rod 24 are arranged side by side along the trolley body 1 to form the opening 4.

[0048] The connecting part 331 is a connecting structure that provides guiding rotation during the unfolding of the rotating assembly 3, and can be integrally formed from a metal connecting rod or a reinforced plastic component. The fixed end 3311 can be fixed to the pivot end by screws or riveting to ensure that it does not undergo axial or rotational displacement under load; the first hinge end 3312 is connected to the pivot seat by a hinge pin to achieve controllable rotation relative to the pivot seat. This connection method can achieve precise positioning at a preset angle and form a stable structural stop during the rotation of the rotating assembly 3 from the retracted state to the unfolded state.

[0049] Specifically, during the rotation of the rotating assembly 3 from the first state to the second state, the connecting part 331 guides the pivot to rotate in the plane, thereby causing the first connecting rod 31 to unfold downwards along a predetermined trajectory and gradually approach its corresponding fourth connecting rod 24. When the rotating assembly 3 reaches the fully unfolded position, the first connecting rod 31 and the fourth connecting rod 24 are arranged parallel to each other in the lateral direction of the trolley body 1, forming a double-rod structure arranged side by side in the front-rear direction, achieving structural closure and force coordination. Since the connecting part 331 constitutes an intermediate rotation unit between the pivot and the pivot seat, it can effectively avoid trajectory deviation or interference problems during the unfolding process of the rotating assembly 3, improving the smoothness of the unfolding action and the accuracy of structural positioning.

[0050] In this embodiment, the design of the connecting part 331 optimizes the force path of the rotating component 3 after it is unfolded. Each first link 31 can form parallel support with its corresponding fourth link 24, further enhancing the overall lateral compression and torsional resistance of the side rail. At the same time, without increasing the size or weight of the trolley, this design makes the rotating component 3 an integral part of the frame structure in the unfolded state, effectively combining the functions of the opening 4 and the support function, avoiding the problem of the structure becoming loose or unable to bear weight after the door is opened in the prior art.

[0051] In one embodiment, reference is made to... Figures 5-6 This application further proposes that the pivot is provided with a first connecting hole 322, the pivot is connected to the first connecting rod 31 through the first connecting hole 322, and the pivot seat is provided with a second connecting hole 329, the second connecting hole 329 is arranged opposite to the through hole 23, and the pivot is hinged to the fourth connecting rod 24 through the second connecting hole 329.

[0052] The first connecting hole 322 refers to a through hole structure set on the pivot, which can be achieved by drilling a hole in the surface of a metal shaft, and is used to form a detachable or rotatable shaft hole connection with the end of the first connecting rod 31. The second connecting hole 329 refers to a positioning hole set on the pivot seat, which can be formed by injection molding or stamping. Its axis coincides with the axis of the through hole 23 of the fourth connecting rod 24, so that the pivot can pass through both the second connecting hole 329 and the through hole 23 to achieve hinge connection. The through hole 23 refers to a through hole set at the end of the fourth connecting rod 24, which can be formed by secondary processing after cutting the tube, and is used to accommodate the pivot and limit its rotation trajectory.

[0053] Specifically, the pivot is fixedly connected to the first connecting rod 31 through the first connecting hole 322, allowing the rotational motion of the first connecting rod 31 to be transmitted to the pivot. After the second connecting hole 329 on the pivot seat is aligned with the through hole 23 of the fourth connecting rod 24, the pivot passes through the second connecting hole 329 and the through hole 23 in sequence, forming a hinge structure between the pivot and the fourth connecting rod 24. When the rotating assembly 3 is in the second state, the hinge point between the pivot and the fourth connecting rod 24 bears the lateral load of the trolley, while the connection structure between the first connecting rod 31 and the pivot transmits the load to the fixed assembly 2, forming a stable triangular support. When the rotating assembly 3 switches to the first state, the pivot moves axially along the through hole 23, unlocking the hinge point between the first connecting rod 31 and the fourth connecting rod 24, thus realizing the folding and storage of the rotating assembly 3.

[0054] This embodiment achieves a stable hinge connection between the rotating component 3 and the fixed component 2, maintaining the lateral stiffness of the trolley when the side rail is opened and avoiding local stress concentration caused by a single-point connection. Simultaneously, the mating structure between the pivot and the through hole 23 automatically unlocks during folding, simplifying the operation and improving the ease of use of the side-opening door mechanism.

[0055] In one embodiment, reference is made to... Figures 5-6This application further proposes that the pivot seat is provided with a locking groove 330 and the pivot is provided with a locking part. The locking part includes a sliding groove 323, an operating end 324 for external pressing or lifting, and a slide rod 325 extending axially from the operating end 324 and passing through the sliding groove 323. The locking part has two states: when it is in the unlocked state, the slide rod 325 moves along the sliding groove 323 toward the operating end 324, so that the slide rod 325 disengages from the locking groove 330; when it is in the locked state, the slide rod 325 moves along the sliding groove 323 away from the operating end 324, so that at least part of the slide rod 325 is embedded in the locking groove 330.

[0056] The locking groove 330 refers to a recessed structure on the pivot, which can be achieved by stamping or milling. It accommodates the end of the slide bar 325 in the locked state, limiting its axial displacement. The locking part is a linkage mechanism composed of the operating end 324, the slide bar 325, and the sliding groove 323. It can be achieved by a metal stamping part combined with a spring. The sliding bar 325 moves within the sliding groove 323 through the lifting or pressing action of the operating end 324, switching between locked and unlocked states. The sliding groove 323 is a guide groove on the pivot, which can be achieved by wire cutting or milling. It constrains the movement path of the slide bar 325, ensuring it slides in a predetermined direction. The operating end 324 is a protrusion 121 or recessed structure for manual operation by the user. It can be achieved by injection molding or metal stamping, facilitating the application of lifting or pressing forces. The unlocked state refers to the state where the slide bar 325 is completely disengaged from the locking groove 330. At this time, the rotating component 3 can rotate freely around the pivot. Specifically, quick unlocking can be achieved with the assistance of a spring reset mechanism. The locked state refers to the state where the slide bar 325 is partially embedded in the locking groove 330. At this time, the rotating component 3 and the fixed component 2 form a rigid connection. Specifically, self-locking can be achieved by the cooperation between the inclined surface 3252 at the end of the slide bar 325 and the edge of the locking groove 330.

[0057] Specifically, refer to Figure 7 When unlocking is required, the operating end 324 is pulled or pressed, causing the slide bar 325 to move along the sliding groove 323 towards the operating end 324 until the slide bar 325 is completely disengaged from the locking groove 330. At this time, the rotating assembly 3 can rotate around the pivot to unfold or fold. When locking is required, the slide bar 325 moves along the sliding groove 323 away from the operating end 324 under the action of spring or gravity. The end of the slide bar 325 is embedded in the locking groove 330, and a self-locking force is generated by the contact between the inclined surface 3252 and the edge of the locking groove 330, preventing the rotating assembly 3 from rotating accidentally.

[0058] This embodiment enables quick locking and unlocking between the rotating component 3 and the fixed component 2, simplifying the operation while ensuring lateral support strength. For example, parents can open and close the side rails with one hand, and when the stroller is subjected to lateral impact, the rigid contact between the slide bar 325 and the locking groove 330 can effectively distribute the load and prevent deformation at the connection due to stress concentration.

[0059] This application further proposes that the slide bar 325 is provided with a positioning end 3251 on the side away from the operating end 324. The periphery of the positioning end 3251 is formed with an inclined surface 3252 for cooperating with the locking groove 330. The inclined surface 3252 cooperates with the edge of the locking groove 330 so that when the rotating component 3 is reset from the unlocked state to the locked state, the slide bar 325 is guided into the locking groove 330.

[0060] The positioning end 3251 refers to the protrusion 121 structure located at the end of the slide rod 325 to limit its displacement. It can be implemented using a conical or wedge-shaped geometry, and its outer contour forms a contact surface with the edge of the locking groove 330. The inclined surface 3252 refers to the inclined surface extending outward from the root of the positioning end 3251, and can be implemented using an inclination angle of 15-55°. The inclined surface 3252 provides guidance through its sliding contact with the edge of the locking groove 330. The edge of the locking groove 330 refers to the edges on both sides of the groove on the pivot, and can be implemented using a chamfered or rounded transition structure to form a sliding fit with the inclined surface 3252.

[0061] Preferably, the inclination angle of the inclined plane 3252 is 45°.

[0062] In practice, when the rotating component 3 needs to return from the unlocked state to the locked state, the operator releases the external force applied to the operating end 324. At this time, the slide rod 325 moves along the sliding groove 323 towards the locking groove 330 under the action of the return spring or gravity. The inclined surface 3252 of the positioning end 3251 first contacts the edge of the locking groove 330. Under the guidance of the inclined surface 3252, the slide rod 325 undergoes lateral displacement correction, so that the axis of the slide rod 325 is automatically aligned with the center line of the locking groove 330. As the slide rod 325 continues to move, the positioning end 3251 completely enters the interior of the locking groove 330, the contact pressure between the inclined surface 3252 and the edge of the locking groove 330 disappears, and the slide rod 325 is embedded into the bottom of the locking groove 330 under the action of axial force, completing the automatic reset of the locked state.

[0063] Through the above technical solution, this application realizes the automatic reset function of the rotating component 3 in the locked state, effectively avoiding the locking failure problem caused by the misalignment of the slide bar 325, and improving the operation efficiency when the side rail is closed. The inclined surface 3252 guide mechanism maintains the stable cooperation between the slide bar 325 and the locking groove 330 under dynamic load, ensuring that the lateral support stiffness of the trolley is not affected by the unlocking operation, while reducing component wear during repeated opening and closing.

[0064] In one embodiment, this application further proposes that a reset member is provided in the sliding groove 323. The reset member is used to automatically push the slide rod 325 back to the locking direction after the external force is released at the operating end 324, so that the positioning end 3251 of the slide rod 325 is re-embedded in the locking groove 330, thus completing the automatic reset of the locking part.

[0065] The reset component is preferably a compression spring disposed between the sliding groove 323 and the slide rod 325. One end of the spring abuts against the inner wall of the sliding groove 323 or the end limiting structure, and the other end abuts against the limiting shoulder or tail end of the slide rod 325. It can be compressed when the slide rod 325 is in the unlocked state, and provides axial reset force after the external force is released, so that the slide rod 325 moves along the sliding groove 323 towards the locking groove 330 and completes relocking.

[0066] With the above configuration, the slide bar 325 can automatically return to the locked state under the elastic force of the reset component without manual reset after each unlocking action. This ensures that the rotating component 3 is reliably fixed to the stroller body 1 during the closing process, avoiding locking failure caused by abnormal position of the slide bar 325. The reset component has a simple structure, is easy to assemble, and has good fatigue durability and recovery stability. It is suitable for the daily high-frequency opening and closing use scenarios of children's strollers, effectively improving the overall ease of use and structural safety.

[0067] In one embodiment, reference is made to... Figure 8 This application further proposes that the trolley body 1 also includes a connecting seat 11 and a plug-in member 12. The plug-in member 12 includes a protrusion 121 and a second hinge end 122. The protrusion 121 is connected to the end of the fourth link 24 away from the second link 21 or the third link 22. The second hinge end 122 is rotatably connected to the connecting seat 11.

[0068] The connector 12 is a structural unit that enables the fourth link 24 to be rotatably connected to the bottom of the trolley body 1. Specifically, it can be made of stamped metal sheet or injection-molded high-strength plastic. One end of the connector forms a protrusion 121 that mates with the end of the fourth link 24. The protrusion 121 can be fixedly connected to the fourth link 24 via a slot, screw, or riveting to ensure stability during load transmission. The other end of the connector 12 forms a second hinge end 122, which is hinged to the connecting seat 11 via a hinge pin, allowing the fourth link 24 to rotate vertically around the connecting seat 11.

[0069] Specifically, during the unfolding of the trolley, when the rotating component 3 rotates to the second state, the fourth link 24 is driven to rotate as a whole through the protrusion 121 of the connector 12 and the second hinge end 122, and stays at a preset angle position under the constraint of the limiting structure of the connecting seat 11, forming a side-by-side arrangement with the first link 31 to form a stable support structure; when the trolley is folded or the rotating component 3 is stored, the fourth link 24 can be folded relative to the connecting seat 11 around the second hinge end 122, thereby reducing the overall volume and improving the compactness of the trolley storage.

[0070] Through the above structural design, the connector 12 not only achieves a reliable connection and flexible rotation between the fourth link 24 and the vehicle body, but also enhances the stability and load-bearing capacity of the structure during use through the stable fixation between its end protrusion 121 and the link. Combined with the structural arrangement of the connecting seat 11, the rotating component 3 can achieve smooth posture transformation during opening and closing, and forms a three-dimensional support path in use, improving the overall structural strength and ease of operation of the side-opening stroller.

[0071] In one embodiment, reference is made to... Figure 9 This application further proposes a symmetrically arranged rotary connection structure between the two first connecting rods 31 and their corresponding two fourth connecting rods 24 to achieve a movable connection, forming a symmetrical and parallel support configuration when the rotating component 3 switches from the first state to the second state. The end of each first connecting rod 31 and the end of its corresponding fourth connecting rod 24 are rotatably connected by a coaxial pin provided on the connecting component 32. The pin passes through the mating holes on the first connecting rod 31 and the fourth connecting rod 24, keeping them relatively fixed in the axial direction and rotatably fitted in the radial direction. Preferably, the mating holes may be provided with nylon bushings or limiting washers to reduce metal-to-metal friction and ensure smooth rotation and wear resistance.

[0072] In one embodiment, this application further proposes that the snap-fit ​​portion also includes a fixing member 327, and a limiting groove 3253 is formed axially on the outer periphery of the slide rod 325. The two side walls opposite to the sliding groove 323 are respectively provided with fixing holes 326 corresponding to the limiting groove 3253. The fixing member 327 passes through the fixing hole 326 and partially extends into the limiting groove 3253 to limit the axial movement stroke of the slide rod 325.

[0073] The slide rod 325 has a limiting groove 3253 formed along its outer periphery in the axial direction. This limiting groove 3253 can be a recessed annular groove or a strip-shaped groove structure, used to form a positional limiting fit with the fixing member 327. The sliding groove 323 is a groove structure provided on the connecting assembly 32 or the guide assembly, used to guide the slide rod 325 to slide axially within it. Preferably, the two opposite sidewalls of the sliding groove 323 are respectively provided with through holes, i.e., fixing holes 326, the axis of which is perpendicular to the sliding direction. The fixing member 327 passes through the oppositely arranged fixing holes 326 and partially extends into the limiting groove 3253 on the slide rod 325. With this structure, when the slide rod 325 slides axially within the sliding groove 323, the sliding of the fixing member 327 within the limiting groove 3253 is restricted, thereby limiting the stroke of the slide rod 325. The length of the limiting groove 3253 determines the effective distance that the slide bar 325 can move, thereby preventing it from sliding out or entering an abnormal position due to external force, and ensuring the safety and reliability of the structural movement.

[0074] This embodiment, through the cooperative structure of the fixing member 327 and the limiting groove 3253, effectively controls the sliding range while ensuring the sliding function, avoiding problems such as the slide rod 325 becoming loose or exceeding the travel limit, and improving the stability and durability of the structure. This structure is particularly suitable for the moving parts of children's strollers, meeting the dual requirements of safety and controllability.

[0075] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A side opening door stroller, characterized in that, include: The cart body (1); The fixing component (2) is provided at least on one side of the trolley body (1); A rotating component (3) is detachably or rotatably connected to the fixed component (2), wherein the rotating component (3) has two states: In the first state, the rotating component (3) is housed in the stroller body (1) and an opening (4) is formed on one side of the stroller body (1) for children to enter and exit. In the second state, the rotating component (3) cooperates with the fixing component (2) to block the opening (4) and provide support for the trolley body (1).

2. The side opening door stroller of claim 1, wherein, The rotating component (3) rotates outward relative to the fixed component (2) toward the outside of the trolley body (1).

3. The side opening door stroller of claim 2, wherein, The rotating component (3) includes a first connecting rod (31) and a connecting component (32). One end of the two first connecting rods (31) is rotatably connected. There are two connecting components (32). The other ends of the two first connecting rods (31) are detachably or rotatably connected to the fixed component (2) through the connecting component (32).

4. The side opening door stroller of claim 3, wherein, The fixing component (2) includes a second link (21), a third link (22) and two fourth links (24). One end of the second link (21) is rotatably connected to one end of the third link (22). The second link (21) and the third link (22) are provided with through holes (23). One of the fourth links (24) is hinged to the second link (21) through the through hole (23), and the other fourth link (24) is hinged to the third link (22) through the through hole (23).

5. The side-opening child stroller according to claim 4, characterized in that, The connecting assembly (32) includes a pivot and a pivot seat. The pivot has a first groove (321) and the first connecting rod (31) is partially disposed in the first groove (321). The pivot seat has a second groove (328) and the fourth connecting rod (24) is partially disposed in the second groove (328).

6. The side-opening child stroller according to claim 5, characterized in that, A connecting portion (331) is also provided between the pivot and the pivot seat, the connecting portion (331) including a fixed end (3311) connected to the pivot. and a first hinge end (3312) rotatably connected to the pivot, the first hinge end (3312) being used to rotate the pivot relative to the pivot within a predetermined angle range, wherein: When the rotating assembly (3) is in the second state, the first link (31) and its corresponding fourth link (24) are arranged side by side along the trolley body (1) to form the opening (4).

7. The side-opening child stroller according to claim 5, characterized in that, The pivot is also provided with a first connecting hole (322), the pivot is connected to the first connecting rod (31) through the first connecting hole (322), the pivot seat is also provided with a second connecting hole (329), the second connecting hole (329) is arranged opposite to the through hole (23), and the pivot is hinged to the fourth connecting rod (24) through the second connecting hole (329).

8. The side-opening child stroller according to claim 5, characterized in that, The pivot seat is also provided with a locking groove (330), and the pivot is also provided with a locking part, the locking part including a sliding groove (323), an operating end (324) for external pressing or lifting, and a slide rod (325) extending axially from the operating end (324) and passing through the sliding groove (323), wherein the locking part has two states: When in the unlocked state, the slide bar (325) moves along the sliding groove (323) toward the operating end (324) to disengage the slide bar (325) from the locking groove (330). When in the locked state, the slide bar (325) moves away from the operating end (324) along the sliding groove (323) so that at least part of the slide bar (325) is embedded in the locking groove (330).

9. The side-opening child stroller according to claim 8, characterized in that, The slide bar (325) has a positioning end (3251) on the side away from the operating end (324). The periphery of the positioning end (3251) forms an inclined surface (3252) for cooperating with the locking groove (330). The inclined surface (3252) cooperates with the edge of the locking groove (330) so that when the rotating assembly (3) is reset from the unlocked state to the locked state, it guides the slide bar (325) into the locking groove (330).

10. The side-opening child stroller according to claim 5, characterized in that, The snap-fit ​​part also includes a fixing member (327). A limiting groove (3253) is provided axially on the outer periphery of the slide rod (325). Fixing holes (326) corresponding to the limiting groove (3253) are respectively provided on the opposite side walls of the slide groove (323). The fixing member (327) passes through the fixing hole (326) and partially extends into the limiting groove (3253) to limit the axial movement stroke of the slide rod (325).

Images