Folding stroller

Abstract

The application provides a folding stroller, and relates to the technical field of children's products. The folding stroller comprises a folding frame, a laterally folding seat and a connecting assembly. The connecting assembly comprises at least one plug-in part and at least one plug-in adapter. One of the plug-in part and the plug-in adapter is arranged on the folding frame, and the other is arranged on the laterally folding seat. The plug-in adapter is formed with a plug-in groove. The plug-in part can be operatively moved into or out of the plug-in groove of the at least one plug-in adapter, so that the folding frame and the laterally folding seat are switched between a connected state and a separated state. In the connected state, the plug-in part and the plug-in adapter form a limiting fit to limit relative rotation between the laterally folding seat and the folding frame. The application can realize the detachability of the folding seat, and can improve the diversity and convenience of consumer use of the product.

Description

Technical Field

[0001] This application relates to the field of children's products technology, specifically to a folding stroller. Background Technology

[0002] To achieve compact storage, most folding strollers on the market employ a side-folding structure. Side-folding means that the stroller's frame structure, through hinges and linkage mechanisms, can fold and fold towards the side of the stroller, significantly reducing its overall size when stored. However, the seat of side-folding strollers is usually fixedly connected to or integrally molded with the frame, preventing quick disassembly and greatly limiting the stroller's flexibility. Utility Model Content

[0003] In view of this, this application provides a folding stroller that enables the detachable folding seat, thereby improving the versatility and convenience of product use for consumers.

[0004] This application provides the following technical solution: In a first aspect, embodiments of this application provide a folding stroller, the folding stroller including a folding frame, a side-folding seat, and a connecting assembly; The connection assembly includes at least one connector and at least one connector adapter, one of which is disposed on the folding frame and the other is disposed on the side-folding seat. The connector includes a connector portion, and the connector adapter has a slot. The connector portion is operable to move into or out of at least one of the slots of the connector adapter, allowing the folding frame and the side-folding seat to switch between a connected state and a disconnected state. In the connected state, the connector and the connector adapter form a limiting engagement to restrict relative rotation between the side-folding seat and the folding frame.

[0005] In some embodiments of the first aspect, the connection assembly further includes an anti-disengagement element, one of the plug and the plug adapter being provided with the anti-disengagement element and the other being provided with an anti-disengagement hole, the anti-disengagement element including a movable anti-disengagement portion, which, in the connected state, can selectively move into the anti-disengagement hole to prevent the plug from disengaging from the slot.

[0006] In some embodiments of the first aspect, the connection assembly further includes a drive member disposed on one of the plug-in member and the plug-in adapter, the drive member comprising: The extrusion part is movably configured to push against the anti-detachment part and generate a force that causes the anti-detachment part to disengage from the anti-detachment hole.

[0007] In some embodiments of the first aspect, there are multiple plug-in adapters and plug-in members, and they are distributed circumferentially along the side-folding seat. Each plug-in member can selectively adapt to a different plug-in adapter so that the side-folding seat can be connected to the folding frame in at least two different orientations.

[0008] In some embodiments of the first aspect, the insertion direction of the plug is parallel to the longitudinal section of the folding stroller; And / or, the slot has an opening and a bottom that are positioned opposite each other, with the opening facing the bottom of the folding stroller.

[0009] In some embodiments of the first aspect, the folding frame includes: Two side frames are spaced apart along the width of the folding frame; and A lateral folding frame assembly includes a first frame connector, a second frame connector, and a first locking member. Along the width direction of the folding frame, the first frame connector is connected to one of the frame side frames, and the second frame connector is connected to the other frame side frame. The first frame connector and the second frame connector are slidably connected relative to each other, allowing the folding frame to switch between a laterally unfolded state and a laterally retracted state. One of the first frame connector and the second frame connector is provided with the first locking member, which can lock the other at least in the laterally unfolded state.

[0010] In some embodiments of the first aspect, the first locking member is disposed on the second frame connector, and the first frame connector is provided with a first snap-fit ​​hole; The first locking member includes a movable first latching part. When the first frame connector moves and drives the first latching part to the position corresponding to the first latching hole, the first latching part can selectively latch into or disengage from the first latching hole. When the first snap-fit ​​part snaps into the first snap-fit ​​hole, it restricts the relative sliding between the first frame connector and the second frame connector, so that the folding frame is in a lateral unfolded state.

[0011] In some embodiments of the first aspect, the second frame connector has a first snap-fit ​​groove, and the frame lateral retraction assembly includes a second locking member disposed on the second frame connector. The second locking member includes a movable second snap-fit ​​portion, which, when the first snap-fit ​​portion disengages from the first snap-fit ​​hole, is elastically biased to selectively move into the first snap-fit ​​groove, preventing the first snap-fit ​​portion from moving toward the first snap-fit ​​hole.

[0012] In some embodiments of the first aspect, the end of the first frame connector away from the second frame connector is further provided with a second snap-fit ​​hole. By moving the first frame connector, the first snap-fit ​​part is moved to the position corresponding to the second snap-fit ​​hole. The first snap-fit ​​part can also selectively snap into or out of the second snap-fit ​​hole, so that the folding frame is in a laterally retracted state.

[0013] In some embodiments of the first aspect, the frame lateral retraction assembly further includes a pusher member disposed on the first frame connector. The pusher member is located between the first snap-fit ​​hole and the second snap-fit ​​hole. The pusher member moves with the first frame connector and, when passing the position corresponding to the second snap-fit ​​portion, is able to push against the second snap-fit ​​portion and form a force that causes the second snap-fit ​​portion to disengage from the first snap-fit ​​groove.

[0014] Secondly, this application embodiment also provides a folding stroller, which includes a folding frame, a side-folding seat, and a connecting assembly; The connection assembly includes at least one connector and at least one connector adapter, one of which is disposed on the folding frame and the other is disposed on the side-folding seat. The connector includes a connector portion, the connector adapter is formed with a slot, and the connector portion is operable to move into or out of at least one of the slots of the connector adapter, so that the folding frame and the side-folding seat can switch between a connected state and a disconnected state. The side-folding seat includes two seat side frames and a seat side-folding assembly. The two seat side frames are spaced apart along the width direction of the side-folding seat. The side-folding seat is folded or unfolded by the seat side-folding assembly, which causes the two seat side frames to move closer or further apart, so that the side-folding seat switches between a side-folded state and a side-folded state.

[0015] In some embodiments of the second aspect, the seat side frame includes a seat body and a backrest, the backrest being able to move closer to or further away from the seat body to switch between a folded state and an unfolded state of the seat side frame; At least one of the seat side brackets abuts or latches with the seat side folding assembly, so that the seat side bracket restricts the folding of the seat side folding assembly; When the seat side frame is folded, the seat side folding assembly disengages from the seat side frame, causing the two seat side frames to move closer or further apart, thus switching the side-folding seat between a side-expanded state and a side-retracted state.

[0016] In some embodiments of the second aspect, the seat lateral folding assembly includes a first lateral folding seat connector and a second lateral folding seat connector, the first lateral folding seat connector being rotatably disposed on one of the seat side frames, the second lateral folding seat connector being rotatably disposed on another of the seat side frames, and the first lateral folding seat connector and the second lateral folding seat connector being rotatably connected to each other. By rotating the first and second side-folding seat connectors relative to each other, the two seat side frames move closer or further apart, allowing the side-folding seat to switch between a side-expanded state and a side-retracted state.

[0017] In some embodiments of the second aspect, at least one of the first lateral folding seat connector and the second lateral folding seat connector is provided with a first limiting portion, in the lateral unfolded state: The first side-folding seat connector and the second side-folding seat connector are mutually abutted and limited by the first limiting part. The first limiting part and the seat side frame abut and limit each other to prevent rotation towards the bottom of the side-folding seat. And / or, the first limiting part and the seat side frame abut against each other to prevent them from rotating toward the bottom of the lateral folding seat.

[0018] In some embodiments of the second aspect, the seat side frame includes a seat body and a backrest, the backrest being rotatably disposed on the seat body and capable of rotating relative to the seat body to switch between a folded and unfolded state of the seat side frame; The first lateral folding seat connector is rotatably disposed on the seat body portion of one of the seat side frames, the second lateral folding seat connector is rotatably disposed on the seat body portion of another of the seat side frames, and the seat back portion has a second limiting portion. When the seat side frame is in the flipped-out state and the side-folding seat is in the side-folding state, the second limiting part abuts against at least one of the first side-folding seat connector and the second side-folding seat connector to prevent it from rotating away from the bottom of the side-folding seat.

[0019] According to the above embodiment of the folding stroller, a connector provided on one of the frame or the seat is aligned and pushed into a slot of a connector provided on the other. When the connector is fully inserted into the slot, a tight fit is formed. By reversing the operation, the connector can be pulled out of the slot, thus separating the side-folding seat from the folding frame. In the connected state, the fit between the connector and the connector forms a crucial limiting fit, effectively restricting the relative rotational movement between the side-folding seat and the folding frame. This ensures that the seat is stably fixed to the frame during use, preventing wobbling, twisting, or accidental detachment, thus guaranteeing the safety and comfort of the child.

[0020] Therefore, by enhancing usability and versatility, the seat can be quickly attached and detached with a simple plug-and-play operation, allowing the same folding frame to accommodate multiple different seats. Users can quickly switch or remove the seat according to different travel scenarios (such as driving, walking, and staying at home), greatly expanding the product's application range. Furthermore, users can fold the seat and the side-folding frame separately before storing them. This separate folding strategy avoids the seat obstructing the frame folding process in traditional one-piece structures, achieving a smaller storage volume than a single fold, making it easier to carry and store.

[0021] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a folding stroller from one perspective in one embodiment; Figure 2 This is a structural schematic diagram of a folding stroller from one perspective in one embodiment; Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the diagram; Figure 4 This is a schematic diagram of the structure of a plug-in adapter from one perspective in one embodiment; Figure 5 This is a structural schematic diagram of a plug-in adapter from another perspective in one embodiment; Figure 6 This is a schematic diagram of the structure of a connector from one perspective in one embodiment; Figure 7 This is a structural schematic diagram of a connector from another perspective in one embodiment; Figure 8 This is a schematic diagram of the structure of a frame lateral folding assembly from one perspective in one embodiment; Figure 9This is a structural schematic diagram from another perspective of a frame lateral folding assembly in one embodiment; Figure 10 This is a structural schematic diagram from another perspective of a frame lateral folding assembly in one embodiment; Figure 11 This is a structural schematic diagram of a side-folding seat from one perspective in one embodiment; Figure 12 for Figure 11 A magnified schematic diagram of the structure at point B in the diagram.

[0023] Explanation of key component symbols: 10-fold stroller; 100 - Side-folding seat; 110 - Seat side frame; 111 - Seat backrest; 1111 - Second limiting part; 112 - Seat body; 120 - Seat side-folding assembly; 121 - First side-folding seat connector; 122 - Second side-folding seat connector; 1221 - First limiting part; 200-Folding frame; 210-Frame side-folding assembly; 211-First frame connector; 2111-First snap-fit ​​hole; 212-First locking element; 2121-Second snap-fit ​​part; 2122-Second snap-fit ​​elastic part; 2123-First snap-fit ​​part; 2124-First snap-fit ​​elastic part; 2125-Second snap-fit ​​hole; 213-Second frame connector; 2131-First snap-fit ​​groove; 214-Push-back element; 300 - Connecting component; 310 - Plug-in adapter; 311 - Slot; 312 - Pressing part; 313 - Anti-detachment hole; 314 - Drive elastic part; 320 - Plug-in part; 321 - Plug-in part; 322 - Anti-detachment part; 323 - Anti-detachment elastic part. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0025] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0026] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0027] In related technologies, commercially available folding strollers typically employ a side-folding structure to achieve compact storage. Side-folding refers to the stroller's frame structure folding to the side via hinges and linkage mechanisms, significantly reducing its overall size when stored. However, the seat of these side-folding strollers is usually fixedly connected to or integrally molded with the frame, preventing quick disassembly and greatly limiting the stroller's flexibility.

[0028] As shown in Figure 1, Figure 2 and Figure 3 As shown, to solve the above-mentioned technical problems, this embodiment provides a folding stroller 10, which includes a folding frame 200, a side-folding seat 100, and a connecting assembly 300. The connecting assembly 300 includes at least one connector 320 and at least one connector 310, one of which is disposed on the folding frame 200 and the other on the side-folding seat 100. The connector 320 includes a connector portion 321, and the connector 310 has a slot 311. The connector portion 321 can be operably moved into or out of the slot 311 of at least one connector 310, so that the folding frame 200 and the side-folding seat 100 can switch between a connected state and a disconnected state; and in the connected state, the connector 320 and the connector 310 form a limiting engagement to restrict relative rotation between the side-folding seat 100 and the folding frame 200.

[0029] In these embodiments, the folding frame 200 can be selected from a commonly available side-folding stroller frame structure, which has a front support, a rear support, a push rod, and a linkage folding mechanism, and can be folded laterally along the vehicle body during operation to reduce storage volume. The side-folding seat 100 is used to carry the child and has the ability to fold in conjunction with the folding frame 200.

[0030] The key point is that the folding frame 200 and the side-folding seat 100 are detachably connected via a connecting component 300. The connecting component 300 includes at least one connector 320 and at least one connector adapter 310. In this embodiment, the connector 320 is fixedly mounted on the left and right side frames of the folding frame 200, while the connector adapter 310 is correspondingly mounted on the left and right connecting ear plates at the bottom of the side-folding seat 100. Of course, in other embodiments, the connector 320 can be located on the seat, and the connector adapter 310 can be located on the folding frame 200; their positions can be interchanged without affecting the essence of this application.

[0031] Furthermore, the connector 320 includes a protruding connector portion 321, which, for example, is cylindrical, rectangular, or a boss structure with a guide bevel, etc. The connector adapter 310 has a slot 311 internally formed to match the shape of the connector portion 321. During assembly, the user aligns the side-folding seat 100 with the folding frame 200, presses it down or pushes it horizontally, causing the connector portion 321 to slide into the slot 311, completing the connection. When disassembly is required, the reverse operation allows the connector portion 321 to be moved out of the slot 311, achieving quick separation.

[0032] Most importantly, in the connected state, i.e., when the plug portion 321 is fully inserted into the slot 311, a limiting engagement is formed between the plug-in member 320 and the plug-in adapter 310. Specifically, the inner wall contour of the slot 311 fits tightly against the outer peripheral surface of the plug portion 321, and a stop surface is provided in at least one direction (e.g., the front-to-back direction or the up-and-down direction), thereby effectively limiting the relative rotation of the side-folding seat 100 relative to the folding frame 200 about the vertical or horizontal axis. For example, the plug portion 321 is a column with a flat surface, and the slot 311 has a corresponding limiting rib. When the two work together, they can prevent the seat from shaking or rotating due to bumps during travel, ensuring safety during use.

[0033] Through the above structure, the folding stroller 10 of this application not only retains the traditional side-folding function, but also achieves a quick and detachable connection between the seat and the frame. Consumers can flexibly assemble and disassemble the stroller according to usage scenarios (such as only needing to push the frame, changing to different styles of seats, washing the seats, etc.), significantly improving the product's versatility and convenience.

[0034] like Figure 3 and Figure 4 As shown, in some embodiments, the connecting assembly 300 further includes an anti-disengagement component. One of the plug-in 320 and the plug-in adapter 310 is provided with an anti-disengagement component, and the other is provided with an anti-disengagement hole 313. The anti-disengagement component includes a movable anti-disengagement part 322. In the connected state, the anti-disengagement part 322 can selectively move into the anti-disengagement hole 313 to prevent the plug-in 321 from coming out of the slot 311.

[0035] In these embodiments, to further improve connection reliability, the side-folding seat 100 is prevented from accidentally detaching from the folding frame 200 due to vibration or external force during use.

[0036] Specifically, one of the connector 320 and the connector adapter 310 is provided with an anti-detachment component, while the other is provided with an anti-detachment hole 313. In this embodiment, the anti-detachment component is integrated into the connector adapter 310, while the anti-detachment hole 313 is formed on the side wall of the connector portion 321 of the connector 320. Of course, in other embodiments, the anti-detachment component can be provided on the connector 320, and the anti-detachment hole 313 can be provided on the connector adapter 310, with equivalent function.

[0037] The anti-detachment component includes a movable anti-detachment part 322. For example, the anti-detachment part 322 can be in the form of a sliding button, an elastic pin, a pressing spring, or a rotating latch. In this embodiment, the anti-detachment component adopts an elastic pressing pin structure: it has a spring inside, and under normal conditions, the anti-detachment part 322 extends outward under the action of the spring; when the insertion part 321 is inserted into the slot 311, the outer wall of the insertion part 321 presses the anti-detachment part 322 to temporarily retract it; when the insertion part 321 is fully in place, the anti-detachment hole 313 is exactly aligned with the anti-detachment part 322, and at this time, the anti-detachment part 322 automatically springs into the anti-detachment hole 313 under the action of the spring's restoring force, forming a mechanical lock.

[0038] In the connected state, the anti-disengagement part 322 moves into the anti-disengagement hole 313, thereby forming a physical barrier in the insertion direction (i.e. the direction in which the insertion part 321 is about to disengage), effectively preventing the insertion part 321 from accidentally disengaging from the slot 311, and significantly improving the safety of use.

[0039] When it is necessary to disassemble the side-folding seat 100, the user only needs to manually press the anti-slip component (e.g., press the exposed button or lever) to make the anti-slip part 322 overcome the spring force and exit the anti-slip hole 313, thus releasing the locking state. Then, the plug part 321 can be smoothly pulled out of the slot 311 to complete the separation operation. This process is simple, reliable, and can be completed with one hand.

[0040] By introducing a cooperative structure of anti-detachment component and anti-detachment hole 313, this application achieves quick assembly and disassembly while ensuring connection stability and safety of use, making it particularly suitable for scenarios such as bumpy roads or high-speed pushing.

[0041] like Figure 5 As shown, in some embodiments, the anti-detachment component further includes an anti-detachment elastic portion 323, which is connected to the anti-detachment portion 322. The anti-detachment elastic portion 323 is used to provide an elastic restoring force to the anti-detachment portion 322, so that the anti-detachment portion 322 has a tendency to move into the anti-detachment hole 313.

[0042] In this embodiment, taking the anti-detachment elastic part 323 as a compression spring as an example, one end of which abuts against the inner wall of the insertion adapter 310, and the other end is connected to the tail of the anti-detachment part 322. When the insertion part 321 is not fully inserted into the slot 311, the outer wall of the insertion part 321 presses against the anti-detachment part 322, causing it to retract inward against the spring force. Once the insertion part 321 is fully in place and the anti-detachment hole 313 is aligned with the position of the anti-detachment part 322, the anti-detachment elastic part 323 drives the anti-detachment part 322 to pop outward and automatically embed into the anti-detachment hole 313, completing the self-locking.

[0043] This elastic reset structure ensures automatic locking in the connected state, achieving reliable anti-detachment without additional user intervention, thus improving ease of use and safety. Furthermore, when disassembly is required, simply applying external force (such as pressing the exposed end of the anti-detachment part 322) overcomes the elasticity of the anti-detachment elastic part 323, causing the anti-detachment part 322 to exit the anti-detachment hole 313 and unlock, making operation simple.

[0044] It is understood that the anti-detachment elastic part 323 is not limited to a compression spring, but may also be a torsion spring, a spring sheet, a rubber elastomer or other elastic element with the ability to recover deformation. As long as it can provide a stable restoring force for the anti-detachment part 322, so that it has the tendency to move in the direction of the anti-detachment hole 313, it is within the protection scope of this application.

[0045] like Figure 3 and Figure 5 As shown, in some embodiments, the connecting assembly 300 further includes a driving member disposed on one of the plug-in member 320 and the plug-in adapter 310. The driving member includes a pressing portion 312, which is movably configured to push against the anti-detachment portion 322 and form a force that causes the anti-detachment portion 322 to disengage from the anti-detachment hole 313.

[0046] In these embodiments, to further improve the convenience and reliability of disassembly operations, the connecting assembly 300 also includes a driving component. In this embodiment, the driving component is integrated into the outer wall of the plug-in adapter 310 for easy operation by the user's fingers. Of course, in other embodiments, the driving component can also be located on the plug-in adapter 320, as long as it can act on the anti-detachment part 322.

[0047] The pressing part 312 of the driving member is movably disposed within the housing of the plug-in adapter 310 and slides perpendicular to the plugging direction (or at a preset angle). When the user presses the exposed operating end of the driving member, the pressing part 312 moves inward and directly abuts against the force-bearing surface of the anti-detachment part 322, applying a force that overcomes the elastic force of the anti-detachment elastic part 323, forcing the anti-detachment part 322 to exit from the anti-detachment hole 313, thereby releasing the locking state.

[0048] Specifically, in this embodiment, the pressing part 312 and the driving member are integrally formed plastic lever structures, with an inclined surface or arc-shaped protrusion at the inner end that cooperates with the corresponding inclined surface at the tail of the anti-slip part 322. When the driving member is pressed, the inclined surfaces interact, converting the user's pressing force into a horizontal thrust, efficiently pushing the anti-slip part 322 back. Once the anti-slip part 322 is completely disengaged from the anti-slip hole 313, the user can easily pull the plug 321 out of the slot 311, completing the removal of the seat.

[0049] This drive mechanism makes unlocking easier and more intuitive, especially suitable for one-handed operation, significantly improving the user experience. At the same time, because the unlocking action is completed by a dedicated drive structure, it avoids structural wear or accidental activation that could be caused by directly pressing the anti-detachment part 322, thus improving the mechanism's durability and reliability.

[0050] It is understood that the structure of the driving component is not limited to a lever, and can also be a button, slider, pull rope or rotary cam, etc. As long as it includes a movable pressing part 312 and can apply a force to the anti-detachment part 322 to make it detach from the anti-detachment hole 313, it falls within the protection scope of this application.

[0051] like Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the driving member further includes a driving elastic part 314, which is connected to the pressing part 312. The driving elastic part 314 is used to provide an elastic restoring force to the pressing part 312, so that the pressing part 312 has a tendency to move in a direction away from the anti-detachment part 322.

[0052] In this embodiment, the driving elastic part 314 is a compression spring, one end of which is fixed to the inner wall of the insertion adapter 310, and the other end abuts against the back side of the pressing part 312, that is, the side away from the anti-detachment part 322. When the user does not operate the driving component, the driving elastic part 314 is in a naturally extended or pre-compressed state, pushing the pressing part 312 to return to its original position (i.e. towards the outside of the vehicle body or the operating surface), keeping it separated from the anti-detachment part 322, thereby avoiding interference with the anti-detachment part 322, and ensuring that the anti-detachment part 322 is stably embedded in the anti-detachment hole 313 under the action of the anti-detachment elastic part 323, maintaining the locked state.

[0053] When the user needs to remove the seat, external force is applied to press the operating end of the drive component, overcoming the elastic force of the drive elastic part 314, causing the pressing part 312 to move inward and push against the anti-disengagement part 322, thus causing it to exit the anti-disengagement hole 313. After releasing the press, the drive elastic part 314 immediately drives the pressing part 312 to automatically spring back to the initial position, completing the reset. This automatic reset mechanism not only improves the smoothness of operation but also effectively prevents the risk of mechanism deformation, spring failure, or accidental unlocking caused by the drive component being in a pressed-in state for a long time.

[0054] It is understood that the driving elastic part 314 is not limited to a compression spring, but may also be other forms of elastic elements such as tension springs, torsion springs, elastic rubber pads or leaf springs, as long as they can apply a restoring force to the squeezing part 312 to move it away from the anti-detachment part 322, they are all within the protection scope of this application.

[0055] like Figure 2 As shown, in some embodiments, there are multiple plug-in adapters 310 and plug-in members 320, and they are distributed circumferentially along the side-folding seat 100. Each plug-in member 320 can selectively adapt to different plug-in adapters 310 so that the side-folding seat 100 can be connected to the folding frame 200 in at least two different orientations.

[0056] In these embodiments, to further enhance the flexibility of use, the folding frame 200 is provided with two plug-in fittings 320, which are located on the front side of the left and right frames of the frame respectively; correspondingly, the bottom of the side-folding seat 100 is provided with two plug-in fittings 310, which are located on the front and rear sides of its left and right connecting ear plates respectively, that is, arranged approximately 180° apart along the circumference of the seat.

[0057] With the above layout, users can choose to install the seat on the folding frame 200 in different orientations according to their actual needs: When the front connector 310 of the seat is connected to the connector 320 on the frame, the seat is in a "facing forward" position, suitable for regular pushing.

[0058] When the seat is rotated 180° so that the rear connector 310 aligns with the same set of connectors 320, the seat is in a "face-down" position, which facilitates face-to-face interaction between parents and children, and is especially suitable for young infants and toddlers.

[0059] Since the structures of each plug-in adapter 310 are exactly the same, and the positions and dimensions of the plug-in parts 320 are consistent, the same connection strength, limiting effect and anti-disengagement locking function can be achieved regardless of which set is selected, ensuring the safety and stability of use in different orientations.

[0060] It is understood that in other embodiments, multiple plug-in adapters 310 may be integrated onto the vehicle frame (e.g., arranged symmetrically front and rear), while the seat may only have one plug-in component 320. Alternatively, three or four sets of plug-in structures may be used to achieve multi-angle adjustments such as 90° and 120°. As long as the number and position of the plug-in components 320 and the plug-in adapters 310 meet the requirements of selective compatibility and can form an effective limiting connection, they all fall within the protection scope of this application.

[0061] In addition, to avoid misinstallation or misalignment, identification marks (such as raised dots, color codes, or asymmetrical guide bevels) can be set on the plug-in adapters 310 at different locations to guide users to correctly align the target interface and improve assembly efficiency and reliability.

[0062] like Figure 3 and Figure 4 As shown, in some embodiments, the insertion part 321 has at least one limiting end face, and each limiting end face abuts against the corresponding side of the slot wall on the slot 311 to form a limiting fit.

[0063] In these embodiments, to more reliably limit the relative rotation between the lateral folding seat 100 and the folding frame 200, the insertion portion 321 is provided with at least one limiting end face. Accordingly, the inner wall of the slot 311 is formed with a groove wall that matches the position and contour of the limiting end face.

[0064] When the insertion part 321 is fully inserted into the slot 311, the limiting end face abuts tightly against the slot wall, forming a surface-to-surface limiting fit. This fit prevents the insertion part 321 from rotating or sliding relative to the slot 311 in at least one horizontal direction (e.g., front-to-back or left-to-right), thereby effectively preventing the side-folding seat 100 from wobbling or deflecting during use due to bumps, turning, or the child twisting.

[0065] In this embodiment, the insertion part 321 has a non-circular cross-sectional structure, such as a rectangle, a D-shape, or a cylinder with a flat surface, and its outer circumference is provided with two mutually perpendicular limiting end faces. Correspondingly, the inner cavity of the slot 311 is also designed with a matching rectangular or D-shaped contour, and its side groove walls form corresponding limiting groove walls. When the insertion part 321 is inserted into place, the two limiting end faces are fully engaged with the corresponding groove walls, which not only restricts rotation around the vertical axis, i.e., seat orientation deflection, but also restricts translation along the lateral direction, significantly improving the connection rigidity and stability.

[0066] It is understood that the number and orientation of the limiting end faces can be adjusted according to actual needs. For example, in scenarios where only unidirectional rotation needs to be prevented, only one limiting end face can be set. When multi-degree-of-freedom constraints are required, three or more asymmetrically distributed limiting end faces can be set. As long as the limiting end face can form an abutment fit with the corresponding side of the slot wall within the slot 311, thereby effectively limiting relative rotation, it falls within the protection scope of this application.

[0067] In addition, to facilitate assembly guidance, a chamfer or bevel transition can be set between the limiting end face and the non-limiting area to make the insertion process smooth, while ensuring that the limiting surface is completely fitted after being in place, taking into account both assembly performance and locking reliability.

[0068] like Figure 4As shown, in some embodiments, the insertion direction of the insertion portion 321 is parallel to the longitudinal section of the folding stroller 10. And / or, the slot 311 has an opening and a bottom that are oppositely disposed, with the opening facing the bottom of the folding stroller 10.

[0069] In these embodiments, to further optimize the ergonomics of the assembly operation and improve connection stability, the insertion direction of the insertion part 321 (i.e., the direction of movement when inserting into or removing from the slot 311) is configured to be parallel to the longitudinal section of the folding stroller 10.

[0070] Here, the longitudinal section refers to the symmetrical plane formed by vertically cutting along the front-to-back direction of the stroller (i.e., from the push rod to the front wheel). Therefore, the insertion direction is horizontal (e.g., from front to back or from back to front), not vertical or inclined. When installing the side-folding seat 100, the user only needs to push it in or pull it out horizontally along the front-to-back direction of the stroller to complete the connection or disassembly. The operation path conforms to the natural force application habits of the human body, which is especially convenient for one-handed operation in confined spaces, avoiding the extra physical force required to lift upwards or press downwards.

[0071] Furthermore, in some embodiments, the slot 311 has an opening and a bottom that are positioned opposite each other. The opening faces the bottom of the folding stroller 10 (i.e., the ground direction). In other words, the slot 311 has an opening structure from bottom to top, and the insertion part 321 needs to be inserted into the opening from below and pushed upward to the bottom of the slot.

[0072] With the slot facing downwards, rainwater, dust, food crumbs, and other contaminants can be effectively prevented from falling into the slot 311 from above, keeping the connection mechanism clean and extending its service life. In the connected state, the weight of the seat keeps the insertion part 321 in close contact with the bottom of the slot, increasing the pressure on the contact surface and helping to improve the stability of the limiting fit.

[0073] Even if the anti-slip mechanism fails unexpectedly, the seat is unlikely to slide out on its own under the influence of gravity because the insertion direction is horizontal and the slot is facing downwards, providing passive safety.

[0074] like Figure 2 and Figure 8As shown, in some embodiments, the folding frame 200 includes two frame side frames and a frame lateral folding assembly 210, spaced apart along the width direction of the folding frame 200. The frame lateral folding assembly 210 includes a first frame connector 211, a second frame connector 213, and a first locking member 212. Along the width direction of the folding frame 200, the first frame connector 211 is connected to one of the frame side frames, and the second frame connector 213 is connected to the other frame side frame. The first frame connector 211 and the second frame connector 213 are slidably connected relative to each other, allowing the folding frame 200 to switch between a laterally unfolded state and a laterally retracted state. One of the first frame connector 211 and the second frame connector 213 is provided with the first locking member 212, which can at least lock the other in the laterally unfolded state.

[0075] In these embodiments, two frame side frames are spaced apart along the width direction (i.e., left and right direction) of the folding frame 200. Each frame side frame includes conventional children's vehicle frame components such as front wheel bracket, rear wheel bracket, push rod and linkage rod, which are used to support the whole vehicle and bear the driving load.

[0076] The key feature is that the frame lateral folding assembly 210 is connected between the two frame side frames to achieve the lateral folding and unfolding of the entire frame. Specifically, the frame lateral folding assembly 210 includes a first frame connector 211, a second frame connector 213, and a first locking member 212.

[0077] Along the width direction of the folding frame 200, a first frame connector 211 is fixedly connected to one of the frame side frames, such as the left side frame, and a second frame connector 213 is fixedly connected to another frame side frame, such as the right side frame. The first frame connector 211 and the second frame connector 213 are connected in a relatively slidable manner through a sliding pair (such as a guide rail and a groove, a sleeve and a rod, or a dovetail groove structure). When the user applies external force to push the two side frames closer together, the two connectors slide relative to each other along the width direction, causing the entire frame to switch from a laterally unfolded state (for normal use) to a laterally retracted state (for storage and transportation); the reverse operation unfolds the frame.

[0078] To ensure safe use, both connecting parts must be reliably locked in the laterally deployed position. Therefore, a first locking member 212 is provided on one of the first frame connecting part 211 and the second frame connecting part 213, and it is capable of locking the other at least in the laterally deployed position.

[0079] In this embodiment, the first locking member 212 is an elastic latching mechanism, including a pressing button, a locking tongue, and a return spring. When the two connecting members slide to the fully unfolded position, the locking tongue automatically springs into the positioning hole on the second frame connecting member 213, forming a mechanical lock. When folding is required, the user presses the button, overcoming the spring force to disengage the locking tongue from the positioning hole, releasing the lock, and then the frame can be slid closed.

[0080] This lateral folding assembly allows the folding frame 200 to maintain compact storage capacity while possessing high rigidity and ease of operation. More importantly, since the seat is independently mounted to the side frame via the aforementioned detachable connecting assembly 300, the seat installation and removal operations do not interfere with each other, even when the frame is folded or unfolded, truly achieving compatibility between the two major advantages of side folding function and quick seat removal.

[0081] It is understood that the first locking member 212 may also be a knob lock, lever lock, magnetic lock or other locking mechanism, as long as it can effectively limit the relative sliding of the two connecting members in the unfolded state, it is within the protection scope of this application.

[0082] like Figure 9 and Figure 10 As shown, in some embodiments, the first locking member 212 is disposed on the second frame connector 213, and the first frame connector 211 is provided with a first engaging hole 2111. The first locking member 212 includes a movable first engaging portion 2123. When the first frame connector 211 moves, causing the first engaging portion 2123 to move to the position corresponding to the first engaging hole 2111, the first engaging portion 2123 can selectively engage or disengage from the first engaging hole 2111. When the first engaging portion 2123 engages with the first engaging hole 2111, it restricts the relative sliding between the first frame connector 211 and the second frame connector 213, so that the folding frame 200 is in a laterally unfolded state.

[0083] In these embodiments, the first latching portion 2123 is an elastic locking tongue, which is installed in the housing of the second frame connector 213 by sliding or swinging, and under the action of the internal elastic element (such as a compression spring or a spring sheet), it has a tendency to extend toward the first latching hole 2111.

[0084] When the user unfolds the folding frame 200 from its laterally retracted state, the first frame connector 211 slides relative to the second frame connector 213 along its width. When both slide to the fully unfolded position, the first locking hole 2111 moves to a position aligned with the first locking part 2123. At this time, driven by the elastic element, the first locking part 2123 automatically engages with the first locking hole 2111, forming a mechanical lock, thereby effectively limiting further relative sliding between the first frame connector 211 and the second frame connector 213, keeping the folding frame 200 stably in its laterally unfolded state, ensuring safe use.

[0085] When the frame needs to be folded, the user operates the exposed operating end of the first locking member 212, such as by pressing a button or pulling a lever, causing the first locking part 2123 to retract against the elastic force and disengage from the first locking hole 2111. After the lock is released, the two side frames can be pushed closer together to complete the lateral folding.

[0086] This locking structure boasts advantages such as reliable self-locking, intuitive operation, and rapid response. Because the engagement between the locking hole and the locking part occurs at the final position of the fully extended position, accidental locking during operation is avoided. Simultaneously, the elastic reset design ensures automatic locking after each full extension, requiring no additional user confirmation and significantly improving safety.

[0087] It is understood that the movement of the first locking part 2123 is not limited to linear sliding, but can also be achieved by means of rotating swing arm, lever linkage, etc. The shape of the first locking hole 2111 can be a circular, square, or polygonal through hole or blind hole, as long as it can form an effective locking limit with the first locking part 2123, it is within the protection scope of this application.

[0088] like Figure 9 and Figure 10 As shown, in some embodiments, the first locking member 212 further includes a first snap-fit ​​elastic part 2124, which is connected to the first snap-fit ​​part 2123. The first snap-fit ​​elastic part 2124 is used to provide an elastic restoring force to the first snap-fit ​​part 2123, so that the first snap-fit ​​part 2123 has a tendency to snap into the first snap-fit ​​hole 2111.

[0089] In these embodiments, to further ensure that the folding frame 200 can automatically and reliably lock after being unfolded into place, a first snap-fit ​​elastic part 2124 is connected to a first snap-fit ​​part 2123 to provide an elastic restoring force to the first snap-fit ​​part 2123, so that it always has a tendency to move toward and engage with the first snap-fit ​​hole 2111.

[0090] Taking the first snap-fit ​​elastic part 2124 as a compression spring as an example, one end of it abuts against the inner wall of the second frame connector 213, and the other end is connected to the tail of the first snap-fit ​​part 2123. When the folding frame 200 is in the folded state or in the unfolding process, the outer wall of the first frame connector 211 presses against the first snap-fit ​​part 2123, causing it to retract against the spring force; once the first snap-fit ​​hole 2111 slides to the position aligned with the first snap-fit ​​part 2123, the first snap-fit ​​elastic part 2124 drives the first snap-fit ​​part 2123 to pop out quickly and automatically embed into the first snap-fit ​​hole 2111 to complete the locking.

[0091] This flexible reset means that users do not need to operate the locking mechanism when unfolding the frame. They only need to fully pull out the two side frames, and the system will automatically lock, effectively preventing the risk of accidental folding during use due to user negligence in not locking, and significantly improving product safety.

[0092] When the frame needs to be folded or closed, the user simply needs to press the operation button of the first locking member 212 (which is linked to the first locking part 2123), causing the first locking part 2123 to overcome the elastic force of the first locking elastic part 2124 and retract, disengaging from the first locking hole 2111, allowing it to slide freely into place. After releasing the button, the first locking elastic part 2124 pushes the first locking part 2123 back to the locking position, preparing it for the next unfolding.

[0093] It is understood that the first snap-fit ​​elastic part 2124 is not limited to a compression spring, but may also be a torsion spring, leaf spring, elastic rubber block or other elastic element with the ability to recover deformation. As long as it can apply a stable restoring force to the first snap-fit ​​part 2123, making it have the tendency to automatically snap into the first snap-fit ​​hole 2111, it is within the protection scope of this application.

[0094] like Figure 9 and Figure 10 As shown, in some embodiments, the second frame connector 213 has a first latching groove 2131, and the frame lateral retraction assembly 210 includes a second locking member disposed on the second frame connector 213. The second locking member includes a movable second latching portion 2121. When the first latching portion 2123 disengages from the first latching hole 2111, the second latching portion 2121 is elastically biased and can selectively move into the first latching groove 2131, preventing the first latching portion 2123 from moving towards the first latching hole 2111.

[0095] In these embodiments, to further enhance the safety of the folding stroller 10 in its laterally retracted state (i.e., folded state) and prevent the frame from accidentally unfolding due to vibration, squeezing, or accidental contact during transport or storage, the second frame connector 213 is also provided with a first locking groove 2131. Correspondingly, the frame lateral folding assembly 210 also includes a second locking member.

[0096] The second locking member is disposed on the second frame connector 213 and includes a movable second latching portion 2121. In this embodiment, the second latching portion 2121 is mounted in the housing of the second frame connector 213 by sliding or swinging, and is provided with a continuous elastic biasing force by a second elastic biasing element (such as a spring or sheet), which makes it tend to move toward the first latching groove 2131.

[0097] When the user operates the first locking member 212 to disengage the first latching part 2123 from the first latching hole 2111, they continue to push the two side frames closer together, bringing the frame into the fully retracted position. During this process, the first latching groove 2131 moves with the second frame connector 213 to a position aligned with the second latching part 2121. At this point, under the action of elastic biasing force, the second latching part 2121 automatically moves into the first latching groove 2131, forming a mechanical lock on the retracted state.

[0098] More importantly, once the second latching part 2121 enters the first latching slot 2131, its position precisely blocks the movement path of the first latching part 2123 toward the first latching hole 2111. Even if the user attempts to pull the frame outwards directly, the first latching part 2123 cannot be realigned and enter the first latching hole 2111 due to the physical obstruction of the second latching part 2121. This effectively prevents the frame from partially or fully unfolding without releasing the folding lock, avoiding the risk of pinching hands or structural damage.

[0099] When the frame needs to be re-deployed, the user must first operate the second locking component, such as by pressing its exposed button or lever, so that the second locking part 2121 overcomes the elastic bias force and exits the first locking groove 2131, thus releasing the retraction lock; then the frame can be deployed normally, and the first locking part 2123 can be smoothly aligned and locked into the first locking hole 2111, completing the deployment lock.

[0100] This dual-locking design achieves a safety loop with self-locking when unfolded and anti-accidental opening when closed, making it particularly suitable for high-frequency use or family scenarios with young children.

[0101] It is understood that the first locking groove 2131 can be a through groove or a blind groove, and its shape matches the second locking part 2121. The structure of the second locking member can also adopt alternative solutions such as a rotary cam, lever linkage or magnetic limit, as long as it can prevent the first locking part 2123 from moving towards the first locking hole 2111 in the closed state, it is within the protection scope of this application.

[0102] like Figure 9 and Figure 10As shown, in some embodiments, the second locking member includes a second snap-fit ​​elastic portion 2122, which is connected to the second snap-fit ​​portion 2121. The second snap-fit ​​elastic portion 2122 is used to provide an elastic restoring force to the second snap-fit ​​portion 2121, so that the second snap-fit ​​portion 2121 has a tendency to move into the snap-fit ​​groove.

[0103] In these embodiments, to achieve automatic and reliable locking in the retracted state, the second locking member further includes a second snap-fit ​​elastic portion 2122. The second snap-fit ​​elastic portion 2122 is connected to the second snap-fit ​​portion 2121 and is used to provide an elastic restoring force to the second snap-fit ​​portion 2121, so that it always has a tendency to move toward and embed itself into the first snap-fit ​​groove 2131.

[0104] Taking the second snap-fit ​​elastic part 2122 as a compression spring as an example, one end of it is fixed to the inner wall of the second frame connector 213, and the other end abuts against the tail of the second snap-fit ​​part 2121. When the frame is in the unfolded state or in the folding process, the outer contour of the first frame connector 211 presses against the second snap-fit ​​part 2121, causing it to temporarily retract against the spring force. When the frame is fully folded, the first snap-fit ​​groove 2131 slides to the position aligned with the second snap-fit ​​part 2121. At this time, the second snap-fit ​​elastic part 2122 drives the second snap-fit ​​part 2121 to pop out quickly and automatically embed into the first snap-fit ​​groove 2131, completing the mechanical locking of the folded state.

[0105] This automatic locking mechanism ensures that the stroller can be safely secured without any additional operation after the user completes the folding action. It effectively avoids the risk of the stroller suddenly popping open during carrying, storage, or transportation due to forgetting to lock, which could cause pinching, falling, or structural damage.

[0106] When the frame needs to be unfolded again, the user only needs to press the operation button of the second locking member, which, in conjunction with the second locking part 2121, causes the second locking part 2121 to overcome the elastic force of the second locking elastic part 2122 and disengage from the first locking groove 2131, thus releasing the folding lock. The frame can then be pulled out normally, and the first locking part 2123 will align and engage with the first locking hole 2111, restoring the unfolded state for use.

[0107] It is understood that the second snap-fit ​​elastic part 2122 is not limited to a compression spring, but may also be a torsion spring, leaf spring, elastic rubber body or other elastic element with the ability to recover deformation. As long as it can apply a stable biasing force to the second snap-fit ​​part 2121, making it have the tendency to move automatically into the first snap-fit ​​groove 2131, it is within the protection scope of this application.

[0108] like Figure 9 and Figure 10As shown, in some embodiments, the end of the first frame connector 211 away from the second frame connector 213 is also provided with a second snap-fit ​​hole 2125. By moving the first frame connector 211, the first snap-fit ​​part 2123 is moved to the position corresponding to the second snap-fit ​​hole 2125. The first snap-fit ​​part 2123 can also selectively snap into or out of the second snap-fit ​​hole 2125, so that the folding frame 200 is in a laterally retracted state.

[0109] In these embodiments, to further optimize the structural integration and achieve dual-position locking function, the first frame connector 211 is also provided with a second snap-fit ​​hole 2125 at the end away from the second frame connector 213 (i.e., the end near the outer side of the frame or the retracted limit position).

[0110] When the user pushes the folding frame 200 from the unfolded state to the fully folded position, the first frame connector 211 slides relative to the second frame connector 213, causing the second locking hole 2125 on it to move to a position aligned with the first locking part 2123. At this time, under the elastic restoring force of the first locking elastic part 2124, the first locking part 2123 can not only disengage from the first locking hole 2111, but also automatically engage with the second locking hole 2125, thereby reliably locking the folding frame 200 in the laterally retracted state.

[0111] Thus, the first locking member 212 achieves a dual-state locking function by engaging with two locking holes at different positions through a single first locking part 2123.

[0112] The number of locking mechanisms and operating logic have been significantly simplified. Whether unfolding or retracting, users only need to perform a push-pull action, and the system will automatically lock at both ends without the need to switch locking modes. At the same time, since both unfolding and retracting are achieved through the same elastically driven latching part, the locking feel is consistent and the reliability is high.

[0113] When it is necessary to switch from the folded state to the unfolded state, the user only needs to press the operation button of the first locking member 212, so that the first locking part 2123 overcomes the elastic force of the first locking elastic part 2124 and disengages from the second locking hole 2125. Then, by pulling the frame outward, the first locking part 2123 will slide past the middle non-locking area during the sliding process, and finally automatically engage with the first locking hole 2111 at the end of the unfolding, completing the state switch.

[0114] It is understandable that the shape and size of the second latching hole 2125 may be the same as or different from the first latching hole 2111, and its position is precisely set according to the closing stroke. In addition, to prevent the first latching part 2123 from accidentally getting stuck in the middle position, a guide slope or avoidance groove can be provided in the area between the two latching holes to ensure smooth sliding.

[0115] like Figure 9 and Figure 10 As shown, in some embodiments, the frame lateral retraction assembly 210 further includes a pusher 214, which is disposed on the first frame connector 211. The pusher 214 is located between the first snap-fit ​​hole 2111 and the second snap-fit ​​hole 2125. The pusher 214 moves with the first frame connector 211, and when it passes the position corresponding to the second snap-fit ​​part 2121, it can push against the second snap-fit ​​part 2121 and form a force that causes the second snap-fit ​​part 2121 to disengage from the first snap-fit ​​groove 2131.

[0116] In these embodiments, the retraction lock is automatically released to avoid requiring the user to operate the second locking mechanism before unfolding the frame.

[0117] The push-back member 214 is fixedly mounted on the first frame connector 211, and its mounting position on the first frame connector 211 is between the first locking hole 2111 and the second locking hole 2125. In this embodiment, the push-back member 214 is a protruding push block or a beveled lever to ensure reliable contact with the second locking part 2121 during the sliding of the frame.

[0118] When the user pulls the frame outward from its laterally retracted state to unfold, the first frame connector 211 drives the pusher 214 to move synchronously. Initially, the first latching portion 2123 is located in the second latching hole 2125, while the second latching portion 2121 is embedded in the first latching groove 2131. As the first frame connector 211 continues to slide outward, the pusher 214 passes the position corresponding to the second latching portion 2121, and its front inclined surface or pushing surface contacts the force-bearing end of the second latching portion 2121, applying a force that overcomes the elastic force of the second latching elastic portion 2122, forcing the second latching portion 2121 to exit from the first latching groove 2131.

[0119] Once the second latching part 2121 is pushed open by the pusher 214, the backup lock in the folded state is released, and the first frame connector 211 can continue to slide freely until it reaches the end position of the unfolding. At this time, the first latching part 2123 automatically engages with the first latching hole 2111 under the action of the first latching elastic part 2124, completing the unfolding lock.

[0120] The entire process requires no user identification or operation of the second locking component, greatly simplifying the usage steps. It is especially suitable for one-handed operation or emergency deployment scenarios, while retaining high security in the folded state (double locking), balancing safety and convenience.

[0121] like Figure 11 and Figure 12As shown, in some embodiments, this application also provides a folding stroller 10, which includes a folding frame 200, a side-folding seat 100, and a connecting assembly 300.

[0122] The connection assembly 300 includes at least one plug-in 320 and at least one plug-in adapter 310, one of the plug-in 320 and the plug-in adapter 310 being disposed on the folding frame 200 and the other being disposed on the side-folding seat 100; The connector 320 includes a connector portion 321, and the connector adapter 310 has a slot 311. The connector portion 321 is operable to move into or out of at least one of the slots 311 of the connector adapter 310, so that the folding frame 200 and the side-folding seat 100 can switch between a connected state and a disconnected state. The side-folding seat 100 includes two seat side frames 110 and a seat side-folding assembly 120. The two seat side frames 110 are spaced apart along the width direction of the side-folding seat 100. The side-folding seat 100 is folded or unfolded by the seat side-folding assembly 120, which causes the two seat side frames 110 to move closer or further apart, so that the side-folding seat 100 switches between a side-folded state and a side-folded state.

[0123] Some embodiments of this application provide a folding stroller 10, which includes a folding frame 200, a side-folding seat 100, and a connecting assembly 300.

[0124] The connecting component 300 enables quick assembly and disassembly between the folding frame 200 and the side-folding seat 100. The connecting component 300 includes at least one connector 320 and at least one connector adapter 310. One of the connector 320 and the connector adapter 310 is disposed on the folding frame 200, and the other is correspondingly disposed on the side-folding seat 100. In this embodiment, the connector 320 is fixed to the crossbeam of the folding frame 200, and the connector adapter 310 is mounted on the bottom connecting lug of the side-folding seat 100; however, in other embodiments, the connector 320 can be disposed on the seat, and the connector adapter 310 can be disposed on the frame, with equivalent functionality.

[0125] The connector 320 includes a connector portion 321, and the connector adapter 310 has a matching slot 311. The user can manually move the connector portion 321 into or out of the slot 311, thereby switching the folding frame 200 and the side-folding seat 100 between connected and disconnected states. This connection method is simple in structure, easy to operate, and can be combined with subsequent anti-detachment and limiting mechanisms to achieve a highly reliable connection.

[0126] Furthermore, the side-folding seat 100 itself also has a folding function to further reduce its storage volume. Specifically, the side-folding seat 100 includes two seat side frames 110 and a seat side-folding assembly 120. The two seat side frames 110 are spaced apart along the width direction (i.e., the left-right direction) of the side-folding seat 100, and each seat side frame 110 includes conventional components such as a seat cushion support rod, a backrest connecting rod, and armrests.

[0127] The seat lateral folding assembly 120 is connected between the two seat side frames 110 and is used to drive their relative movement. When the seat lateral folding assembly 120 is operated, the two seat side frames 110 can be moved closer or further apart, thereby switching the laterally folding seat 100 between a laterally unfolded state and a laterally retracted state. This lateral folding method coordinates with the lateral folding action of the folding frame 200, allowing both the main unit and the seat to be laterally compressed, significantly improving portability.

[0128] It is understood that the seat side folding assembly 120 may adopt any known side folding mechanism such as a slide rail slider, hinged link, elastic buckle or pull rope linkage, as long as it can reliably unfold and fold the two seat side frames 110, it is within the protection scope of this application.

[0129] Furthermore, since the seat and frame are connected by an independent connecting component 300, the folding operation of the seat and the folding operation of the frame do not interfere with each other. Users can fold the seat or frame separately or both at the same time according to their actual needs, making it extremely flexible to use.

[0130] like Figure 11 and Figure 12 As shown, in some embodiments, the seat side frame 110 includes a seat body portion 112 and a backrest portion 111, the backrest portion 111 being able to move closer to or further away from the seat body portion 112 to switch between a folded state and an unfolded state of the seat side frame 110. At least one seat side bracket 110 abuts or latches with the seat side folding assembly 120, so that the seat side bracket 110 restricts the seat side folding assembly 120 from folding; When the seat side frame 110 is folded, the seat side folding assembly 120 disengages from the seat side frame 110, causing the two seat side frames 110 to move closer or further apart, so that the side folding seat 100 switches between a side unfolded state and a side retracted state.

[0131] In these embodiments, to further enhance riding comfort and compact storage, the seat back 111 is connected to the seat body 112 via a hinge shaft or sliding linkage mechanism, and can move forward (fold) or backward (unfold) relative to the seat body 112, thereby allowing the individual seat side frame 110 to switch between its folded and unfolded states.

[0132] More importantly, at least one seat side bracket 110 (e.g., the left seat side bracket 110) is provided with a mechanical interlock structure with the seat side folding assembly 120. Specifically, when the seat side bracket 110 is in the unfolded state, the limiting protrusion provided on its backrest 111 or connecting bracket will abut or engage with the locking slider or guide rail body in the seat side folding assembly 120, thereby physically restricting the sliding or rotation of the seat side folding assembly 120, preventing it from initiating the side folding action.

[0133] Only after the user folds the seat side frame 110 (i.e., the seat back 111 flips forward to fit against the seat body 112) will the limiting protrusion disengage from the seat side folding assembly 120 or release its latch. At this time, the seat side folding assembly 120 is released, allowing the two seat side frames 110 to move closer to each other along the width direction, so that the entire side-folding seat 100 enters the side-retracted state. Conversely, when unfolding the seat in the side-retracted state, the side unfolding must be completed first, and then the seat back 111 must be erected to avoid structural interference.

[0134] For example, in this embodiment, the seat side folding assembly 120 includes a pair of cross links and a central sliding latch. When the seat back 111 is in the unfolded position, the limiting protrusion extending from its bottom engages in the blocking groove of the sliding latch, preventing it from moving laterally. When the seat back 111 is folded forward, the limiting protrusion rotates and disengages from the blocking groove, allowing the sliding latch to slide freely and triggering the closing of the side frames.

[0135] like Figure 11 and Figure 12 As shown, in some embodiments, the seat lateral folding assembly 120 includes a first lateral folding seat connector 121 and a second lateral folding seat connector 122. The first lateral folding seat connector 121 is rotatably mounted on one seat side frame 110, and the second lateral folding seat connector 122 is rotatably mounted on another seat side frame 110. The first lateral folding seat connector 121 and the second lateral folding seat connector 122 are rotatably connected to each other. By rotating the first lateral folding seat connector 121 and the second lateral folding seat connector 122 relative to each other, the two seat side frames 110 are moved closer or further apart, allowing the lateral folding seat 100 to switch between a laterally unfolded state and a laterally retracted state.

[0136] In these embodiments, the first lateral folding seat connector 121 is rotatably mounted on one of the seat side frames 110, specifically through a pin, rivet, or integrally formed hinge lug; correspondingly, the second lateral folding seat connector 122 is rotatably mounted on the other seat side frame 110.

[0137] The key is that the first lateral folding seat connector 121 and the second lateral folding seat connector 122 are rotatably connected to each other in the middle position, for example, by a central pivot to cross-hing the two, forming a linkage structure similar to a scissor arm or an X-shaped linkage.

[0138] When the user applies external force to bring the two seat side frames 110 closer together, the first side folding seat connector 121 and the second side folding seat connector 122 rotate relative to each other around their respective mounting points and central pivots, and their included angle gradually decreases, thereby driving the entire side folding seat 100 to switch from the side unfolded state (the two seat side frames 110 are at their maximum distance for normal use) to the side retracted state (the two seat side frames 110 are close together, the volume is the smallest, and it is easy to store); the reverse operation will unfold the seat.

[0139] In this embodiment, the rotational connection between the first lateral folding seat connector 121 and the second lateral folding seat connector 122 may also integrate the aforementioned interlocking limiting protrusion or a blocking surface linked thereto, so as to achieve coordinated control with the state of the seat back 111. The cross linkage is only allowed to rotate when the seat back 111 is folded into place, thereby ensuring the safety of the operation sequence.

[0140] It is understood that the number of the first side-folding seat connector 121 and the second side-folding seat connector 122 can be one or more sets (such as two sets arranged side by side to enhance rigidity), and their shape can be a straight rod, a bent arm or a plate-like structure with reinforcing ribs. As long as they can drive the two seat side frames 110 to move closer or further apart through relative rotation, they are all within the protection scope of this application.

[0141] like Figure 11 and Figure 12 As shown, in some embodiments, at least one of the first lateral folding seat connector 121 and the second lateral folding seat connector 122 is provided with a first limiting part 1221. In the lateral unfolded state, the first lateral folding seat connector 121 and the second lateral folding seat connector 122 abut against each other through the first limiting part 1221, and the first limiting part 1221 abuts against the seat side frame 110 to prevent rotation toward the bottom of the lateral folding seat 100.

[0142] And / or, the first limiting part 1221 and the seat side frame 110 abut against each other to prevent them from rotating toward the bottom of the side-folding seat 100.

[0143] In these embodiments, to ensure that the lateral folding seat 100 has sufficient structural rigidity and stability in the lateral unfolded state, and to prevent the seat side frame 110 from accidentally retracting inward or the connector from excessively folding down due to external forces, at least one of the first lateral folding seat connector 121 and the second lateral folding seat connector 122 is provided with a first limiting part 1221.

[0144] In this embodiment, the first limiting part 1221 is a boss structure formed in the middle of the first lateral folding seat connector 121, or it can be a reinforcing rib, a stop block, or a bent edge, so that when the lateral folding seat 100 is fully unfolded, the following two limiting actions can be achieved simultaneously: On the one hand, the corresponding part of the first limiting part 1221 and the second lateral folding seat connector 122 (such as its inner side or another protrusion) abut against each other to form a rigid support between the connectors, preventing them from continuing to open outward or collapse inward, thereby keeping the two seat side frames 110 stably at the maximum unfolding distance.

[0145] On the other hand, the first limiting part 1221 also abuts against the adjacent seat side frame 110 (e.g., the bottom beam or cross brace of the seat body 112) to prevent the first lateral folding seat connector 121 (or the second connector) from continuing to rotate towards the bottom of the lateral folding seat 100 (i.e., preventing it from flipping downwards beyond the designed angle). This limiting effectively prevents the connector from swinging downwards due to gravity or impact when a child is riding or when the vehicle is bumpy, which could cause the seat to sink, become unstable, or even fail in a localized manner.

[0146] The combined effect of the aforementioned dual limiting mechanisms enables the lateral folding seat 100 to form a stable triangular support or quadrilateral rigid frame in the unfolded state, significantly improving its resistance to lateral forces and torsional rigidity.

[0147] It is understood that the first limiting part 1221 may be provided on the first connector, the second connector, or both; its shape is not limited to a boss, but may also be a groove with protrusions, a flat contact surface, an elastic buffer pad, etc. As long as "mutual limitation between connectors" and / or "mutual limitation between connectors and side frame" can be achieved in the lateral unfolded position to prevent unintended rotation towards the bottom of the seat, it falls within the protection scope of this application.

[0148] like Figure 11 and Figure 12 As shown, in some embodiments, the seat side frame 110 includes a seat body 112 and a backrest 111. The backrest 111 is rotatably disposed on the seat body 112 and can rotate relative to the seat body 112 to switch between a flip-folded state and a flip-unfolded state.

[0149] The first lateral folding seat connector 121 is rotatably mounted on the seat portion 112 of one seat side frame 110, and the second lateral folding seat connector 122 is rotatably mounted on the seat portion 112 of another seat side frame 110. The backrest portion 111 has a second limiting portion 1111. When the seat side frame 110 is in the flipped-out state and the lateral folding seat 100 is in the lateral unfolded state, the second limiting portion 1111 abuts against at least one of the first lateral folding seat connector 121 and the second lateral folding seat connector 122 to limit its rotation away from the bottom of the lateral folding seat 100.

[0150] In these embodiments, the seat back 111 is rotatably mounted on the seat body 112 via a hinge axis. The user can rotate the seat back 111 forward or backward to switch between a folded state (backrest flat for easy storage) and a unfolded state (backrest upright for children to sit on) relative to the seat body 112.

[0151] The key feature is that the first lateral folding seat connector 121 is rotatably mounted on the seat body portion 112 of one of the seat side frames 110, and the second lateral folding seat connector 122 is rotatably mounted on the seat body portion 112 of the other seat side frame 110. This arrangement ensures that the motion reference of the lateral folding assembly is always based on the seat body portion 112, and is not affected by changes in the posture of the seat back portion 111, thus guaranteeing the reliability of the folding action.

[0152] Furthermore, in this embodiment, the second limiting part 1111 is a lug or stop block formed on the inner side of the lower end of the seat back part 111, such that when the seat side frame 110 is in a flipped-out state (e.g., the seat back part 111 is upright) and the side-folding seat 100 is in a side-folding state (the distance between the two seat side frames 110 is at its maximum), the second limiting part 1111 just abuts against and limits the upper edge of the first side-folding seat connector 121 and / or the second side-folding seat connector 122.

[0153] The function of this stop is to prevent the first lateral folding seat connector 121 and / or the second lateral folding seat connector 122 from rotating away from the bottom of the lateral folding seat 100 (i.e., to prevent them from flipping upwards or tilting up). In actual use, when a child leans against the backrest or the vehicle encounters bumps, the seat back 111 will transfer some of the load to the connector. Without this stop, the connector may rotate upwards around its hinge point with the seat body 112, causing the seat to become loose, make abnormal noises, or even fail structurally. However, through the rigid blocking of the second stop 1111, the connector is firmly constrained within the horizontal or slightly tilted working angle range, ensuring structural rigidity and seating stability in the unfolded state.

[0154] It is worth noting that when the seat back 111 is folded forward to the flip-folded state, the second limiting part 1111 rotates and disengages from the connecting member, no longer imposing a restriction on it, thereby allowing the lateral folding assembly to move freely to achieve lateral folding of the seat.

[0155] It is understood that the second limiting part 1111 can be provided on one or both sides of the seat part 111, and its shape can be a boss, a hook, a flat stop, or a composite structure with a buffer pad. The mating surface on the connector can also be provided with grooves or bevels to optimize the contact performance. As long as the upward rotation of the connector can be effectively restricted in the double unfolded state, it falls within the protection scope of this application.

[0156] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0157] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0158] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A folding stroller, characterized in that, The folding stroller (10) includes a folding frame (200), a side-folding seat (100), and a connecting assembly (300). The connection assembly (300) includes at least one plug (320) and at least one plug adapter (310), one of which is disposed on the folding frame (200) and the other is disposed on the side-folding seat (100). The connector (320) includes a connector portion (321), and the connector adapter (310) has a slot (311). The connector portion (321) is operable to move into or out of the slot (311) of at least one of the connector adapters (310), so that the folding frame (200) and the side-folding seat (100) can switch between a connected state and a disconnected state. In the connected state, the connector (320) and the connector adapter (310) form a limiting engagement to restrict relative rotation between the side-folding seat (100) and the folding frame (200).

2. The folding stroller according to claim 1, characterized in that, The connecting assembly (300) further includes an anti-disengagement component, one of the plug-in component (320) and the plug-in adapter (310) is provided with the anti-disengagement component, and the other is provided with an anti-disengagement hole (313). The anti-disengagement component includes a movable anti-disengagement part (322). In the connected state, the anti-disengagement part (322) can be selectively moved into the anti-disengagement hole (313) to prevent the plug-in component (321) from disengaging from the slot (311).

3. The folding stroller according to claim 2, characterized in that, The connection assembly (300) further includes a drive member disposed on one of the plug-in member (320) and the plug-in adapter (310), the drive member comprising: The squeezing part (312) is movably configured to push against the anti-detachment part (322) and to generate a force that causes the anti-detachment part (322) to disengage from the anti-detachment hole (313).

4. The folding stroller according to any one of claims 1 to 3, characterized in that, There are at least a plurality of the plug-in adapters (310) and the plugs (320), and they are distributed circumferentially along the side-folding seat (100). Each plug (320) can selectively adapt to different plug-in adapters (310) so that the side-folding seat (100) can be connected to the folding frame (200) in at least two different orientations.

5. The folding stroller according to claim 1, characterized in that, The insertion direction of the insertion part (321) is parallel to the longitudinal section of the folding stroller (10); And / or, the slot (311) has an opening and a bottom that are oppositely positioned, the opening being positioned toward the bottom of the folding stroller (10).

6. The folding stroller according to claim 1, characterized in that, The folding frame (200) includes: Two frame side frames are spaced apart along the width direction of the folding frame (200); and The frame side-folding assembly (210) includes a first frame connector (211), a second frame connector (213), and a first locking member (212). Along the width direction of the folding frame (200), the first frame connector (211) is connected to one of the frame side frames, and the second frame connector (213) is connected to the other frame side frame. The first frame connector (211) and the second frame connector (213) are slidably connected to each other, so that the folding frame (200) can switch between a side-expanded state and a side-folded state. One of the first frame connector (211) and the second frame connector (213) is provided with the first locking member (212), and the first locking member (212) can lock the other at least in the side-expanded state.

7. The folding stroller according to claim 6, characterized in that, The first locking member (212) is disposed on the second frame connector (213), and the first frame connector (211) is provided with a first snap-fit ​​hole (2111). The first locking member (212) includes a movable first locking part (2123). When the first frame connector (211) moves and drives the first locking part (2123) to the position corresponding to the first locking hole (2111), the first locking part (2123) can selectively engage or disengage from the first locking hole (2111). When the first snap-fit ​​part (2123) snaps into the first snap-fit ​​hole (2111), it restricts the relative sliding between the first frame connector (211) and the second frame connector (213), so that the folding frame (200) is in a lateral unfolded state.

8. The folding stroller according to claim 7, characterized in that, The second frame connector (213) has a first snap-fit ​​groove (2131). The frame lateral retraction assembly (210) includes a second locking member disposed on the second frame connector (213). The second locking member includes a movable second snap-fit ​​portion (2121). When the first snap-fit ​​portion (2123) disengages from the first snap-fit ​​hole (2111), the second snap-fit ​​portion (2121) is elastically biased and can selectively move into the first snap-fit ​​groove (2131), preventing the first snap-fit ​​portion (2123) from moving toward the first snap-fit ​​hole (2111).

9. The folding stroller according to claim 8, characterized in that, The first frame connector (211) is provided with a second snap-fit ​​hole (2125) at the end away from the second frame connector (213). When the first frame connector (211) moves, the first snap-fit ​​part (2123) moves to the position corresponding to the second snap-fit ​​hole (2125). The first snap-fit ​​part (2123) can also selectively snap into or out of the second snap-fit ​​hole (2125), so that the folding frame (200) is in a lateral retracted state.

10. The folding stroller according to claim 9, characterized in that, The frame side retraction assembly (210) also includes a push member (214), which is disposed on the first frame connector (211). The push member (214) is located between the first snap-fit ​​hole (2111) and the second snap-fit ​​hole (2125). The push member (214) moves with the first frame connector (211), and when it passes the position corresponding to the second snap-fit ​​part (2121), it can push against the second snap-fit ​​part (2121) and form a force that causes the second snap-fit ​​part (2121) to disengage from the first snap-fit ​​groove (2131).

11. A folding stroller, characterized in that, The folding stroller (10) includes a folding frame (200), a side-folding seat (100), and a connecting assembly (300). The connection assembly (300) includes at least one plug (320) and at least one plug adapter (310), one of which is disposed on the folding frame (200) and the other is disposed on the side-folding seat (100). The connector (320) includes a connector (321), and the connector adapter (310) is formed with a slot (311). The connector (321) is operable to move into or out of the slot (311) of at least one of the connector adapters (310), so that the folding frame (200) and the side-folding seat (100) can switch between a connected state and a disconnected state. The side-folding seat (100) includes two seat side frames (110) and a seat side-folding assembly (120). The two seat side frames (110) are spaced apart along the width direction of the side-folding seat (100). The side-folding seat (100) is folded or unfolded by the seat side-folding assembly (120), which causes the two seat side frames (110) to move closer or further away from each other, so that the side-folding seat (100) switches between a side-folded state and a side-folded state.

12. The folding stroller according to claim 11, characterized in that, The seat side frame (110) includes a seat body (112) and a backrest (111). The backrest (111) can move closer to or further away from the seat body (112) to switch between a folded state and an unfolded state. At least one of the seat side brackets (110) abuts or latches with the seat side folding assembly (120) to restrict the folding of the seat side folding assembly (120); When the seat side frame (110) is folded, the seat side folding assembly (120) disengages from the seat side frame (110) and causes the two seat side frames (110) to move closer or further apart, so that the side-folding seat (100) switches between a side-expanded state and a side-retracted state.

13. The folding stroller according to claim 11 or 12, characterized in that, The seat side folding assembly (120) includes a first side folding seat connector (121) and a second side folding seat connector (122). The first side folding seat connector (121) is rotatably mounted on one of the seat side frames (110), and the second side folding seat connector (122) is rotatably mounted on another of the seat side frames (110). The first side folding seat connector (121) and the second side folding seat connector (122) are rotatably connected to each other. By rotating the first lateral folding seat connector (121) and the second lateral folding seat connector (122) relative to each other, the two seat side frames (110) are driven to move closer or further apart, so that the lateral folding seat (100) switches between a lateral unfolded state and a lateral retracted state.

14. The folding stroller according to claim 13, characterized in that, At least one of the first lateral folding seat connector (121) and the second lateral folding seat connector (122) is provided with a first limiting part (1221), in the lateral unfolded state: The first side-folding seat connector (121) and the second side-folding seat connector (122) are mutually abutted and limited by the first limiting part (1221). The first limiting part (1221) and the seat side frame (110) abut and limit each other to prevent rotation toward the bottom of the side-folding seat (100). And / or, the first limiting part (1221) and the seat side frame (110) abut and limit each other to prevent them from rotating toward the bottom of the lateral folding seat (100).

15. The folding stroller according to claim 14, characterized in that, The seat side frame (110) includes a seat body (112) and a backrest (111). The backrest (111) is rotatably disposed on the seat body (112). The backrest (111) can rotate relative to the seat body (112) to switch between a flipped-fold state and a flipped-unfold state. The first lateral folding seat connector (121) is rotatably disposed on the seat body portion (112) of one of the seat side frames (110), the second lateral folding seat connector (122) is rotatably disposed on the seat body portion (112) of another of the seat side frames (110), and the backrest portion (111) has a second limiting portion (1111). When the seat side frame (110) is in the flip-up state and the side-folding seat (100) is in the side-folding state, the second limiting part (1111) abuts against and limits at least one of the first side-folding seat connector (121) and the second side-folding seat connector (122) to prevent it from rotating away from the bottom of the side-folding seat (100).

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