Foldable baby carriage

Abstract

The utility model belongs to the technical field of baby carriages, and particularly relates to a folding type baby carriage. Comprising a first frame assembly, a second frame assembly hinged to the first frame assembly, a third frame assembly hinged to the second frame assembly and an unlocking mechanism used for limiting or releasing limiting of folding of the first frame assembly or the third frame assembly relative to the second frame assembly. The linkage mechanism is connected with the third frame assembly and the first frame assembly and used for driving the third frame assembly and the first frame assembly to be folded in the direction close to the second frame assembly. The folding operation of the baby carriage is simplified, in addition, folding can be completed under the condition that the whole baby carriage is not lifted only by using a lever mode to upwarp the first carriage frame assembly with the second carriage frame assembly as a fulcrum, the problem that in the prior art, folding operation of a baby carriage is inconvenient and tedious is solved, and the baby carriage is more convenient and labor-saving to fold.

Description

[Technical Field]

[0001] This application belongs to the field of children's vehicle technology, specifically relating to a folding children's vehicle. [Background Technology]

[0002] Currently, most children's strollers on the market are designed to be foldable for easy storage and transportation. However, the folding operation of these strollers is cumbersome. In existing folding vehicle designs, the folding and unfolding mechanisms of the main frame and the third frame component are usually quite complex and inconvenient to operate. For example, after unlocking, the handlebars and the body need to be folded separately, or even the entire body needs to be lifted up to complete the folding. This requires users to spend a lot of time and effort to complete the folding or unfolding operation. [Utility Model Content]

[0003] To address the inconvenience and cumbersome folding operation of existing strollers, this application provides a foldable stroller.

[0004] This application is achieved through the following technical solution:

[0005] A folding stroller includes a first frame assembly, a second frame assembly hinged to the first frame assembly, a third frame assembly hinged to the second frame assembly, a release mechanism for restricting or releasing the folding of the first frame assembly or the third frame assembly relative to the second frame assembly, and a linkage mechanism connecting the third frame assembly and the first frame assembly and for driving both to fold towards the second frame assembly.

[0006] The linkage mechanism includes a first link hinged to the third frame assembly, a second link hinged to the first frame assembly, and a connector hinged to the first link and the second link respectively. The second frame assembly has a groove for the connector to be inserted and slid.

[0007] As described above, in a folding stroller, the locking mechanism includes an operating component disposed on the third frame assembly, a locking member disposed inside the third frame assembly with one end protruding outward from the third frame assembly and the other end connected to the operating component via a linkage, and a limiting slot disposed on the second frame assembly for the locking member to engage with, wherein a second elastic member is provided between the locking member and the third frame assembly;

[0008] The release member remains engaged with the limiting slot under the elastic force of the second elastic member, restricting the third frame assembly from folding relative to the second frame assembly; when the operating component is driven, the release member is pulled away from the limiting slot by the linkage to release the restriction on the third frame assembly from folding relative to the second frame assembly.

[0009] As described above, in a folding stroller, a first through hole for a pin to pass through is provided at the hinge point between the first connecting rod and the third frame assembly, and a second through hole for a pin to pass through is provided at the hinge point between the second connecting rod and the first frame assembly. When the third frame assembly is folded relative to the second frame assembly, the first connecting rod drives the connecting member to move along the slide groove toward the first frame assembly, while the second connecting rod drives the first frame assembly, thereby causing the first frame assembly to fold relative to the second frame assembly.

[0010] In the folding stroller described above, the hinge joints between the third frame assembly and the second frame assembly, and the hinge joint between the first connecting rod and the third frame assembly, are staggered; the hinge joints between the first frame assembly and the second frame assembly, and the hinge joint between the second connecting rod and the first frame assembly, are also staggered.

[0011] As described above, in a folding stroller, the second frame assembly has an inwardly recessed concave arc surface, and the first frame assembly has a convex arc surface that mates with the concave arc surface. The bottom of the concave arc surface has a boss, and the bottom of the convex arc surface has a flange for the boss to abut against in order to restrict the first frame assembly from folding upward relative to the second frame assembly.

[0012] As described above, in a folding stroller, the third frame assembly near the end of the second frame assembly and the first frame assembly near the end of the second frame assembly are respectively provided with interlayer spaces for the first connecting rod and the second connecting rod to be embedded.

[0013] As described above, in a folding stroller, the inner wall of the second frame assembly is provided with a first limiting groove corresponding to the rotation arc of the first through hole. When the third frame assembly is folded relative to the second frame assembly, it drives the pin passing through the first through hole to slide along the first limiting groove, so that the first connecting rod pushes the connecting piece to move along the slide groove towards the first frame assembly, while the second connecting rod pushes the first frame assembly.

[0014] And / or,

[0015] The inner wall of the second frame assembly is provided with a second limiting groove corresponding to the rotation arc of the second through hole. When the third frame assembly is folded relative to the second frame assembly, it drives the first connecting rod to push the connecting piece to move along the slide groove towards the first frame assembly. At the same time, the second connecting rod pushes the first frame assembly, thereby driving the pin passing through the second through hole to slide along the second limiting groove.

[0016] In the folding stroller described above, the second through hole is a slot, which includes an unfolded position and a folded position. When the third frame assembly is folded relative to the second frame assembly, the second connecting rod pushes the pin passing through the second through hole from the unfolded position to the folded position, so that the first frame assembly is folded relative to the second frame assembly.

[0017] In one type of folding stroller as described above, the first frame assembly and the third frame assembly are hinged to the second frame assembly in a staggered manner.

[0018] As described above, in a folding stroller, a pin is provided at the hinge point between the first connecting rod and the third frame assembly, and a pin is provided at the hinge point between the second connecting rod and the first frame assembly. When the third frame assembly is folded relative to the second frame assembly, the first connecting rod pushes the connecting piece to move along the slide groove toward the first frame assembly, while the second connecting rod drives the first frame assembly, thereby causing the first frame assembly to fold relative to the second frame assembly.

[0019] Compared with the prior art, this application has the following advantages:

[0020] This application discloses a folding stroller that connects a second frame assembly and a third frame assembly via a release mechanism. This mechanism restricts or releases the folding of the third frame assembly relative to the main frame body. Furthermore, a linkage mechanism connecting the third frame assembly and the first frame assembly enables the folding of the first frame assembly while simultaneously folding the third frame assembly. This simplifies the folding operation of the stroller. Moreover, by simply using a lever to lift the first frame assembly with the second frame assembly as a fulcrum, folding can be completed without lifting the entire stroller. This solves the problem of inconvenient and cumbersome folding operations in existing stroller technologies, making the stroller more convenient and effortless to fold. [Attached Image Description]

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional perspective view of an embodiment of this application;

[0023] Figure 2 yes Figure 1 Exploded view of the third frame assembly;

[0024] Figure 3 yes Figure 1 Local decomposition view Figure 1 ;

[0025] Figure 4 yes Figure 1 Local decomposition view Figure 2 ;

[0026] Figure 5 yes Figure 3 A magnified view of a portion of the view;

[0027] Figure 6 yes Figure 4 A magnified view of a portion of the document;

[0028] Figure 7 This is an unfolded schematic diagram of an embodiment of this application;

[0029] Figure 8 yes Figure 7 A schematic diagram of the central linkage mechanism;

[0030] Figure 9 This is a bottom view of the linkage mechanism in the embodiments of this application;

[0031] Figure 10 This is a schematic diagram of a partial folding of an embodiment of this application;

[0032] Figure 11 yes Figure 10 A schematic diagram of the central linkage mechanism;

[0033] Figure 12 This is a schematic diagram of the folding of an embodiment of this application;

[0034] Figure 13 yes Figure 12 A schematic diagram of the central linkage mechanism.

Detailed Implementation Methods

[0035] To make the technical problems solved by this application, the technical solutions, and the beneficial effects clearer, this application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0036] Please see Figures 1 to 13 A folding stroller includes a first frame assembly 1, a second frame assembly 2 hinged to the first frame assembly 1, a third frame assembly 3 hinged to the second frame assembly 2, a release mechanism 4 for restricting or releasing the folding of the first frame assembly 1 or the third frame assembly 3 relative to the second frame assembly 2, and a linkage mechanism 5 for connecting the third frame assembly 3 and the first frame assembly 1 and for driving both to fold towards the second frame assembly 2;

[0037] The linkage mechanism 5 includes a first link 51 hinged to the third frame assembly 3, a second link 52 hinged to the first frame assembly 1, and a connector 53 hinged to the first link 51 and the second link 52 respectively. The second frame assembly 2 is provided with a groove 54 for the connector 53 to be inserted and slid.

[0038] This application discloses a folding stroller that connects a second frame assembly and a third frame assembly via a release mechanism. This mechanism restricts or releases the folding of the third frame assembly relative to the main frame body. Furthermore, a linkage mechanism connecting the third frame assembly and the first frame assembly enables the folding of the first frame assembly while simultaneously folding the third frame assembly. This simplifies the folding operation of the stroller. Moreover, by simply using a lever to lift the first frame assembly with the second frame assembly as a fulcrum, folding can be completed without lifting the entire stroller. This solves the problem of inconvenient and cumbersome folding operations in existing stroller technologies, making the stroller more convenient and effortless to fold.

[0039] In this embodiment, the folding of the third frame assembly 3 and the first frame assembly 1 is achieved through the coordinated action of the first link 51, the second link 52, and the connector 53, significantly improving the folding efficiency and convenience of the stroller. Specifically, when the third frame assembly 3 begins to fold, the first link 51, which is hinged to it, rotates accordingly and transmits the motion to the second link 52 through the connector 53, thereby causing the first frame assembly 1 to move synchronously towards the second frame assembly 2. The sliding of the connector 53 in the slide groove 54 ensures the smoothness and precision of the entire linkage process, avoiding interference or jamming between components. This design not only simplifies the user's operation steps and improves ease of use, but also enhances the structural stability through the guiding effect of the connector 53 in the slide groove 54, making the stroller more reliable during folding and unfolding. In other possible embodiments, to further optimize the linkage effect and meet different design requirements, the components of the linkage mechanism 5 can be adjusted, such as changing the length or angle of the connecting rod to adjust the folding amplitude and speed, or using connectors 53 and slides 54 with different materials and surface treatments to improve sliding performance and durability. These flexible design options enable the linkage mechanism 5 to adapt to various children's stroller products and provide efficient and stable folding functions.

[0040] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the unlocking mechanism 4 includes an operating component 40 disposed on the third frame assembly 3, an unlocking component 43 disposed inside the third frame assembly 3 with one end protruding outward from the third frame assembly 3 and the other end connected to the operating component 40 via a linkage, and a limiting slot 44 disposed on the second frame assembly 2 for the unlocking component 43 to engage with, and a second elastic member 46 is provided between the unlocking component 43 and the third frame assembly 3;

[0041] The release member 43 remains engaged with the limiting slot 44 under the elastic force of the second elastic member 46, restricting the third frame assembly 3 from folding relative to the second frame assembly 2; when the operating component 40 is driven, the release member 43 is pulled away from the limiting slot 44 by the linkage to release the restriction on the third frame assembly 3 from folding relative to the second frame assembly 2.

[0042] In this embodiment, the folding and unfolding of the third frame assembly 3 relative to the second frame assembly 2 are restricted and released. This design is not only easy to operate, but also ensures reliable engagement between the release mechanism 43 and the limiting latch 44 through the setting of elastic elements, thereby improving the safety of the stroller. In addition, the release mechanism 4 has a compact structure and occupies little space, which is conducive to the lightweight design of the stroller.

[0043] Furthermore, as a preferred embodiment of this solution and not a limitation, a first through hole 511 for a pin to pass through is provided at the hinge point between the first connecting rod 51 and the third frame assembly 3, and a second through hole 521 for a pin to pass through is provided at the hinge point between the second connecting rod 52 and the first frame assembly 1. When the third frame assembly 3 is folded relative to the second frame assembly 2, the first connecting rod 51 drives the connecting member 53 to move along the slide groove 54 toward the direction closer to the first frame assembly 1, while the second connecting rod 52 drives the first frame assembly 1, thereby causing the first frame assembly 1 to fold relative to the second frame assembly 2.

[0044] In this embodiment, a first through hole 511 is provided at the hinge point between the first connecting rod 51 and the third frame assembly 3, and a first limiting groove 512 with a specific rotational arc is provided at a corresponding position on the inner wall of the second frame assembly 2. Simultaneously, a second through hole 521 is provided at the hinge point between the second connecting rod 52 and the first frame assembly 1, and a second limiting groove 522 with a specific rotational arc is provided at a corresponding position on the inner wall of the second frame assembly 2. This design provides precise guidance and limiting functions for the linkage mechanism 5. When the third frame assembly 3 folds, the pin passes through the first through hole 511 and slides along the first limiting groove 512, ensuring that the rotation trajectory of the first connecting rod 51 is precisely controlled, thereby accurately transmitting the movement to the second connecting rod 52 through the connecting member 53. Similarly, the pin passes through the second through hole 521 and slides along the second limiting groove 522, ensuring that the rotation trajectory of the second connecting rod 52 is coordinated with that of the first connecting rod 51, achieving synchronous folding of the first frame assembly 1 and the third frame assembly 3. This design not only ensures the stability and reliability of the linkage mechanism 5 during operation through precise guidance, avoiding asynchronous folding or jamming caused by excessive freedom of components, but also limits the rotation range of the linkage through the design of the limiting groove, preventing component damage or safety hazards caused by excessive folding or unfolding, thereby improving the durability and safety of the stroller.

[0045] Furthermore, as a preferred embodiment of this solution and not a limitation, the hinge joints between the third frame assembly 3 and the second frame assembly 2, and the hinge joint between the first connecting rod 51 and the third frame assembly 3 are staggered; the hinge joints between the first frame assembly 1 and the second frame assembly 2, and the hinge joint between the second connecting rod 52 and the first frame assembly 1 are staggered.

[0046] In this embodiment, by staggering the hinges between the third frame assembly 3 and the second frame assembly 2, and between the first link 51 and the third frame assembly 3, and similarly staggering the hinges between the first frame assembly 1 and the second frame assembly 2, and between the second link 52 and the first frame assembly 1, this layout provides significant space optimization and motion coordination for the stroller's folding process. Specifically, the staggered arrangement allows for smoother, non-interfering relative movement of the components during folding, avoiding collisions or jamming caused by overly concentrated hinge points. Furthermore, this design helps reduce the stroller's size after folding, improving its portability.

[0047] Furthermore, as a preferred embodiment of this solution and not a limitation, the second frame assembly 2 is provided with an inwardly recessed concave arc surface 21, and the first frame assembly 1 is provided with a forward convex arc surface 11 that cooperates with the concave arc surface 21. The bottom of the concave arc surface 21 is provided with a boss 22, and the bottom of the forward convex arc surface 11 is provided with a flange 12 for the boss 22 to abut against in order to restrict the first frame assembly 1 from folding upward relative to the second frame assembly 2.

[0048] In this embodiment, by providing a boss 22 at the bottom of the concave arc surface 21 and a flange 12 that mates with the boss 22 at the bottom of the convex arc surface 11, multiple protections and precise control are provided for the folding and unfolding process of the stroller. When the stroller is in the unfolded state, the engagement of the boss 22 and the flange 12 restricts the upward folding of the first frame assembly 1 relative to the second frame assembly 2, ensuring the stability and safety of the stroller. When the stroller needs to be folded, the second link 52 pushes the pin from the unfolded position 5211 to the folded position 5212. That is, the third frame assembly first folds down a certain angle relative to the second frame assembly, and then simultaneously drives the first frame assembly to fold down relative to the second frame assembly. This provides more operating space for the folding of the first frame assembly, making the entire folding process smoother and reducing the risk of jamming or interference.

[0049] Furthermore, as a preferred embodiment of this solution and not a limitation, when the third frame assembly 3 is folded relative to the second frame assembly 2, the second connecting rod 52 pushes the pin passing through the second through hole 521 from the unfolded position 5211 to the folded position 5212, so that the first frame assembly 1 is folded relative to the second frame assembly 2.

[0050] In this embodiment, when the user initiates the folding of the third frame assembly 3, the first frame assembly 1 automatically begins to fold through the linkage of the second link 52. This eliminates the need for the user to operate multiple components separately, simplifying the folding process and improving ease of use. Simultaneously, this linkage design ensures the coordination and consistency of the folding process, preventing component collisions or jamming caused by asynchronous operations. Furthermore, by providing an unfolding position 5211 and a folding position 5212 in the second through hole 521, the folding state of the first frame assembly 1 is precisely controlled, ensuring the structural stability of the stroller when unfolded and preventing the risk of accidental folding.

[0051] Furthermore, as a preferred embodiment of this solution and not a limitation, the third frame assembly 3 and the first frame assembly 1 are respectively provided with interlayer spaces 6 for the first connecting rod 51 and the second connecting rod 52 to be embedded in.

[0052] In this embodiment, by embedding the first link 51 and the second link 52 into the interlayer space 6, not only is the internal space of the stroller effectively utilized and the overall volume reduced, but the components of the linkage mechanism can also be arranged more compactly, avoiding collisions or entanglements caused by exposed links. Furthermore, it improves the neatness of the stroller's appearance and enhances the stability and durability of the structure. The interlayer space 6 also provides precise guidance for the movement of the first link 51 and the second link 52. When the third frame assembly 3 and the first frame assembly 1 are folded, the movement trajectory of the first link 51 and the second link 52 in the interlayer space 6 is strictly limited, avoiding deviation or jamming, thereby improving the smoothness of the folding operation and the user experience.

[0053] Furthermore, as a preferred embodiment of this solution and not a limitation, the inner wall of the second frame assembly 2 is provided with a first limiting groove 512 corresponding to the rotational arc of the first through hole 511. When the third frame assembly 3 is folded relative to the second frame assembly 2, it drives the pin passing through the first through hole 511 to slide along the first limiting groove 512, so that the first connecting rod 51 pushes the connecting piece 53 to move along the slide groove 54 towards the first frame assembly 1, while the second connecting rod 52 pushes the first frame assembly 1.

[0054] And / or,

[0055] The inner wall of the second frame assembly 2 is provided with a second limiting groove 522 corresponding to the rotation arc of the second through hole 521. When the third frame assembly 3 is folded relative to the second frame assembly 2, it drives the first connecting rod 51 to push the connecting piece 53 to move along the slide groove 54 towards the first frame assembly 1. At the same time, the second connecting rod 52 pushes the first frame assembly 1, thereby driving the pin passing through the second through hole 521 to slide along the second limiting groove 522.

[0056] Furthermore, as a preferred embodiment of this solution and not a limitation, the second through hole 521 is a slot, which includes an unfolded position 5211 and a folded position 5212. When the third frame assembly 3 is folded relative to the second frame assembly 2, the second connecting rod 52 pushes the pin passing through the second through hole 521 from the unfolded position 5211 to the folded position 5212, so that the first frame assembly 1 is folded relative to the second frame assembly 2.

[0057] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the first frame assembly 1 and the third frame assembly 3 are hinged to the second frame assembly 2 in a staggered manner.

[0058] In this embodiment, as a preferred implementation rather than a limitation of the solution, the first frame assembly 1 is a front body assembly, the second frame assembly is a rear body assembly, and the third frame assembly is a handlebar assembly; or the first frame assembly 1 is a rear body assembly, the second frame assembly is a front body assembly, and the third frame assembly is a handlebar assembly.

[0059] Furthermore, as a preferred embodiment of this solution and not a limitation, a pin is provided at the hinge point between the first connecting rod 51 and the third frame assembly 3, and a pin is provided at the hinge point between the second connecting rod 52 and the first frame assembly 1. When the third frame assembly 3 is folded relative to the second frame assembly 2, the first connecting rod 51 pushes the connecting member 53 to move along the slide groove 54 towards the first frame assembly 1, while the second connecting rod 52 drives the first frame assembly 1, thereby causing the first frame assembly 1 to fold relative to the second frame assembly 2.

[0060] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the operating component 40 includes a pressing block 41, a slider 42 disposed within the third frame assembly 3 and abutting against the pressing block 41 along an inclined surface, and a first elastic member 45 disposed between the sliders 42.

[0061] The working principle of this embodiment is as follows:

[0062] This application discloses a folding stroller that connects a second frame assembly and a third frame assembly via a release mechanism. This mechanism restricts or releases the folding of the third frame assembly relative to the main frame body. Furthermore, a linkage mechanism connecting the third frame assembly and the first frame assembly enables the folding of the first frame assembly while simultaneously folding the third frame assembly. This simplifies the folding operation of the stroller. Moreover, by simply using a lever to lift the first frame assembly with the second frame assembly as a fulcrum, folding can be completed without lifting the entire stroller. This solves the problem of inconvenient and cumbersome folding operations in existing stroller technologies, making the stroller more convenient and effortless to fold.

[0063] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A folding stroller, characterized in that, It includes a first frame assembly (1), a second frame assembly (2) hinged to the first frame assembly (1), a third frame assembly (3) hinged to the second frame assembly (2), a release mechanism (4) for restricting or releasing the folding of the first frame assembly (1) or the third frame assembly (3) relative to the second frame assembly (2), and a linkage mechanism (5) connecting the third frame assembly (3) and the first frame assembly (1) and for driving both to fold toward the second frame assembly (2). The linkage mechanism (5) includes a first link (51) hinged to the third frame assembly (3), a second link (52) hinged to the first frame assembly (1), and a connector (53) hinged to the first link (51) and the second link (52) respectively. The second frame assembly (2) is provided with a groove (54) for the connector (53) to be inserted and slid.

2. A folding stroller according to claim 1, characterized in that, The release mechanism (4) includes an operating component (40) disposed on the third frame assembly (3), a release component (43) disposed inside the third frame assembly (3) with one end protruding outward from the third frame assembly (3) and the other end connected to the operating component (40) via a linkage component, and a limiting slot (44) disposed on the second frame assembly (2) for the release component (43) to engage. A second elastic element (46) is provided between the release component (43) and the third frame assembly (3). The release member (43) remains engaged with the limiting slot (44) under the elastic force of the second elastic member (46), restricting the third frame assembly (3) from folding relative to the second frame assembly (2); when the operating component (40) is driven, the release member (43) is pulled away from the limiting slot (44) by the linkage to release the restriction on the third frame assembly (3) from folding relative to the second frame assembly (2).

3. A folding stroller according to claim 1, characterized in that, The first connecting rod (51) is provided with a first through hole (511) through which the pin passes at the hinge point between the first connecting rod (51) and the third frame assembly (3), and the second connecting rod (52) is provided with a second through hole (521) through which the pin passes at the hinge point between the second connecting rod (52) and the first frame assembly (1). When the third frame assembly (3) is folded relative to the second frame assembly (2), the first connecting rod (51) drives the connecting piece (53) to move along the slide groove (54) toward the direction of the first frame assembly (1), and at the same time the second connecting rod (52) drives the first frame assembly (1), thereby the first frame assembly (1) is folded relative to the second frame assembly (2).

4. A folding stroller according to claim 1, characterized in that, The hinge joints between the third frame assembly (3) and the second frame assembly (2), and the hinge joints between the first connecting rod (51) and the third frame assembly (3) are staggered; the hinge joints between the first frame assembly (1) and the second frame assembly (2), and the hinge joints between the second connecting rod (52) and the first frame assembly (1) are staggered.

5. A folding stroller according to claim 1, characterized in that, The second frame assembly (2) has an inwardly recessed concave arc surface (21), and the first frame assembly (1) has a convex arc surface (11) that cooperates with the concave arc surface (21). The bottom of the concave arc surface (21) has a boss (22), and the bottom of the convex arc surface (11) has a flange (12) for the boss (22) to abut against in order to restrict the first frame assembly (1) from folding upward relative to the second frame assembly (2).

6. A folding stroller according to claim 1, characterized in that, The third frame assembly (3) has a sandwich space (6) for the first link (51) and the second link (52) to be embedded in one end near the second frame assembly (2) and the first frame assembly (1) has a sandwich space (6) for the first link (51) and the second link (52) to be embedded in one end, respectively.

7. A folding stroller according to claim 3, characterized in that, The inner wall of the second frame assembly (2) is provided with a first limiting groove (512) corresponding to the rotation arc of the first through hole (511). When the third frame assembly (3) is folded relative to the second frame assembly (2), it drives the pin passing through the first through hole (511) to slide along the first limiting groove (512), so that the first connecting rod (51) pushes the connector (53) to move along the slide groove (54) towards the first frame assembly (1), while the second connecting rod (52) pushes the first frame assembly (1). And / or, The inner wall of the second frame assembly (2) is provided with a second limiting groove (522) corresponding to the rotation arc of the second through hole (521). When the third frame assembly (3) is folded relative to the second frame assembly (2), it drives the first connecting rod (51) to push the connector (53) along the slide groove (54) towards the first frame assembly (1). At the same time, the second connecting rod (52) pushes the first frame assembly (1), thereby driving the pin passing through the second through hole (521) to slide along the second limiting groove (522).

8. A folding stroller according to claim 3, characterized in that, The second through hole (521) is a slot, which includes an unfolded position (5211) and a folded position (5212). When the third frame assembly (3) is folded relative to the second frame assembly (2), the second link (52) pushes the pin passing through the second through hole (521) from the unfolded position (5211) to the folded position (5212), so that the first frame assembly (1) is folded relative to the second frame assembly (2).

9. A folding stroller according to claim 1, characterized in that, The first frame assembly (1) and the third frame assembly (3) are hinged to the second frame assembly (2) in a staggered manner.

10. A folding stroller according to claim 9, characterized in that, A pin is provided at the hinge point between the first link (51) and the third frame assembly (3), and a pin is provided at the hinge point between the second link (52) and the first frame assembly (1). When the third frame assembly (3) is folded relative to the second frame assembly (2), the first link (51) pushes the connector (53) to move along the slide (54) towards the first frame assembly (1), and at the same time the second link (52) drives the first frame assembly (1), thereby folding the first frame assembly (1) relative to the second frame assembly (2).

Images