A stroller with a linkage mechanism for folding the frame and the wheels

Abstract

This utility model discloses a stroller that facilitates the linkage between the carrier and the frame for folding. By configuring the frame joints so that the frame locking component can be unlocked by the folding action of the carrier body relative to the frame joints at any height adjustment position, the design of "folding can be linked at any height position" completely eliminates the conflict between height adjustment and folding operation. Users can freely adjust the height of the carrier body according to their needs, such as adjusting the carrier body to a high position for the baby to enjoy the view, or adjusting it to a low position for easy getting in and out of the stroller, without having to adjust the height when folding. Even if it is necessary to fold the stroller temporarily, the carrier body can be folded directly without additional height locking operation, significantly improving the flexibility and convenience of use. This meets the core needs of users for a "multi-functional and easy-to-operate" stroller and enhances the product's market competitiveness.

Description

[Technical Field]

[0001] This utility model relates to the field of children's travel products technology, and in particular to a stroller that is easy to fold and retract by linking the vehicle and the frame. [Background Technology]

[0002] As a core tool for infants and toddlers' travel, the ease of use of strollers directly impacts parents' caregiving experience. With the upgrading of market demand, strollers with foldable functions have become mainstream products, aiming to reduce storage space and facilitate portability through folding.

[0003] Traditional height-adjustable strollers typically achieve height adjustment between the carrier and frame via a carrier connector and a frame connector. These are connected by a height control mechanism (such as a pin-type lock, rack and pinion engagement, or ratchet limit structure), and multiple height adjustment levels (commonly 3-5 levels) are provided to meet different needs. To ensure stability while pushing the stroller, a locking component (such as a spring-loaded buckle, limit groove, or pin) is required between the carrier connector and the frame connector to prevent the stroller from sliding due to bumps. However, this design reveals the following core problem in actual use: when quick folding is needed (such as for carrying outdoors, avoiding obstacles, or sudden rain), the user must simultaneously complete multiple operations: "unlocking the carrier connector → adjusting the stroller to the lowest position → unlocking the frame body," which is complex and inconvenient.

[0004] In addition, there are still areas for improvement and problems in the folding operation of strollers in the existing technology:

[0005] I. Pain Points in the Folding Operation of Existing Strollers

[0006] Traditional strollers typically involve the independent unlocking and assembling of multiple components, making the process rather cumbersome. Taking a common foldable stroller as an example, its structure generally includes a frame (connected by joints via front and rear legs and a push handle), the main body (such as a seat and storage basket), and a connector assembly linking the two. To ensure stability in the unfolded state, the frame and connector assembly usually have independent locking mechanisms.

[0007] Frame locking: The frame joints (the rotating nodes connecting the front and rear legs and the push rod) must be secured by frame locking components (such as buckles, pins, or ratchet structures) to prevent accidental folding; when folding, the unlocking device of the frame locking components must be manually operated (such as pressing a button, moving the latch, or pulling the handle) to release the lock between the links.

[0008] Vehicle connection and unlocking: The vehicle is connected to the frame joint via a frame connector. To prevent the vehicle from shaking or falling off during pushing, a connector locking component (such as a spring clip or a limiting groove) is usually provided between the frame connector and the frame. When folding the vehicle, the connector locking component must be manually released first so that the vehicle can be separated from the frame or rotated relative to it.

[0009] The aforementioned design requires users to complete multiple steps sequentially when folding the stroller: "unlocking the frame locking components → releasing the connector locking components → adjusting the angle between the frame and the vehicle → finally folding it up." This is especially problematic for parents with infants or toddlers, who need to simultaneously care for the child and operate the stroller. Unlocking in multiple steps can easily lead to omissions (for example, forcibly folding the stroller before fully releasing the frame connector lock may cause parts to jam or be damaged), or the unfamiliarity with the operating sequence may prolong the folding time, thus reducing the user experience.

[0010] II. Attempts to Improve Existing Technologies and Their Limitations

[0011] To simplify the folding process, some existing technologies attempt to reduce operational steps through structural optimization. For example, some strollers integrate the frame locking assembly and connector locking assembly into the same unlocking handle, allowing the user to release both locks simultaneously with a single press; or they utilize a linkage mechanism to transmit the frame folding action to the connector, achieving partial unlocking linkage. However, such improvements still have the following shortcomings:

[0012] The triggering source relies on manual intervention: the unlocking action still requires the user to operate actively (such as pressing the handle or pulling the ring), and does not make full use of the mechanical movement of the vehicle itself as the triggering force. The user still needs to remember and perform additional operation steps.

[0013] Incomplete linkage logic: Some solutions only achieve one-way linkage between the chassis and the connector (such as unlocking the connector when the chassis is folded), but do not use the vehicle folding action to trigger chassis unlocking in reverse, so vehicle folding and chassis unlocking still need to be operated in stages.

[0014] High structural complexity: In order to achieve linkage, additional components such as transmission linkage and return spring are required, which not only increases the weight and manufacturing cost of the stroller, but may also lead to an increased failure rate due to component redundancy (such as linkage jamming and spring failure), affecting reliability.

[0015] Therefore, this utility model was developed to address the aforementioned problems. [Utility Model Content]

[0016] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a stroller that facilitates the linkage between the carrier and the frame for folding. By configuring the frame joints so that the frame locking component can be unlocked by the folding action of the carrier body when the carrier body is in any height adjustment position relative to the frame joints, the design of "folding can be linked at any height position" completely eliminates the conflict between height adjustment and folding operation. Users can freely adjust the height of the carrier body according to their needs, such as adjusting the carrier body to a high position for the baby to see the scenery, or adjusting it to a low position for easy getting in and out of the stroller, without having to adjust the height when folding the stroller. Even if it is necessary to fold the stroller temporarily, the carrier body can be folded directly without additional height locking operation, which significantly improves the flexibility and convenience of use, meets the core needs of users for a "multi-functional and easy-to-operate" stroller, and enhances the product's market competitiveness.

[0017] To solve the above-mentioned technical problems, this utility model provides a stroller that facilitates the linkage and folding of the carrier and frame, comprising:

[0018] The frame body has the function of unfolding and folding. The frame body includes a front leg, a rear leg, and a push rod. The upper ends of the front leg, the upper ends of the rear leg, and the lower ends of the push rod are rotatably connected through the frame joints. The frame joints are connected to the frame connectors.

[0019] The frame locking assembly is located on the frame joint and is used to lock the main body of the frame in the unfolded use state.

[0020] The vehicle body has unfolding and folding functions, and the vehicle body is equipped with a vehicle connector, which connects the vehicle body to the frame connector.

[0021] The vehicle body has multiple height adjustment positions relative to the frame joint, and the frame joint can be unlocked by the vehicle body folding action when the vehicle body is in any height adjustment position relative to the frame joint.

[0022] As shown above, for a stroller that facilitates the linkage between the vehicle and the frame for folding, the frame connector can be unlocked and rotatably connected to the frame joint, and the vehicle connector is relatively fixedly connected to the vehicle body. During the folding process of the vehicle body, the frame connector can be linked to unlock relative to the frame joint. The vehicle body and the vehicle connector rotate together with the frame connector relative to the frame joint to a preset angle, thereby unlocking the frame locking component.

[0023] The above-mentioned stroller, which facilitates the linkage between the vehicle and the frame for folding, has multiple height adjustment positions between the vehicle connector and the frame connector. When the vehicle connector is in any height adjustment position relative to the frame connector, the frame locking component can be unlocked by rotating the entire vehicle body to a preset angle.

[0024] The above-mentioned stroller facilitates the linkage between the vehicle and the frame for folding. The frame connector is fixedly connected to the frame joint, and the vehicle connector can be unlocked and rotatably connected to the vehicle body. During the folding process of the vehicle body, the vehicle connector can be unlocked relative to the vehicle body. The vehicle body rotates relative to the vehicle connector and the frame connector to a preset angle, thereby unlocking the frame locking component.

[0025] The above-mentioned stroller, which facilitates the linkage between the carrier and the frame for folding, has multiple height adjustment positions between the main body of the carrier and the carrier connector. When the main body of the carrier is in any height adjustment position relative to the carrier connector, the frame locking component can be unlocked by rotating the entire main body of the carrier to a preset angle.

[0026] As described above, a children's stroller that facilitates the linkage between the vehicle and the frame for folding is provided. A connector locking component is provided between the frame connector and the frame joint to lock the frame connector relative to the frame joint. A frame unlocking component is provided on the frame connector and is linked to the frame locking component. A connector unlocking component is provided between the vehicle body and the frame connector and is linked to the connector locking component. The connector unlocking component is configured to be linked by the folding action of the vehicle body. When the frame connector rotates to a preset angle relative to the frame joint, it triggers the frame unlocking component to move, thereby linking the frame locking component to release the locking state for folding.

[0027] The above-mentioned stroller, which facilitates the linkage between the carrier and the frame for folding, has a lifting control mechanism between the carrier body and the frame joints, allowing the carrier body to be adjusted to multiple positions relative to the frame joints.

[0028] As described above, for a stroller that facilitates the linkage between the carrier and the frame for folding, the lifting control mechanism is located between the carrier connector and the frame connector, and includes a lifting control lock, a lifting control lock element, and a lifting control operation group. A plurality of lifting control locks are arranged vertically and intermittently on the frame connector, the lifting control lock element is slidably arranged on the carrier connector and used to lock with the corresponding lifting control lock, and the lifting control operation group is movably arranged on the carrier connector and is linked with the lifting control lock element.

[0029] The above-mentioned stroller, which facilitates the linkage between the vehicle and the frame for folding and raising, includes a control operation group comprising a control operation linkage seat and a control operation lever. The control operation linkage seat is vertically slidably mounted on the vehicle connector and is linked with the lifting control lock. The control operation lever is vertically slidably mounted on the vehicle connector and is linked with the control operation linkage seat.

[0030] As described above, for a stroller that facilitates the linkage between the vehicle and the frame for folding, the connector unlocking assembly includes a connector unlocking pusher, a connector unlocking linkage group, and a connector unlocking component. The connector unlocking pusher is slidably mounted on the vehicle connector and is linked by the folding action of the vehicle body. Both the connector unlocking linkage group and the connector unlocking component are movably mounted on the frame connector. The connector unlocking pusher is linked with the connector unlocking component through the connector unlocking linkage group, and the connector unlocking component is linked with the connector locking assembly.

[0031] The above-mentioned stroller, which facilitates the linkage between the vehicle and the frame for folding and unfolding, includes a connector unlocking linkage assembly comprising a connector unlocking linkage component one, a connector unlocking linkage component two, and a connector unlocking linkage inclined part. The connector unlocking linkage component one is slidably mounted on the frame connector and is linked with the connector unlocking push component. The connector unlocking linkage component two is slidably mounted on the frame connector. The connector unlocking linkage inclined part is respectively mounted on the connector unlocking linkage component one and the connector unlocking linkage component two and can cooperate with each other. The connector unlocking linkage component two is linked with the connector unlocking component one.

[0032] As described above, for a stroller that facilitates the linkage between the vehicle and the frame for folding, the connector locking assembly includes connector locking grooves respectively located on opposite sides of the frame connector and the frame joint, and a connector locking gear slidably located between the frame connector and the frame joint and capable of simultaneously engaging with the connector locking grooves on both the frame connector and the frame joint. A connector locking elastic element is provided between the connector locking gear and the frame joint for driving the connector locking gear to elastically reset. The connector locking gear and the connector unlocking element are linked together.

[0033] The above-mentioned stroller, which facilitates the linkage and folding of the vehicle and frame, includes a frame joint comprising a front leg joint block located at the upper end of the front leg post, a rear leg joint block located at the upper end of the rear leg post, and a push rod joint block located at the lower end of the push rod. The front leg joint block and the push rod joint block are rotatably connected to the rear leg joint block. A joint linkage component is provided between the front leg joint block and the push rod joint block. The front end of the joint linkage component is rotatably connected to the front leg joint block, and the rear end of the joint linkage component is rotatably connected to the push rod joint block. The frame connector is rotatably connected to the rear leg joint block. The frame locking assembly is located between the front leg joint block, the rear leg joint block, and the push rod joint block.

[0034] As described above, a stroller that facilitates the linkage between the vehicle and the frame for folding and unfolding includes a frame locking assembly comprising a frame locking part disposed on the front leg joint block and / or the push rod joint block, and a frame locking member slidably disposed on the rear leg joint block for locking engagement with the frame locking part, wherein a frame locking elastic member is provided between the frame locking member and the rear leg joint block; and a frame unlocking assembly comprising a frame unlocking member disposed on the frame connector and linked to the frame locking member.

[0035] As described above, a stroller that facilitates the linkage between the vehicle and frame for folding has a vehicle body with a forward-facing installation state and a reverse-facing installation state. The frame unlocking component includes a forward-facing frame unlocking component and a reverse-facing frame unlocking component mounted on the frame connector. A switching linkage component is provided between the frame connector and the vehicle connector to switch the working states of the forward-facing and reverse-facing frame unlocking components. When the vehicle body is in the forward-facing installation state, the switching linkage component switches the forward-facing and reverse-facing frame unlocking components to a state where the forward-facing frame unlocking component is linked with the frame locking component, and the linkage between the reverse-facing frame unlocking component and the frame locking component is released. When the vehicle body is in the reverse-facing installation state, the switching linkage component switches the forward-facing and reverse-facing frame unlocking components to a state where the reverse-facing frame unlocking component is linked with the frame locking component, and the linkage between the forward-facing frame unlocking component and the frame locking component is released.

[0036] The above-mentioned stroller, which facilitates the linkage between the carrier and the frame for folding, has a main body that is a seat frame, including a seat and a backrest. The rear end of the seat is fixedly connected to the carrier connector, and the lower end of the backrest is rotatably connected to the carrier connector directly or indirectly. A backrest locking mechanism is provided between the backrest and the carrier connector to lock the backrest relative to the carrier connector. A backrest unlocking mechanism is provided on the backrest to be linked with the backrest locking mechanism. The connector unlocking component is configured to trigger the linkage when the backrest is flipped and folded relative to the carrier connector to a preset angle, thereby triggering the connector locking component to release the locking state.

[0037] The above-mentioned stroller, which facilitates the folding and retraction of the carrier and frame, has a main carrier that is a bassinet, including:

[0038] A tube assembly, comprising a front tube and a rear tube that can be folded in opposite directions or unfolded in opposite directions, the front tube and the rear tube being rotatably connected.

[0039] The support component has unfolding and folding functions;

[0040] The bassinet linkage component is located between the enclosure component and the load-bearing component.

[0041] The coaxial tube joint is located between the front coaxial tube and the rear coaxial tube and is used to lock the front coaxial tube relative to the rear coaxial tube.

[0042] The enclosure unlocking mechanism is located on the front enclosure or the rear enclosure and is linked to the enclosure joint to release the locking state of the front enclosure relative to the rear enclosure.

[0043] The vehicle connector is located on the enclosure assembly or the load-bearing assembly;

[0044] The connector unlocking component is configured to trigger a linkage when the current or rear enclosure tube is flipped and folded to a preset angle, thereby triggering the connector locking component to release the locking state.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. This utility model, by configuring the frame joints so that the frame locking component can be unlocked by the folding action of the vehicle body when the main body is in any height adjustment position relative to the frame joints, completely eliminates the conflict between height adjustment and folding operation through the design of "folding the vehicle at any height position": users can freely adjust the height of the main body according to their needs, such as adjusting the main body to a high position for the baby to see the scenery, or adjusting it to a low position for easy getting in and out of the vehicle, without having to adjust the height when folding the vehicle; even if it is temporarily necessary to fold the vehicle, the main body can be folded directly without additional height locking operation, which significantly improves the flexibility and convenience of use, meets the core needs of users for "multifunctional and easy-to-operate" children's vehicles, and enhances the market competitiveness of the product.

[0047] 2. This utility model uses the folding action of the vehicle body as the trigger source: During the folding process of the vehicle body, the folding action of the vehicle body triggers the connector unlocking component to release the locking state of the connector locking component, that is, to release the locking state of the frame connector relative to the frame joint; subsequently, the frame connector rotates relative to the frame joint to a preset angle under the overall movement of the folded vehicle body, further triggering the frame unlocking component to release the locking state of the frame locking component, that is, to release the locking state of the frame body, thus realizing a seamless operation of "vehicle body folding → frame connector unlocking → frame body unlocking → overall folding". Therefore, the user only needs to complete the core action of folding the vehicle body to automatically trigger all subsequent unlocking steps, significantly reducing operation steps, improving ease of use, and realizing the function of folding the vehicle in one step and operating with one hand.

[0048] 3. This utility model, through the linkage of the connector locking component and the connector unlocking component, as well as the linkage of the frame locking component and the frame unlocking component, ensures that the frame unlocking component is only triggered after the vehicle body is folded into place and the frame connector is rotated to a preset angle relative to the frame joint. This effectively prevents the frame body from being folded in advance, which could cause hand pinching or structural interference, improves safety, and reduces the risk of misoperation.

[0049] 4. To ensure efficient and convenient retraction and extension, the front foot joint block and the push rod joint block are linked by a joint linkage component.

[0050] 5. The frame connector and the vehicle connector described in this utility model are provided with a switching linkage component for switching the working state of the forward and reverse frame unlocking components. Through this "install-and-fit" automated design, the user only needs to adjust the direction of the vehicle body without additional operation of the unlocking components, which greatly simplifies the multi-directional installation process and effectively solves the problems of cumbersome folding and high risk of misoperation caused by manual adjustment of the unlocking logic in traditional children's vehicles. This provides users with a more efficient, safe, and worry-free children's vehicle experience. [Attached Image Description]

[0051] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0052] Figure 1 This is a perspective view of the mounting bracket of this utility model when it is installed facing forward. Figure 2 This is a perspective view of the frame of this utility model when it is installed with the rear facing direction. Figure 3 This is a side view of the present invention when the mounting frame is installed facing rearward and in the unfolded use state. Figure 4 This is one of the side views of the stroller in the folding process of this utility model. Figure 5 This is the second side view of the stroller in the folding process of this utility model. Figure 6 This is the third side view of the stroller in the folding process of this utility model. Figure 7 This is a perspective view of the seat frame and the main body of the vehicle frame in this utility model when separated. Figure 8 This is one of the exploded views of the frame in this utility model. Figure 9 This is the second exploded view of the frame in this utility model. Figure 10 This is a partial perspective view of the backrest in this utility model. Figure 11 This is a perspective view of the carrier connector in this utility model. Figure 12 This is a structural diagram of the lifting control mechanism in this utility model. Figure 13 This is one of the perspective views of the frame connector in this utility model. Figure 14 This is the second perspective view of the frame connector in this utility model. Figure 15 This is a side view of the frame connector in this utility model. Figure 16 This is an exploded view of the connector unlocking component and the switching linkage component in this utility model. Figure 17 This is an exploded view of the connector unlocking component in this utility model. Figure 18 This is one of the perspective views of the frame joint in this utility model. Figure 19 This is the second perspective view of the frame joint in this utility model. Figure 20 This is the third perspective view of the frame joint in this utility model. Figure 21 This is the fourth perspective view of the frame joint in this utility model. Figure 22 This is the fifth perspective view of the frame joint in this utility model. Figure 23 This is one of the exploded views of the frame joint in this utility model. Figure 24 This is the second exploded view of the frame joint in this utility model. Figure 25 This is a perspective view of the sleeping basket connected to the main body of the vehicle frame in this utility model. Figure 26 This is one of the side views of the sleeping basket in this utility model, which is connected to the main body of the frame and is in the process of being folded up. Figure 27 This is the second side view of the sleeping basket in this utility model, which is connected to the main body of the frame and is in the process of being folded up. Figure 28 This is one of the perspective views of the sleeping basket in this utility model. Figure 29 This is the second perspective view of the sleeping basket in this utility model. Figure 30 This is one of the exploded views of the sleeping basket in this utility model. Figure 31 This is the second exploded view of the sleeping basket in this utility model.

Detailed Implementation Methods

[0053] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0054] like Figure 1-31 As shown, this utility model discloses a children's stroller that facilitates the linkage and folding of the carrier and frame, including a frame body 1, a frame locking assembly 20, and a carrier body 4. The frame body 1 has unfolding and folding functions, and includes a front leg 11, a rear leg 12, and a push rod 13. The upper ends of the front leg 11, the rear leg 12, and the push rod 13 are rotatably connected through a frame joint 2, and a frame connector 3 is connected to the frame joint 2. The frame locking assembly 20 is provided on the frame joint 2 and is used to lock the frame body 1 in the unfolded state. The carrier body 4 has unfolding and folding functions, and a carrier connector 41 is provided on the carrier body 4. The carrier body 4 is connected to the frame connector 3 through the carrier connector 41. The carrier body 4 has multiple height adjustment positions relative to the frame joint 2, and when the carrier body 4 is in any height adjustment position relative to the frame joint 2, the frame joint 2 can be unlocked by the folding action of the carrier body 4, which is linked to the frame locking assembly 20. This invention addresses the conflict between height adjustment and folding operations by configuring the frame joints so that the frame locking component can be unlocked when the main body of the stroller is folded down, regardless of the height adjustment position relative to the frame joints. This design, which allows for folding down at any height, completely eliminates the conflict between height adjustment and folding operations. Users can freely adjust the height of the main body as needed, such as raising it to a higher position for the baby to enjoy the view or lowering it for easier entry and exit, without needing to adjust the height when folding down. Even if folding down is temporarily necessary, the main body can be folded down directly without additional height locking, significantly improving the flexibility and convenience of use. This meets users' core needs for a "multi-functional and easy-to-operate" stroller and enhances the product's market competitiveness.

[0055] As one embodiment of this utility model, such as Figure 1-31 As shown, the frame connector 3 is rotatably connected to the frame joint 2, and the vehicle connector 41 is fixedly connected to the vehicle body 4. During the folding process of the vehicle body 4, the frame connector 3 can be unlocked relative to the frame joint 2. The vehicle body 4 and the vehicle connector 41 rotate as a whole relative to the frame joint 2 to a preset angle, thereby unlocking the frame locking component 20. Furthermore, multiple height adjustment positions are provided between the vehicle connector 41 and the frame connector 3. When the vehicle connector 41 is in any height adjustment position relative to the frame connector 3, the frame locking component 20 can be unlocked by rotating the vehicle body 4 as a whole to a preset angle. This embodiment upgrades the folding of the vehicle body and the unlocking of the frame body from "independent operation" to "causal linkage" through a closed-loop logic of "vehicle body folding action → frame connector linkage unlocking → preset angle triggering frame body unlocking". It realizes an intelligent design that "drives frame body unlocking with user's active folding intention", which not only simplifies the operation process and improves safety, but also enhances structural reliability by reducing redundant parts, reduces production and manufacturing costs, and enhances the market competitiveness of the product.

[0056] In another embodiment of this utility model, the frame connector 3 is fixedly connected to the frame joint 2, and the vehicle connector 41 is rotatably connected to the vehicle body 4 and can be unlocked. During the folding process of the vehicle body 4, the vehicle connector 41 can be unlocked relative to the vehicle body 4. The vehicle body 4 rotates as a whole relative to the vehicle connector 41 and the frame connector 3 to a preset angle, thereby unlocking the frame locking assembly 20. Multiple height adjustment positions are provided between the vehicle body 4 and the vehicle connector 41. When the vehicle body 4 is in any height adjustment position relative to the vehicle connector 41, the frame locking assembly 20 can be unlocked by rotating the vehicle body 4 as a whole to a preset angle.

[0057] like Figure 1-31As shown, a connector locking assembly 30 is provided between the frame connector 3 and the frame joint 2 for locking the frame connector 3 relative to the frame joint 2. A frame unlocking assembly 21 is provided on the frame connector 3 and is linked to the frame locking assembly 20. A connector unlocking assembly 31 is provided between the vehicle body 4 and the frame connector 3 and is linked to the connector locking assembly 30. The connector unlocking assembly 31 is configured to be linked by the folding action of the vehicle body 4. When the frame connector 3 rotates relative to the frame joint 2 to a preset angle, the frame unlocking assembly 21 is triggered to move, thereby linking the frame locking assembly 20 to release the locking state for vehicle retraction. This invention uses the folding action of the vehicle body as the trigger source: during the folding process, the folding action of the vehicle body triggers the connector unlocking component to release the locking state of the connector locking component, that is, to release the locking state of the frame connector relative to the frame joint; subsequently, the frame connector rotates relative to the frame joint to a preset angle under the overall movement of the folded vehicle body, further triggering the frame unlocking component to release the locking state of the frame locking component, that is, to release the locking state of the frame body. Ultimately, it achieves a seamless operation of "vehicle body folding → frame connector unlocking → frame body unlocking → overall folding". Therefore, the user only needs to complete the core action of folding the vehicle body to automatically trigger all subsequent unlocking steps, significantly reducing operation steps, improving ease of use, and realizing the function of folding the vehicle in one step and operating it with one hand.

[0058] like Figure 8 , 9 As shown in Figures 13 and 15, in order to facilitate adjustment and ensure reliable locking structure, a lifting control mechanism 5 is provided between the vehicle body 4 and the frame joint 2 so that the vehicle body 4 can be adjusted to multiple positions relative to the frame joint 2.

[0059] like Figure 8 , 9 As shown in Figures 12, 13, and 15, to ensure stable and reliable multi-level height adjustment and meet diverse usage needs, the lifting control mechanism 5 is located between the vehicle connector 41 and the frame connector 3. It includes a lifting control lock 51, a lifting control lock element 52, and a lifting control operation group 53. Multiple lifting control lock elements 51 are spaced vertically on the frame connector 3. The lifting control lock element 52 is slidably mounted on the vehicle connector 41 and used to lock in conjunction with the corresponding lifting control lock element 51. The lifting control operation group 53 is movably mounted on the vehicle connector 41 and is linked with the lifting control lock element 52. In this embodiment, the lifting control lock element 52 and the lifting control operation group 53 are integrated onto the vehicle connector, forming a modular component, reducing the need for additional installation space. This integrated design facilitates quick docking with the frame connector 3 while reducing the overall weight and volume of the mechanism.

[0060] like Figure 8 , 9As shown in Figures 12, 13, and 15, for convenient unlocking and adjustment, the lifting control operation group 53 includes a control operation linkage seat 531 and a control operation lever 532. The control operation linkage seat 531 is vertically slidable on the carrier connector 41 and is linked with the lifting control lock 52. The control operation lever 532 is vertically slidable on the carrier connector 41 and is linked with the control operation linkage seat 531. For easy reset, a linkage seat unlocking elastic element 533 is provided between the control operation linkage seat 531 and the carrier connector 41 to drive the control operation linkage seat 531 to elastically reset. For reliable linkage, the control operation linkage seat 531 has a strip-shaped unlocking oblique hole 5311, and a linkage shaft rod that is fixedly connected to the lifting control lock 52 passes through the strip-shaped unlocking oblique hole 5311. In this embodiment, the control operation linkage seat 531 and the control operation lever 532 are independent components with a relatively simple structure and clear division of functions: the control operation lever 532 is responsible for inputting the operating force, and the control operation linkage seat 531 is responsible for transmitting and converting the motion. This modular feature reduces maintenance costs and time.

[0061] During adjustment, the control lever 532 is pressed and slid vertically relative to the vehicle connector 41. The control lever 532 presses against the control operation linkage seat 531 and slides vertically accordingly. The corresponding inclined wall of the strip-shaped unlocking inclined hole 5311 drives the linkage rod to drive the lifting control lock 52 to slide horizontally accordingly, so that the locking end of the lifting control lock 52 separates from the lifting control lock part 51. Then, according to the usage requirements, the vehicle connector is adjusted to move up or down relative to the frame connector. When the desired position is reached, the pressing force on the control lever 532 is released. At this moment, the control operation linkage seat 531 slides upward and resets under the elastic force of the linkage seat unlocking elastic element 533. That is, the corresponding side wall of the strip-shaped unlocking inclined hole 5311 drives the linkage rod to drive the lifting control lock 52 to slide horizontally and reset accordingly, so that the locking end of the lifting control lock 52 is inserted into the lifting control lock part 51. This embodiment uses a rigid component for linkage unlocking, which effectively solves the problems of traditional unlocking methods such as laborious operation, easy jamming, inaccurate positioning, and poor adaptability. It features efficient force transmission, stability and reliability, accurate positioning, durability, and adaptability.

[0062] like Figure 8 , 9As shown in Figures 12, 13, and 15, the lifting control mechanism 5 also includes a safety control component 54 disposed between the vehicle connector 41 and the frame connector 3. The safety control component 54 is configured to prevent the vehicle connector 41 from separating from the frame connector 3 during the lifting adjustment process of the vehicle connector 41 relative to the frame connector 3, and is also configured to be linked to the unlocking action of the lifting control operation group 53. In this embodiment, the safety control component 54 ensures that the vehicle connector 41 and the frame connector 3 remain connected during the user's adjustment of the vehicle's lifting position, ensuring that the vehicle connector can only move up and down and cannot completely detach from the frame connector. This makes the adjustment operation convenient and ensures safety.

[0063] like Figure 8 , 9 As shown in Figures 12, 13, and 15, the safety control assembly 54 includes, but is not limited to, a safety blocking member 541 and a safety clearance notch 542 both located on the upper end of the frame connector 3, and a safety sliding member 543 slidably mounted on the vehicle connector and capable of coordinating with the lifting control operation group 53 to unlock. The safety sliding member 543 is provided with a safety blocking block 544 for blocking and engaging with the safety blocking member 541. The safety blocking block 544 is slidably mounted on the safety sliding member 543, and a blocking block elastic member 545 is provided between the safety blocking block 544 and the safety sliding member 543. The frame connector 3 is provided with a safety blocking protrusion 546 extending in the vertical direction, with the safety blocking member 541 and the safety clearance notch 542 located on opposite sides of the safety blocking protrusion 546. When it is necessary to detach the vehicle connector from the frame connector, the user presses the safety slider 543 to slide radially, which in turn causes the control operation linkage seat 531 to slide vertically accordingly. The corresponding inclined wall of the strip-shaped unlocking oblique hole 5311 drives the linkage shaft to drive the lifting control lock 52 to slide horizontally accordingly, so that the locking end of the lifting control lock 52 separates from the lifting control lock part 51. At the same time, the safety blocking block 544 slides with the safety slider 543, so that the safety blocking block 544 and the safety blocking part 541 are misaligned and cooperate with the safety clearance notch 542. Then the user operates the vehicle connector to slide upward relative to the frame connector until the vehicle body is detached from the frame body. The operation is convenient.

[0064] like Figure 8 , 12As shown, the safety blocking block 544 has a blocking end 5441 and a blocking slope 5442 for cooperating with the safety blocking protrusion 546. During the unlocking process, the blocking slope 5442 cooperates with the safety blocking protrusion 546 to force the safety blocking block 544 to retract accordingly for unlocking. When the safety blocking block 544 cooperates with the safety clearance notch 542, the blocking end 5441 cooperates with the safety blocking protrusion 546 to restrict the sliding reset of the safety slider 543. Therefore, the user does not need to press the safety slider continuously. That is, when the pressure on the safety slider 543 is released, the safety blocking block 544 always remains in cooperation with the safety clearance notch 542, which facilitates subsequent disassembly and is reasonably designed.

[0065] like Figure 8-10 As shown in Figures 16 and 17, for ease of operation and better linkage of the frame connector unlocking, the connector unlocking assembly 31 includes a connector unlocking pusher 311, a connector unlocking linkage group 312, and a connector unlocking component 313. The connector unlocking pusher 311 is slidably mounted on the vehicle connector 41 and is linked by the folding action of the vehicle body 4. Both the connector unlocking linkage group 312 and the connector unlocking component 313 are movably mounted on the frame connector 3. The connector unlocking pusher 311 is linked with the connector unlocking component 313 through the connector unlocking linkage group 312. The connector unlocking component 313 is linked with the connector locking assembly 30.

[0066] like Figure 8-10As shown in Figures 16 and 17, in order to efficiently change the direction of motion, simplify the transmission path, and improve transmission stability, the connector unlocking linkage group 312 includes a connector unlocking linkage component one 3121, a connector unlocking linkage component two 3122, and a connector unlocking linkage inclined part 3123. The connector unlocking linkage component one 3121 is slidably mounted on the frame connector 3 and is linked with the connector unlocking push component 311. The connector unlocking linkage component two 3122 is slidably mounted on the frame connector 3. The connector unlocking linkage inclined part 3123 is respectively mounted on the connector unlocking linkage component one 3121 and the connector unlocking linkage component two 3122 and can cooperate with each other. The connector unlocking linkage component two 3122 is linked with the connector unlocking component 313. When the main body of the vehicle is a seat frame and is being unlocked, the backrest 43 flips and folds forward relative to the seat 42. The connector unlocking drive part 310 on the lower end of the backrest 43 drives the connector unlocking pusher 311 to slide laterally relative to the vehicle connector 41. The push end of the connector unlocking pusher 311 presses against the first connector unlocking linkage part 3121 to slide laterally relative to the frame connector 3. The second connector unlocking linkage part 3122 slides vertically relative to the frame connector 3 under the cooperation of the two connector unlocking linkage inclined parts 3123. The second connector unlocking linkage part 3122 links the connector unlocking part 313 to slide laterally through the two mutually cooperating unlocking linkage inclined walls, so that the connector unlocking part 313 pushes the connector locking gear 302 to slide laterally, so that the connector locking gear 302 separates from the connector locking groove 301 on the frame connector 3, thereby releasing the locking state of the frame connector 3 relative to the frame joint.

[0067] like Figure 14-18 As shown, for reliable and stable locking, the connector locking assembly 30 includes connector locking grooves 301 respectively provided on opposite sides of the frame connector 3 and the frame joint 2, and a connector locking gear 302 slidably provided between the frame connector 3 and the frame joint 2 and capable of simultaneously engaging with the connector locking grooves 301 on the frame connector 3 and the frame joint 2. A connector locking elastic element is provided between the connector locking gear 302 and the frame joint 2 for driving the connector locking gear 302 to elastically reset; the connector locking gear 302 is linked with the connector unlocking element 313.

[0068] like Figure 18-24As shown, to ensure structural stability and ease of folding and unfolding, the frame joint 2 includes a front leg joint block 111 located at the upper end of the front leg bar 11, a rear leg joint block 121 located at the upper end of the rear leg bar 12, and a push rod joint block 131 located at the lower end of the push rod 13. The front leg joint block 111 and the push rod joint block 131 are rotatably connected to the rear leg joint block 121. A joint linkage 14 is provided between the front leg joint block 111 and the push rod joint block 131. The front end of the joint linkage 14 is rotatably connected to the front leg joint block 111, and the rear end of the joint linkage 14 is rotatably connected to the push rod joint block 131. The frame connector 3 is rotatably connected to the rear leg joint block 121. The frame locking assembly 20 is located between the front leg joint block 111, the rear leg joint block 121, and the push rod joint block 131.

[0069] like Figure 18-24 As shown, for reliable locking, the frame locking assembly 20 includes a frame locking part 201 disposed on the front leg joint block 111 and / or push rod joint block 131 and a frame locking member 202 slidably disposed on the rear leg joint block 121 and used for locking engagement with the frame locking part 201. A frame locking elastic member is provided between the frame locking member 202 and the rear leg joint block 121. The frame unlocking assembly 21 includes a frame unlocking member disposed on the frame connector 3 and linked with the frame locking member 202. When the frame connector 3 rotates to a preset angle relative to the rear foot joint block 121, the frame unlocking component, through the cooperation of the two unlocking linkage inclined walls, drives the frame locking component 202 to slide downward relative to the rear foot joint block 121, so that the locking end of the rear foot joint block 121 separates from the frame locking part 201. At this moment, the push rod 13, under its own weight or driven by external force, folds down and closes to the rear foot bar side. The push rod 13, through the joint linkage component 14, correspondingly links the front foot bar 11 to fold back and close to the rear foot bar side.

[0070] like Figure 1 , 2As shown in 11, 13-16, the vehicle body 4 has a forward installation state and a reverse installation state. The frame unlocking assembly 21 includes a forward frame unlocking component 211 and a reverse frame unlocking component 212 disposed on the frame connector 3. A switching linkage assembly 22 is provided between the frame connector 3 and the vehicle connector 41 to switch the working states of the forward frame unlocking component 211 and the reverse frame unlocking component 212. When the vehicle body 4 is in the forward installation state, the switching linkage assembly 22 unlocks the forward frame. When the main body 4 is in a reverse installation state, the linkage component 22 switches the forward frame unlocking component 211 and the reverse frame unlocking component 212 to be linked with the frame locking assembly 20, thus deactivating the linkage between the reverse frame unlocking component 212 and the frame locking assembly 20. This embodiment, through this "install-as-you-go" automated design, allows users to simply adjust the direction of the main body of the vehicle without additional operation of the unlocking components, significantly simplifying the multi-directional installation process. It effectively solves the problems of cumbersome folding and high risk of misoperation caused by manual adjustment of the unlocking logic in traditional children's strollers, providing users with a more efficient, safe, and worry-free stroller experience.

[0071] like Figure 1 , 2 As shown in 11, 13-16, the switching linkage assembly 22 includes, but is not limited to, a forward transmission member 221 that is vertically slidable on the frame connector 3 and used for linkage with the forward frame unlocking member 211, and a forward pressing member 222 that is horizontally slidable on the frame connector 3 and used for linkage with the forward transmission member 221. The switching linkage assembly 22 also includes, but is not limited to, a reverse transmission member 223 that is vertically slidable on the frame connector 3 and used for linkage with the reverse frame unlocking member 212, and a reverse pressing member 224 that is horizontally slidable on the frame connector 3 and used for linkage with the reverse transmission member 223. The switching linkage assembly 22 also includes, but is not limited to, a switching linkage drive unit 225 that is provided on the vehicle connector 41 and used for linkage with the forward pressing member 222 or the reverse pressing member 224. When the vehicle body 4 is in the forward-mounted state, the linkage drive unit 225 is switched to be linked with the reverse pressing member 224, causing the reverse frame unlocking member 212 to retract into the frame connector, thus releasing the linkage between the reverse frame unlocking member 212 and the frame locking member 202. When the vehicle body 4 is in the reverse-mounted state, the linkage drive unit 225 is switched to be linked with the forward pressing member 222, causing the forward frame unlocking member 211 to retract into the frame connector, thus releasing the linkage between the forward frame unlocking member 211 and the frame locking member 202.

[0072] like Figure 1-10As shown, in order to achieve linkage folding, the main body 4 of the carrier is a seat frame, including a seat part 42 and a backrest 43. The rear end of the seat part 42 is fixedly connected to the carrier connector 41. The lower end of the backrest 43 is directly or indirectly rotatably connected to the carrier connector 41. A backrest locking mechanism 431 is provided between the backrest 43 and the carrier connector 41 for locking the backrest 43 relative to the carrier connector 41. A backrest unlocking mechanism 432 is provided on the backrest 43 for linkage with the backrest locking mechanism 431. The connector unlocking component 31 is configured to trigger linkage when the backrest 43 is flipped and folded relative to the carrier connector 41 to a preset angle, thereby linkageing the connector locking component 30 to release the locking state.

[0073] like Figure 8 , 9 As shown, for reliable locking, the backrest locking mechanism 431 includes, but is not limited to, a backrest locking groove 4311 provided on the rear end of the carrier connector 41 or the seat portion 42, and a backrest locking block 4312 slidably provided on the lower end of the backrest 43 for locking engagement with the backrest locking groove 4311. A backrest locking elastic element is provided between the backrest locking block 4312 and the lower end of the backrest 43 for driving the backrest locking block 4312 to elastically reset. The backrest locking block 4312 is linked to the backrest unlocking mechanism 432. For convenient unlocking, the backrest unlocking mechanism 432 includes, but is not limited to, a backrest unlocking wrench provided on the backrest 43. The backrest unlocking wrench is linked to the backrest locking block 4312 via a backrest unlocking pull rope. When unlocking, the user operates the backrest unlocking wrench relative to the backrest back 43. The backrest unlocking wrench drives the backrest locking block 4312 to slide accordingly through the backrest unlocking pull rope, so that the backrest locking block 4312 separates from the backrest locking groove 4311.

[0074] To accommodate the seating needs of infants and toddlers of different heights and weights and to provide a comfortable seating space, a plurality of backrest locking grooves 4311 are arranged circumferentially at intervals on the rear end of the seat. The backrest locking blocks 4312 lock in cooperation with the corresponding backrest locking grooves 4311 to adjust the tilt angle of the backrest relative to the seat.

[0075] like Figure 1-9As shown, for easy unlocking, the seat frame also includes an armrest 40. The lower end of the armrest 40 is rotatably connected to the carrier connector 41 or the rear end of the seat 42. An armrest locking component 401 is provided between the lower end of the armrest 40 and the rear end of the seat 42 to lock the armrest 40 relative to the rear end of the seat 42 in the unfolded use state. The armrest locking component 401 is configured to be unlocked by the backrest 43 when the backrest 43 is flipped and folded relative to the carrier connector 41 to a preset angle. The armrest locking assembly 401 includes, but is not limited to, an armrest locking part 4011 disposed on the carrier connector 41 and an armrest locking block 4012 slidably disposed at the lower end of the armrest bar 40 for locking engagement with the armrest locking part 4011. An armrest locking elastic element 4013 is provided between the armrest locking block 4012 and the armrest bar 40 for driving the armrest locking block 4012 to elastically reset. The lower end of the backrest 43 is provided with an armrest unlocking drive inclined part 402 for linkage with the armrest locking block 4012. When the backrest 43 is flipped and folded relative to the carrier connector 41 to a preset angle, the armrest unlocking drive inclined part 402 drives the armrest locking block 4012 to slide accordingly, so that the locking end of the armrest locking block 4012 separates from the armrest locking part 4011, thereby releasing the locking state of the armrest bar 40 relative to the carrier connector 41. At this time, the armrest bar 40 can be flipped and folded towards the seat part 42.

[0076] like Figure 1-6As shown, when the main body of the vehicle is folded down as a seat frame, the user operates the backrest unlocking lever to move accordingly relative to the backrest. The backrest unlocking lever, through the backrest unlocking pull cord, causes the backrest locking block 4312 to slide accordingly, causing the backrest locking block 4312 to separate from the backrest locking groove 4311. The user then operates the backrest 43 to fold and flip towards the seat 42 relative to the vehicle connector 41. The connector unlocking drive part 310 of the backrest 43 drives the connector unlocking pusher 311 to slide laterally relative to the vehicle connector 41. The push end of the connector unlocking pusher 311 presses against the connector unlocking linkage 312. 1. The connector unlocking linkage 3122 slides laterally relative to the frame connector 3 under the cooperation of the two connector unlocking linkage inclined parts 3123. The connector unlocking linkage 3122 slides vertically relative to the frame connector 3 through the two mutually cooperating unlocking linkage inclined walls to link the connector unlocking part 313 to slide laterally, so that the connector unlocking part 313 pushes the connector locking gear 302 to slide laterally, so that the connector locking gear 302 separates from the connector locking groove 301 on the frame connector 3, thereby releasing the locking state of the frame connector 3 relative to the frame joint. Then, under the overall movement of the folded vehicle body, the frame connector 3 rotates relative to the frame joints, causing the forward frame unlocking member 211 or the reverse frame unlocking member 212 to slide vertically relative to the rear leg joint block 121 through two mutually cooperating frame unlocking ramps. This separates the frame locking member 202 from the frame locking part 201, releasing the locking state of the front leg bar and the push rod relative to the rear leg bar. Afterwards, the push rod flips downwards towards the rear leg bar to fold it down. The push rod, through the joint linkage 14, links the front leg bar to flip backwards towards the rear leg bar to fold it down, thus completing the overall folding operation of the stroller. Figure 6 As shown.

[0077] like Figure 25-31As shown, in order to achieve linkage folding, the main body 4 of the vehicle is a sleeping basket, including a surrounding tube assembly 44, a load-bearing assembly 45, a sleeping basket linkage assembly 46, a surrounding tube joint 47, and a surrounding tube unlocking mechanism 48. The enclosure assembly 44 includes a front enclosure 441 and a rear enclosure 442 that can be folded in opposite directions or unfolded in opposite directions, and the front enclosure 441 and the rear enclosure 442 are rotatably connected; the support assembly 45 has unfolding and folding functions; the bassinet linkage assembly 46 is located between the enclosure assembly 44 and the support assembly 45; the enclosure joint 47 is located between the front enclosure 441 and the rear enclosure 442 and is used to lock the front enclosure 441 relative to the rear enclosure 442; the enclosure unlocking mechanism 48 is provided on the front enclosure 441 or the rear enclosure 442 and is linked to the enclosure joint 47 to release the locking state of the front enclosure 441 relative to the rear enclosure 442; the carrier connector 41 is provided on the enclosure assembly 44 or the support assembly 45; the connector unlocking assembly 31 is configured to trigger the linkage when the current enclosure 441 or the rear enclosure 442 is flipped and folded to a preset angle, thereby triggering the connector locking assembly 30 to release the locking state.

[0078] like Figure 25-31 As shown, the supporting component 45 includes a front base plate 451, a transition connecting plate 452, and a rear base plate 453. The front side of the transition connecting plate 452 is rotatably connected to the rear side of the front base plate 451, and the rear side of the transition connecting plate 452 is rotatably connected to the front side of the rear base plate 453. The bassinet linkage component 46 is rotatably connected to the front base plate 451, the rear base plate 453, and the enclosure tube component 44, respectively. The bassinet linkage component 46 is relatively fixedly connected to the transition connecting plate 452. During the folding process of the front enclosure tube 441 and the rear enclosure tube 442 approaching each other, the front base plate 451 and the rear base plate 453 fold towards the front enclosure tube 441 and the rear enclosure tube 442, respectively. In this embodiment, the enclosure tube assembly works in conjunction with the support assembly through the basket linkage assembly. That is, during the folding process of the front and rear enclosure tubes facing each other, the basket linkage assembly will simultaneously pull the front bottom plate to fold towards the front enclosure tube and the rear bottom plate to fold towards the rear enclosure tube. This ensures that the folding actions of the enclosure tube assembly and the support assembly are completely synchronized, effectively ensuring that the movement trajectories of each component are consistent during the folding process of the basket. This avoids misalignment or suspension of the support assembly and the enclosure tube assembly, ultimately achieving "layered" storage—the enclosure tubes and the bottom plate fit tightly together, significantly reducing the storage volume and greatly improving space utilization. It also features convenient storage and safety.

[0079] In this embodiment, the basket linkage component rigidly couples the rotation of the enclosure component with the flipping of the load-bearing component. The user only needs to trigger the enclosure unlocking mechanism with one hand, and the front and rear enclosures will automatically fold towards the center. The front bottom plate, transition connecting plate and rear bottom plate will simultaneously complete the three-section stacking. No secondary action is required throughout the process, avoiding the risk of pinching hands. When unfolding in the reverse direction, it is also done in one step. It has the functions of efficient storage and unfolding, and the operation is simple and convenient.

[0080] To achieve a tighter fold and minimize the space occupied by the folded bassinet, the bassinet linkage assembly 46 is configured such that during the folding process of the front and rear enclosure tubes 441 and 442 approaching each other, the front bottom plate 451 and rear bottom plate 453 fold towards and away from the front and rear enclosure tubes 441 and 442 respectively, and the vertical distance between the rotation axis between the front and rear enclosure tubes 441 and the transition connecting plate 452 is reduced. Figure 26 , 27 As shown.

[0081] like Figure 25-31 As shown, the enclosure tube joint 47 includes a front joint block 471 and a rear joint block 472 pivotally connected to each other. The front joint block 471 is connected to the front enclosure tube 441, and the rear joint block 472 is connected to the rear enclosure tube 442. A joint drive portion 473 is formed on either the front or rear joint block 471, extending towards the rear or front joint block 471 respectively. The bassinet linkage assembly 46 is rotatably connected to the end of the joint drive portion 473. In this embodiment, the bassinet linkage assembly 46 is directly driven by the joint drive portion 473, effectively simplifying the transmission chain and improving response efficiency. The joint drive portion 473 is integrally formed or fixedly connected to the front joint block 471, eliminating the need for an additional external transmission mechanism, significantly reducing the lateral / longitudinal dimensions of the front joint block 471, enhancing structural compactness, and saving space. For reliable locking, the front joint block 471 and the rear joint block 472 can be locked together by a locking groove and a locking block.

[0082] like Figure 30 , 31 As shown, in this embodiment, the connector unlocking drive unit 310 is disposed on the front joint block 471. The connector unlocking drive unit 310 and the connector unlocking push member 311 are linked together by push linkage block one 3111 and push linkage block two 3112. Push linkage block one 3111 is slidably disposed on the rear joint block 472 and linked together with the connector unlocking drive unit 310. Push linkage block two 3112 is vertically slidably disposed on the carrier connector 41 and linked together with the connector unlocking push member 311. Push linkage block two 3112 and push linkage block one 3111 are linked together by push linkage pull rope. When the current enclosure tube 441 or the rear enclosure tube 442 is flipped and folded to a preset angle, the connector unlocking drive unit 310 drives the push linkage block one 3111 to drive the push linkage block two 3112 to slide vertically. The push linkage block two 3112 drives the connector unlocking push member 311 to slide horizontally in a corresponding manner through the cooperation of two push linkage inclined parts, thereby causing the connector unlocking push member 311 to press against the connector unlocking linkage member one 3121 of the connector unlocking linkage group 312.

[0083] like Figure 25-31As shown, the bassinet linkage assembly 46 includes, but is not limited to, a front upper link 461, a front lower link 462, a middle link 463, a rear link 464, a first linkage rod 465, and a second linkage rod 466; the upper end of the front upper link 461 is rotatably connected to the front casing tube 441, the lower end of the front upper link 461 is rotatably connected to the upper end of the front lower link 462, and the lower end of the front lower link 462 is rotatably connected to the front base plate 451; the upper end of the middle link 463 is rotatably connected to the rear casing tube 442, and the lower end of the middle link 463 is connected to the transition link The connecting plate 452 is fixedly connected; the upper end of the rear connecting rod 464 is rotatably connected to the rear casing tube 442, and the lower end of the rear connecting rod 464 is rotatably connected to the rear bottom plate 443; the front end of the first linkage rod 465 is rotatably connected to the joint drive part 473, and the rear end of the first linkage rod 465 is rotatably connected to the middle or upper part of the intermediate connecting rod 463; the front end of the second linkage rod 466 is rotatably connected to the middle or lower part of the front upper connecting rod 461, and the rear end of the second linkage rod 466 is rotatably connected to the middle or front part of the first linkage rod 465. This embodiment employs a multi-link coordinated design to form a triple linkage system: "front tube - front upper link - front lower link - front bottom plate," "rear tube - middle link - transition connecting plate - rear link - rear bottom plate," and "front tube - first linkage rod - middle link - rear tube." This ensures that when the front and rear tubes fold towards each other, the folding angle and speed of the front bottom plate and the front tube, and the rear bottom plate and the rear tube, are completely consistent. Specifically, as the front upper link rotates with the front tube, it directly pulls the front bottom plate to fold synchronously towards the inside of the front tube via the front lower link. The first linkage rod transmits the rotational force of the joint drive unit of the front tube to the middle link, causing the rear tube to fold synchronously with the transition connecting plate and the rear bottom plate. The second linkage rod connects the front upper link and the first linkage rod, further constraining the rotation angle of the front and rear tubes, avoiding movement deviations caused by manufacturing tolerances or external force interference. Ultimately, this achieves the effect of "four-link synchronous movement," significantly improving the consistency of the folding action and making the folded basket structure more compact.

[0084] like Figure 25-27As shown, when the main body of the vehicle is a sleeping basket and is folded, the user operates the front enclosure tube 441 to flip and fold it relative to the rear enclosure tube 442 to a preset angle. The connector unlocking drive unit 310 drives the push linkage block one 3111 to drive the push linkage block two 3112 to slide vertically. The push linkage block two 3112 drives the connector unlocking push member 311 to slide horizontally in a corresponding manner through the cooperation of two push linkage inclined parts. This causes the connector unlocking push member 311 to press against the connector unlocking linkage member one 3121 of the connector unlocking linkage group 312. The second unlocking linkage 3122 slides vertically relative to the frame connector 3 under the cooperation of the two connector unlocking linkage inclined parts 3123. The second unlocking linkage 3122 of the connector slides horizontally relative to the connector unlocking part 313 through the two mutually cooperating unlocking linkage inclined walls. This causes the connector unlocking part 313 to push the connector locking gear 302 to slide horizontally, so that the connector locking gear 302 is separated from the connector locking groove 301 on the frame connector 3, thereby releasing the locking state of the frame connector 3 relative to the frame joint. Then, under the overall movement of the folded vehicle body, the frame connector 3 rotates relative to the frame joints, causing the forward frame unlocking member 211 or the reverse frame unlocking member 212 to slide vertically relative to the rear leg joint block 121 through two mutually cooperating frame unlocking ramps. This separates the frame locking member 202 from the frame locking part 201, releasing the locking state of the front leg bar and the push rod relative to the rear leg bar. Afterwards, the push rod flips downwards towards the rear leg bar to fold it down. The push rod, through the joint linkage 14, links the front leg bar to flip backwards towards the rear leg bar to fold it down, thus completing the overall folding operation of the stroller. Figure 6 As shown.

Claims

1. A stroller that facilitates folding and retraction of the vehicle and frame, characterized in that... include: The frame body (1) has the function of unfolding and folding. The frame body (1) includes a front leg (11), a rear leg (12) and a push rod (13). The upper end of the front leg (11), the upper end of the rear leg (12) and the lower end of the push rod (13) are rotatably connected through the frame joint (2). The frame joint (2) is connected to the frame connector (3). A frame locking assembly (20) is provided on the frame joint (2) and is used to lock the frame body (1) in the unfolded use state. The vehicle body (4) has unfolding and folding functions. The vehicle body (4) is provided with a vehicle connector (41). The vehicle body (4) is connected to the frame connector (3) through the vehicle connector (41). The vehicle body (4) has multiple height adjustment positions relative to the frame joint (2), and when the vehicle body (4) is in any height adjustment position relative to the frame joint (2), the frame joint (2) can be unlocked by the folding action of the vehicle body (4) in conjunction with the frame locking component (20).

2. The stroller according to claim 1, which facilitates the linkage between the carrier and the frame for folding, is characterized in that... The frame connector (3) is rotatably connected to the frame joint (2) and the vehicle connector (41) is fixedly connected to the vehicle body (4). During the folding process of the vehicle body (4), the frame connector (3) can be unlocked relative to the frame joint (2). The vehicle body (4) and the vehicle connector (41) rotate together with the frame connector (3) relative to the frame joint (2) to a preset angle and unlock the frame locking component (20).

3. A stroller according to claim 2 that facilitates the linkage between the carrier and the frame for folding, characterized in that... Multiple height adjustment positions are provided between the vehicle connector (41) and the frame connector (3). When the vehicle connector (41) is in any height adjustment position relative to the frame connector (3), the frame locking component (20) can be rotated to a preset angle by the vehicle body (4) and unlocked in conjunction.

4. A stroller according to claim 1 that facilitates the linkage between the carrier and the frame for folding, characterized in that... The frame connector (3) is fixedly connected to the frame joint (2), and the vehicle connector (41) can be unlocked and rotatably connected to the vehicle body (4). During the folding process of the vehicle body (4), the vehicle connector (41) can be unlocked relative to the vehicle body (4). The vehicle body (4) rotates as a whole relative to the vehicle connector (41) and the frame connector (3) to a preset angle, thereby unlocking the frame locking component (20).

5. A stroller according to claim 4 that facilitates the linkage between the carrier and the frame for folding, characterized in that... The vehicle body (4) has multiple height adjustment positions relative to the vehicle connector (41). When the vehicle body (4) is in any height adjustment position relative to the vehicle connector (41), the frame locking assembly (20) can be rotated to a preset angle by the vehicle body (4) and unlocked in conjunction.

6. A stroller according to claim 3 that facilitates the linkage between the vehicle and the frame for folding, characterized in that... A connector locking assembly (30) for locking the frame connector (3) relative to the frame joint (2) is provided between the frame connector (3) and the frame joint (2). A frame unlocking assembly (21) linked with the frame locking assembly (20) is provided on the frame connector (3). A connector unlocking assembly (31) linked with the connector locking assembly (30) is provided between the vehicle body (4) and the frame connector (3). The connector unlocking component (31) is configured to be linked by the folding action of the vehicle body (4). When the frame connector (3) rotates relative to the frame joint (2) to a preset angle, the frame unlocking component (21) is triggered to move, thereby linking the frame locking component (20) to release the locking state for vehicle folding.

7. A stroller that facilitates the linkage between the carrier and the frame for folding, as described in claim 1, 2, 3, 4, or 6, is characterized in that... A lifting control mechanism (5) is provided between the vehicle body (4) and the frame joint (2) so that the vehicle body (4) can be adjusted to multiple positions relative to the frame joint (2).

8. A stroller according to claim 7 that facilitates the linkage between the carrier and the frame for folding, characterized in that... The lifting control mechanism (5) is located between the vehicle connector (41) and the frame connector (3), and includes a lifting control lock (51), a lifting control lock (52), and a lifting control operation group (53). The plurality of lifting control locks (51) are arranged vertically on the frame connector (3), the lifting control lock (52) is slidably arranged on the vehicle connector (41) and used to lock with the corresponding lifting control lock (51), and the lifting control operation group (53) is movably arranged on the vehicle connector (41) and linked with the lifting control lock (52).

9. A stroller according to claim 8 that facilitates the linkage between the carrier and the frame for folding, characterized in that... The lifting control operation group (53) includes a control operation linkage seat (531) and a control operation lever (532). The control operation linkage seat (531) is vertically slidably mounted on the vehicle connector (41) and linked with the lifting control lock (52). The control operation lever (532) is vertically slidably mounted on the vehicle connector (41) and linked with the control operation linkage seat (531).

10. A stroller according to claim 6 that facilitates the linkage between the vehicle and the frame for folding, characterized in that... The connector unlocking assembly (31) includes a connector unlocking pusher (311), a connector unlocking linkage group (312), and a connector unlocking component (313). The connector unlocking pusher (311) is slidably mounted on the vehicle connector (41) and is linked by the folding action of the vehicle body (4). The connector unlocking linkage group (312) and the connector unlocking component (313) are both movably mounted on the frame connector (3). The connector unlocking pusher (311) is linked with the connector unlocking component (313) through the connector unlocking linkage group (312). The connector unlocking component (313) is linked with the connector locking assembly (30).

11. A stroller according to claim 10 that facilitates the linkage between the vehicle and the frame for folding, characterized in that... The connector unlocking linkage group (312) includes a connector unlocking linkage component one (3121), a connector unlocking linkage component two (3122), and a connector unlocking linkage inclined part (3123). The connector unlocking linkage component one (3121) is slidably disposed on the frame connector (3) and is linked with the connector unlocking push component (311). The connector unlocking linkage component two (3122) is slidably disposed on the frame connector (3). The connector unlocking linkage inclined part (3123) is disposed on the connector unlocking linkage component one (3121) and the connector unlocking linkage component two (3122) respectively and can cooperate with each other. The connector unlocking linkage component two (3122) is linked with the connector unlocking component (313).

12. A stroller according to claim 10 or 11 that facilitates the linkage between the carrier and the frame for folding, characterized in that... The connector locking assembly (30) includes connector locking grooves (301) respectively disposed on opposite sides of the frame connector (3) and the frame joint (2) and a connector locking gear (302) slidably disposed between the frame connector (3) and the frame joint (2) and capable of simultaneously engaging with the connector locking grooves (301) on the frame connector (3) and the frame joint (2). A connector locking elastic element for driving the connector locking gear (302) to elastically reset is provided between the connector locking gear (302) and the frame joint (2). The connector locking gear (302) is linked with the connector unlocking element (313).

13. A stroller according to claim 6 that facilitates the linkage between the vehicle and the frame for folding, characterized in that... The frame joint (2) includes a front foot joint block (111) located at the upper end of the front foot post (11), a rear foot joint block (121) located at the upper end of the rear foot post (12), and a push rod joint block (131) located at the lower end of the push rod (13). The front foot joint block (111) and the push rod joint block (131) are rotatably connected to the rear foot joint block (121), and a space is provided between the front foot joint block (111) and the push rod joint block (131). Regarding the joint linkage (14), the front end of the joint linkage (14) is rotatably connected to the front foot joint block (111), and the rear end of the joint linkage (14) is rotatably connected to the push rod joint block (131); the frame connector (3) is rotatably connected to the rear foot joint block (121); the frame locking assembly (20) is located between the front foot joint block (111), the rear foot joint block (121), and the push rod joint block (131).

14. A stroller according to claim 13 that facilitates the linkage between the carrier and the frame for folding, characterized in that... The frame locking assembly (20) includes a frame locking part (201) disposed on the front leg joint block (111) and / or the push rod joint block (131) and a frame locking member (202) slidably disposed on the rear leg joint block (121) and used for locking with the frame locking part (201). A frame locking elastic member is provided between the frame locking member (202) and the rear leg joint block (121). The frame unlocking assembly (21) includes a frame unlocking member disposed on the frame connector (3) and linked with the frame locking member (202).

15. A stroller according to claim 6 that facilitates the linkage between the carrier and the frame for folding, characterized in that... The vehicle body (4) has a forward installation state and a reverse installation state. The frame unlocking assembly (21) includes a forward frame unlocking component (211) and a reverse frame unlocking component (212) disposed on the frame connector (3). A switching linkage assembly (22) for switching the working state of the forward frame unlocking component (211) and the reverse frame unlocking component (212) is provided between the frame connector (3) and the vehicle connector (41). When the vehicle body (4) is in the forward installation state, the switching linkage assembly (22) will unlock the forward frame unlocking component (211). The reverse frame unlocking component (212) is switched to: the forward frame unlocking component (211) is linked with the frame locking component (20), and the linkage between the reverse frame unlocking component (212) and the frame locking component (20) is released; when the vehicle body (4) is in the reverse installation state, the switching linkage component (22) switches the forward frame unlocking component (211) and the reverse frame unlocking component (212) to: the reverse frame unlocking component (212) is linked with the frame locking component (20), and the linkage between the forward frame unlocking component (211) and the frame locking component (20) is released.

16. A stroller according to claim 6 that facilitates the linkage between the vehicle and the frame for folding, characterized in that... The main body (4) of the vehicle is a seat frame, including a seat part (42) and a backrest (43). The rear end of the seat part (42) is fixedly connected to the vehicle connector (41). The lower end of the backrest (43) is rotatably connected to the vehicle connector (41) directly or indirectly. A backrest locking mechanism (431) for locking the backrest (43) relative to the vehicle connector (41) is provided between the backrest (43) and the vehicle connector (41). A backrest unlocking mechanism (432) for linkage with the backrest locking mechanism (431) is provided on the backrest (43). The connector unlocking component (31) is configured to trigger linkage when the backrest (43) is flipped and folded relative to the vehicle connector (41) to a preset angle, thereby linkageing the connector locking component (30) to release the locking state.

17. A stroller according to claim 6 that facilitates the linkage between the carrier and the frame for folding, characterized in that... The main body of the vehicle (4) is a sleeping basket, including: Enclosure assembly (44), the enclosure assembly (44) includes a front enclosure (441) and a rear enclosure (442) that can be folded in opposite directions or unfolded in opposite directions, the front enclosure (441) and the rear enclosure (442) being rotatably connected; The support component (45) has the function of unfolding and folding; A bassinet linkage assembly (46) is located between the enclosure assembly (44) and the support assembly (45); The coaxial tube joint (47) is located between the front coaxial tube (441) and the rear coaxial tube (442) and is used to lock the front coaxial tube (441) relative to the rear coaxial tube (442); Enclosure unlocking mechanism (48), the enclosure unlocking mechanism (48) is provided on the front enclosure (441) or the rear enclosure (442) and is linked with the enclosure joint (47) so as to release the locking state of the front enclosure (441) relative to the rear enclosure (442) by linking the enclosure joint (47). The vehicle connector (41) is provided on the enclosure assembly (44) or the carrier assembly (45); The connector unlocking component (31) is configured to trigger a linkage when the current enclosure tube (441) or the rear enclosure tube (442) is flipped and folded to a preset angle, thereby triggering the connector locking component (30) to release the locking state.

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