Baby carriage facilitating linkage folding of carrier and frame

Abstract

The invention discloses a baby carrier convenient for linkage folding of a carrier and a frame, which is characterized in that frame joints are configured to enable a carrier main body to be folded by the carrier main body when the carrier main body is at any height adjusting gear relative to the frame joints so as to be linked with a frame locking assembly for unlocking, that is, through the design that linkage folding can be performed at any height gear; a user can freely adjust the height of the carrier main body according to requirements, for example, the carrier main body is adjusted to a high position so that a baby can see scenery conveniently, or the carrier main body is adjusted to a low position so that the baby can get on and off the vehicle conveniently, and the height does not need to be adjusted due to vehicle folding; and even if the baby carriage needs to be folded temporarily, the carrier main body can be directly folded without additional operation height locking, so that the use flexibility and convenience are remarkably improved, the core requirements of a user on'multifunctional and easy-to-operate 'baby carriages are met, and the market competitiveness of the product is enhanced.

Description

Technical field

[0001] The present invention relates to the technical field of children's travel products, and in particular to a children's stroller with a carrier and a frame that can be conveniently linked and folded. [Background Technology]

[0002] As a core travel tool for infants and young children, the ease of use of strollers directly impacts the care experience of parents. As market demand escalates, foldable strollers have become mainstream, designed to minimize storage space and facilitate portability.

[0003] The carrier and frame of a traditional height-adjustable stroller are usually adjusted up and down through the cooperation of the carrier connector and the frame connector. A lifting control mechanism (such as a latch-type lock, rack engagement, or ratchet limit structure) is provided between the two, and multiple height adjustment gears (commonly 3-5 gears) are used to meet the needs of different scenarios. In order to ensure the stability of the carrier during implementation, a locking component (such as an elastic buckle, a limit groove, or a latch) must be provided between the carrier connector and the frame connector to prevent the carrier from sliding due to bumps. However, this design exposes the following core problems in actual use: when the vehicle needs to be quickly folded up (such as when carrying it out, avoiding obstacles, or sudden rain), the user needs to simultaneously complete the multiple operations of "unlocking the carrier connector → adjusting the vehicle to the lowest position → unlocking the frame body", which is complicated to operate and inconvenient to use.

[0004] In addition, there are still room for improvement and problems in the folding operation of the stroller in the prior art:

[0005] 1. Pain points in the folding operation of existing baby strollers

[0006] The folding process of a traditional stroller usually involves the independent unlocking and mating of multiple parts, and the operation steps are relatively cumbersome. Taking a common foldable stroller as an example, its structure generally includes a frame (connected by front and rear legs and a push rod through joints), a carrier (such as a seat, storage basket, etc.), and a connector assembly connecting the two. To ensure the stability of the unfolded state, the frame and connector assembly are usually equipped with independent locking mechanisms:

[0007] Frame locking: The frame joints (the pivot points connecting the front and rear leg bars and the push rod) must be secured with a frame locking assembly (such as a buckle, latch, or ratchet structure) to prevent accidental folding. When folding, the unlocking device of the frame locking assembly must be manually operated (such as pressing a button, moving a lock tongue, or pulling a handle) to release the locks between the various rods.

[0008] Connection and unlocking of the vehicle: The vehicle is connected to the frame joint through a frame connector. To prevent the vehicle from shaking or falling off during pushing, a connector locking assembly (such as an elastic clip or a limit groove) is usually provided between the frame connector and the frame. When folding the vehicle, the connector locking assembly must be manually released so that the vehicle can be separated from the frame or rotated relative to it.

[0009] This design means that folding requires users to complete a multi-step process: unlocking the frame lock assembly, releasing the connector lock assembly, adjusting the frame and carrier angle, and finally folding. This is especially true for parents with infants and young children, who must balance childcare with operating the stroller. The multi-step unlocking process can easily lead to missed operations (for example, forcing the stroller to fold without fully releasing the frame connector lock can cause component jamming or damage). Failure to fully unlock the stroller can also extend the folding process due to unfamiliarity with the operating sequence, reducing the user experience.

[0010] 2. Improvement Attempts and Limitations of Existing Technologies

[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 the connector locking assembly into the same unlocking handle, allowing the user to unlock both simultaneously with a single press; or 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 trigger source relies on manual intervention: The unlocking action still requires active user operation (such as pressing the handle or pulling the pull ring), and the mechanical movement of the vehicle's folding itself is not fully utilized as the triggering force. The user still needs to remember and perform additional operation steps.

[0013] Incomplete linkage logic: Some solutions only implement one-way linkage between the frame and the connector (for example, unlocking the connector when the frame is folded), but do not use the vehicle folding action to trigger the frame unlocking in reverse. As a result, the vehicle folding and frame unlocking still need to be operated in stages.

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

[0015] Therefore, the present invention is studied and proposed in view of the above problems. [Summary of the invention]

[0016] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a children's stroller that is easy to fold and fold with a carrier and a frame. The frame joints are configured so that when the carrier body is in any height adjustment position relative to the frame joints, the carrier body can be folded and the frame locking assembly can be unlocked. That is, the design of "the vehicle can be folded in a linked manner at any height gear" completely eliminates the conflict between height adjustment and folding operations: the user can freely adjust the height of the carrier body according to needs, such as adjusting the carrier body to a high position for the baby to view the scenery, or adjusting it to a low position for easy getting on and off, without adjusting the height due to folding; even if the vehicle needs to be folded temporarily, the carrier body can be directly folded without the need for additional height locking operation, which significantly improves the flexibility and convenience of use, meets the core needs of users for "multi-functional and easy-to-operate" children's strollers, and enhances the market competitiveness of the product.

[0017] In order to solve the above technical problems, the present invention provides a baby carriage that facilitates the linkage folding of a carrier and a frame, comprising:

[0018] The frame body has the function of being unfolded and folded, and includes a front foot rod, a rear foot rod and a push rod. The upper ends of the front foot rod, the upper ends of the rear foot rod and the lower end of the push rod are rotatably connected through a frame joint, and the frame joint is connected to a frame connector;

[0019] The frame locking assembly is provided on the frame joint and is used to lock the frame body in the unfolded use state;

[0020] The vehicle body has the functions of unfolding and folding, and is provided with a vehicle connector, through which the vehicle body is connected to the frame connector;

[0021] The vehicle body has multiple height adjustment gears relative to the frame joint, and when the vehicle body is at any height adjustment gear relative to the frame joint, the frame joint can be unlocked by the frame locking assembly due to the folding action of the vehicle body.

[0022] As described above, a baby stroller that facilitates the linkage and folding of the carrier and the frame, the frame connector can be unlocked and rotatably connected to the frame joint, and the carrier connector is relatively fixedly connected to the carrier body. During the folding process of the carrier body, the frame connector can be linked to be unlocked relative to the frame joint, and the carrier body and the carrier connector are linked to the frame locking assembly to be unlocked as the frame connector rotates as a whole to a preset angle relative to the frame joint.

[0023] As described above, in a stroller that facilitates the coordinated folding of a carrier and a frame, a plurality of height adjustment positions are provided between the carrier connector and the frame connector. When the carrier connector is at any height adjustment position relative to the frame connector, the frame locking assembly can be rotated as a whole by the carrier body to a preset angle and thus be unlocked in a coordinated manner.

[0024] As described above, a baby carriage that facilitates the coordinated folding of a carrier and a frame, the frame connector is relatively fixedly connected to the frame joint, and the carrier connector can be unlocked and rotatably connected to the carrier body. During the folding process of the carrier body, the carrier connector can be linked to be unlocked relative to the carrier body, and the carrier body can be rotated to a preset angle relative to the carrier connector and the frame connector as a whole, thereby unlocking the frame locking assembly.

[0025] As described above, a baby stroller that facilitates the coordinated folding of the carrier and the frame has a plurality of height adjustment gears provided between the carrier body and the carrier connector. When the carrier body is at any height adjustment gear relative to the carrier connector, the frame locking assembly can be unlocked by the carrier body as a whole being rotated to a preset angle.

[0026] As described above, a children's stroller that facilitates the linkage and folding of the carrier and the frame, a connector locking assembly for locking the frame connector relative to the frame joint is provided between the frame connector and the frame joint, and a frame unlocking assembly that is linked to the frame locking assembly is provided on the frame connector; a connector unlocking assembly that is linked to the connector locking assembly is provided between the carrier body and the frame connector; the connector unlocking assembly is configured to be linked by the folding action of the carrier body, and when the frame connector rotates to a preset angle relative to the frame joint, the frame unlocking assembly is triggered to move, thereby linking the frame locking assembly to release the locked state for folding the vehicle.

[0027] As for the above-mentioned baby carriage that facilitates the linkage folding of the carrier and the frame, a lifting control mechanism is provided between the carrier body and the frame joint so that the carrier body can be adjusted to multiple gears relative to the frame joint.

[0028] As for the above-mentioned baby carriage that is convenient for the linkage folding of the carrier and the frame, the lifting control mechanism is located between the carrier connector and the frame connector, and includes a lifting control lock part, a lifting control lock component, and a lifting control operation group; a plurality of lifting control lock parts are arranged on the frame connector at intervals in the upper and lower parts, the lifting control lock component can be slidably arranged on the carrier connector and is used to lock and cooperate with the corresponding lifting control lock part, and the lifting control operation group can be movably arranged on the carrier connector and is linked with the lifting control lock component.

[0029] As described above, a baby carriage that facilitates the linkage folding of the carrier and the frame, the lifting control operation group includes a control operation linkage seat and a control operation lever. The control operation linkage seat can be vertically slidably arranged on the carrier connector and is linked to the lifting control lock. The control operation lever can be vertically slidably arranged on the carrier connector and is linked to the control operation linkage seat.

[0030] As described above, a baby carriage that facilitates the linkage folding of the carrier and the frame, the connector unlocking assembly includes a connector unlocking push piece, a connector unlocking linkage group and a connector unlocking piece. The connector unlocking push piece can be slidably arranged on the carrier connector and is linked by the folding action of the carrier body. The connector unlocking linkage group and the connector unlocking piece can both be movably arranged on the frame connector. The connector unlocking push piece is linked to the connector unlocking piece through the connector unlocking linkage group, and the connector unlocking piece is linked to the connector locking assembly.

[0031] As described above, a children's stroller that is convenient for the carrier to be folded and linked with the frame, the connector unlocking linkage group includes a connector unlocking linkage part 1, a connector unlocking linkage part 2, and a connector unlocking linkage oblique part. The connector unlocking linkage part 1 can be laterally slidably arranged on the frame connector and is linked with the connector unlocking push part. The connector unlocking linkage part 2 can be vertically slidably arranged on the frame connector. The connector unlocking linkage oblique part is respectively arranged on the connector unlocking linkage part 1 and the connector unlocking linkage part 2 and can cooperate with each other; the connector unlocking linkage part 2 is linked with the connector unlocking part.

[0032] As described above, a baby carriage that facilitates the linkage and folding of the carrier and the frame, the connector locking assembly includes connector locking grooves respectively arranged on opposite sides of the frame connector and the frame joint, and a connector locking gear that is slidably arranged between the frame connector and the frame joint and can be simultaneously engaged with the connector locking grooves on the frame connector and the frame joint, a connector locking elastic member for driving the connector locking gear to elastically reset is provided between the connector locking gear and the frame joint; the connector locking gear is linked to the connector unlocking member.

[0033] As described above, a children's stroller that is easy to fold and link with the frame, the frame joints include a front foot joint block arranged at the upper end of the front foot rod, a rear foot joint block arranged at the upper end of the rear foot rod, and a push rod joint block arranged at the lower end of the hand push rod. The front foot joint block and the push rod joint block are respectively rotatably connected to the rear foot joint block. A joint linkage is provided between the front foot joint block and the push rod joint block. The front end of the joint linkage is rotatably connected to the front foot joint block, and the rear end of the joint linkage is rotatably connected to the push rod joint block; the frame connector is rotatably connected to the rear foot joint block; and the frame locking assembly is located between the front foot joint block, the rear foot joint block and the push rod joint block.

[0034] As described above, a baby carriage that facilitates the linkage folding of the carrier and the frame, the frame locking assembly includes a frame locking portion provided on the front foot joint block and / or the push rod joint block and a frame locking piece slidably provided on the rear foot joint block and used to lock with the frame locking portion, and a frame locking elastic piece is provided between the frame locking piece and the rear foot joint block; the frame unlocking assembly includes a frame unlocking piece provided on the frame connector and linked to the frame locking piece.

[0035] As described above, a children's stroller that is convenient for the carrier to be linked and folded with the frame, the carrier body has a forward installation state and a reverse installation state, the frame unlocking assembly includes a forward frame unlocking part and a reverse frame unlocking part provided on the frame connector, and a switching linkage assembly for switching the working states of the linked forward frame unlocking part and the reverse frame unlocking part is provided between the frame connector and the carrier connector; when the carrier body is in the forward installation state, the switching linkage assembly switches the forward frame unlocking part and the reverse frame unlocking part to: the forward frame unlocking part and the frame locking assembly are linked together, and the linkage between the reverse frame unlocking part and the frame locking assembly is released; when the carrier body is in the reverse installation state, the switching linkage assembly switches the forward frame unlocking part and the reverse frame unlocking part to: the reverse frame unlocking part and the frame locking assembly are linked together, and the linkage between the forward frame unlocking part and the frame locking assembly is released.

[0036] As described above, a baby carriage that is convenient for the carrier to be folded and linked with the frame, the carrier body is a seat frame, including a seat part and a backrest, the rear end of the seat part is relatively fixedly connected to the carrier connector, and the lower end of the backrest is directly or indirectly rotatably connected to the carrier connector, and a backrest locking mechanism for locking the backrest relative to the carrier connector is provided between the backrest and the carrier connector, and a backrest unlocking mechanism for being linked with the backrest locking mechanism is provided on the backrest; the connector unlocking component is configured to trigger the linkage when the backrest is flipped and folded to a preset angle relative to the carrier connector, thereby linking the connector locking component to release the locked state.

[0037] As described above, a baby carriage that facilitates linkage folding of the carrier and the frame, wherein the carrier body is a sleeping basket, includes:

[0038] The enclosure tube assembly includes a front enclosure tube and a rear enclosure tube that can be folded toward each other or unfolded in opposite directions, and the front enclosure tube and the rear enclosure tube are rotatably connected;

[0039] The load-bearing component has the functions of unfolding and folding;

[0040] The sleeping basket linkage assembly is located between the surrounding tube assembly and the load-bearing assembly;

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

[0042] The enclosure tube unlocking mechanism is provided on the front enclosure tube or the rear enclosure tube and is linked with the enclosure tube joint to release the locking state of the front enclosure tube relative to the rear enclosure tube by linking the enclosure tube joint;

[0043] The carrier connector is provided on the surrounding tube assembly or the carrier assembly;

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

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

[0046] 1. The present invention configures the frame joint so that when the carrier body is in any height adjustment gear relative to the frame joint, the carrier body can be folded and the frame locking assembly can be unlocked. That is, the design of "the vehicle can be folded in any height gear" completely eliminates the conflict between height adjustment and folding operation: the user can freely adjust the height of the carrier body according to needs, such as adjusting the carrier body to a high position for the baby to view the scenery, or adjusting it to a low position for easy getting on and off, without having to adjust the height due to folding the vehicle; even if the vehicle needs to be folded temporarily, the carrier body can be directly folded without the need for additional height locking operation, which significantly improves the flexibility and convenience of use, meets the core needs of users for "multi-functional and easy-to-operate" children's vehicles, and enhances the market competitiveness of the product.

[0047] 2. The present invention directly uses the folding action of the vehicle body as a trigger source: during the folding process of the vehicle body, the folding action of the vehicle body links the connector unlocking assembly to release the locking state of the connector locking assembly, that is, to release the locking state of the frame connector relative to the frame joint; then, the frame connector is driven by the folded vehicle body as a whole to rotate to a preset angle relative to the frame joint, further triggering the frame unlocking assembly to release the locking state of the frame locking assembly, that is, to release the locking state of the frame body, and finally realizing the full process of "vehicle body folding → frame connector unlocking → frame body unlocking → overall folding" coherent operation. Therefore, the user only needs to complete the core action of folding the vehicle body to automatically trigger all subsequent unlocking steps, which significantly reduces the operation links, improves the convenience of use, and realizes the function of folding the vehicle in one step and operating with one hand.

[0048] 3. The present invention utilizes the linkage between the connector locking assembly and the connector unlocking assembly, as well as the linkage between the frame locking assembly and the frame unlocking assembly, so that the frame unlocking assembly is triggered only after the vehicle body is folded into place and the frame connector is rotated to a preset angle relative to the frame joint. This can effectively prevent the frame body from folding prematurely, causing hand pinching or structural interference, thereby improving safety and reducing the risk of misoperation.

[0049] 4. In order to achieve efficient and convenient retraction and extension linkage, the forefoot joint block and the push rod joint block are linked via a joint linkage member.

[0050] 5. A switching linkage component for switching the working states of the forward frame unlocking part and the reverse frame unlocking part is provided between the frame connector and the vehicle connector of the present invention. Through this "ready-to-install" automated design, the user only needs to complete the direction adjustment of the vehicle body without the need for additional operation of the unlocking part, which greatly simplifies the use process of multi-directional installation and effectively solves the problems of cumbersome folding and high risk of misoperation caused by manual adjustment of the unlocking logic of traditional children's vehicles, providing users with a more efficient, safe and worry-free children's vehicle use experience.

Brief Description of the Drawings

[0051] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0052] Figure 1 This is a three-dimensional diagram of the seat frame when it is installed facing forward in the present invention. Figure 2 This is a three-dimensional view of the seat frame of the present invention when it is installed facing backward. Figure 3 This is a side view of the seat frame of the present invention when it is installed facing backward and is in the unfolded use state. Figure 4 This is one of the side views of the baby carriage of the present invention in the folding process. Figure 5 This is the second side view of the baby carriage in the folding process according to the present invention. Figure 6 This is the third side view of the baby carriage in the folding process according to the present invention. Figure 7 This is a three-dimensional diagram of the seat frame when it is separated from the frame body in the present invention. Figure 8 This is one of the exploded views of the seat frame in the present invention. Figure 9 This is the second exploded view of the seat frame in the present invention. Figure 10 It is a partial three-dimensional diagram of the backrest in the present invention. Figure 11 It is a three-dimensional diagram of the carrier connector in the present invention. Figure 12 It is a structural diagram of the lifting control mechanism in the present invention. Figure 13 This is one of the three-dimensional views of the frame connector of the present invention. Figure 14 This is the second perspective view of the vehicle frame connector of the present invention. Figure 15 It is a side view of the frame connector of the present invention. Figure 16 This is an exploded view of the connector unlocking component and the switching linkage component in the present invention. Figure 17 This is an exploded view of the connector unlocking assembly of the present invention. Figure 18 This is one of the three-dimensional views of the frame joint in the present invention. Figure 19 This is the second stereoscopic view of the frame joint in the present invention. Figure 20 This is the third stereoscopic view of the frame joint of the present invention. Figure 21 This is the fourth stereoscopic view of the frame joint of the present invention. Figure 22 This is the fifth stereoscopic view of the frame joint of the present invention. Figure 23 This is one of the exploded views of the frame joint in the present invention. Figure 24This is the second exploded view of the frame joint in the present invention. Figure 25 This is a three-dimensional diagram of the sleeping basket connected to the frame body of the present invention. Figure 26 This is one of the side views of the sleeping basket connected to the frame body and in the folding process according to the present invention. Figure 27 This is a second side view of the sleeping basket connected to the bicycle frame and in the folding process according to the present invention. Figure 28 This is one of the three-dimensional views of the sleeping basket of the present invention. Figure 29 This is the second perspective view of the sleeping basket of the present invention. Figure 30 This is one of the exploded views of the sleeping basket of the present invention. Figure 31 This is the second exploded view of the sleeping basket of the present invention. [Specific implementation method]

[0053] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0054] like Figure 1-31 As shown, the present invention provides a baby stroller that facilitates the linkage and folding of a carrier and a frame, comprising a frame body 1, a frame locking assembly 20, and a carrier body 4. The frame body 1 has the functions of unfolding and folding, and includes a front leg rod 11, a rear leg rod 12, and a push rod 13. The upper ends of the front leg rod 11, the upper ends of the rear leg rod 12, and the lower ends of the push rod 13 are rotatably connected via a frame joint 2, and the frame joint 2 is connected to a frame connector 3; the 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 carrier body 4 has the functions of unfolding and folding, and is provided with a carrier connector 41, and the carrier body 4 is connected to the frame connector 3 via the carrier connector 41; the carrier body 4 has multiple height adjustment gears relative to the frame joint 2, and when the carrier body 4 is in any height adjustment gear relative to the frame joint 2, the frame joint 2 can be unlocked by the folding action of the carrier body 4 and the linkage frame locking assembly 20. The present invention configures the frame joints so that when the carrier body is in any height adjustment position relative to the frame joints, the carrier body can be folded and the frame locking assembly can be unlocked. That is, the design of "the vehicle can be folded in any height position" completely eliminates the conflict between height adjustment and folding operation: the user can freely adjust the height of the carrier body according to needs, such as adjusting the carrier body to a high position for the baby to view the scenery, or adjusting it to a low position for easy getting on and off, without the need to adjust the height due to folding the vehicle; even if the vehicle needs to be folded temporarily, the carrier body can be directly folded without the need for additional height locking operation, which significantly improves the flexibility and convenience of use, meets the core needs of users for "multi-functional and easy-to-operate" children's vehicles, and enhances the market competitiveness of the product.

[0055] As one embodiment of the present invention, Figure 1-31As shown, the frame connector 3 is unlockably and rotatably connected to the frame joint 2, and the carrier connector 41 is fixedly connected to the carrier body 4. During the folding process of the carrier body 4, the frame connector 3 can be unlocked relative to the frame joint 2. The carrier body 4 and the carrier connector 41 rotate as a whole relative to the frame joint 2 to a preset angle, thereby unlocking the frame locking assembly 20. Furthermore, multiple height adjustment positions are provided between the carrier connector 41 and the frame connector 3. When the carrier connector 41 is in any height adjustment position relative to the frame connector 3, the frame locking assembly 20 can be unlocked by rotating the carrier body 4 as a whole to a preset angle. This embodiment uses the closed-loop logic of "vehicle body folding action → frame connector linkage unlocking → preset angle triggering frame body unlocking" to upgrade the vehicle body folding and frame body unlocking from "independent operation" to "causal linkage", realizing the intelligent design of "user's active folding intention driving frame body unlocking". It not only simplifies the operating process and improves safety, but also enhances structural reliability by reducing redundant components, reduces production costs, and enhances the market competitiveness of the product.

[0056] As another embodiment of the present invention, the frame connector 3 is fixedly connected to the frame joint 2, and the carrier connector 41 is unlockably and rotatably connected to the carrier body 4. During the folding process of the carrier body 4, the carrier connector 41 can be unlocked relative to the carrier body 4. The carrier body 4 is rotated to a preset angle relative to the carrier connector 41 and the frame connector 3, thereby unlocking the frame locking assembly 20. The carrier body 4 is provided with multiple height adjustment positions relative to the carrier connector 41. When the carrier body 4 is in any height adjustment position relative to the carrier connector 41, the frame locking assembly 20 can be unlocked by rotating the carrier body 4 to a preset angle.

[0057] like Figure 1-31As shown, 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, and a frame unlocking assembly 21 is provided on the frame connector 3, which 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, which 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, and when the frame connector 3 rotates to a preset angle relative to the frame joint 2, the frame unlocking assembly 21 is triggered to move, thereby linking the frame locking assembly 20 to release the locked state for folding the vehicle. The present invention directly uses the folding action of the carrier body as a trigger source: during the folding process of the carrier body, the folding action of the carrier body links the connector unlocking assembly to release the locking state of the connector locking assembly, that is, to release the locking state of the frame connector relative to the frame joint; then, the frame connector is driven by the folded carrier body as a whole to rotate to a preset angle relative to the frame joint, further triggering the frame unlocking assembly to release the locking state of the frame locking assembly, that is, to release the locking state of the frame body, and finally realizing the full process of "carrier body folding → frame connector unlocking → frame body unlocking → overall folding" coherent operation. Therefore, the user only needs to complete the core action of folding the carrier body to automatically trigger all subsequent unlocking steps, which significantly reduces the operation links, improves the convenience of use, and realizes the function of folding the vehicle in one step and operating with one hand.

[0058] like Figure 8 、 9 As shown in Figures 13 and 15 , in order to facilitate adjustment and ensure a 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 gears relative to the frame joint 2 .

[0059] like Figure 8 、 9 As shown in Figures 12, 13, and 15, in order to ensure stable and reliable multi-level height adjustment and meet diverse usage requirements, the lifting control mechanism 5 is located between the carrier connector 41 and the frame connector 3 and includes a lifting control lock portion 51, a lifting control lock element 52, and a lifting control operation group 53. The plurality of lifting control lock portions 51 are arranged on the frame connector 3 at intervals in the upper and lower directions. The lifting control lock elements 52 are slidably arranged on the carrier connector 41 and are used to lock with corresponding lifting control lock portions 51. The lifting control operation group 53 is movably arranged on the carrier connector 41 and is arranged in conjunction with the lifting control lock elements 52. In this embodiment, the lifting control lock elements 52 and the lifting control operation group 53 are integrated into the carrier connector to form a modular component, reducing the need for additional installation space. This integrated design facilitates rapid 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, to facilitate unlocking and adjustment, the lifting control operation group 53 includes a control operation linkage seat 531 and a control operation rod 532. The control operation linkage seat 531 can be vertically slidably arranged on the carrier connector 41 and is linked to the lifting control lock 52. The control operation rod 532 can be vertically slidably arranged on the carrier connector 41 and is linked to the control operation linkage seat 531. To facilitate resetting, a linkage seat unlocking elastic member 533 is provided between the control operation linkage seat 531 and the carrier connector 41 for driving the control operation linkage seat 531 to elastically reset. To ensure reliable linkage, the control operation linkage seat 531 has a strip-shaped unlocking inclined hole 5311, and a linkage shaft rod is passed through the strip-shaped unlocking inclined hole 5311 and is relatively fixedly connected to the lifting control lock 52. In this embodiment, the control operation linkage seat 531 and the control operation rod 532 are independent components with a relatively simple structure and clear functional division of labor: the control operation rod 532 is responsible for inputting operating force, and the control operation linkage seat 531 is responsible for transmitting and converting motion. This modular feature reduces maintenance costs and time.

[0061] During the adjustment process, the pressing control operating rod 532 slides vertically relative to the vehicle connector 41, and the control operating rod 532 presses the control operating linkage seat 531 to slide vertically accordingly. The corresponding oblique wall of the strip unlocking inclined hole 5311 drives the linkage shaft rod to drive the lifting control lock 52 to slide horizontally accordingly, so that the locking end of the lifting control lock 52 is separated from the lifting control lock part 51. Then, according to the use requirements, the vehicle connector is adjusted to move upward or downward relative to the frame connector. When it is adjusted to the required position, the pressing force on the control operating rod 532 is canceled. At this time, the control operating linkage seat 531 slides upward and resets under the elastic force of the linkage seat unlocking elastic member 533, that is, the corresponding side wall of the strip unlocking inclined hole 5311 drives the linkage shaft 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. The design of linked unlocking through rigid parts in this embodiment effectively solves the problems of traditional unlocking methods such as laborious operation, easy jamming, inaccurate positioning and poor adaptability. It has the characteristics of efficient force transmission, stable and reliable, precise positioning, and durable adaptability.

[0062] like Figure 8 、 9As shown in Figures 12, 13, and 15, the lift control mechanism 5 further includes a safety control assembly 54 disposed between the carrier connector 41 and the frame connector 3. The safety control assembly 54 is configured to prevent the carrier connector 41 from separating from the frame connector 3 during the process of adjusting the carrier connector 41 relative to the frame connector 3. It is also configured to be coupled with the unlocking action of the lift control operation group 53. In this embodiment, the safety control assembly 54 ensures that the carrier connector 41 and the frame connector 3 remain connected during the process of adjusting the carrier body. This means that the carrier connector can only move up and down and cannot completely separate from the frame connector, making the adjustment operation convenient and safe.

[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 avoidance notch 542, both of which are provided at the upper end of the frame connector 3; a safety sliding member 543 slidably provided on the vehicle connector and capable of interlocking with the unlocking action of the lifting control operation group 53; and a safety blocking block 544 provided on the safety sliding member 543 for interfering with the safety blocking member 541. The safety blocking block 544 is slidably provided on the safety sliding member 543, with a blocking block elastic member 545 provided between the safety blocking block 544 and the safety sliding member 543. A safety blocking ridge 546 extending in the vertical direction is provided on the frame connector 3, with the safety blocking member 541 and the safety avoidance notch 542 located on either side of the safety blocking ridge 546. When the vehicle connector needs to be removed from the frame connector, the user presses the safety sliding member 543 to slide radially, which controls the operation linkage seat 531 to slide vertically accordingly. The corresponding inclined wall of the strip unlocking inclined hole 5311 drives the linkage shaft rod to drive the lifting control lock member 52 to slide horizontally accordingly, so that the locking end of the lifting control lock member 52 is separated from the lifting control lock part 51. At the same time, the safety blocking block 544 slides accordingly with the safety sliding member 543, so that the safety blocking block 544 is misaligned with the safety blocking member 541 and cooperates with the safety avoidance notch 542. Then the user operates the vehicle connector to slide upward relative to the frame connector until the vehicle body is removed from the frame body. The operation is convenient.

[0064] like Figure 8 、 12As shown, the safety blocking block 544 has a blocking end portion 5441 and a blocking inclined portion 5442 for use in conjunction with the safety blocking ridge 546. During the unlocking process, the blocking inclined portion 5442 cooperates with the safety blocking ridge 546 to force the safety blocking block 544 to retract accordingly to facilitate unlocking; when the safety blocking block 544 cooperates with the safety avoidance notch 542, the blocking end portion 5441 cooperates with the safety blocking ridge 546 to limit the sliding reset of the safety sliding member 543, so there is no need for the user to press the safety sliding member all the time, that is, when the pressing force on the safety sliding member 543 is withdrawn, the safety blocking block 544 always remains in conjunction with the safety avoidance notch 542, which is convenient for subsequent disassembly and has a reasonable design.

[0065] like Figure 8-10 As shown in Figures 16 and 17, for the convenience of operation and better linkage to the unlocking of the frame connector, the connector unlocking assembly 31 includes a connector unlocking push piece 311, a connector unlocking linkage group 312 and a connector unlocking piece 313. The connector unlocking push piece 311 can be slidably arranged 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 piece 313 can both be movably arranged on the frame connector 3. The connector unlocking push piece 311 is linked with the connector unlocking piece 313 through the connector unlocking linkage group 312, and the connector unlocking piece 313 is linked with the connector locking assembly 30.

[0066] like Figure 8-10As shown in Figures 16 and 17, in order to efficiently convert the direction of movement, simplify the transmission path, and improve the transmission stability, the connector unlocking linkage group 312 includes a connector unlocking linkage member 1 3121, a connector unlocking linkage member 2 3122, and a connector unlocking linkage oblique portion 3123. The connector unlocking linkage member 1 3121 can be laterally slidably arranged on the frame connector 3 and is linked to the connector unlocking push member 311. The connector unlocking linkage member 2 3122 can be vertically slidably arranged on the frame connector 3. The connector unlocking linkage oblique portion 3123 is respectively arranged on the connector unlocking linkage member 1 3121 and the connector unlocking linkage member 2 3122 and can cooperate with each other; the connector unlocking linkage member 2 3122 is linked to the connector unlocking member 313. When the vehicle body is in the process of unlocking the seat frame, the backrest portion 43 is flipped and folded forward relative to the seat portion 42, and the connector unlocking driving portion 310 on the lower end of the backrest portion 43 drives the connector unlocking pushing member 311 to slide horizontally relative to the vehicle connector 41. The pushing end of the connector unlocking pushing member 311 presses the connector unlocking linkage member 1 3121 to slide horizontally relative to the frame connector 3. The connector unlocking linkage member 2 3122 slides vertically relative to the frame connector 3 under the cooperation of the two connector unlocking linkage oblique portions 3123. The connector unlocking linkage member 2 3122 links the connector unlocking member 313 to slide horizontally through two mutually cooperating unlocking linkage oblique walls, so that the connector unlocking member 313 pushes 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.

[0067] like Figure 14-18 As shown, in order to ensure reliable and stable locking, the connector locking assembly 30 includes a connector locking groove 301 respectively provided on the opposite sides of the frame connector 3 and the frame joint 2, and a connector locking gear 302 which is slidably provided between the frame connector 3 and the frame joint 2 and can be simultaneously engaged with the connector locking groove 301 on the frame connector 3 and the frame joint 2. A connector locking elastic member 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 to the connector unlocking member 313.

[0068] like Figure 18-24As shown, in order to ensure the stability and reliability of the structure and the convenience of folding and unfolding, the frame joint 2 includes a front foot joint block 111 provided at the upper end of the front foot rod 11, a rear foot joint block 121 provided at the upper end of the rear foot rod 12, and a push rod joint block 131 provided at the lower end of the hand push rod 13. The front foot joint block 111 and the push rod joint block 131 are respectively rotatably connected to the rear foot joint block 121. A joint linkage 14 is provided between the front foot joint block 111 and the push rod joint block 131. 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.

[0069] like Figure 18-24 As shown, in order to ensure reliable locking, the frame locking assembly 20 includes a frame locking part 201 provided on the front foot joint block 111 and / or the push rod joint block 131 and a frame locking member 202 slidably provided on the rear foot joint block 121 and used to lock with the frame locking part 201, and a frame locking elastic member is provided between the frame locking member 202 and the rear foot joint block 121; the frame unlocking assembly 21 includes a frame unlocking member provided on the frame connector 3 and linked to 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 member cooperates with the two unlocking linkage inclined walls to drive the frame locking member 202 to slide downward relative to the rear foot joint block 121, so that the locking end of the rear foot joint block 121 is separated from the frame locking portion 201. At this time, the hand push rod 13 is folded downward toward the side of the rear foot rod under the action of its own gravity or external force, and the hand push rod 13 is correspondingly linked to the front foot rod 11 through the joint linkage member 14 to fold backward toward the side of the rear foot rod.

[0070] like Figure 1 、 2As shown in Figures 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 member 211 and a reverse frame unlocking member 212 provided on the frame connector 3. A switching linkage assembly 22 for switching the working states of the forward frame unlocking member 211 and the reverse frame unlocking member 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 unlocks the forward frame. When the carrier body 4 is in the reverse installation state, the switching linkage assembly 22 switches the forward frame unlocking member 211 and the reverse frame unlocking member 212 to: the reverse frame unlocking member 212 is linked to the frame locking assembly 20, and the linkage between the reverse frame unlocking member 212 and the frame locking assembly 20 is released. When the carrier body 4 is in the reverse installation state, the switching linkage assembly 22 switches the forward frame unlocking member 211 and the reverse frame unlocking member 212 to: the reverse frame unlocking member 212 is linked to the frame locking assembly 20, and the linkage between the forward frame unlocking member 211 and the frame locking assembly 20 is released. Through this "ready-to-install" automated design, the user only needs to adjust the direction of the carrier body without having to operate the unlocking member. This 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 strollers, providing users with a more efficient, safe, and worry-free children's stroller experience.

[0071] like Figure 1 、 2 As shown in Figures 11, 13-16, the switching linkage assembly 22 includes but is not limited to a forward transmission member 221 that is vertically slidably provided on the frame connector 3 and is configured to be linked to the forward frame unlocking member 211, and a forward pressing member 222 that is transversely slidably provided on the frame connector 3 and is configured to be linked to 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 slidably provided on the frame connector 3 and is configured to be linked to the reverse frame unlocking member 212, and a reverse pressing member 224 that is transversely slidably provided on the frame connector 3 and is configured to be linked to the reverse transmission member 223. The switching linkage assembly 22 also includes but is not limited to a switching linkage driving portion 225 that is provided on the vehicle connector 41 and is configured to be linked to the forward pressing member 222 or the reverse pressing member 224. When the vehicle body 4 is in the forward installation state, the switching linkage drive unit 225 is linked to the reverse pressing member 224, causing the reverse frame unlocking member 212 to be retracted into the frame connector, thereby 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 installation state, the switching linkage drive unit 225 is linked to the forward pressing member 222, causing the forward frame unlocking member 211 to be retracted into the frame connector, thereby 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 linked folding, the carrier body 4 is a seat frame, including a seat portion 42 and a backrest portion 43. The rear end of the seat portion 42 is relatively fixedly connected to the carrier connector 41, and the lower end of the backrest portion 43 is directly or indirectly rotatably connected to the carrier connector 41. A backrest locking mechanism 431 is provided between the backrest portion 43 and the carrier connector 41 for locking the backrest portion 43 relative to the carrier connector 41, and a backrest unlocking mechanism 432 is provided on the backrest portion 43 for being linked with the backrest locking mechanism 431; the connector unlocking component 31 is configured to trigger the linkage when the backrest portion 43 is flipped and folded to a preset angle relative to the carrier connector 41, thereby linking the connector locking component 30 to release the locked state.

[0073] like Figure 8 、 9 As shown, to ensure 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 vehicle connector 41 or the seat portion 42, and a backrest locking block 4312 slidably provided at the lower end of the backrest portion 43 for lockingly engaging with the backrest locking groove 4311. A backrest locking elastic member is provided between the backrest locking block 4312 and the lower end of the backrest portion 43 for elastically resetting the backrest locking block 4312. The backrest locking block 4312 is interlocked with the backrest unlocking mechanism 432. To facilitate unlocking, the backrest unlocking mechanism 432 includes but is not limited to a backrest unlocking wrench provided on the backrest portion 43, which is interlocked with the backrest locking block 4312 via a backrest unlocking pull cord. When unlocking, the user operates the backrest unlocking wrench to move relative to the backrest portion 43, and the backrest unlocking wrench drives the backrest locking block 4312 to slide accordingly through the backrest unlocking rope, so that the backrest locking block 4312 is separated from the backrest locking groove 4311.

[0074] In order to adapt to the riding needs of infants and young children of different heights and weights and provide a good and comfortable riding space, a plurality of backrest locking grooves 4311 are arranged at circumferential intervals on the rear end of the seat part. The backrest locking block 4312 is locked with the corresponding backrest locking groove 4311 to adjust the inclination angle of the backrest relative to the seat part accordingly.

[0075] like Figure 1-9As shown, in order to facilitate unlocking, the seat frame also includes an armrest rod 40, the lower end of which is rotatably connected to the vehicle connector 41 or the rear end of the seat portion 42, and an armrest locking assembly 401 is provided between the lower end of the armrest rod 40 and the rear end of the seat portion 42 for locking the armrest rod 40 in an unfolded use state relative to the rear end of the seat portion 42. The armrest locking assembly 401 is configured to be linked to its unlocking action by the backrest portion 43 when the backrest portion 43 is flipped and folded to a preset angle relative to the vehicle connector 41. The armrest locking assembly 401 includes, but is not limited to, an armrest locking portion 4011 disposed on the vehicle connector 41 and an armrest locking block 4012 slidably disposed at the lower end of the armrest bar 40 and configured to engage with the armrest locking portion 4011. An armrest locking elastic member 4013 is disposed between the armrest locking block 4012 and the armrest bar 40 for resiliently returning the armrest locking block 4012 to its original position. An armrest unlocking driving bevel 402 is disposed at the lower end of the backrest portion 43 for interlocking with the armrest locking block 4012. When the backrest portion 43 is tilted and folded relative to the vehicle connector 41 to a predetermined angle, the armrest unlocking driving bevel 402 causes the armrest locking block 4012 to slide accordingly, separating the locking end of the armrest locking block 4012 from the armrest locking portion 4011, thereby releasing the armrest bar 40 from the vehicle connector 41. At this point, the armrest bar 40 can be tilted and folded toward the seat portion 42.

[0076] like Figure 1-6As shown, when the carrier body is folded as a seat frame, the user operates the backrest unlocking wrench to move correspondingly relative to the backrest, and the backrest unlocking wrench drives the backrest locking block 4312 to slide correspondingly through the backrest unlocking rope, so that the backrest locking block 4312 is separated from the backrest locking groove 4311; the backrest portion 43 is operated to flip and fold toward the seat portion 42 side relative to the carrier connector 41, and the connector unlocking driving portion 310 of the backrest portion 43 drives the connector unlocking pushing member 311 to slide horizontally correspondingly relative to the carrier connector 41, and the pushing end of the connector unlocking pushing member 311 presses the connector unlocking linkage member 1 312 1 slides horizontally relative to the frame connector 3, and the second connector unlocking linkage member 3122 slides vertically relative to the frame connector 3 under the cooperation of the two connector unlocking linkage oblique portions 3123. The second connector unlocking linkage member 3122 links the connector unlocking member 313 to slide horizontally accordingly through the two mutually cooperating unlocking linkage oblique walls, so that the connector unlocking member 313 pushes the connector locking gear 302 to slide horizontally accordingly, 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, the frame connector 3 is rotated relative to the frame joint under the drive of the folded carrier body as a whole, so that the forward frame unlocking member 211 or the reverse frame unlocking member 212 drives the frame locking member 202 to slide vertically relative to the rear foot joint block 121 through the two mutually linked frame unlocking inclined portions, that is, the frame locking member 202 is separated from the frame locking portion 201, thereby releasing the locking state of the front foot rod and the hand push rod relative to the rear foot rod. Then, the hand push rod is rotated downward toward the rear foot rod and folded. The hand push rod is linked to the front foot rod through the joint linkage member 14 so that the front foot rod is rotated backward toward the rear foot rod, thereby completing the folding operation of the entire baby stroller. Figure 6 shown.

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

[0078] like Figure 25-31 As shown, the carrying assembly 45 includes a front bottom plate 451, a transition connecting plate 452 and a rear bottom plate 453. The front side of the transition connecting plate 452 is rotatably connected to the rear side of the front bottom plate 451, and the rear side of the transition connecting plate 452 is rotatably connected to the front side of the rear bottom plate 453. The sleeping basket linkage assembly 46 is rotatably connected to the front bottom plate 451, the rear bottom plate 453 and the surrounding tube assembly 44 respectively, and the sleeping basket linkage assembly 46 is relatively fixedly connected to the transition connecting plate 452. When the front surrounding tube 441 and the rear surrounding tube 442 are folded toward each other, the front bottom plate 451 and the rear bottom plate 453 are folded toward each other relative to the front surrounding tube 441 and the rear surrounding tube 442 respectively. In this embodiment, the surrounding tube assembly is linked with the supporting assembly through the sleeping basket linkage assembly. That is, when the front surrounding tube and the rear surrounding tube are folded toward each other, the sleeping basket linkage assembly will synchronously pull the front bottom plate to fold close to the front surrounding tube, and the rear bottom plate to fold close to the rear surrounding tube, so that the folding actions of the surrounding tube assembly and the supporting assembly are completely synchronized, which can effectively ensure that the movement trajectories of various components are consistent during the folding process of the sleeping basket, avoid the misalignment or suspension of the supporting assembly and the surrounding tube assembly, and finally realize "stacked" storage - the surrounding tube and the bottom plate fit tightly together, greatly reducing the storage volume, significantly improving space utilization, and at the same time having the characteristics of convenient storage, safety and reliability.

[0079] In this embodiment, the sleeping basket linkage assembly rigidly couples the rotation of the surrounding tube assembly with the flipping of the load-bearing assembly. The user only needs to trigger the surrounding tube unlocking mechanism with one hand, and the front and rear surrounding tubes will automatically fold toward the center. The front bottom plate, transition connecting plate and rear bottom plate will simultaneously complete the three-stage overlapping. No secondary action is required throughout the process, avoiding the risk of hand pinching. The reverse unfolding can also be completed in one step, with the functions of efficient storage and unfolding, and simple and convenient operation.

[0080] In order to make the folding more compact and minimize the space occupied by the entire sleeping cot after folding, the sleeping cot linkage assembly 46 is further configured so that when the front surrounding tube 441 and the rear surrounding tube 442 move toward each other and fold, the front bottom plate 451 and the rear bottom plate 453 move toward and fold relative to the front surrounding tube 441 and the rear surrounding tube 442 respectively, and the vertical distance between the rotation axis between the front surrounding tube 441 and the rear surrounding tube 442 and the transition connecting plate 452 becomes smaller, as shown in FIG. Figure 26 、 27 shown.

[0081] like Figure 25-31 As shown, the perimeter 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 perimeter tube 441, and the rear joint block 472 is connected to the rear perimeter tube 442. A joint drive portion 473 is formed on the front joint block 471 or the rear joint block 472, which extends toward the rear joint block 472 or the front joint block 471. The sleeping basket linkage assembly 46 is rotatably connected to the end of the joint drive portion 473. In this embodiment, the sleeping basket linkage assembly 46 is directly acted on by the joint drive portion 473, which effectively simplifies the transmission chain and improves the response efficiency. Among them, the joint drive portion 473 is integrally formed or fixedly connected to the front joint block 471, without the need for an additional external transmission mechanism, significantly reducing the lateral / longitudinal dimensions of the front joint block 471, enhancing the compactness of the structure, and saving space. In order to ensure reliable locking, the front joint block 471 and the rear joint block 472 can be locked by means of locking grooves and locking blocks.

[0082] like Figure 30 、 31 As shown, in this embodiment, the connector unlocking drive part 310 is arranged on the front joint block 471, and the connector unlocking drive part 310 and the connector unlocking push piece 311 are linked by the push linkage block 1 3111 and the push linkage block 2 3112. The push linkage block 1 3111 can be slidably arranged on the rear joint block 472 and is linked with the connector unlocking drive part 310, and the push linkage block 2 3112 can be vertically slidably arranged on the carrier connector 41 and is linked with the connector unlocking push piece 311, and the push linkage block 2 3112 and the push linkage block 1 3111 are linked by a push linkage rope. When the front surrounding tube 441 or the rear surrounding tube 442 is flipped and folded to a preset angle, the connector unlocking driving part 310 drives the pushing linkage block 1 3111 to drive the pushing linkage block 2 3112 to slide vertically, and the pushing linkage block 2 3112 drives the connector unlocking pushing member 311 to slide horizontally accordingly through the cooperation of the two pushing linkage oblique parts, thereby causing the connector unlocking pushing member 311 to press the connector unlocking linkage member 1 3121 of the connector unlocking linkage group 312.

[0083] like Figure 25-31As shown, the sleeping basket linkage assembly 46 includes but is not limited to a front upper link 461, a front lower link 462, an intermediate 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 enclosure 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 bottom plate 451; the upper end of the intermediate link 463 is rotatably connected to the rear enclosure tube 442, and the lower end of the intermediate link 463 is rotatably connected to the transition link The connecting plate 452 is relatively fixedly connected; the upper end of the rear connecting rod 464 is rotatably connected to the rear surrounding 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 driving part 473, and the rear end of the first linkage rod 465 is rotatably connected to the middle or upper part of the intermediate link 463; the front end of the second linkage rod 466 is rotatably connected to the middle or lower part of the front upper link 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 utilizes a multi-link collaborative design to form a triple linkage system: "front wall tube - front upper link - front lower link - front floor plate," "rear wall tube - intermediate link - transition plate - rear link - rear floor plate," and "front wall tube - first linkage link - intermediate link - rear wall tube." This ensures that when the front and rear wall tubes fold toward each other, the folding angles and speeds of the front floor plate and front wall tube, and the rear floor plate and rear wall tube, are completely consistent. Specifically, as the front upper link rotates with the front wall tube, it directly pulls the front floor plate, via the front lower link, to synchronously fold toward the inside of the front wall tube. The first linkage link transmits the rotational force of the joint drive unit of the front wall tube to the intermediate link, driving the synchronous folding of the rear wall tube, transition plate, and rear floor plate. The second linkage link connects the front upper link and the first linkage link, further constraining the rotational angles of the front and rear wall tubes and preventing deviations in movement due to manufacturing tolerances or external interference. Ultimately, this achieves the effect of "four-link synchronous motion," significantly improving the consistency of the folding action and making the folded sleeping cot structure more compact.

[0084] like Figure 25-27As shown, when the carrier body is folded into a sleeping basket, the user operates the front tube 441 to flip and fold it relative to the rear tube 442 to a preset angle, and the connector unlocking driving part 310 drives the pushing linkage block 1 3111 to drive the pushing linkage block 2 3112 to slide vertically, and the pushing linkage block 2 3112 drives the connector unlocking pushing member 311 to slide horizontally accordingly through the cooperation of the two pushing linkage oblique parts, thereby causing the connector unlocking pushing member 311 to press the connector unlocking linkage member 1 3121 of the connector unlocking linkage group 312, and the connector unlocking pushing member 311 to press the connector unlocking linkage member 1 3121 of the connector unlocking linkage group 312. The second unlocking linkage member 3122 slides vertically relative to the frame connector 3 under the cooperation of the two connector unlocking linkage oblique portions 3123. The second connector unlocking linkage member 3122 links the connector unlocking member 313 to slide horizontally through two mutually cooperating unlocking linkage oblique walls, so that the connector unlocking member 313 pushes 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, the frame connector 3 is rotated relative to the frame joint under the drive of the folded carrier body as a whole, so that the forward frame unlocking member 211 or the reverse frame unlocking member 212 drives the frame locking member 202 to slide vertically relative to the rear foot joint block 121 through the two mutually linked frame unlocking inclined portions, that is, the frame locking member 202 is separated from the frame locking portion 201, thereby releasing the locking state of the front foot rod and the hand push rod relative to the rear foot rod. Then, the hand push rod is rotated downward toward the rear foot rod and folded. The hand push rod is linked to the front foot rod through the joint linkage member 14 so that the front foot rod is rotated backward toward the rear foot rod, thereby completing the folding operation of the entire baby stroller. Figure 6 shown.

Claims

1. A baby carriage that is easy to fold together with the frame, characterized in that include: The frame body (1) has the functions of unfolding and folding. The frame body (1) includes a front foot rod (11), a rear foot rod (12) and a push rod (13). The upper end of the front foot rod (11), the upper end of the rear foot rod (12) and the lower end of the push rod (13) are rotatably connected through a frame joint (2). The frame joint (2) is connected to a frame connector (3). A frame locking assembly (20), the frame locking assembly (20) being arranged on the frame joint (2) and being used to lock the frame body (1) in an unfolded use state; A carrier body (4) has the functions of unfolding and folding, and a carrier connector (41) is provided on the carrier body (4), and the carrier body (4) is connected to the frame connector (3) via the carrier connector (41); The carrier body (4) has a plurality of height adjustment gears relative to the frame joint (2), and when the carrier body (4) is at any height adjustment gear relative to the frame joint (2), the frame joint (2) can be unlocked by the folding action of the carrier body (4) and the linked frame locking assembly (20).

2. A baby carriage according to claim 1, wherein the carrier and the frame are folded together in a coordinated manner, The frame connector (3) can be unlocked and rotatably connected to the frame joint (2), and the carrier connector (41) is relatively fixedly connected to the carrier body (4). During the folding process of the carrier body (4), the frame connector (3) can be linked to be unlocked relative to the frame joint (2). The carrier body (4) and the carrier connector (41) rotate as a whole to a preset angle relative to the frame joint (2) along with the frame connector (3) and the frame locking assembly (20) to be unlocked.

3. A baby carriage according to claim 2, wherein the carrier and the frame are folded together in a coordinated manner, A plurality of height adjustment gears are provided between the carrier connector (41) and the frame connector (3); when the carrier connector (41) is at any height adjustment gear relative to the frame connector (3), the frame locking assembly (20) can be unlocked by the carrier body (4) as a whole being rotated to a preset angle.

4. A baby stroller according to claim 1, wherein the carrier and the frame are folded together in a coordinated manner. The frame connector (3) is relatively fixedly connected to the frame joint (2), and the carrier connector (41) can be unlocked and rotatably connected to the carrier body (4). During the folding process of the carrier body (4), the carrier connector (41) can be linked to be unlocked relative to the carrier body (4). The carrier body (4) rotates to a preset angle relative to the carrier connector (41) and the frame connector (3) as a whole, thereby linking the frame locking assembly (20) to be unlocked.

5. A baby carriage according to claim 4, wherein the carrier and the frame are folded together in a coordinated manner. A plurality of height adjustment gears are provided between the carrier body (4) and the carrier connector (41). When the carrier body (4) is at any height adjustment gear relative to the carrier connector (41), the frame locking assembly (20) can be unlocked by being rotated as a whole by the carrier body (4) to a preset angle.

6. A baby stroller according to claim 3, wherein the carrier and the frame are folded together in a coordinated manner. 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) arranged in linkage with the frame locking assembly (20) is provided on the frame connector (3); a connector unlocking assembly (31) arranged in linkage with the connector locking assembly (30) is provided between the vehicle body (4) and the frame connector (3); 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 to a preset angle relative to the frame joint (2), the frame unlocking assembly (21) is triggered to move, thereby linking the frame locking assembly (20) to release the locked state for folding the vehicle.

7. A baby stroller with a carrier and a frame that can be folded together in a coordinated manner according to claim 1, 2, 3, 4, or 6, characterized in that A lifting control mechanism (5) is provided between the carrier body (4) and the frame joint (2) so that the carrier body (4) can be adjusted to multiple gears relative to the frame joint (2).

8. A baby carriage according to claim 7, wherein the carrier and the frame are folded together in a coordinated manner. The lifting control mechanism (5) is located between the carrier connector (41) and the frame connector (3), and includes a lifting control lock portion (51), a lifting control lock element (52), and a lifting control operation group (53); a plurality of the lifting control lock portions (51) are arranged on the frame connector (3) at intervals in the upper and lower directions, the lifting control lock element (52) is slidably arranged on the carrier connector (41) and is used to lock and cooperate with the corresponding lifting control lock portion (51), and the lifting control operation group (53) is movably arranged on the carrier connector (41) and is arranged in a linkage with the lifting control lock element (52).

9. A baby carriage according to claim 8, wherein the carrier and the frame are folded together in a coordinated manner. The lifting control operation group (53) comprises a control operation linkage seat (531) and a control operation rod (532). The control operation linkage seat (531) can be vertically slidably arranged on the carrier connector (41) and is linked to the lifting control lock (52). The control operation rod (532) can be vertically slidably arranged on the carrier connector (41) and is linked to the control operation linkage seat (531).

10. A baby carriage according to claim 6, wherein the carrier and the frame are folded together in a coordinated manner. The connector unlocking assembly (31) comprises a connector unlocking pushing member (311), a connector unlocking linkage group (312) and a connector unlocking member (313); the connector unlocking pushing member (311) is slidably arranged 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 member (313) are both movably arranged on the vehicle frame connector (3); the connector unlocking pushing member (311) is linked to the connector unlocking member (313) through the connector unlocking linkage group (312); and the connector unlocking member (313) is linked to the connector locking assembly (30).

11. A baby carriage according to claim 10, wherein the carrier and the frame are folded together in a coordinated manner. The connector unlocking linkage group (312) comprises a connector unlocking linkage member 1 (3121), a connector unlocking linkage member 2 (3122), and a connector unlocking linkage oblique portion (3123); the connector unlocking linkage member 1 (3121) can be laterally slidably arranged on the vehicle frame connector (3) and is linked to the connector unlocking push member (311); the connector unlocking linkage member 2 (3122) can be vertically slidably arranged on the vehicle frame connector (3); the connector unlocking linkage oblique portion (3123) is respectively arranged on the connector unlocking linkage member 1 (3121) and the connector unlocking linkage member 2 (3122) and can cooperate with each other; the connector unlocking linkage member 2 (3122) is linked to the connector unlocking member (313).

12. A baby carriage according to claim 10 or 11, wherein the carrier and the frame are folded together in a coordinated manner. The connector locking assembly (30) comprises 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 being simultaneously engaged with the connector locking grooves (301) on the frame connector (3) and the frame joint (2); a connector locking elastic member for driving the connector locking gear (302) to elastically reset is provided between the connector locking gear (302) and the frame joint (2); and the connector locking gear (302) is linked to a connector unlocking member (313).

13. A baby carriage according to claim 6, wherein the carrier and the frame are folded together in a coordinated manner. The frame joint (2) comprises a front foot joint block (111) provided at the upper end of the front foot rod (11), a rear foot joint block (121) provided at the upper end of the rear foot rod (12), and a push rod joint block (131) provided at the lower end of the hand 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) respectively. A spacer is provided between the front foot joint block (111) and the push rod joint block (131). There is a 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); and 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 baby carriage according to claim 13, wherein the carrier and the frame are folded together in a coordinated manner. The frame locking assembly (20) comprises a frame locking portion (201) provided on a front foot joint block (111) and / or a push rod joint block (131) and a frame locking member (202) slidably provided on a rear foot joint block (121) and used for locking with the frame locking portion (201); a frame locking elastic member is provided between the frame locking member (202) and the rear foot joint block (121); and the frame unlocking assembly (21) comprises a frame unlocking member provided on a frame connector (3) and linked to the frame locking member (202).

15. A baby carriage according to claim 6, wherein the carrier and the frame are folded together in a coordinated manner. The vehicle body (4) has a forward installation state and a reverse installation state. The frame unlocking assembly (21) includes a forward frame unlocking member (211) and a reverse frame unlocking member (212) provided on the frame connector (3). A switching linkage assembly (22) for switching the working states of the forward frame unlocking member (211) and the reverse frame unlocking member (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) switches the forward frame unlocking member (211) to the reverse frame unlocking member (212). The switching linkage assembly (22) switches the forward frame unlocking member (211) and the reverse frame unlocking member (212) to: the forward frame unlocking member (211) and the frame locking assembly (20) are linked together, and the linkage between the reverse frame unlocking member (212) and the frame locking assembly (20) is released; when the vehicle body (4) is in the reverse installation state, the switching linkage assembly (22) switches the forward frame unlocking member (211) and the reverse frame unlocking member (212) to: the reverse frame unlocking member (212) and the frame locking assembly (20) are linked together, and the linkage between the forward frame unlocking member (211) and the frame locking assembly (20) is released.

16. A baby carriage according to claim 6, wherein the carrier and the frame are folded together in a coordinated manner. The carrier body (4) is a seat frame, comprising a seat portion (42) and a backrest portion (43); the rear end of the seat portion (42) is relatively fixedly connected to the carrier connector (41); the lower end of the backrest portion (43) is directly or indirectly rotatably connected to the carrier connector (41); a backrest locking mechanism (431) for locking the backrest portion (43) relative to the carrier connector (41) is provided between the backrest portion (43) and the carrier connector (41); a backrest unlocking mechanism (432) for being linked to the backrest locking mechanism (431) is provided on the backrest portion (43); the connector unlocking assembly (31) is configured to trigger a linkage when the backrest portion (43) is flipped and folded to a preset angle relative to the carrier connector (41), thereby linking the connector locking assembly (30) to release the locked state.

17. A baby carriage according to claim 6, wherein the carrier and the frame are folded together in a coordinated manner. The carrier body (4) is a sleeping basket, comprising: A surrounding tube assembly (44), the surrounding tube assembly (44) comprising a front surrounding tube (441) and a rear surrounding tube (442) that can be folded toward each other or unfolded in opposite directions, and the front surrounding tube (441) and the rear surrounding tube (442) are rotatably connected; A carrying assembly (45), wherein the carrying assembly (45) has the functions of unfolding and folding; A sleeping basket linkage assembly (46), wherein the sleeping basket linkage assembly (46) is located between the surrounding tube assembly (44) and the bearing assembly (45); A peri-tube joint (47), the peri-tube joint (47) being located between the front peri-tube (441) and the rear peri-tube (442) and being used to lock the front peri-tube (441) relative to the rear peri-tube (442); A surrounding tube unlocking mechanism (48), the surrounding tube unlocking mechanism (48) is provided on the front surrounding tube (441) or the rear surrounding tube (442), and is arranged in linkage with the surrounding tube joint (47) to release the locking state of the front surrounding tube (441) relative to the rear surrounding tube (442) by linkage with the surrounding tube joint (47); The carrier connector (41) is provided on the surrounding tube assembly (44) or the carrying assembly (45); The connector unlocking assembly (31) is configured to trigger a linkage when the front surrounding tube (441) or the rear surrounding tube (442) is flipped and folded to a preset angle, thereby linking the connector locking assembly (30) to release the locked state.

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