A linkable folding frame and a baby stroller

Abstract

This invention discloses a foldable stroller frame and baby stroller, comprising: a handle mechanism, a front leg mechanism, a rear leg mechanism, a bottom linkage bracket, and a linkage rod, all spaced apart and connected to the frame folding joint mechanism; the frame folding joint mechanism and the handle mechanism form a first rotation center; the front leg mechanism and the frame folding joint mechanism are hinged to form a second rotation center; the bottom linkage bracket includes a front support rod and a rear support rod hinged to each other to form a third rotation center, the front support rod and the front leg mechanism are hinged to form a fourth rotation center, and the rear leg mechanism and the rear support rod are hinged to form a fifth rotation center; the handle mechanism is provided with an internal unlocking mechanism, which drives the frame folding joint mechanism to rotate, causing the frame to fold around each rotation center in a coordinated manner, enabling automatic folding of the frame with one hand, resulting in a simple structure and convenient folding.

Description

Technical Field

[0001] This invention relates to the field of baby stroller technology, and more particularly to a foldable stroller frame and a baby stroller. Background Technology

[0002] Baby strollers have become an indispensable product in the growth process of infants and young children. People have higher and higher requirements for the functionality of baby strollers, especially the desire for them to be foldable when not in use, so as to facilitate storage, carrying and travel.

[0003] Most existing strollers are designed with a foldable structure, but the folding structure of current foldable strollers is complicated and requires many steps. Often, the stroller's armrests, backrest, seat, and support legs need to be folded separately, which is cumbersome and cannot be folded all at once, causing inconvenience. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide a foldable stroller frame and baby stroller that can be automatically folded with one hand, featuring a simple structure and convenient folding.

[0005] In view of this purpose, embodiments of the present invention provide a foldable frame with linkage, comprising: a handlebar mechanism, a front leg mechanism, a rear leg mechanism, a bottom linkage bracket, and a linkage rod that are spaced apart and connected to a frame folding joint mechanism; the frame folding joint mechanism and the handlebar mechanism form a first rotation center; the front leg mechanism and the frame folding joint mechanism are hinged to form a second rotation center; the bottom linkage bracket includes a front support rod and a rear support rod that are hinged to each other to form a third rotation center, the front support rod and the front leg mechanism are hinged to form a fourth rotation center, and the rear leg mechanism and the rear support rod are hinged to form a fifth rotation center;

[0006] One end of the linkage rod is hinged to the side of the frame folding joint mechanism that is offset from its axis, and the other end of the linkage rod is hinged to the bottom linkage bracket.

[0007] The handlebar mechanism is equipped with an internal unlocking mechanism, which drives the frame folding joint mechanism to rotate so that the frame folds.

[0008] Furthermore, the handle mechanism includes an upper handle rod and a lower handle rod hinged to the handle folding joint assembly, and a handrail connected to the upper end of the upper handle rod, with the internal unlocking mechanism disposed within the handrail.

[0009] Furthermore, the handlebar folding joint assembly includes a handlebar folding joint upper cover and a handlebar folding joint lower cover, the handlebar folding joint upper cover being disposed on one side of the handlebar folding joint lower cover; the handlebar folding joint upper cover includes an upper half cover body and a support portion disposed on the upper half cover body, the support portion being used to support the bottom surface after the frame is folded.

[0010] Furthermore, the internal unlocking mechanism includes a pressing component, a first pull rope, and a second pull rope. The two ends of the pressing component are respectively connected to a first pull rope. The first pull rope extends downward along the two upper handlebars and engages with the two handlebar folding joint components. The two second pull ropes are engaged within the two handlebar folding joint components and positioned below the first pull rope. The lower ends of the second pull ropes are connected to the frame folding joint mechanism.

[0011] Furthermore, the frame folding joint mechanism includes a frame joint cover that connects to the handlebar mechanism and a rear joint cover that connects to the front leg mechanism and the rear leg mechanism;

[0012] The frame joint cover includes a joint cover, a cover connector connected to the joint cover and the handlebar mechanism, and a connecting post connected to the seat support rod.

[0013] The rear joint cover is provided with a first connector and a second connector. The first connector is hinged to the front foot mechanism; the second connector is fixedly connected to the rear foot mechanism; and the frame joint cover is fixed to the handlebar mechanism.

[0014] Furthermore, the frame joint cover and the rear joint cover are connected by a shaft. A first rotating shaft is provided at the axis of the frame joint cover. A joint unlocking component, a joint rotating tooth, and a joint elastic component are sleeved on the first rotating shaft. A groove structure that meshes with the joint rotating tooth is provided on one side of the handlebar joint cover. The joint unlocking component is fixed to one side of the joint rotating tooth, and the joint elastic component is provided on the outer periphery of the joint rotating tooth.

[0015] Furthermore, the handle retractable joint assembly includes a bending joint upper cover and a bending joint lower cover. The bending joint upper cover has a second rotating shaft at its center. A bending unlocking component, a bending joint tooth, and a joint unlocking rotating component are sleeved on the second rotating shaft. A second driving protrusion connected to the joint unlocking rotating component and a second groove structure meshing with the bending joint tooth are provided on one side of the bending joint upper cover. A limit block is provided on one side of the bending joint lower cover, and an outer cover seat is provided on one side of the limit block.

[0016] Furthermore, a seat support rod is hinged to the front end of the bottom linkage bracket, the seat support rod is hinged to the fourth rotation center, and the other end of the seat support rod is hinged to the base bracket.

[0017] Furthermore, the base bracket includes a footrest and a seat that are rotatably connected, and the side of the seat is hinged to one side of the frame joint cover via a base support member; the base support member and the linkage rod are spaced apart.

[0018] Additionally, a baby stroller is provided, including the aforementioned foldable frame.

[0019] The beneficial effects of the present invention: The embodiments of the present invention provide a foldable stroller frame and a baby stroller, comprising: a handle mechanism, a front leg mechanism, a rear leg mechanism, a bottom linkage bracket, and a linkage rod connected at intervals to the folding joint mechanism of the frame; the folding joint mechanism of the frame and the handle mechanism form a first rotation center; the front leg mechanism and the folding joint mechanism of the frame are hinged to form a second rotation center; the bottom linkage bracket includes a front support rod and a rear support rod hinged to each other to form a third rotation center, the front support rod and the front leg mechanism are hinged to form a fourth rotation center, and the rear leg mechanism and the rear support rod are hinged to form a fifth rotation center; the handle mechanism is provided with an internal unlocking mechanism, which drives the folding joint mechanism of the frame to rotate, so that the frame folds around each rotation center in a linked manner, so that the frame can be automatically folded with one hand, the structure is simple, and folding is convenient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a foldable frame that can be linked together, provided by an embodiment of the present invention.

[0022] Figure 2 A side view of the overall structure of a foldable frame provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of an internal unlocking component of a foldable frame that can be linked together, provided in an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the folded structure of a foldable frame provided in an embodiment of the present invention;

[0025] Figure 5 An exploded view of a folding joint mechanism for a foldable frame provided in an embodiment of the present invention;

[0026] Figure 6 An exploded view of a handlebar folding joint assembly for a foldable bicycle frame, provided in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the bending joint cover of a foldable frame provided in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of a frame joint cover for a foldable frame provided in an embodiment of the present invention.

[0029] In the figure: 1. Frame folding joint mechanism; 10. Frame joint cover; 101. Joint cover; 102. Cover connector; 103. Connecting post; 104. First drive protrusion; 105. First groove structure;

[0030] 11. Rear joint cover; 111. First connecting body; 112. Second connecting body; 12. Shaft; 13. First rotating shaft; 14. Joint unlocking component; 15. Joint rotating gear; 16. Joint elastic component;

[0031] 2. Handle mechanism; 20. Internal unlocking mechanism; 201. Pressing component; 202. First pull rope; 203. Second pull rope;

[0032] 21. Handle folding joint assembly; 210. Bending unlocking component; 211. Bending joint upper cover; 212. Bending joint lower cover; 2110. Upper cover body; 2111. Support part; 2112. Second pivot; 2113. Second drive protrusion; 2114. Second groove structure; 213. Bending joint tooth; 214. Joint unlocking rotating component; 215. Limiting block; 216. Outer cover seat;

[0033] 22. Handlebar up; 23. Handlebar down; 24. Handrail; 3. Front foot mechanism; 4. Rear foot mechanism;

[0034] 5. Bottom linkage bracket; 50. Front bracket rod; 51. Rear bracket rod;

[0035] 6. Linkage rod; 7. Seat support rod; 8. Base bracket; 80. Foot pedal; 81. Seat; 82. Base support component.

[0036] A. First center of rotation; B. Second center of rotation; C. Third center of rotation; D. Fourth center of rotation; E. Fifth center of rotation. Detailed Implementation

[0037] This invention provides a foldable stroller frame and baby stroller that can be automatically folded with one hand, with a simple structure and convenient folding.

[0038] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1:

[0041] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a foldable frame that can be linked together, provided as an embodiment of the present invention. Figure 1 and Figure 2 As shown, a foldable frame includes: a handlebar mechanism 2, a front leg mechanism 3, and a rear leg mechanism 4, which are spaced apart and connected to a frame folding joint mechanism 1; the frame folding joint mechanism 1 and the handlebar mechanism 2 form a first rotation center A; wherein the front leg mechanism 3 is hinged to the frame folding joint mechanism 1; the hinge point forms a second rotation center B; a bottom linkage bracket 5 is hinged to the front leg mechanism 3 and the rear leg mechanism 4 respectively, the bottom linkage bracket 5 includes a front support rod 50 and a rear support rod 51 that are hinged to each other, the hinge point of the front support rod 50 and the rear support rod 51 forms a third rotation center C, one end of a linkage rod 6 is hinged to the frame folding joint mechanism 1 at a position off its axis, the other end of the linkage rod 6 is hinged to the rear support rod 51 of the bottom linkage bracket 5, the hinge point of the bottom linkage bracket 5 and the front leg mechanism 3 forms a fourth rotation center D, and the hinge point of the rear leg mechanism 4 and the bottom linkage bracket 5 forms a fifth rotation center E. In addition, an internal unlocking mechanism 20 is provided on the handlebar part of the handlebar mechanism 2. The internal unlocking mechanism 20 drives the frame folding joint mechanism 1 to rotate so that the frame folds.

[0042] In a specific embodiment, pressing the internal unlocking mechanism 20 upward causes the handlebar mechanism 2 to fold, which in turn drives the frame folding joint mechanism 1 to rotate clockwise along the first rotation center A. This causes the linkage rod 6 to rotate upward and clockwise, and the linkage rod 6 to provide an upward pulling force to the rear support rod 51. This causes the front support rod 50 and the rear support rod 51 to bend upward along the third rotation center C. The bending of the front support rod 50 pulls the front foot mechanism 3 to bend along the second rotation center B. At the same time, the front support rod 50 and the rear support rod 51 rotate and fold along the fourth rotation center D and the fifth rotation center E, respectively, so that the entire frame can be folded up in a coordinated manner. The structure is simple, the operation is convenient, and it can be operated with one hand.

[0043] In addition, the bottom linkage bracket 5 can be used to place unused items, such as vegetable baskets, children's products, etc.

[0044] Furthermore, the handle mechanism 2 includes an upper handle rod 22 and a lower handle rod 23 hinged to the handle folding joint assembly 21, and a handrail 24 connected to the upper end of the upper handle rod 22; the internal unlocking mechanism 20 is disposed within the handrail 24.

[0045] In specific embodiments, such as Figure 1 As shown, the handlebar mechanism 2 includes an upper handlebar rod 22 and a lower handlebar rod 23 hinged to the handlebar folding joint assembly 21, and a handlebar 24 connected to the upper end of the upper handlebar rod 22, forming the handlebar mechanism 2 of the frame.

[0046] Furthermore, the handlebar folding joint assembly 21 includes a handlebar folding joint upper cover 211 and a handlebar folding joint lower cover 212. The handlebar folding joint upper cover 211 is disposed on one side of the handlebar folding joint lower cover 212. The handlebar folding joint upper cover 211 includes an upper cover body 2110 and a support portion 2111 disposed on the upper cover body 2110. The support portion 2111 is used to support the bottom surface after the frame is folded.

[0047] In a specific embodiment, the handle folding joint assembly 21's handle folding joint cover 211 is configured to mainly consist of an upper cover 2110 and a support part 2111. The support part 2111 is triangular in shape, or it can be other shapes. It can be supported on the bottom surface, so that the stroller can stand up, solving the inconvenience of ordinary strollers being placed on the ground after being folded.

[0048] Furthermore, the internal unlocking mechanism 20 includes a pressing component 201, with a first pull rope 202 connected to each end of the pressing component 201. The first pull rope 202 extends downward along the two upper handlebars 22 and engages with the bending unlocking component 210 in the handlebar folding joint assembly 21. A second pull rope 203 is engaged with the bending unlocking component 210 and positioned below the first pull rope 202. The lower end of the second pull rope 203 is connected to the joint unlocking component 14 in the frame folding joint mechanism 1.

[0049] In a specific embodiment, the internal unlocking mechanism 20 includes a pressing component 201 located in the middle of the handlebar 24. Each end of the pressing component 201 is connected to a first pull rope 202. The first pull rope 202 extends downwards along the two upper handlebar rods 22 and engages with the bending unlocking component 210 in the handlebar folding joint assembly 21. The joint unlocking component 14 is connected to a second pull rope 203, which extends upwards and is fixedly connected to the joint unlocking rotating component 214. By pressing the pressing component 201 upwards, the first pull rope 202 is lifted, driving the bending unlocking component 210 to unlock the handlebar folding joint assembly 21. When the handlebar folding joint assembly 21 rotates 90°, the second pull rope 203 is pulled upwards, causing the joint unlocking component 14 to rotate counterclockwise, thus causing the frame folding joint mechanism 1 to fold clockwise.

[0050] Furthermore, such as Figure 5 and Figure 8 As shown, the frame folding joint mechanism 1 includes a frame joint cover 10 that connects to the handlebar mechanism 2 and a rear joint cover 11 that connects to the front leg mechanism 3 and the rear leg mechanism 4.

[0051] The frame joint cover 10 includes a joint cover 101, a cover connector 102 connected to the joint cover 101 and the handlebar mechanism 2, and a connecting post 103 connected to the seat support rod 7; the rear joint cover 11 is provided with a first connector 111 and a second connector 112, the first connector 111 is hinged to the front leg mechanism 3; the second connector 112 is fixedly connected to the rear leg mechanism 4; the frame joint cover 10 and the handlebar mechanism 2 are fixed.

[0052] In a specific embodiment, by designing the frame joint cover 10 of the frame folding joint mechanism 1 and the rear joint cover 11 connecting the front foot mechanism 3 and the rear foot mechanism 4, the rear joint cover 11 and the frame joint cover 10 have two forms: relative rotation unlocking and relative rotation fixing.

[0053] Furthermore, such as Figure 5As shown, the frame joint cover 10 and the rear joint cover 11 are connected by a shaft 12. A first rotating shaft 13 is provided at the axis of the frame joint cover 10. A joint unlocking component 14, a joint rotating tooth 15 and a joint elastic component 16 are sleeved on the first rotating shaft 13. A first driving protrusion 104 connected to the joint unlocking component 14 and a first groove structure 105 meshing with the joint rotating tooth 15 are provided on one side of the handlebar joint cover 10. The joint unlocking component 14 is fixed to one side of the joint rotating tooth 15 and the joint elastic component 16 is provided on the outer periphery of the joint rotating tooth 15.

[0054] In a specific embodiment, a first pivot 13 is provided at the axis of the frame joint cover 10. A joint unlocking member 14, a joint rotating tooth 15, and a joint elastic member 16 are sequentially mounted on the first pivot 13 in the direction of the rear joint cover 11. The joint unlocking member 14 is pulled to rotate by the internal unlocking mechanism 20, so that the frame folding joint mechanism 1 is unlocked and rotated clockwise, which drives the joint rotating tooth 15 to rotate. Under the action of the joint elastic member 16 and gravity, the handlebar mechanism 2 automatically folds down.

[0055] Furthermore, such as Figure 6 and Figure 7 As shown, the handle folding joint assembly 21 includes a bending joint upper cover 211 and a bending joint lower cover 212. The bending joint upper cover 211 has a second rotating shaft 2112 at its center. The bending unlocking component 210, the bending joint tooth 213, and the joint unlocking rotating component 214 are sleeved on the second rotating shaft 2112. One side of the bending joint upper cover 211 has a second driving protrusion 2113 connected to the joint unlocking rotating component 214, and a second groove structure meshing with the bending joint tooth 213. One side of the bending joint lower cover 212 has a limiting block 215, and one side of the limiting block 215 has an outer cover seat 216.

[0056] In specific embodiments, such as Figure 3 and 5 As shown, the handle retractable joint assembly 21 includes a bending joint upper cover 211 and a bending joint lower cover 212. The bending joint upper cover 211 has a second rotating shaft 2112 at its center. The bending unlocking component 210, the bending joint tooth 213, and the joint unlocking rotating component 214 are sleeved on the second rotating shaft 2112. When the first pull rope 202 is pulled to give the joint unlocking rotating component 214 an upward force, the bending joint upper cover 211 is driven to rotate through the second driving protrusion 2113 and the bending joint tooth 213 is driven to rotate through the second groove structure 2114, so that the handle retractable joint assembly 21 rotates counterclockwise.

[0057] Furthermore, a seat support rod 7 is hinged to the front end of the bottom linkage bracket 5. The seat support rod 7 is hinged to the fourth rotation center D, and the other end of the seat support rod 7 is hinged to the base bracket 8.

[0058] In specific embodiments, such as Figure 1 As shown, the base bracket 8 is supported by the seat support rod 7, and rotates and folds around the fourth rotation center D as the front foot mechanism 3 rotates.

[0059] Furthermore, the base bracket 8 includes a foot pedal 80 and a seat 81 that are rotatably connected. The side of the seat 81 is hinged to one side of the frame joint cover 10 via a base support member 82. The base support member 82 and the linkage rod 6 are spaced apart.

[0060] In a specific embodiment, the base bracket 8 includes a foot pedal 80 and a seat 81 rotatably connected. The foot pedal 80 can be folded up by rotating through a pivot. The side of the seat 81 is hinged to one side of the frame joint cover 10 by a base support member 82. As the frame folding joint mechanism 1 rotates, the base support member 82 also rotates, causing the base bracket 8 to move upward and fold up. The linkage rods 6 are spaced apart, so that the seat support rod 7 and the linkage rod 6 rotate in the same direction without interfering with each other.

[0061] In summary, this invention provides a foldable frame with linkage, comprising: a handlebar mechanism, a front leg mechanism, a rear leg mechanism, a bottom linkage bracket, and a linkage rod, all spaced apart and connected to the frame folding joint mechanism; the frame folding joint mechanism and the handlebar mechanism form a first rotation center; the front leg mechanism and the frame folding joint mechanism are hinged to form a second rotation center; the bottom linkage bracket includes a front support rod and a rear support rod hinged to each other to form a third rotation center, the front support rod and the front leg mechanism are hinged to form a fourth rotation center, and the rear leg mechanism and the rear support rod are hinged to form a fifth rotation center; the handlebar mechanism is provided with an internal unlocking mechanism, which drives the frame folding joint mechanism to rotate, causing the frame to fold around each rotation center in a linkage manner, enabling automatic folding of the frame with one hand. The structure is simple, folding is convenient, and it can be placed vertically.

[0062] Example 2:

[0063] Additionally, a baby stroller is provided, including the aforementioned foldable frame.

[0064] In a specific embodiment, the linkage folding frame can be applied to any model of baby stroller. By adding other accessories to the baby stroller based on the linkage folding frame, the baby stroller can be folded with one hand and placed vertically after folding, which is very convenient.

[0065] In summary, the present invention provides a baby stroller including a foldable frame that can be linked together. By pulling the internal unlocking mechanism on the handle, the baby stroller can be driven to fold around each rotation center, so that the baby stroller can be automatically folded with one hand. The structure is simple, the folding is convenient, and it can be placed vertically.

[0066] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A foldable bicycle frame with linkage, characterized in that, include: A handlebar mechanism (2), a front foot mechanism (3), a rear foot mechanism (4), a bottom linkage bracket (5), and a linkage rod (6) are connected at intervals to the frame folding joint mechanism (1); the frame folding joint mechanism (1) and the handlebar mechanism (2) form a first rotation center; the front foot mechanism (3) and the frame folding joint mechanism (1) are hinged to form a second rotation center; the bottom linkage bracket (5) includes a front support rod (50) and a rear support rod (51) that are hinged to each other to form a third rotation center, the front support rod (50) and the front foot mechanism (3) are hinged to form a fourth rotation center, and the rear foot mechanism (4) and the rear support rod (51) are hinged to form a fifth rotation center; one end of the linkage rod (6) is hinged to the side of the frame folding joint mechanism (1) that is offset from its axis, and the other end of the linkage rod (6) is hinged to the bottom linkage bracket (5); The handlebar mechanism (2) is provided with an internal unlocking mechanism (20), which drives the frame folding joint mechanism (1) to rotate so that the frame folds. By pressing up the internal unlocking mechanism (20), the handlebar mechanism (2) folds up, causing the folding joint mechanism (1) of the frame to rotate clockwise along the first rotation center, which in turn causes the linkage rod (6) to rotate upward and clockwise. The linkage rod (6) gives the rear support rod (51) an upward pulling force, causing the front support rod (50) and the rear support rod (51) to bend upward along the third rotation center. The bending of the front support rod (50) pulls the front foot mechanism (3) to bend along the second rotation center, while causing the front support rod (50) and the rear support rod (51) to rotate and fold along the fourth and fifth rotation centers respectively. The front end of the bottom linkage bracket (5) is also hinged to a seat support rod (7), which is hinged to the fourth rotation center. The other end of the seat support rod (7) is hinged to the base bracket (8). The seat support rod (7) supports the base bracket (8) and rotates and folds around the fourth rotation center as the front foot mechanism (3) rotates.

2. The articulating folding vehicle frame of claim 1, wherein, The handle mechanism (2) includes an upper handle rod (22) and a lower handle rod (23) hinged to the handle folding joint assembly (21), and a handrail (24) connected to the upper end of the upper handle rod (22), wherein the internal unlocking mechanism (20) is disposed within the handrail (24).

3. The articulating folding vehicle frame of claim 2, wherein, The handlebar folding joint assembly (21) includes a handlebar folding joint upper cover (211) and a handlebar folding joint lower cover (212). The handlebar folding joint upper cover (211) is disposed on one side of the handlebar folding joint lower cover (212). The handlebar folding joint upper cover (211) includes an upper half cover (2110) and a support part (2111) disposed on the upper half cover (2110). The support part (2111) is used to support the bottom surface after the frame is folded.

4. The articulating folding vehicle frame of claim 2 wherein, The internal unlocking mechanism (20) includes a pressing component (201), a first pull rope (202), and a second pull rope (203). The two ends of the pressing component (201) are respectively connected to a first pull rope (202). The first pull rope (202) extends downward along the handlebar upper rod (22) and engages with the handlebar folding joint assembly (21). The second pull rope (203) is engaged in the handlebar folding joint assembly (21) and is located below the first pull rope (202). The lower end of the second pull rope (203) is connected to the frame folding joint mechanism (1).

5. The articulating folding vehicle frame of claim 1 wherein, The frame folding joint mechanism (1) includes a frame joint cover (10) that connects to the handlebar mechanism (2) and a rear joint cover (11) that connects to the front foot mechanism (3) and the rear foot mechanism (4). The frame joint cover (10) includes a joint cover (101), a cover connector (102) connected to the joint cover (101) and the handlebar mechanism (2), and a connecting post (103) connected to the seat support rod (7). The rear joint cover (11) is provided with a first connector (111) and a second connector (112). The first connector (111) is hinged to the front foot mechanism (3); the second connector (112) is fixed to the rear foot mechanism (4); and the frame joint cover (10) is fixed to the handlebar mechanism (2).

6. The articulating folding vehicle frame of Claim 5, wherein, The frame joint cover (10) and the rear joint cover (11) are connected by a shaft (12). A first rotating shaft (13) is provided at the axis of the frame joint cover (10). A joint unlocking component (14), a joint rotating tooth (15) and a joint elastic component (16) are sleeved on the first rotating shaft (13). A first driving protrusion (104) connected to the joint unlocking component (14) and a first groove structure (105) meshing with the joint rotating tooth (15) are provided on one side of the handlebar joint cover (10). The joint unlocking component (14) is fixed on one side of the joint rotating tooth (15), and the joint elastic component (16) is provided on the joint rotating tooth (15).

7. The articulating folding vehicle frame of claim 2 wherein, The handle retractable joint assembly (21) includes a bending joint upper cover (211) and a bending joint lower cover (212). The bending joint upper cover (211) has a second rotating shaft (2112) at its center. The second rotating shaft (2112) is fitted with a bending unlocking component (210), a bending joint tooth (213), and a joint unlocking rotating component (214). The bending joint upper cover (211) has a second driving protrusion (2113) connected to the joint unlocking rotating component (214) on one side, and a second groove structure (2114) meshing with the bending joint tooth (213). The bending joint lower cover (212) has a limiting block (215) on one side, and an outer cover seat (216) on one side of the limiting block (215).

8. The articulating folding vehicle frame of claim 5 wherein, The base support (8) includes a foot pedal (80) and a seat (81) that are rotatably connected, with the side of the seat (81) hinged to one side of the frame joint cover (10).

9. A baby stroller comprising a foldable frame as described in any one of claims 1-8.

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