Frame structure of foldable baby carriage

Abstract

The invention relates to the technical field of baby carriages, and discloses a frame structure of a foldable baby carriage, which comprises a front leg, a rear leg, a connecting part, a rear connecting rod, a backrest rod, a front connecting rod, a grab rail, a locking structure and the like. In the folding process, the backrest rod, the front connecting rod and the rear connecting rod are close to the rear legs from the rear, and the front legs are close to the rear legs from the front. Therefore, after the locking of the locking structure is released, the grab rail is lifted, so that the rear wheel is separated from the ground, the front wheel is in contact with the ground, and the front wheel and the upper end of the grab rail are in an up-down state, and at the moment, the whole frame structure can be folded and stored by pressing downwards. The whole folding and storing process can be achieved with one hand, a certain part does not need to be folded firstly, a grab rail or a related structure does not need to be disassembled, and the problems that in the prior art, a folding baby carriage is complex in structure, the folding process is not easy and convenient enough, and the operation difficulty is large for a user holding a baby are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of baby carriages, and particularly relates to a frame structure of a foldable baby carriage. Background Art

[0002] A baby carriage (also known as a baby stroller, children's carriage) is a portable means of transportation specifically designed for infants and young children, which is convenient for parents or caregivers to use when taking the baby out. There are many styles of existing baby carriages, including single-person baby carriages and double-person baby carriages, including single-wheel baby carriages and multi-wheel baby carriages, including grip-push baby carriages and flat-push baby carriages, etc. Consumers can choose different styles of baby carriages according to their own preferences and needs.

[0003] In order to facilitate carrying and storage, foldable baby carriages have been designed. The core of the design of foldable baby carriages lies in portability and functionality. The foldable baby carriage has a small volume after folding and can be placed in the trunk of a car and boarded (partially meeting the size requirements of airlines).

[0004] For example, a Chinese invention patent with the publication number CN105691435B discloses a foldable baby carriage, which includes a front link mechanism, a rear link mechanism, a seat part, a seat rod assembly, a backrest part, and a backrest rod assembly. The front link mechanism includes front legs, and the front legs have an upper end and a lower end where a front wheel device is installed. The rear link mechanism includes rear legs, and the rear legs have an upper end and a lower end where a rear wheel device is installed. The seat rod assembly is used to support the seat part. The backrest rod assembly is used to support the backrest part. When the foldable baby carriage is moved from its unfolded state to its folded state: the lower ends of the front legs and the lower ends of the rear legs move towards each other, so that the lower ends of the front legs and the lower ends of the rear legs approach each other until the distance between the lower ends of the front legs and the lower ends of the rear legs reaches the minimum value. At this time, the front wheel device of the front legs and the rear wheel device of the rear legs are brought together to contact each other or nearly contact each other. The foldable baby carriage has a small volume after folding, is convenient to carry, and can better avoid contamination.

[0005] This baby carriage can be folded and stored. The volume after folding is greatly reduced compared to before folding, which is convenient to carry. However, its structure is relatively complex. The folding process requires first folding and storing the backrest part, and then completing the folding of the entire frame. The entire folding and storing process is not simple enough, and it is difficult to operate for users holding a baby.

[0006] Summary of the Invention

[0007] The technical problem to be solved by the present invention is that the existing foldable baby carriage has a relatively complex structure, the folding process is not simple enough, and it is difficult to operate for users holding a baby.

[0008] The object of the present invention can be achieved by the following technical solutions:

[0009] The frame structure of a foldable baby stroller, comprising:

[0010] Front legs;

[0011] Rear legs, with a first transfer position provided between the upper and lower ends of the rear legs;

[0012] A connecting part, which is fixedly arranged at the upper end of the rear leg, and the upper end of the front leg is hinged to the connecting part;

[0013] A rear connecting rod, the lower end of which is hinged to the rear leg at the first transfer position;

[0014] A backrest rod, the lower end of which is hinged to the upper end of the rear connecting rod, and the backrest rod has a second transfer position;

[0015] A front connecting rod, the lower end of which is hinged to the connecting part, and the upper end of the front connecting rod is hinged to the backrest rod at the second transfer position;

[0016] An armrest rod, the lower end of which is hinged to the middle part of the rear connecting rod, there is a third transfer position arranged on the armrest rod, and the armrest rod is hinged to the front connecting rod at the third transfer position;

[0017] A locking structure, which is used to lock and unlock the hinged action between the upper end of the rear connecting rod and the lower end of the backrest rod.

[0018] In one aspect of the present invention: a first support rod is fixedly arranged between the two front legs, and a footrest structure is fixedly arranged on the first support rod.

[0019] In one aspect of the present invention: the lower end of the front leg is provided with a front wheel, and the front wheel is a universal wheel structure.

[0020] In one aspect of the present invention: a second support rod is fixedly arranged between the two rear legs.

[0021] In one aspect of the present invention: the lower end of the rear leg is provided with a rear wheel, and the rear wheel is a universal wheel structure or a directional wheel structure.

[0022] In one aspect of the present invention: a braking structure is arranged on the rear wheel.

[0023] In one aspect of the present invention: the length dimension of the front leg is smaller than the length dimension of the rear leg.

[0024] In one aspect of the present invention: the distance between the two front wheels is smaller than the distance between the two rear wheels.

[0025] In one aspect of the present invention, a seat structure is further provided. One end of the seat structure is hinged to the rear link, and the connection point is located between the lower end of the armrest rod and the lower end of the rear link. The other end of the seat structure is hinged to the connection part through a link.

[0026] In one aspect of the present invention, a shielding frame structure is further provided. The shielding frame structure is hinged to the rear link at the second transfer position.

[0027] According to the frame structure of a foldable baby stroller of the present invention, it has at least one of the following technical effects:

[0028] This application provides a frame structure of a foldable baby stroller, including front legs, rear legs, a connection part, rear links, a backrest rod, front links, armrest rods, and a locking structure, etc. During the process of the frame structure changing from the unfolded state to the folded state, the lower ends of the front legs and the lower ends of the rear legs move towards each other, so that the lower ends of the front legs and the lower ends of the rear legs approach each other. At this time, the front wheel devices of the front legs and the rear wheel devices of the rear legs are brought together to contact each other or be close to contacting each other; the upper ends of the front links and the upper ends of the rear links move towards the lower ends of the rear legs, so that the upper ends of the front links, the upper ends of the rear links and the lower ends of the rear legs approach each other. Finally, the front links, rear links and rear legs are brought together to contact each other or be close to contacting each other; the upper end of the backrest rod moves towards the upper end of the rear leg, so that the upper end of the backrest rod and the upper end of the rear leg approach each other. Finally, the backrest rod and the front link are brought together to contact each other or be close to contacting each other. During the folding process, since the backrest rod, front link, and rear link approach the rear leg from the rear direction, and the front leg approaches the rear leg from the front direction. Therefore, after unlocking the locking structure, by lifting the armrest rod, the rear wheels are lifted off the ground, the front wheels contact the ground, and the front wheels and the upper end of the armrest rod are in an up-and-down state. At this time, pressing down can achieve the folding and storage of the entire frame structure. The entire folding and storage process can be achieved with one hand, and there is no need to fold a certain part first, nor to remove the armrest rod or related structures, solving the problems in the prior art that the structure of the foldable baby stroller is relatively complex, the folding process is not simple enough, and the operation is difficult for users holding a baby.

[0029] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand in the description of the embodiments in conjunction with the following drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0031] Figure 1 is a three-dimensional structural schematic diagram of a perspective view of the unfolded state of the frame structure of a foldable baby stroller according to the present invention;

[0032] Figure 2 is a three-dimensional structural schematic diagram of another perspective view of the unfolded state of the frame structure of a foldable baby stroller according to the present invention;

[0033] Figure 3 is the frame structure of a foldable baby stroller according to the present invention Figure 2 front view structural schematic diagram;

[0034] Figure 4 is the frame structure of a foldable baby stroller according to the present invention Figure 2 side view structural schematic diagram;

[0035] Figure 5 is the frame structure of a foldable baby stroller according to the present invention Figure 4 cross-sectional structural schematic diagram;

[0036] Figure 6 is a three-dimensional structural schematic diagram of the frame structure of a foldable baby stroller during the folding process;

[0037] Figure 7 is the frame structure of a foldable baby stroller according to the present invention Figure 6 front view structural schematic diagram;

[0038] Figure 8 is a three-dimensional structural schematic diagram of the folded state of the frame structure of a foldable baby stroller according to the present invention;

[0039] Figure 9 is the frame structure of a foldable baby stroller according to the present invention Figure 1 partial enlarged structural schematic diagram at position A;

[0040] Figure 10 is a structural schematic diagram of the cooperation between the locking block and the first adapter sleeve of the frame structure of a foldable baby stroller according to the present invention;

[0041] Figure 11 is a cross-sectional structural schematic diagram of the locking structure of the frame structure of a foldable baby stroller according to the present invention;

[0042] Figure 12 is the frame structure of a foldable baby stroller according to the present invention Figure 1 partial enlarged structural schematic diagram at position B;

[0043] Figure 13 is the frame structure of a foldable baby stroller according to the present invention Figure 2 partial enlarged structural schematic diagram at position C;

[0044] Figure 14 This is a schematic structural diagram of the cooperation between the brake lever and the star wheel structure in the frame structure of a foldable baby stroller according to the present invention.

[0045] The reference numerals in the figure are: 1, front leg; 2, rear leg; 3, connecting part; 4, rear connecting rod; 5, backrest rod; 6, front connecting rod; 7, armrest rod; 8, first adapter sleeve; 9, second adapter sleeve; 10, locking block; 11, switch; 12, footrest structure; 13, star wheel structure; 14, lever; 15, seat structure; 16, handle rod; 17, shielding frame structure. Specific embodiments

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Please refer to Figure 1-14 , the present invention is a frame structure of a foldable baby stroller, and the frame structure can change from an unfolded state to a folded state, including a front leg 1, a rear leg 2, a connecting part 3, a rear connecting rod 4, a backrest rod 5, a front connecting rod 6, an armrest rod 7, and a locking structure, etc. Among them, both ends of the front connecting rod 6 and the rear connecting rod 4 are hinged to the armrest rod 7, the front leg 1, the rear leg 2, etc., so that the frame structure can be folded and moved from the unfolded state to the folded state.

[0048] Please refer to Figure 1-14 , in one of the embodiments of the present invention, a first transfer position is provided between the upper end and the lower end of the rear leg 2; the connecting part 3 is fixedly arranged at the upper end of the rear leg 2, and the upper end of the front leg 1 is hinged to the connecting part 3; the lower end of the rear connecting rod 4 is hinged to the rear leg 2 at the first transfer position; the lower end of the backrest rod 5 is hinged to the upper end of the rear connecting rod 4, and a second transfer position is provided on the backrest rod 5; the lower end of the front connecting rod 6 is hinged to the connecting part 3, and the upper end of the front connecting rod 6 is hinged to the backrest rod 5 at the second transfer position; the lower end of the armrest rod 7 is hinged to the middle of the rear connecting rod 4, a third transfer position is provided on the armrest rod 7, and the armrest rod 7 is hinged to the front connecting rod 6 at the third transfer position; the locking structure is used to lock and unlock the hinged action between the upper end of the rear connecting rod 4 and the lower end of the backrest rod 5.

[0049] Please refer to Figure 1-14, in one embodiment of the present invention, in the use state, the hinge action between the upper end of the rear link 4 and the lower end of the backrest rod 5 is locked by a locking structure, so that the frame structure is in the unfolded state. When folding and storing is required, the hinge action between the upper end of the rear link 4 and the lower end of the backrest rod 5 is unlocked by the locking structure; during the process of the frame structure changing from the unfolded state to the folded state, the lower ends of the front legs 1 and the lower ends of the rear legs 2 move towards each other, so that the lower ends of the front legs 1 and the lower ends of the rear legs 2 approach each other. At this time, the front wheel devices of the front legs 1 and the rear wheel devices of the rear legs 2 are brought together to contact each other or be close to contacting each other; the upper ends of the front link 6, the upper ends of the rear link 4 and the lower end of the rear leg 2 move towards each other, so that the upper ends of the front link 6, the upper ends of the rear link 4 and the lower end of the rear leg 2 approach each other. Finally, the front link 6, the rear link 4 and the rear leg 2 are brought together to contact each other or be close to contacting each other; the upper end of the backrest rod 5 and the upper end of the rear leg 2 move towards each other, so that the upper end of the backrest rod 5 and the upper end of the rear leg 2 approach each other. Finally, the backrest rod 5 and the front link 6 are brought together to contact each other or be close to contacting each other.

[0050] Please refer to Figure 1-14 , in one embodiment of the present invention, the lengths of the rear legs, the front link 6, the rear link 4 and the backrest rod 5 are close to each other so as to be in an optimal volume state after folding. Such a length limitation can make the length of the foldable stroller after folding only about one-third of the length in the unfolded state, which can greatly reduce the length of the foldable stroller after folding. The length of the front legs 1 is less than the length of the rear legs 2, and the distance between the two front wheels is less than the distance between the two rear wheels. In this way, after folding, the two front wheels can be located between the two rear legs 2, thereby effectively reducing the volume of the entire frame in the folded state.

[0051] Please refer to Figure 1-11 , in one embodiment of the present invention, the locking structure can be a bolt structure, a screw structure, etc., or other related structures. The bolt can be arranged inside the hollow armrest rod 7 and connected to a switch 11 arranged at the top of the armrest rod 7 through a traction rope. When needed, the switch 11 can be pressed, and the bolt is pulled out through the traction rope to release the locking of the hinge action between the upper end of the rear link 4 and the lower end of the backrest rod 5. At the same time, an elastic member can be arranged on the bolt for the reset of the bolt. As another example, a linear motor can also be used to drive the bolt to move and insert / remove at the rotating shaft at the hinge position between the upper end of the rear link 4 and the lower end of the backrest rod 5, thereby controlling the locking and unlocking of the hinge action between the upper end of the rear link 4 and the lower end of the backrest rod 5. The switch 11 arranged at the top of the armrest rod 7 can be used to control the start and stop of the linear motor.

[0052] Please refer to Figure 1-11, in one embodiment of the present invention, the locking structure includes a first adapter sleeve 8, a second adapter sleeve 9, and a locking block 10. The first adapter sleeve 8 is fixedly arranged at the upper end of the rear link 4, and a locking cavity matching the locking block 10 is formed therein. The depth dimension of the locking cavity is greater than the thickness dimension of the locking block 10, and a return spring is arranged between the first adapter sleeve 8 and the locking block 10. An electromagnet is further arranged on the first adapter sleeve 8, and a switch 11 of the electromagnet is arranged at the top end of the armrest rod 7. The second adapter sleeve 9 is fixedly arranged at the lower end of the armrest rod 7, and a locking cavity matching the locking block 10 is formed in the second adapter sleeve 9. In a normal state, under the elastic force of the return spring, half of the locking block 10 is in the locking cavity of the second adapter sleeve 9 and half is in the locking cavity of the first adapter sleeve 8, realizing the locking of the rotational freedom degrees of the two adapter sleeves. When needed, the electromagnet is activated through the switch 11 to make it magnetic, and then the locking block 10 is adsorbed to overcome the elastic force of the return spring and thus disengaged from the second adapter sleeve 9( Figure 11 in which the locking block 10 moves to the left), at this time, the locking of the rotational freedom degrees between the first adapter sleeve 8 and the second adapter sleeve 9 is unlocked, and the two can rotate relative to each other.

[0053] Please refer to Figure 1-12 , in one embodiment of the present invention, a first support rod can be fixedly arranged between the two front legs 1 to strengthen the strength of the positions of the two front legs 1. A footrest structure 12 is fixedly arranged on the first support rod for supporting the feet of the baby in the use state. The lower ends of the front legs 1 are provided with front wheels, and the front wheels can be of a universal wheel structure or a directional wheel structure. As an example, the front wheels are of a universal wheel structure. Specifically, a wheel seat is arranged at the lower end of the front leg 1, and the front wheel includes a wheel head, and the wheel head is rotationally and coaxially matched with the wheel seat. Further, a dial block can be arranged on the wheel seat, and the dial block can move linearly along the direction close to / away from the wheel head. Further, a lock hole is arranged on the wheel head, and the dial block can be inserted into the lock hole to lock the steering of the front wheel.

[0054] Please refer to Figure 1-14 , in one embodiment of the present invention, a second support rod is fixedly arranged between the two rear legs 2 to ensure the strength of the positions of the rear legs 2. The lower ends of the rear legs 2 are provided with rear wheels, and the rear wheels can be of a universal wheel structure or a directional wheel structure. As an example, in this embodiment, the rear wheels are of a directional wheel structure. Further. A braking structure can be arranged on the rear wheels. The braking structure is used to lock the rotational freedom degree of the rear wheels. It can be selected from a pin, a screw, a brake pad or other existing braking structures. As an example, such as Figure 13 , Figure 14The rear wheel is provided with a star wheel structure 13, the lower end of the rear leg 2 is rotatably provided with a lever 14, and a brake lever is fixedly provided on the lever 14. When the rear wheel rotates and moves, the brake lever is located outside the rotation track of the star wheel structure 13, and does not affect the rotation freedom of the rear wheel. When needed, the brake lever is driven to move by moving the lever 14, so that the brake lever is in the star wheel structure 13 to jam the star wheel structure 13, thereby achieving a braking effect.

[0055] See also Figure 1-5 In one embodiment of the present invention, a seat structure 15 is further provided, one end of the seat structure 15 is hinged to the rear connecting rod 4, and the connection point is located between the lower end of the handrail 7 and the lower end of the rear connecting rod 4, and the other end of the seat structure 15 is hinged to the connecting portion 3 through a connecting rod. The seat structure 15 is used to cooperate with a cushion and other structures for the baby to lie or sit. Furthermore, a handle bar 16 can be provided under the seat structure 15, and the handle bar 16 is movably connected to the seat structure 15. In this way, the handle bar 16 can serve as a support for the cushion on the one hand, and on the other hand, after the frame is folded, the handle bar 16 can be used as a gripping portion.

[0056] See also Figure 1-5 In one embodiment of the present invention, a shielding frame structure 17 is further provided, and the shielding frame structure 17 is hinged to the rear connecting rod 4 at the second transfer position. When in use, a curtain or a shielding layer can be provided on the shielding frame structure 17, and the position of the shielding layer can be adjusted by the shielding frame structure 17.

[0057] Working principle of the present invention:

[0058] The present application provides a frame structure of a foldable baby stroller, including a front leg 1, a rear leg 2, a connecting part 3, a rear link 4, a backrest rod 5, a front link 6, an armrest rod 7, and a locking structure, etc. During the process of the frame structure changing from the unfolded state to the folded state, the lower ends of the front leg 1 and the rear leg 2 move towards each other, so that the lower ends of the front leg 1 and the rear leg 2 approach each other. At this time, the front wheel device of the front leg 1 and the rear wheel device of the rear leg 2 are brought together to contact each other or be close to contacting each other; the upper ends of the front link 6 and the rear link 4 and the lower end of the rear leg 2 move towards each other, so that the upper ends of the front link 6 and the rear link 4 and the lower end of the rear leg 2 approach each other. Finally, the front link 6, the rear link 4 and the rear leg 2 are brought together to contact each other or be close to contacting each other; the upper end of the backrest rod 5 and the upper end of the rear leg 2 move towards each other, so that the upper end of the backrest rod 5 and the upper end of the rear leg 2 approach each other. Finally, the backrest rod 5 and the front link 6 are brought together to contact each other or be close to contacting each other. During the folding process, since the backrest rod 5, the front link 6, and the rear link 4 approach the rear leg 2 from the rear, and the front leg 1 approaches the rear leg 2 from the front. Therefore, after unlocking the locking structure, by lifting the armrest rod 7, the rear wheel is lifted off the ground, and the front wheel contacts the ground. The front wheel and the upper end of the armrest rod 7 are in an up-and-down state. At this time, pressing down can achieve the folding and storage of the entire frame structure. The entire folding and storage process can be achieved with one hand, and there is no need to fold a certain part first, nor to remove the armrest rod 7 or related structures, solving the problems in the prior art that the structure of the foldable baby stroller is relatively complex, the folding process is not simple enough, and the operation is difficult for users holding a baby.

[0059] The above has described a specific embodiment of the present invention in detail, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the claims of the present invention.

[0060] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0061] In the description of the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include contact between the first and second features not directly but through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0062] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. The frame structure of a foldable baby carriage, characterized in that, Comprising: Front legs; Rear legs, with a first transfer position provided between the upper and lower ends of the rear legs; A connecting part, which is fixedly arranged at the upper end of the rear leg, and the upper end of the front leg is hinged to the connecting part; A rear connecting rod, the lower end of which is hinged to the rear leg at the first transfer position; A backrest rod, the lower end of which is hinged to the upper end of the rear connecting rod, and the backrest rod has a second transfer position; A front connecting rod, the lower end of which is hinged to the connecting part, and the upper end of the front connecting rod is hinged to the backrest rod at the second transfer position; An armrest rod, the lower end of which is hinged to the middle of the rear connecting rod, a third transfer position is arranged on the armrest rod, and the armrest rod is hinged to the front connecting rod at the third transfer position; A locking structure, which is used to lock and unlock the hinged action between the upper end of the rear connecting rod and the lower end of the backrest rod.

2. The frame structure of a foldable baby stroller according to claim 1, characterized in that, A first support rod is fixedly arranged between the two front legs, and a footrest structure is fixedly arranged on the first support rod.

3. The frame structure of a foldable baby stroller according to claim 2, characterized in that, The lower end of the front leg is provided with a front wheel, and the front wheel is a universal wheel structure.

4. The frame structure of a foldable baby stroller according to claim 3, characterized in that, A second support rod is fixedly arranged between the two rear legs.

5. The frame structure of a foldable baby stroller according to claim 4, characterized in that, The lower end of the rear leg is provided with a rear wheel, and the rear wheel is a universal wheel structure or a directional wheel structure.

6. The frame structure of a foldable baby stroller according to claim 5, characterized in that A braking structure is arranged on the rear wheel.

7. The frame structure of a foldable baby stroller according to claim 6, characterized in that, The length dimension of the front leg is smaller than that of the rear leg.

8. The frame structure of a foldable baby stroller according to claim 7, characterized in that, The distance between the two front wheels is smaller than the distance between the two rear wheels.

9. The frame structure of a foldable baby stroller according to claim 1, wherein A seat structure is also provided, one end of which is hinged to the rear connecting rod, and the connection point is located at a position between the lower end of the armrest rod and the lower end of the rear connecting rod, and the other end of the seat structure is hinged to the connecting part through a connecting rod.

10. The frame structure of a foldable baby stroller according to claim 1, characterized in that, A shielding frame structure is also provided, and the shielding frame structure is hinged to the rear connecting rod at the second transfer position.

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