A folding stroller with convenient storage

Abstract

This invention belongs to the technical field of children's products, and particularly relates to a foldable stroller that is easy to store. The frame assembly has a first unfolded state and a first folded state. The frame assembly includes a backrest support, a rear leg support, and a front leg support. The backrest support and the rear leg support rotate relative to the front leg support, and the backrest support has a backrest unfolded position and a backrest folded position, while the rear leg support has a rear leg unfolded position and a rear leg folded position. A support assembly is connected between the rear leg support and the front leg support, and the support assembly has a second unfolded state and a second folded state. The front leg support and the rear leg support are respectively provided with a first wheel and a second wheel. When the frame assembly switches from the first unfolded state to the first folded state, the support assembly also switches from the second unfolded state to the second folded state, and the support assembly and the first wheel enable the frame in the first folded state to be placed in an upright position, so that the stroller body can be placed upright and stored after folding.

Description

Technical Field

[0001] This invention relates to the technical field of children's products, and more particularly to a foldable stroller that is easy to store. Background Technology

[0002] Strollers are a baby's "transportation tool," requiring someone to push or pull them along. In the market, strollers can be broadly categorized by function into luxury models suitable for general home use and extended outings, lightweight models suitable for frequent outings, and tricycles designed for caregivers' outdoor activities.

[0003] Existing children's vehicles generally consist of a chassis and a frame. The frame can be folded relative to the chassis, but after the frame is folded, it can generally only be stored by laying the chassis flat. However, flat storage takes up a lot of space and is not convenient for daily storage. If the frame is placed upright, since the wheels are on the ground and are easy to slide, the frame needs to be supported by other items to be placed stably.

[0004] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0005] This invention addresses the problems mentioned above regarding the large volume of existing stroller frames when folded flat and unstable when placed upright, and proposes a foldable stroller that is easy to store.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A foldable stroller that is easy to store includes a stroller body. The stroller body includes a frame assembly, a support assembly, and a folding structure connected to the frame assembly. The frame assembly has a first unfolded state and a first folded state through the folding structure. The frame assembly includes a backrest support, a rear leg support, and a front leg support. The backrest support and the rear leg support rotate relative to the front leg support through the folding structure. The backrest support has a backrest unfolded position and a backrest folded position corresponding to the first unfolded state and the first folded state, respectively. The rear leg support has a rear leg unfolded position and a rear leg folded position corresponding to the first unfolded state and the first folded state, respectively.

[0008] The support assembly is connected between the rear leg support and the front leg support, and the support assembly has a second unfolded state and a second retracted state respectively corresponding to the first unfolded state and the first retracted state.

[0009] The front support and the rear support are respectively equipped with a first wheel and a second wheel;

[0010] When the frame assembly switches from the first deployed state to the first retracted state, the support assembly also switches from the second deployed state to the second retracted state, and the frame in the first retracted state is given an upright posture through the support assembly and the first wheel.

[0011] As described above, a foldable stroller that is easy to store includes a support assembly comprising a support rod and a support block. The rear leg support has a first connecting part, and the front leg support has a second connecting part. One end of the support rod and the support block are rotatably connected, and the other end of the support rod is rotatably connected to the first connecting part. The other end of the support block is rotatably connected to the second connecting part. When the rear leg support is switched from the rear leg extended position to the rear leg folded position, the support rod and the support block are subjected to force and rotate and fold relative to each other to switch from the second extended state to the second folded state. The support rod and the support block have a first force point that allows the frame assembly to be placed vertically, and the first wheel has a second force point that allows the frame assembly to be placed vertically.

[0012] As described above, in a foldable stroller that is easy to store, the diameter of the first wheel is smaller than the diameter of the second wheel. When the frame assembly is in the first folded state and the support assembly is in the second folded state, the bottom of the first wheel is lower than the bottom of the second wheel, and the first and second points of force are approximately on the same horizontal plane.

[0013] As described above, in a foldable stroller that is easy to store, a first angle is formed between the support rod and the support block, a second angle is formed between the first connecting part and the support rod, and a third angle is formed between the second connecting part and the support block.

[0014] As described above, in a foldable stroller that is easy to store, when the support assembly is in the second unfolded state, the first included angle, the second included angle, and the third included angle are all obtuse angles.

[0015] As described above, in a foldable stroller that is easy to store, when the support component is in the second folded state, the first angle, the second angle, and the third angle are all acute angles.

[0016] As described above, a foldable stroller that is easy to store includes a folding structure comprising a first drive assembly disposed in the backrest support, a first folding joint disposed between the front leg support and the backrest support, a second folding joint disposed between the front leg support and the rear leg support, and a first driven member disposed between the first folding joint and the second folding joint, wherein the rear leg support is located below the backrest support.

[0017] The first drive component is used to unlock the first folding joint. The backrest can rotate toward the front foot support through the first folding joint, so that the backrest can rotate from the backrest unfolded position to the backrest folded position. The second folding joint is further unlocked through the first follower. The rear foot support can rotate relative to the front foot support through the second folding joint, so that the rear foot support can rotate from the rear foot unfolded position to the rear foot folded position.

[0018] As described above, a foldable stroller that is easy to store includes a locking device connected to the backrest frame. The locking device has a first mounting portion for connecting the child carrier and a second mounting portion for connecting the backrest frame on both sides. The locking device includes a locking assembly, a second drive assembly connected to the locking assembly, and a linkage reset assembly. The locking assembly is used to lock and fix the child carrier. The second drive assembly is used to switch the locking assembly from a locked state to an unlocked state relative to the child carrier. The linkage reset assembly can reset the locking assembly from an unlocked state to a locked state. When the locking assembly is in the unlocked state, the linkage reset assembly is used to keep the locking assembly in the unlocked state and prevent the locking assembly from switching to the locked state.

[0019] As described above, a conveniently foldable stroller includes a brake structure in the rear frame. The second wheel has an axle and a brake hole located on its side and surrounding the axle. The brake structure includes a wheel seat connected to the axle, a base on one side of the wheel seat, an operating component rotatably connected to one side of the base, and a transmission assembly within the base. The wheel seat is connected to the axle, and a brake pin corresponding to the brake hole is slidably installed within the wheel seat. The brake pin has a braking state when inserted into the brake hole and a braking state when disengaged from the brake hole. The transmission assembly includes a rotatably mounted movable block, a first transmission component slidably mounted between the movable block and the base, and a connecting... A second driven member is connected between the first transmission member and the brake pin. The first transmission member has a first position and a second position in the movable block, respectively corresponding to the braking state and the released braking state. The movable block is rotated relative to the first transmission member by the operating member, thereby switching the first transmission member between the first position and the second position. The second driven member drives the brake pin to slide relative to the brake hole, thereby switching the brake pin between the braking state and the released braking state. The operating member is connected to a first elastic member. When the operating member is reset by the first elastic member, the movable block maintains its current posture, so that the first transmission member remains in the first position or the second position.

[0020] As described above, a foldable stroller that is easy to store includes a light-emitting component and a power supply device disposed in the frame assembly, wherein the light-emitting component is used to make the frame assembly emit light.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. By setting a support component with a second unfolded state and a second folded state, as the frame assembly changes from the first unfolded state to the second unfolded state, the support component enables the frame assembly in the first folded state to have an upright posture, so that the main body of the stroller can be placed upright and stored after folding, thereby reducing the folded volume of the stroller main body and saving storage space.

[0023] 2. The support component in the second folded state, together with the first wheel, forms a fixed device for the frame component in the first folded state to be placed vertically. The structure is stable and not easy to tip over. No additional items are needed to stabilize the stroller body, which further facilitates the user to store and place the stroller body.

[0024] 3. The support component can be linked with the unfolding or folding of the rear foot bracket to realize the unfolding or folding of the support component. No additional operating power source is required, which is convenient for users and optimizes the user experience.

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the chassis assembly of the present invention in its first deployed state. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the chassis assembly of the present invention in its first deployed state. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the frame assembly of the present invention in its first retracted state. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the frame assembly of the present invention in its first retracted state. Figure 2 ;

[0030] Figure 5 This is a front view of the frame assembly of the present invention in its first unfolded state;

[0031] Figure 6 This is a schematic diagram of the chassis assembly of the present invention in its first deployed state. Figure 3 (Including child vehicles);

[0032] Figure 7 This is a schematic diagram of the frame assembly of the present invention in its first retracted state. Figure 3 (Including child vehicles);

[0033] Figure 8 Explosion of the first driving component of the present invention Figure 1 ;

[0034] Figure 9 Explosion of the first driving component of the present invention Figure 2 ;

[0035] Figure 10 Explosion of the first folding joint of the present invention Figure 1 ;

[0036] Figure 11 Explosion of the first folding joint of the present invention Figure 2 ;

[0037] Figure 12 The three-dimensional locking device of the present invention Figure 1 ;

[0038] Figure 13 The three-dimensional locking device of the present invention Figure 2 ;

[0039] Figure 14 The three-dimensional locking device of the present invention Figure 3 ;

[0040] Figure 15 Explosion of the locking device of the present invention Figure 1 ;

[0041] Figure 16 Explosion of the locking device of the present invention Figure 2 ;

[0042] Figure 17 This is a top view of the locking device of the present invention;

[0043] Figure 18 for Figure 17 D-D section in Figure 1 ;

[0044] Figure 19 for Figure 17 D-D section in Figure 2 ;

[0045] Figure 20 This is a perspective view of the brake structure of the present invention;

[0046] Figure 21 This is a top view of the brake structure of the present invention;

[0047] Figure 22 This is an exploded view of the wheel seat, brake pin, and second wheel of the present invention;

[0048] Figure 23 for Figure 21 Enlarged view of the E-E section view in the figure;

[0049] Figure 24 This is an exploded view of the brake structure of the present invention (hidden wheel seat, brake pin, and second wheel);

[0050] Figure 25 This is a top view of the base and operating components of the present invention;

[0051] Figure 26 for Figure 25 F-F section view in the middle;

[0052] Figure 27 for Figure 25 G-G sectional view in the middle;

[0053] Figure 28 for Figure 25 Sectional view I-I in the middle;

[0054] Figure 29 The three-dimensional representation of the movable block in the brake structure of the present invention Figure 1 ;

[0055] Figure 30 The three-dimensional representation of the movable block in the brake structure of the present invention Figure 2 . Detailed Implementation

[0056] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0057] like Figure 1As shown in Figure 30, the present invention provides a conveniently foldable stroller, comprising a stroller body 1. The stroller body 1 includes a frame assembly 2, a support assembly 3, and a folding structure connected to the frame assembly 2. The frame assembly 2 has a first unfolded state and a first folded state via the folding structure. The frame assembly 2 includes a backrest support 21, a rear leg support 22, and a front leg support 23. The backrest support 21 and the rear leg support 22 rotate relative to the front leg support 23 via the folding structure. The backrest support 21 has a backrest unfolded position and a backrest folded position corresponding to the first unfolded state and the first folded state, respectively. The rear leg support 22 has a backrest unfolded position and a backrest folded position corresponding to the first unfolded state and the first folded state, respectively. The first unfolded state and the first retracted state have the following rear leg unfolded and retracted positions: the support component 3 is connected between the rear leg support 22 and the front leg support 23, and the support component 3 has a second unfolded state and a second retracted state corresponding to the first unfolded state and the first retracted state, respectively; the front leg support 23 and the rear leg support 22 are respectively provided with a first wheel 231 and a second wheel 221; when the frame assembly 2 switches from the first unfolded state to the first retracted state, the support component 3 also switches from the second unfolded state to the second retracted state, and the frame in the first retracted state is given an upright posture through the support component 3 and the first wheel 231.

[0058] like Figure 1 As shown in Figure 4, Figure 1 and Figure 2 This indicates that the frame assembly 2 is in a first deployed state and the support assembly 3 is in a second deployed state. Figure 3 and Figure 4This indicates that the frame assembly 2 is in a first folded state and the support assembly 3 is in a second folded state. In this embodiment, by providing a support assembly 3 with a second unfolded state and a second folded state, as the frame assembly 2 transitions from the first unfolded state to the second unfolded state, the support assembly 3 enables the frame assembly 2 in the first folded state to have an upright posture, so that the stroller body 1 can be placed upright and stored after folding, thereby reducing the folded volume of the stroller body 1 and saving storage space. Furthermore, the support assembly 3 in the second folded state, combined with the first wheel 231, forms a fixing device for the frame assembly 2 in the first folded state to be placed upright. The structure is stable and not easy to tip over, and no additional items are needed to stabilize the stroller body 1, further facilitating the user's storage and placement of the stroller body 1. Specifically, in practical applications, the backrest support 21 rotates towards the front foot support 23 through the folding structure, so that the backrest support 21 transitions from the back unfolded position. When the rear footrest 22 is in the folded position, it rotates towards the front footrest 23 via the folding structure, causing the rear footrest 22 to change from the extended rear foot position to the folded rear foot position. During the folding process of the rear footrest 22, the support component 3 is linked by the force exerted by the rear footrest 22 to change from the second extended state to the second folded state. The support component 3 does not require an additional folding power source, making operation simple and production costs low. When the rear footrest 22 is subjected to external force to change from the folded rear foot position to the extended rear foot position, the rear footrest 22 drives the support component 3 to generate a reset linkage, causing the support component 3 to change to the second extended state. At this time, the frame assembly 2 is in the first extended state, which can be used normally by children. Through the above settings, the support component 3 can move in tandem with the extension or folding of the rear footrest 22 to realize the extension or folding of the support component 3 without the need for an additional operating power source, making it convenient for users and thus optimizing the user experience.

[0059] Specifically, the support assembly 3 includes a support rod 31 and a support block 32. The rear foot bracket 22 is provided with a first connecting part 222, and the front foot bracket 23 is provided with a second connecting part 232. One end of the support rod 31 and the support block 32 are rotatably connected, and the other end of the support rod 31 is rotatably connected to the first connecting part 222. The other end of the support block 32 is rotatably connected to the second connecting part 232. When the rear foot bracket 22 changes from the rear foot extended position to the rear foot retracted position, the support rod 31 and the support block 32 are subjected to force and rotate and fold relative to each other to change from the second extended state to the second retracted state. There is a first force point 321 between the support rod 31 and the support block 32 that makes the frame assembly 2 stand upright. The first wheel 231 has a second force point 2311 that makes the frame assembly 2 stand upright.

[0060] like Figure 3 As shown in Figure 4, the dashed line L1 represents the horizontal plane. In this embodiment, the support rod 31 and the support block 32 are sequentially connected between the first connecting part 222 and the second connecting part 232. One end of the support rod 31 is hinged to the first connecting part 222, and the other end is hinged to one end of the support block 32. The other end of the support block 32 is hinged to the second connecting part 232. Hinges are provided between the first connecting part 222, the support rod 31, the support block 32, and the second connecting part 232. The structure is simple and easy to manufacture. When the rear foot bracket 22 rotates towards the front foot bracket 23 through the folding structure, it simultaneously drives the support rod 31 to rotate between the first connecting part 222 and the support block 32, and through the support rod 31, it drives the support block 32 to rotate between the support rod 31 and the first connecting part 222. The two connecting parts 232 rotate to allow the support rod 31 and support block 32 to fold and unfold, ensuring that the rear foot bracket 22 can perform folding and unfolding actions normally. When the support rod 31 and support block 32 are in the second folded state, the hinge between the support rod 31 and support block 32 faces downward to form the first force point 321. At this time, the first wheel 231 contacts the ground plane to form the second force point 2311. Through the first force point 321 and the second force point 2311, the frame assembly 2 in the first folded state can be stably placed vertically on the horizontal surface without relying on other items. Compared with the flat placement method, it saves more space when storing and optimizes the user experience. The overall structure of the support assembly 3 is simple and easy to manufacture.

[0061] Preferred, such as Figure 2 As shown in Figure 5, the diameter of the first wheel 231 is smaller than the diameter of the second wheel 221. When the frame assembly 2 is in the first retracted state and the support assembly 3 is in the second retracted state, the bottom of the first wheel 231 is lower than the bottom of the second wheel 221, and the first force point 321 and the second force point 2311 are approximately on the same horizontal plane. In this embodiment, as... Figure 2 As shown, the diameter B1 of the first wheel 231 is smaller than the diameter B2 of the second wheel 221, and as... Figure 5As shown, the inner width C1 of the rear leg frame is greater than the outer width C2 of the backrest bracket 21 and the outer width C3 of the front leg bracket 23. With the above arrangement, the rear leg frame can rotate and retract relative to the front leg bracket 23 to the maximum extent. When the rear leg frame is in the retracted position, the bottom of the second wheel 221 is higher than the bottom of the first wheel 231, so that the first wheel 231 can contact the horizontal surface to form the second force point 2311. By setting the first force point 321 and the second force point 2311 to be approximately on the same horizontal plane, the frame assembly 2 is approximately perpendicular to the horizontal plane when it is placed vertically, making it less likely to tip over, and further improving the stability of the frame assembly 2 when it is placed vertically.

[0062] Preferably, a first included angle A1 is formed between the support rod 31 and the support block 32, a second included angle A2 is formed between the first connecting portion 222 and the support rod 31, and a third included angle A3 is formed between the second connecting portion 232 and the support block 32. More preferably, when the support assembly 3 is in the second unfolded state, the first included angle A1, the second included angle A2, and the third included angle A3 are all obtuse angles; when the support assembly 3 is in the second retracted state, the first included angle A1, the second included angle A2, and the third included angle A3 are all acute angles. Figure 2 As shown in Figure 4, in this embodiment, when the support component 3 is in the second unfolded state, the support rod 31 and the support block 32 are unfolded relative to each other. At this time, the first included angle A1, the second included angle A2, and the third included angle A3 are obtuse angles with different specific angles. When the support component 3 is in the second retracted state, the support rod 31 and the support block 32 are folded relative to each other. At this time, the first included angle A1, the second included angle A2, and the third included angle A3 are acute angles with different specific angles. Through the above settings, in the mechanical design process, it is convenient for engineers to reasonably design the support component 3 and the frame component 2, which is beneficial to the overall design of the children's vehicle body 1, thereby facilitating production implementation.

[0063] Specifically, the folding structure includes a first drive assembly 41 disposed in the backrest support 21, a first folding joint 42 disposed between the front foot support 23 and the backrest support 21, a second folding joint 43 disposed between the front foot support 23 and the rear foot support 22, and a first follower 44 disposed between the first folding joint 42 and the second folding joint 43. The rear foot support 22 is located below the backrest support 21. The first drive assembly 41 is used to unlock the first folding joint 42. The backrest support 21 can rotate toward the front foot support 23 through the first folding joint 42, so that the backrest support 21 rotates from the backrest extended position to the backrest folded position. The second folding joint 43 is further unlocked through the first follower 44. The rear foot support 22 can rotate relative to the front foot support 23 through the second folding joint 43, so that the rear foot support 22 rotates from the rear foot extended position to the rear foot folded position.

[0064] like Figure 1 As shown in Figure 7, in this embodiment, the stroller body 1 can be equipped with child carriers 7 such as child seats and child cradles for children to use. The frame assembly 2 is generally divided into a backrest support 21, a rear leg support 22, and a front leg support 23. The front leg support 23 is connected to the backrest support 21 and the rear leg support 22 respectively, and after assembly, the backrest support 21 is located above the rear leg support 22. Figure 1 As shown in Figure 4, Figure 1 and Figure 2 The backrest support 21 is in the backrest extended position and the rear leg support 22 is in the rear leg extended position. Figure 3 and Figure 4The backrest support 21 is in the folded position and the rear leg support 22 is in the folded position. When the backrest support 21 is in the unfolded position and the rear leg support 22 is in the unfolded position, both the first folding joint 42 and the second folding joint 43 are locked, restricting the rotation of the backrest support 21 and the rear leg support 22 relative to the front leg support 23. This ensures the stability of the stroller body 1 during use and prevents the backrest support 21 and the rear leg support 22 from being accidentally folded due to misoperation, thus ensuring the safety of children. When the user needs to fold and store the stroller body 1, the user can manually drive the first drive component 41 to unlock the first folding joint 42. Through manual drive, the backrest support 21 rotates downward relative to the front leg support 23 via the first folding joint 42, thereby causing the backrest support 21 to move from the unfolded position. When the backrest support 21 is rotated to the folded position, it is close to the front leg support 23 and located above it. During the folding process of the backrest support 21, the first driven member 44 is driven by the first folding joint 42 to move among the backrest support 21, the front leg support 23, and the rear leg support 22, so that the second folding joint 43 is unlocked. The user can manually drive the rear leg support 22 to rotate upward relative to the front leg support 23 through the second folding joint 43, so that the rear leg support 22 rotates from the rear leg extended position to the rear leg folded position. When the rear leg support 22 is in the folded position, it is close to the front leg support 23 and located below it, so that the entire stroller body 1 is completely folded and folded. Figure 2 In the diagram, H1 represents the rotation direction when the back support 21 is folded and closed, and H2 represents the rotation direction when the rear support 22 is folded and closed. The back support 21 can be folded and closed relative to the front support 23, and the rear support 22 can also be folded and closed relative to the front support 23. Figure 5As shown, by setting the inner width C1 of the rear leg support 22 to be greater than the outer width C2 of the backrest support 21 and the outer width C3 of the front leg support 23, the stroller body 1 can be folded and folded as much as possible, thereby reducing the overall folded volume of the stroller body 1 and further saving storage space for the user. This makes it easier for the user to store the folded stroller body 1 in the car, allowing the user to easily carry the stroller body 1 out for use, thus optimizing the user experience. Moreover, by unlocking the first folding joint 42 through the first drive component 41, the first folding joint 42 drives the first driven member 44 to further unlock the second folding joint 43, allowing the backrest support 21 and the rear leg support 22 to rotate and fold towards the front leg support 23 respectively. The operation is simple and convenient for the user. In addition, preferably, the first driven member 44 is a pull rope, and the pull rope is preferably a steel rope. Steel rope is a common transmission structure in the stroller body 1, which is safe, reliable, and durable.

[0065] like Figure 8 As shown in Figure 9, in some embodiments, the first drive assembly 41 includes a handle 411 and a locking strip 412. The handle 411 is slidably mounted on the back support 21, and the locking strip 412 is connected between the handle 411 and the first folding joint 42. The handle 411 drives the locking strip 412 to move along the back support 21 so that the locking strip 412 unlocks the first folding joint 42. In this embodiment, the back support 21 includes a handle 211 and connecting rods 212 connected to both sides of the handle 211. The handle 411 is slidably sleeved in the connecting rod 212. The locking strip 412 is slidably installed along the length direction of the connecting rod 212. The connecting rod 212 has a groove adapted to the locking strip 412. The upper and lower sides of the handle 411 can be provided with first limiting parts 213. The handle 411 can slide up and down relative to the connecting rod 212 under external force, and drive the locking strip 412 to slide up and down in the connecting rod 212. Thus, the first folding joint 42 is unlocked and driven by the locking strip 412. With the above-mentioned first driving component 41, the overall structure of the first driving component 41 is simple, easy to manufacture and implement, and has a low production cost.

[0066] like Figure 8As shown in Figure 11, in some embodiments, the first folding joint 42 includes a first connecting bracket 421 connected to the backrest bracket 21, a second connecting bracket 422 connected to the front foot bracket 23, and a first transmission component 42364 disposed between the first connecting bracket 421 and the second connecting bracket 422. The first connecting bracket 421 and the second connecting bracket 422 are rotatably connected. The first transmission component 42364 is connected to the first driving component 41 and the first driven member 44 respectively. The first driving component 41 unlocks the first transmission component 42364. The first connecting bracket 421 can rotate relative to the second connecting bracket 422 under external force, so as to drive the backrest bracket 21 to rotate and retract toward the front foot bracket 23. At the same time, the first transmission component 42364 drives the first driven member 44 to move, thereby further unlocking the second folding joint 43 through the first driven member 44. Furthermore, the first transmission assembly 42364 includes a fixed slider 4231 slidably mounted in the first connecting bracket 421 and a rotating slider 4232 rotatably mounted in the second connecting bracket 422. One end of the fixed slider 4231 has a boss 4233, and the other end is connected to the rotating slider 4232. The first driven member 44 is connected to the rotating slider 4232. The second connecting bracket 422 has a first slot 4221 and a first rotating groove 4222 adapted to the boss 4233, and a second rotating groove 4223 located on one side of the first rotating groove 4222 and adapted to the rotating slider 4232. The rotating groove 4222 communicates with the first slot 4221. The fixed slider 4231 moves within the first connecting bracket 421 via the first driving component 41, thereby driving the boss 4233 to move relative to the first slot 4221, so that the boss 4233 can be inserted into or disengaged from the first slot 4221. When the boss 4233 disengages from the first slot 4221, it enters the first rotating groove 4222 and rotates along the first rotating groove 4222 via the first driving component 41. The fixed slider 4231 drives the rotating slider 4232 to rotate within the second rotating groove 4223, thereby driving the first driven member 44 to move. Furthermore, the fixed slider 4231 is provided with a relief groove 42311 that is adapted to the first rotating part 632. The relief groove 42311 extends toward the boss 4233. When the fixed slider 4231 moves within the first connecting bracket 421 via the first driving assembly 41, it drives the relief groove 42311 to slide or rotate relative to the first rotating part 632.

[0067] In this embodiment, the first connecting bracket 421 and the second connecting bracket 422 are detachably connected to the backrest bracket 21 and the front leg bracket 23, respectively. After assembly, the first connecting bracket 421 and the second connecting bracket 422 have an inner cavity to accommodate the fixed slider 4231 and the rotating slider 4232. When the backrest bracket 21 is in the backrest unfolded position, the boss 4233 is inserted into the first slot 4221, fixing the fixed slider 4231 and restricting the backrest bracket 21 from rotating and retracting towards the front leg bracket 23 via the first driving assembly 41, thereby ensuring the unfolding of the backrest bracket 21. This ensures child safety during use. When the first driving assembly 41 drives the fixed slider 4231 to move upward in the inner cavity, the fixed slider 4231 drives the boss 4233 to move upward in the first slot 4221, and simultaneously drives the relief groove 42311 to move upward relative to the first rotating part 632, so that the boss 4233 disengages from the first slot 4221 and enters the first rotating groove 4222. At this time, the first driving assembly 41 continues to drive the fixed slider 4231 to move upward, so that the boss 4233 rotates along the first rotating groove 4222 toward the rotating slider 4232. Simultaneously, the recess 42311 rotates relative to the first rotating part 632 toward the rotating slider 4232, so that the fixed slider 4231 can drive the rotating slider 4232 to rotate within the second rotating groove 4223, and through the rotational sliding, the first driven member 44 moves upward relative to the rear foot bracket 22, so that the second folding joint 43 can be unlocked and driven through the first driven member 44; when the boss 4233 disengages from the first slot 4221 and enters the first rotating groove 4222, the back support 21, under external force, can move relative to the front foot bracket through the first rotating part 632. The frame 23 rotates and retracts; when the back support 21 is in the retracted position, the back support 21 can be rotated away from the front leg support 23 to the unfolded position by external force. During this rotation, the first connecting bracket 421 rotates relative to the second connecting bracket 422, and the relief groove 42311 rotates relative to the first rotating part 632 in the same direction, so as to drive the fixed slider 4231 to rotate in the same direction in the first rotating groove 4222 until it is aligned with the first slot 4221, and the protrusion 4233 is inserted into the first slot 4221 to fix the back support 21.With the above configuration, the first folding joint 42 has a simple structure, is easy to manufacture and implement, and has strong linkage. Furthermore, the rotating slider 4232 is connected to the first driven member 44 to drive the second folding joint 43. The design associates the unlocking structure of the backrest bracket 21 and the rear leg bracket 22, simplifying their overall structure. This ingenious design allows the user to manually drive the first driving component 41 to fold and retract the backrest bracket 21 and the rear leg bracket 22 via the first folding joint 42 and the second folding joint 43, simplifying operation and further optimizing the user experience. In other embodiments, the fixed slider 4231 is connected to the locking strip 412, enabling the fixed slider 4231 to move between the first connecting bracket 421 and the second connecting bracket 422 via the locking strip 412.

[0068] like Figure 10As shown in Figure 11, in some embodiments, the second folding joint 43 includes a third connecting bracket 431 connected to the rear leg bracket 22, a fourth connecting bracket 432 connected to the front leg bracket 23, and a second transmission component 43364 disposed between the third connecting bracket 431 and the fourth connecting bracket 432. The third connecting bracket 431 and the fourth connecting bracket 432 are rotatably connected. The first driven member 44 is connected to the second transmission component 43364. The first driving component 41 unlocks the first folding joint 42 to drive the first driven member 44 to move, thereby further unlocking the second transmission component 43364 through the first driven member 44, so that the third connecting bracket 431 can rotate relative to the fourth connecting bracket 432, and drive the rear leg bracket 22 to rotate and retract toward the front leg bracket 23. Furthermore, the second transmission assembly 43364 includes a first locking pin 4331 slidably connected in the third connecting bracket 431 and a second locking pin 4332 telescopically connected in the third connecting bracket 431. The third connecting bracket 431 has a second slot 4311 adapted to the first locking pin 4331, and the fourth connecting bracket 432 has a third slot 4321 adapted to the second locking pin 4332. The first locking pin 4331 is driven by the first driven member 44 to insert or disengage from the second slot 4311. When the first locking pin 4331 disengages from the second slot 4311, the third connecting bracket 431 can rotate relative to the fourth connecting bracket 432 to drive the rear leg bracket 22 to rotate and retract relative to the front leg bracket 23. The second locking pin 4332 rotates through the third connecting bracket 431 to insert into the third slot 4321, so that the rear leg bracket 22 is fixed in the rear leg retracted position. Furthermore, the third slot 4321 is provided with a first guide portion 43211, which guides the second locking pin 4332 to disengage from the third slot 4321, so that the third connecting bracket 431 can rotate relative to the second connecting bracket 422, and drive the rear leg bracket 22 to rotate relative to the front leg bracket 23 from the rear leg folded position to the rear leg unfolded position.

[0069] In this embodiment, the third connecting bracket 431 and the fourth connecting bracket 432 are detachably connected to the rear foot bracket 22 and the front foot bracket 23. One end of the first follower 44 is connected to the rotating slider 4232, and the other end is connected to the first locking pin 4331. When the rear foot bracket 22 is in the rear foot unfolded position, the first locking pin 4331 is inserted into the second locking groove 4311 to lock the second folding joint 43, thereby restricting the rotation of the third connecting bracket 431 relative to the fourth connecting bracket 432, so that the rear foot bracket 22 is fixed in place. The rear leg is positioned to ensure the normal use of the stroller frame. When the first driven member 44 moves upward in the rear leg bracket 22 via the rotating slider 4232, the first driven member 44 drives the first locking pin 4331 to move away from the third connecting bracket 431 within the second locking groove 4311, so that the first locking pin 4331 disengages from the second locking groove 4311 and unlocks the second folding joint 43. At this time, the rear leg bracket 22, under external force, can drive the third connecting bracket 431 to rotate relative to the fourth connecting bracket 432 via the second rotating part 632. The rear foot support 22 is rotated toward the front foot support 23 to the rear foot folded position, thereby achieving the folding and retraction of the rear foot support 22 relative to the front foot support 23. The second folding joint 43 has a simple overall structure and is easy to operate. The second folding joint 43 is connected to the first folding joint 42 through the first follower 44. By associating the unlocking structures in the back support 21 and the rear foot support 22, the linkage between the first folding joint 42 and the second folding joint 43 is strong and cleverly designed. The user only needs to manually drive the first drive component 41 to fold the first folding joint. The joint 42 and the second folding joint 43 enable the back support 21 and the rear leg support 22 to be folded and folded, which is simple to operate and further optimizes the user experience. During the folding and folding process of the rear leg support 22, the third connecting bracket 431 drives the second locking pin 4332 to rotate and engage with the third locking groove 4321, thereby fixing the third connecting bracket 431 relative to the fourth connecting bracket 432, so that the folded and folded rear leg support 22 is fixed in the rear leg folding position, preventing the rear leg support 22 from being unstable when folded and folded and easily unfolded, which would cause inconvenience to the user during transportation.In other embodiments, the fourth connecting bracket 432 is provided with a limiting block 4322, which is used to limit the rotation angle of the third connecting bracket 431 relative to the fourth connecting bracket 432; the first guide portion 43211 is preferably configured as an annular inner chamfer portion located in the third slot 4321, and the third connecting bracket 431 is provided with a return spring connected to the second locking pin 4332. When the second locking pin 4332 is engaged and fixed with the third slot 4321, the rear foot bracket 22 can be driven by external force to move the second locking pin 4332 away from the front foot bracket. The second pin 4332 rotates in the direction of rotation and moves away from the third slot 4321 by pushing the second pin 4332 away from the third slot 4321 through the first guide part 43211. At the same time, the second pin 4332 squeezes the return spring so that the second pin 4332 can disengage from the third slot 4321, thereby realizing the rotation of the rear foot bracket 22 to the rear foot unfolded position for user use. Further preferably, the end of the second pin 4332 may also be provided with an annular outer chamfer corresponding to the first guide part 43211 to enhance the guiding movement effect of the first guide part 43211 on the second pin 4332.

[0070] like Figure 12 As shown in Figure 19, in order to enable child vehicles 7, such as child seats and child carriers, to be securely and quickly installed on the backrest bracket 21, the stroller body 1 also includes a locking device 5 connected to the backrest frame. The locking device 5 has a first mounting part 51 for connecting the child vehicle 7 and a second mounting part 52 for connecting the backrest bracket 21 on both sides. The locking device 5 includes a locking component 53, a second drive component 54 connected to the locking component 53, and a linkage reset component 55. The locking component 53 is used to lock and fix the child vehicle 7. The second drive component 54 is used to switch the locking component 53 from a locked state to an unlocked state relative to the child vehicle 7. The linkage reset component 55 can reset the locking component 53 from an unlocked state to a locked state. When the locking component 53 is in an unlocked state, the linkage reset component 55 is used to keep the locking component 53 in an unlocked state and prevent the locking component 53 from switching to a locked state.

[0071] Figure 13 and Figure 18 The locking component 53 is in the locked state. Figure 14 and Figure 19The locking component 53 is in the unlocked state. In this embodiment, the locking device 5 is installed in a stroller for use. Child seats, child carriers, and other child vehicles 7 can be installed on the stroller through the locking device 5. This embodiment takes a child seat as an example. The first mounting part 51 is detachably connected to the child seat, and the child seat is locked and fixed by the locking component 53 to make the child seat more stable when installed or removed. In practical applications, the locking component 53 has a locked state and an unlocked state for the child seat. When the locking component 53 is in the locked state, the child seat can be stably installed in the stroller for the child to use, thereby improving the child's safety and comfort and making it convenient for guardians to take the child out. When the user manually drives the second drive component 54, the locking component 53 can be switched from the locked state to the unlocked state. At this time, the user can lift the child vehicle 7. The child carrier 7 can be detached by moving its relative position to the frame. The locking component 53 is kept in the unlocked state by the linkage reset component 55, so that the user can directly remove the child seat from the frame for replacement with other child carriers 7, such as child carriers. The locking component 53 is unlocked with one click by the second drive component 54 and is detachably set by the first mounting part 51, so that the child carrier 7 can be easily removed. During the removal of the child carrier 7, the locking component 53 can be switched from the unlocked state to the locked state by the linkage reset component 55 under external force, so as to facilitate the quick installation and fixation of the child carrier 7. The operation is simple, time-saving and labor-saving, and convenient for users to change to different child carriers 7 as needed. Preferably, the locking device 5 is compatible with the installation of various child carriers 7, has strong versatility, does not require the configuration of additional adapter installation mechanism, and is convenient for daily use.

[0072] like Figure 12 As shown in Figure 16, in some embodiments, the locking device 5 includes a first housing 56, and the locking assembly 53 includes a movable member 531 movably disposed within the first housing 56, a first slot 532 disposed in the movable member 531 and facing outward from the first housing 56, and a second slot 533 communicating with the first slot 532 in the first housing 56. The movable member 531 is driven to move downward within the first housing 56 by the second driving assembly 54, thereby causing the first slot 532 to move downward relative to the second slot 533, thus misaligning the first slot 532 and the second slot 533, and thus switching the first locking assembly 53 to an unlocked state. Further, the first housing 56 is provided with a second elastic member 534 connected to the movable member 531. The second elastic member 534 is used to move the movable member 531 upward within the first housing 56 to reset, and to cause the first slot 532 to move upward relative to the second slot 533 until it aligns with the second slot 533, thereby switching the first locking assembly 53 to a locked state.

[0073] In this embodiment, the first housing 56 has a movable space within it for the movable component 531 to move vertically and connect to the outside. The movable component 531 is installed within this movable space, with the first slot 532 and the second slot 533 facing the side of the child carrier 7 to facilitate direct connection to the child carrier 7. Preferably, the child carrier 7 is provided with a laterally extendable slider. When the first locking component 53 is in the locked state, the first slot 532 and the second slot 533 align and engage to form a positioning groove 6412. This positioning groove 6412 is connected to the child carrier 7. The slider is adapted to the positioning groove 6412 so that the slider can be fixed in the positioning groove 6412, thereby locking the child carrier 7 with the first locking component 53. More preferably, a second groove 533 is provided on both sides of the first groove 532. When the moving component 531 moves down in the first housing 56 through the second driving component 54, the moving component 531 drives the first groove 532 to move down relative to the second groove 533, so that the first groove 532 and the second groove 533 are misaligned. At this time, the first locking component 53 is in the unlocked state. Figure 13 , 14As shown in Figures 18 and 19, preferably, the movable component 531 is provided with a guide ramp 5311 located above the first slot 532. During the downward movement of the first slot 532, the guide ramp 5311 pushes the slider. Simultaneously, as the second slot 533 moves downward relative to the first slot 532, the wall of the first housing 56 located above the second slot 533 forms a second limiting part 553 to prevent the slider from inserting into the positioning slot 6412. This keeps the slider retracted towards the child carrier 7 to disengage from the positioning slot 6412, thereby allowing the child carrier 7 to be unlocked and disassembled from the first locking assembly 53. Furthermore, a second elastic element 534 is provided inside the first housing 56. The second elastic element 534 is connected to the lower part of the moving member 531. When the linkage reset assembly 55 is released from the restriction of the first locking assembly 53 by external force, the moving member 531 can automatically move upward and reset within the first housing 56 through the second elastic element 534, thereby driving the first slot 532 to move upward relative to the second slot 533 until it aligns with the corresponding second slot 533. This allows the slider to directly extend into the aligned first slot 532 and second slot 533 when the user reinstalls the child carrier 7, thus fixing the child carrier 7 in the frame. With the above settings, the user only needs to manually drive the second drive component 54 to unlock the first locking component 53, thereby allowing the child vehicle 7 to be removed from the frame. The operation is simple, convenient, and quick. Moreover, the first locking component 53 has a memory characteristic, automatically returning to the lockable state via the second elastic element 534. The design is ingenious and the structure is simple, making it easy to manufacture and implement. Preferably, the second elastic element 534 is a return spring, which is easy to obtain and has low production costs. More preferably, the moving component 531 can be provided with a plurality of first slots 532, which are vertically spaced on the moving component 531. In section 31, the first housing 56 may be provided with a second slot 533 corresponding to each of the first slots 532. When the child carrier 7 is subjected to external force, it moves up and down relative to the locking device 5, and drives the slider to move up and down relative to the first slot 532 and the second slot 533. When the first locking component 53 is in the locked state, the first slot 532 and the second slot 533 are aligned and form a positioning groove 6412 that is engaged and fixed with the slider. By setting multiple levels of the first slot 532 and the second slot 533, the installation height of the child carrier 7 can be adjusted, thereby increasing the functionality of the frame and further optimizing the user experience.

[0074] like Figure 12As shown in Figure 19, in some embodiments, the second drive assembly 54 includes a first unlock button 541 that is vertically mounted in the first housing 56. The first unlock button 541 is connected to the moving member 531 and is used to drive the moving member 531 to move up and down within the first housing 56. Figure 18 and Figure 19 As shown, in this embodiment, the first unlock button 541 is connected to the upper part of the moving member 531 and close to the top of the first housing 56. The first unlock button 541 is exposed on the side facing the human body for easy operation. Manually driving the first unlock button 541 downwards within the first housing 56 moves the moving member 531 downwards within the first housing 56, causing the first locking assembly 53 to switch from a locked state to an unlocked state, achieving one-button unlocking. This operation is simple, time-saving, and labor-saving. During reset, the moving member 531 is reset upwards within the first housing 56 via the second elastic member 534, moving the first unlock button 541 upwards to reset, enabling the first unlock button 541 to automatically reset. This simplifies operation and further optimizes the user experience. In some embodiments, the first unlock button 541 and the moving component 531 are integrally formed, which enhances the overall structural stability of the first unlock button 541 and the moving component 531, and the structure is simple and easy to manufacture, thereby improving the efficiency of production. More preferably, the first unlock button 541 is provided with a sliding groove 5411, and the first housing 56 is provided with a corresponding insert plate 561. The sliding groove 5411 is slidably inserted into the insert plate 561 to realize the lifting and lowering connection of the first unlock button 541. The structure is simple and easy to manufacture. More preferably, the depth of the groove is greater than the height of the insert plate 561, providing sufficient movement space for the lifting and lowering process of the first unlock button 541.

[0075] like Figure 12As shown in Figure 19, in some embodiments, the linkage reset assembly 55 includes a locking rod 551 connected to the moving member 531 and a third elastic member 552 disposed between the locking rod 551 and the moving member 531. The first housing 56 is provided with a second limiting part 553 corresponding to the locking rod 551. The moving member 531 moves downward within the first housing 56 via the second driving assembly 54 to drive the locking rod 551 to move downward relative to the second limiting part 553. The locking rod 551 is ejected by the third elastic member 552 to abut against the bottom of the second limiting part 553. The first locking assembly 53 is held in the unlocked state by the second limiting part 553. Furthermore, the second limiting part 553 includes a baffle 5531 disposed in the first housing 56 and near the top of the first housing 56, and a limiting groove 5532 for accommodating the locking rod 551. The limiting groove 5532 is disposed inside the first housing 56. The lower part of the baffle 5531 is also provided with a spring outlet 5533 communicating with the limiting groove 5532. When the locking rod 551 moves downward relative to the baffle 5531 through the moving member 531, the locking rod 551 is ejected through the spring outlet 5533 by the third elastic member 552 and abuts against the bottom of the baffle 5531.

[0076] In this embodiment, the locking rod 551 is installed on the upper part of the moving member 531 and located on one side of the first unlocking button 541. Preferably, the locking rod 551 is pivotally connected to the moving member 531 so that the locking rod 551 can rotate relative to the moving member 531 to a certain extent. A third elastic element 552 is provided between the locking rod 551 and the moving member 531. When the locking assembly 53 is in the locked state, the first slot 532 and the second slot 533 are aligned. At this time, the locking rod 551 is placed in the limiting slot 5532 and abuts against the inner wall of the baffle 5531 so that the third elastic element 552 stores energy. When the locking assembly 53 is switched to the unlocked state, the moving member 531 moves down in the first housing 56 and drives the locking rod 551 relative to the moving member 541. The baffle 5531 moves down to the ejection outlet 5533. At this time, the locking rod 551 is ejected outward by the elastic force of the second elastic member 534, and the top of the locking rod 551 abuts against the bottom of the baffle 5531 to restrict the moving member 531 from resetting through the second elastic member 534, thereby keeping the locking assembly 53 in the unlocked state so that the user can better disassemble the child carrier 7. The linkage reset assembly 55 has a simple overall structure and is easy to manufacture and implement. More preferably, the third elastic member 552 is a torsion spring, which is easy to obtain, has low production cost, and is easy to assemble. The limiting groove 5532 is preferably set as part of the moving space in the first housing 56, which simplifies the structure of the second limiting part 553 and reduces production cost.

[0077] Furthermore, a protrusion 5511 is provided on the outer side of the locking rod 551, and a second guide portion 55111 is provided at the bottom of the protrusion 5511. When the locking rod 551 is ejected by the third elastic member 552, the protrusion 5511 follows the locking rod 551 and ejects to the outer side of the baffle 5531. The second guide portion 55111, under external force, can cause the locking rod 551 to retract into the limiting groove 5532. Figure 14 As shown, in this embodiment, when the first locking assembly 53 is in the unlocked state, the user can directly remove the child carrier 7 by lifting it upward relative to the frame. At this time, the locking rod 551 abuts against the bottom of the baffle 5531, and the protrusion 5511 is located on the outside of the baffle 5531. During the upward movement of the child carrier 7, the child carrier 7 contacts the protrusion 5511. The protrusion 5511 is pushed by the child carrier 7 and guided by the second guide part 55111 to rotate in the opposite direction and retract into the limiting groove 5532. At this time, the moving member 531 is connected by the second elastic member 534. The locking rod 551 can be moved upward and reset, so that the first locking component 53 is switched from the unlocked state to the locked state, which facilitates the quick installation of the child carrier 7. The operation is simple and does not require additional reset operation, saving time and effort in daily use, thereby optimizing the user experience. More preferably, a third guide part 64121 corresponding to the second guide part 55111 can be provided on the side of the child carrier 7 opposite to the protrusion 5511, thereby ensuring the smooth operation of the second guide part 55111. The second guide part 55111 and the third guide part 64121 are preferably set as compatible guide ramps, which are simple in structure and easy to manufacture and implement.

[0078] like Figure 20As shown in Figure 30, to improve the braking performance of the stroller, the stroller body 1 also includes a brake structure 6 located in the rear foot frame. The second wheel 221 has an axle 2211 and a brake hole 2212 located on the side and surrounding the axle 2211. The brake structure 6 includes a wheel seat 61 connected to the axle 2211, a base 62 located on one side of the wheel seat 61, an operating member 63 rotatably connected to one side of the base 62, and a transmission component 64 located in the base 62. The wheel seat 61 is connected to the axle 2211, and a brake pin 2213 corresponding to the brake hole 2212 is slidably installed in the wheel seat 61. The brake pin 2213 has a braking state when inserted into the brake hole 2212 and a braking state when disengaged from the brake hole 2212. The transmission component 64 includes a rotatably installed movable block 641 and a component slidably installed between the movable block 641 and the base 62. The first transmission member 642 is connected between the first transmission member 642 and the brake pin 2213, and the second driven member is connected between the first transmission member 642 and the brake pin 2213. The first transmission member 642 has a first position and a second position in the movable block 641 corresponding to the braking state and the brake release state, respectively. The movable block 641 is rotated relative to the first transmission member 642 by the operating member 63, thereby switching the first transmission member 642 between the first position and the second position. The second driven member drives the brake pin 2213 to slide relative to the brake hole 2212, so that the brake pin 2213 switches between the braking state and the brake release state. The operating member 63 is connected to a first elastic member 65. When the operating member 63 is reset by the first elastic member 65, the movable block 641 maintains its current posture, so that the first transmission member 642 is held in the first position or the second position.

[0079] In this embodiment, wheels and wheel seats 61 are provided on both the left and right sides of the rear foot bracket 22. Two sets of transmission components 64 are provided between the two wheels. Each of the two transmission components 64 is equipped with a base 62 connecting the wheel seat 61. An operating element 63 is provided between the two bases 62. The operating element 63 is generally set as a foot pedal. The operating element 63 includes an operating part 631 and a rotating part 632. The operating element 63 is connected between the two bases 62 through the rotating part 632. The operating part 631 can be pressed by the user. The base 62 has a rotating cavity for installing the movable block 641. The first transmission component 642 is slidably connected between the movable block 641 and the base 62. When the user presses the operating element 63 for the first time, the user presses the operating part 631, causing the operating element 63 to rotate downward relative to the base 62 through the rotating part 632, and at the same time, the movable block 641 rotates in the same direction as the operating element 63. Figure 24(In the image: Arrow H3 indicates the current direction of movement of the operating part 631, arrow H4 indicates the current direction of movement of the rotating part 632, and arrow H5 indicates the current direction of movement of the movable block 641.) The movable block 641 rotates relative to the first transmission member 642 via the operating member 63, causing the first transmission member 642 to slide away from the movable block 641 within the base 62. This causes the first transmission member 642 to switch from the second position to the first position. The second driven member contracts towards the brake pin 2213 under the pressure of the first transmission member 642, thereby driving the brake pin 2213 to slide towards the brake hole 2212 and insert into the brake hole 2212. This causes the brake pin 2213 to switch from the released brake state to the brake state, thus achieving the desired braking effect. The braking structure 6 provides braking effect on the wheels. When the user releases the pressure on the operating member 63, the operating member 63 rotates in the opposite direction and resets under the elastic force of the first elastic member 65. At this time, the movable block 641 maintains its current posture, and the first transmission member 642 remains in the first position. That is, when the operating member 63 resets, the movable block 641 is stationary relative to the base 62, so that the first transmission member 642 remains in the first position, thereby keeping the brake pin 2213 in the braking state. When the user presses the operating member 63 a second time, the user presses the operating part 631, causing the operating member 63 to rotate downward relative to the base 62 through the rotating part 632, while simultaneously driving the movable block 641 to rotate relative to the first transmission member 642. Figure 24(In the image: Arrow H3 indicates the current movement direction of the operating part 631, arrow H4 indicates the current movement direction of the rotating part 632, and arrow H5 indicates the current movement direction of the movable block 641). At this time, the first transmission member 642 slides away from the movable block 641 within the base 62 via the movable block 641, causing the first transmission member 642 to change from the first position to the second position. This pulls the second driven member, and through the second driven member, drives the brake pin 2213 to slide away from the brake hole 2212 within the wheel seat 61, causing the brake pin 2213 to change from a braking state to a contact braking state, thereby releasing the braking effect on the wheel. Through the above configuration, the operating member 63 can automatically reset via the first elastic member 65, allowing the user to directly press the operating member 63 to drive the transmission assembly 64, and through the transmission assembly 64, drive the brake pin 2213 to slide relative to the brake hole 2212, thus... The brake pin 2213 switches between the braking and de-braking states, eliminating the need for the user to manually operate the brake pads or pedal by lifting their foot or bending over. Furthermore, when the operating component 63 automatically resets, it does not interfere with the transmission assembly 64, thus ensuring the normal operation of the transmission assembly 64. The brake structure 6 in this embodiment is simple, convenient, quick, and time-saving, optimizing the user experience. Preferably, the first elastic element 65 is a torsion spring, which is readily available and has low production costs. The second driven element is preferably a pull rope, preferably a steel rope, a common transmission structure in the main body 1 of the stroller, ensuring safety, reliability, and durability. More preferably, the brake pin 2213 is connected to a sixth elastic element 22131, which allows the brake pin 2213 to insert into the brake hole 2212, thereby improving the braking response of the brake structure 6. The sixth elastic element 22131 is a spring, which is readily available and has low production costs.

[0080] like Figure 28 , 30As shown, in some embodiments, the movable block 641 is further provided with a second guide groove 6411 and a positioning groove 6412 adapted to the first transmission member 642. The second guide groove 6411 is provided in a plurality of positions and is distributed in a circumferential interval. A positioning groove 6412 is provided between any two second guide grooves 6411. When the first transmission member 642 is placed in the second guide groove 6411, the first transmission member 642 is in the second position; when the first transmission member 642 is placed in the positioning groove 6412, the first transmission member 642 is in the first position. Furthermore, the second guide groove 6411 is provided with a second guide ramp 64111, a third limiting wall 64112 and a fourth limiting wall 64113 located on both sides of the second guide ramp 64111. The second guide ramp 64111 slopes upward from the bottom of the second guide groove 64111 to the top of the fourth limiting wall 64113. A second receiving space 64114 adapted to the first transmission member 642 is provided between the third limiting wall 64112 and the second guide ramp 64111. When the operating member 63 rotates and drives the movable member to rotate relative to the first transmission member 642, the first transmission member 642 moves from the second receiving space 64114 along the second guide ramp 64111 to the fourth limiting wall 64113. The first transmission member 642 is pushed by the second guide ramp 64111 and slides away from the second guide groove 6411 within the base 62. Preferably, the base 62 has a second mounting cavity for accommodating the first transmission member 642, and the second mounting cavity has a first elastic member 65 connected to the first transmission member 642. The first elastic member 65 is used to insert the first transmission member 642 into the second guide groove 6411 or positioning groove 6412. Figure 28 , 30As shown, in this embodiment, the movable block 641 has a second guide groove 6411 and a positioning groove 6412 on one side opposite to the first transmission member 642. Preferably, there are three of each of the second guide grooves 6411 and positioning grooves 6412, and the second guide grooves 6411 and positioning grooves 6412 are distributed circumferentially and intermittently on the side of the movable block 641. Preferably, the second guide ramp 64111 has a certain curvature. When the brake pin 2213 is in the released brake state, the first transmission member 642 extends into the second guide groove 6411 and is placed in the second receiving space 64114. When the operating member 63 drives the movable block 641 to rotate, it drives the second guide ramp 64111 to rotate relative to the first transmission member 642, thereby pushing the first transmission member 642 against the base through the second guide ramp 64111. The first transmission member 642 slides away from the second guide groove 6411. At this time, the first transmission member 642 presses the first elastic member 65. The movable block 641 is further rotated by the operating member 63 so that the positioning groove 6412 is opposite to the first transmission member 642. At this time, the first transmission member 642 is pushed by the first elastic member 65 and inserted into the positioning groove 6412, so that the first transmission member 642 changes from the second position to the first position. Through the setting of the second guide ramp 64111, the first transmission member 642 and the movable block 641 are linked to facilitate the switching of the brake pin 2213 between the brake state and the brake release state, ensuring the normal operation of the brake structure 6. Preferably, the first transmission member 642 is set as a pin and the first elastic member 65 is set as a spring. Both the pin and the spring are easy to obtain and have low production costs.

[0081] More preferably, a third guide portion 64121 is provided within the positioning groove 6412. When the movable block 641 rotates relative to the first transmission member 642, and the first transmission member 642 is positioned in the first position, the third guide portion 64121 is used to guide the first transmission member 642 to slide away from the positioning groove 6412 within the base 62. Figure 28 , 30As shown, in this embodiment, the positioning groove 6412 has a third guide portion 64121 at its edge. Preferably, the third guide portion 64121 is a ring-shaped inner chamfer located at the port of the positioning groove 6412, and the end of the first transmission member 642 has an outer chamfer corresponding to the third guide portion 64121. When the user presses the operating member 63 to rotate for the second time, the first transmission member 642 is located in the positioning groove 6412. The operating member 63 drives the movable block 641 to rotate relative to the first transmission member 642, thereby driving the positioning groove 6412 to rotate relative to the second transmission member 644. The third guide portion 64121 pushes the first transmission member 642 to move away from the positioning groove 6412 in the base 62. At the same time, the new second guide groove 6411 rotates through the movable block 641 to be aligned with the first transmission member 642. Conversely, the first transmission member 642 is switched from the first position to the second position, thereby causing the brake pin 2213 to switch from the braking state to the released state. By providing the third guide part 64121 in the positioning groove 6412, the first transmission member 642 can automatically slide away from the corresponding positioning groove 6412 in the base 62 under the pushing force of the third guide part 64121, without the need for additional driving force. The user only needs to step on the operating member 63 to brake or release the stroller through the transmission assembly 64, which is convenient, quick, and saves time and effort. Further preferably, the first transmission member 642 is connected to a fifth elastic member 6421. The fifth elastic member 6421 is used to insert the first transmission member 642 into the second guide groove 6411 or the positioning groove 6412. The fifth elastic member 6421 is set as a spring, which is easy to obtain and has a low production cost.

[0082] Preferably, the transmission assembly 64 further includes a second transmission member 644 slidably mounted between the movable block 641 and the operating member 63. The second transmission member 644 is on a different side from the first transmission member 642. The movable block 641 is provided with a first guide groove 6413 adapted to the second transmission member 644. The first guide groove 6413 is provided in a plurality of places and is distributed in a circumferential manner. When the operating member 63 is reset, it drives the second transmission member 644 to rotate and guides the second transmission member 644 to slide away from the first guide groove 6413 in the operating member 63 through the first guide groove 6413, so that the movable block 641 maintains its current posture. The second transmission member 644 is connected to a fourth elastic member 6441. The fourth elastic member 6441 is used to insert the second transmission member 644 into the corresponding first guide groove 6413. Furthermore, the first guide groove 6413 is provided with a first guide ramp 64131, a first limiting wall 64132 and a second limiting wall 64133 located on both sides of the first guide ramp 64131. The first guide ramp 64131 slopes upward from the bottom of the first guide groove 6413 to the top of the second limiting wall 64133. A first receiving space 64134 adapted to the second transmission member 644 is provided between the first limiting wall 64132 and the first guide ramp 64131. When the operating member 63 drives the second transmission member 644 to rotate, The second transmission member 644 drives the movable block 641 to rotate relative to the first transmission member 642 via the first limiting wall 64132; when the operating member 63 is reset, it drives the second transmission member 644 to rotate, and the second transmission member 644 moves from the first receiving space 64134 along the first guide ramp 64131 to the second limiting wall 64133. The second transmission member 644 is pushed by the first guide ramp 64131 and slides within the operating member 63, so that the second transmission member 644 disengages from the first guide groove 6413. Figure 27 , 29As shown, in this embodiment, the first guide groove 6413 is provided in a plurality of rings distributed in one side of the movable block 641 facing the second transmission member 644. The first guide groove 6413 and the second guide groove 6411 are on different sides, and the second transmission member 644 and the first transmission member 642 are on different sides. The first guide ramp 64131 and the second guide ramp 64111 have similar structures. Preferably, the first guide ramp 64131 has a certain curvature. When the brake pin 2213 is in the released brake state, the second transmission member... When component 644 extends into the first guide groove 6413 and is placed within the first receiving space 64134, and the operating component 63 drives the second transmission component 644 to rotate, the second transmission component 644 abuts against the first limiting wall 64132 and drives the movable block 641 to rotate in the same direction, during the rotation, the movable block 641 drives the first guide ramp 64131 to rotate, so that the first transmission component 642 is switched from the second position to the first position, thereby switching the brake pin 2213 from the brake-released state to the braked state; when the operating component 63 When the first elastic element 65 automatically resets, the operating element 63 drives the second transmission element 644 to rotate in the opposite direction and reset. At this time, the second transmission element 644 moves from the first accommodating space 64134 along the first guide ramp 64131 to the second limiting wall 64133. Simultaneously, the first guide ramp 64131 pushes the second transmission element 644 to slide away from the corresponding first guide groove 6413 within the operating element 63. The operating element 63 further drives the second transmission element 644 to rotate, so that the second transmission element 644 is in contact with the next... The first guide grooves 6413 are opposite each other and are inserted into the next first guide groove 6413 by the elastic force of the fourth elastic member 6441, thereby preparing for the re-transmission of the movable block 641. The overall structure of the movable block 641 is simple and easy to manufacture. Preferably, the operating member 63 is provided with a first mounting cavity for accommodating the second transmission member 644. The fourth elastic member 6441 is installed in the first mounting cavity and connected to the second transmission member 644. The fourth elastic member 6441 is preferably a spring, which is easy to obtain and has a low production cost.

[0083] Preferably, to improve the ease of use of the stroller body 1 at night, the stroller body 1 further includes a light-emitting component and a power supply device disposed in the frame assembly 2. The light-emitting component is used to make the frame assembly 2 emit light. In this embodiment, the light-emitting component is preferably disposed at the bottom of the rear leg support 22 and the bottom of the front leg support 23, so as to better observe the road conditions and the child's situation when pushing the stroller body 1 at night. The light-emitting component is preferably an LED light strip, which is widely used and has low cost. The power supply device is preferably disposed in the rear leg support 22 and is used to supply power to the light-emitting component. The power supply device can be a conventional power supply device, which is convenient for production implementation and safe and reliable. In addition, the light-emitting component can also improve the aesthetics of the stroller body 1 and optimize the user experience when in use.

[0084] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A foldable stroller that is easy to store, comprising a stroller body (1), characterized in that, The main body (1) of the stroller includes a frame assembly (2), a support assembly (3), and a folding structure connected to the frame assembly (2). The frame assembly (2) has a first unfolded state and a first folded state through the folding structure. The frame assembly (2) includes a back support (21), a rear leg support (22), and a front leg support (23). The back support (21) and the rear leg support (22) rotate relative to the front leg support (23) through the folding structure. The back support (21) has a back-opening position and a back-folding position corresponding to the first unfolded state and the first folded state, respectively. The rear leg support (22) has a rear leg open position and a rear leg folding position corresponding to the first unfolded state and the first folded state, respectively. The support component (3) is connected between the rear foot bracket (22) and the front foot bracket (23). The support component (3) has a second unfolded state and a second folded state corresponding to the first unfolded state and the first folded state, respectively. The front support (23) and the rear support (22) are respectively provided with a first wheel (231) and a second wheel (221); When the frame assembly (2) switches from the first unfolded state to the first retracted state, the support assembly (3) also switches from the second unfolded state to the second retracted state, and the frame in the first retracted state is given an upright posture by the support assembly (3) and the first wheel (231). The vehicle retraction structure includes a first drive assembly (41) disposed in the backrest bracket (21), a first folding joint (42) disposed between the front foot bracket (23) and the backrest bracket (21), a second folding joint (43) disposed between the front foot bracket (23) and the rear foot bracket (22), and a first follower (44) disposed between the first folding joint (42) and the second folding joint (43). The rear foot bracket (22) is located below the backrest bracket (21). The first drive component (41) is used to unlock the first folding joint (42). The back support (21) can rotate toward the front foot support (23) through the first folding joint (42) so that the back support (21) rotates from the back-open position to the back-closed position. The second folding joint (43) is further unlocked through the first follower (44). The rear foot support (22) can rotate relative to the front foot support (23) through the second folding joint (43) so that the rear foot support (22) rotates from the rear foot open position to the rear foot closed position. The second folding joint (43) includes a third connecting bracket (431) connected to the rear leg bracket (22), a fourth connecting bracket (432) connected to the front leg bracket (23), and a second transmission component (43364) disposed between the third connecting bracket (431) and the fourth connecting bracket (432). The third connecting bracket (431) and the fourth connecting bracket (432) are rotatably connected. The first driven member (44) is connected to the second transmission component (43364). The first driving component (41) unlocks the first folding joint (42) to drive the first driven member (44) to move, thereby further unlocking the second transmission component (43364) through the first driven member (44) so ​​that the third connecting bracket (431) can rotate relative to the fourth connecting bracket (432) and drive the rear leg bracket (22) to rotate and retract toward the front leg bracket (23). The second transmission assembly (43364) includes a first locking pin (4331) slidably connected in a third connecting bracket (431) and a second locking pin (4332) telescopically connected in the third connecting bracket (431). The third connecting bracket (431) is provided with a second slot (4311) adapted to the first locking pin (4331). The first locking pin (4331) is driven by the first follower (44) to insert or disengage from the second slot (4311).

2. The foldable stroller for easy storage as described in claim 1, characterized in that, The support assembly (3) includes a support rod (31) and a support block (32). The rear foot bracket (22) is provided with a first connecting part (222), and the front foot bracket (23) is provided with a second connecting part (232). The support rod (31) and the support block (32) are rotatably connected at one end, and the other end of the support rod (31) is rotatably connected to the first connecting part (222). The other end of the support block (32) is rotatably connected to the second connecting part (232). When the rear foot bracket (22) is switched from the rear foot extended position to the rear foot retracted position, the support rod (31) and the support block (32) are subjected to force and rotate and fold each other to switch from the second extended state to the second retracted state. The support rod (31) and the support block (32) have a first force point (321) that makes the frame assembly (2) stand upright. The first wheel (231) has a second force point (2311) that makes the frame assembly (2) stand upright.

3. A foldable stroller for easy storage as described in claim 2, characterized in that, The diameter of the first wheel (231) is smaller than that of the second wheel (221). When the frame assembly (2) is in the first retracted state and the support assembly (3) is in the second retracted state, the bottom of the first wheel (231) is lower than the bottom of the second wheel (221), and the first force point (321) and the second force point (2311) are approximately on the same horizontal plane.

4. A foldable stroller for easy storage as described in claim 2, characterized in that, A first included angle (A1) is formed between the support rod (31) and the support block (32), a second included angle (A2) is formed between the first connecting part (222) and the support rod (31), and a third included angle (A3) is formed between the second connecting part (232) and the support block (32).

5. A foldable stroller for easy storage as described in claim 4, characterized in that, When the support component (3) is in the second unfolded state, the first included angle (A1), the second included angle (A2) and the third included angle (A3) are all obtuse angles.

6. A foldable stroller for easy storage as described in claim 4, characterized in that, When the support component (3) is in the second retracted state, the first included angle (A1), the second included angle (A2) and the third included angle (A3) are all acute angles.

7. A foldable stroller for easy storage as described in claim 1, characterized in that, The stroller body (1) also includes a locking device (5) connected to the backrest bracket (21). The locking device (5) has a first mounting part (51) for connecting the child carrier (7) and a second mounting part (52) for connecting the backrest bracket (21) on both sides. The locking device (5) includes a locking component (53), a second drive component (54) connected to the locking component (53), and a linkage reset component (55). The locking component (53) is used to lock and fix the child carrier (7). The second drive component (54) is used to switch the locking component (53) from a locked state to an unlocked state relative to the child carrier (7). The linkage reset component (55) can reset the locking component (53) from an unlocked state to a locked state. When the locking component (53) is in an unlocked state, the linkage reset component (55) is used to keep the locking component (53) in an unlocked state and restrict the locking component (53) from switching to a locked state.

8. A foldable stroller for easy storage as described in claim 1, characterized in that, The main body (1) of the stroller also includes a brake structure (6) disposed in the rear foot bracket (22). The second wheel (221) is provided with an axle (2211) and a brake hole (2212) located on the side and surrounding the axle (2211). The brake structure (6) includes a wheel seat (61) connected to the axle (2211), a base (62) disposed on one side of the wheel seat (61), an operating member (63) rotatably connected to one side of the base (62), and a component disposed on the base (62). The transmission assembly (64) includes a wheel seat (61) connected to the wheel axle (2211). A brake pin (2213) corresponding to the brake hole (2212) is slidably installed inside the wheel seat (61). The brake pin (2213) has a braking state when inserted into the brake hole (2212) and a braking state when disengaged from the brake hole (2212). The transmission assembly (64) includes a rotatably mounted movable block (641) and a slidably mounted on the movable block (641) and the base (6). 2) A first transmission member (642) between the first transmission member (642) and a second driven member connected between the first transmission member (642) and the brake pin (2213). The first transmission member (642) has a first position and a second position in the movable block (641) corresponding to the braking state and the brake release state, respectively. The movable block (641) is rotated relative to the first transmission member (642) by the operating member (63), thereby switching the first transmission member (642) between the first position and the second position. The second driven member drives the brake pin (2213) to slide relative to the brake hole (2212), so that the brake pin (2213) switches between the braking state and the brake release state. The operating member (63) is connected to a first elastic member (65). When the operating member (63) is reset by the first elastic member (65), the movable block (641) maintains its current posture, so that the first transmission member (642) remains in the first position or the second position.

9. A foldable stroller for easy storage as described in claim 1, characterized in that, The main body (1) of the stroller also includes a light-emitting component and a power supply device for power supply in the frame assembly (2), wherein the light-emitting component is used to make the frame assembly (2) emit light.

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