Foldable child stroller

Abstract

The utility model relates to the technical field of baby carriages, and discloses a foldable baby stroller which comprises a stroller frame and a seat, and the seat is arranged on the stroller frame in a rotatable and foldable mode. The seat comprises a seat cushion and a backrest, the seat cushion is rotatably connected with the backrest, and the seat cushion can be rotatably folded towards the backrest side; the frame comprises a front foot, a rear foot and a handle which are rotatably connected, and first locking pieces are movably arranged among the front foot, the rear foot and the handle; when the first locking piece is unlocked, the handle can rotate and draw close to the rear foot, and the front foot is driven to rotate and draw close to the rear foot, so that the frame is folded. The baby stroller has the advantages of being convenient to fold, simple in structure, small in size after being folded and small in occupied space.

Description

Technical Field

[0001] This utility model relates to the field of children's stroller technology, and in particular to a foldable children's stroller. Background Technology

[0002] Strollers are an essential tool for taking children out. To make them easy to carry and transport, strollers are usually designed to be foldable. When you need to use the stroller, you unfold it, and when you don't need to use it, you fold it up to reduce its size and the space it takes up.

[0003] Existing foldable strollers generally consist of a seat and a frame, both of which can be folded up when the stroller is folded. However, the folding process of existing foldable strollers is cumbersome and their structure is complex. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a foldable children's stroller that is easy to fold, has a simple structure, and is compact in size after folding.

[0005] The technical solution adopted by this utility model to solve its technical problem is to propose a foldable children's stroller, comprising:

[0006] A frame and a seat, wherein the seat is rotatably and foldably mounted on the frame;

[0007] The seat includes a seat cushion and a backrest, the seat cushion and the backrest are rotatably connected, and the seat cushion can be rotated and folded toward the backrest.

[0008] The frame includes a front leg, a rear leg, and a handlebar that are rotatably connected. A first locking element is movably provided between the front leg, the rear leg, and the handlebar. When the first locking element is unlocked, the handlebar can rotate toward the rear leg and drive the front leg to rotate toward the rear leg to fold the frame.

[0009] Furthermore, the seat also includes armrests, and the seat cushion, the armrests, and the backrest are rotatably connected;

[0010] When the seat cushion is lifted from front to back and rotated and folded towards the backrest, the seat cushion causes the armrest to rotate backward and move closer to the backrest.

[0011] Furthermore, a second locking member is movably provided between the backrest and the frame, the second locking member being able to lock the backrest onto the frame;

[0012] When the seat cushion rotates and folds towards the backrest, the seat cushion can unlock the second locking member, releasing the lock on the backrest.

[0013] Furthermore, the rotation centers of the seat cushion and the armrest coincide;

[0014] The seat cushion is provided with a first arc-shaped groove, which gradually moves away from the rotation center from one end to the other; the armrest is provided with a second arc-shaped groove, which gradually moves away from the rotation center from one end to the other.

[0015] The frame is provided with a first sliding groove, which is arranged radially along the rotation center; a first sliding pin is movably disposed in the first sliding groove, and the first sliding pin is movably disposed in the first arc-shaped groove and the second arc-shaped groove; when the seat cushion rotates and folds, the seat cushion pushes against the first sliding pin through the first arc-shaped groove, and the first sliding pin squeezes the second arc-shaped groove, causing the armrest to rotate and fold towards the backrest.

[0016] Furthermore, the armrest is also provided with a slot, which is connected to one end of the second arc-shaped groove, and the slot is arranged radially along the rotation center; the first sliding pin can be inserted into the slot to lock the armrest in the unfolded state.

[0017] Furthermore, the second locking member is telescopically movably disposed on the backrest, and a locking groove is provided on the frame. When the second locking member is locked into the locking groove, the backrest is locked.

[0018] The seat cushion is provided with a driving block. The seat cushion can directly or indirectly push the second locking member through the driving block, so that the second locking member disengages from the locking groove and unlocks the backrest.

[0019] The rotation centers of the seat, armrest, and backrest coincide. When the second locking member is unlocked, the seat rotates and folds, causing the armrest and backrest to rotate and fold onto the frame.

[0020] Furthermore, the handle is provided with an unlocking module, and the unlocking module can unlock the first locking member; the rotation centers of the front foot and the handle coincide.

[0021] The handle is provided with a third arc-shaped groove, which gradually moves away from the rotation center from one end to the other; the front foot is provided with a fourth arc-shaped groove, which gradually moves away from the rotation center from one end to the other.

[0022] The rear foot is provided with a second sliding groove, which is arranged radially along the rotation center; a second sliding pin is movably provided in the second sliding groove, and the second sliding pin is movably inserted in the third arc-shaped groove and the fourth arc-shaped groove; when the unlocking module unlocks the first locking member: the handle rotates and folds towards the rear foot under the action of gravity, and it pushes against the second sliding pin through the third arc-shaped groove, and the second sliding pin squeezes the fourth arc-shaped groove, causing the front foot to rotate and fold towards the rear foot.

[0023] Furthermore, the handle is provided with a first locking groove, and the front foot is provided with a second locking groove;

[0024] The first locking member is telescopically mounted on the rear foot, and the first locking member can extend into the first locking groove and the second locking groove to lock the handlebar and the front foot on the rear foot, so that the frame is kept in the unfolded state.

[0025] Furthermore, the unlocking module includes an unlocking handle, a double-lock button, and an unlocking lever. The unlocking lever is movably mounted on the handle, and the double-lock button and the unlocking handle are movably mounted on the unlocking lever.

[0026] When the double-lock button is pressed, pulling the unlocking handle can drive the unlocking rod, causing the unlocking rod to push against the first locking member, and the first locking member to disengage from the first locking slot and the second locking slot.

[0027] Furthermore, when the stroller is folded up, the seat, armrest, backrest, and handle rotate in the same direction, and the direction of rotation of the four components is opposite to the direction of the front foot.

[0028] Compared with the prior art, the present invention has at least the following beneficial effects:

[0029] 1. In this utility model, the seat is rotatably and foldably mounted on the frame, and both the seat and the frame are foldable. Lifting the seat cushion allows it to rotate and fold towards the backrest; after unlocking the first locking mechanism, the handlebars, under their own weight, rotate towards the rear foot, and during the folding process, drive the front foot to rotate towards the rear foot, thus folding the frame. The folding of both the seat and the frame is simple, meaning the stroller is easy to fold, and the folded size is compact and takes up little space.

[0030] 2. In this utility model, the seat also includes armrests. The seat cushion, armrests and backrest can all be rotated and folded. When the seat cushion rotates and folds from front to back, the seat cushion pushes against the first sliding pin through the first arc groove on it, so that the first sliding pin squeezes the second arc groove on the armrest, so that the armrest rotates and folds towards the backrest side. The armrest folding is simple.

[0031] 3. In this utility model, during the rotation and folding process of the seat cushion, the driving block on it pushes against the second locking member, causing the second locking member to disengage from the locking groove on the frame and the backrest to unlock. The backrest rotates and folds onto the frame along with the folding of the seat cushion and armrest, making the backrest folding simple.

[0032] 4. In this utility model, the handlebar is provided with an unlocking module, which can unlock the first locking member locked between the rear foot, the front foot, and the handlebar. Under the action of gravity, the handlebar rotates and folds towards the rear foot, and pushes against the second sliding pin through the third arc groove. The second sliding pin pushes against the fourth arc groove, so that the front foot rotates and folds towards the rear foot, making the frame folding simple. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the children's stroller of this utility model when it is in the unfolded state;

[0034] Figure 2 for Figure 1 A three-dimensional view of the joint at point A;

[0035] Figure 3 This is a schematic diagram of the overall seating structure;

[0036] Figure 4 for Figure 3 A partial sectional view of the joint at point B;

[0037] Figure 5 for Figure 3 Exploded view of the joint structure at point B;

[0038] Figure 6 for Figure 3 Top view;

[0039] Figure 7 for Figure 3 A diagram showing the seats after they are folded up;

[0040] Figure 8 This is a diagram showing the distribution of the unlocking modules on the stroller;

[0041] Figure 9 for Figure 1 A partial sectional view of the joint at point A;

[0042] Figure 10 Assembly diagram of the joints of the front leg, rear leg, and handlebars, and the unlocking module;

[0043] Figure 11 An exploded view of the joints of the front foot, back foot, and handlebars;

[0044] Figure 12 for Figure 1 A schematic diagram illustrating the folding process of a children's stroller;

[0045] Figure 13 for Figure 12 A schematic diagram of the structure of a children's stroller after it is further folded up;

[0046] Figure 14 This is a schematic diagram of the structure of a stroller after it has been folded up.

[0047] In the picture:

[0048] 1. Frame; 10. First locking element; 11. Front foot; 12. Rear foot; 13. Handlebar; 14. Unlocking module; 100. Rotation center; 101. First slide groove; 102. First sliding pin; 103. Lock groove; 104. Second sliding pin; 110. Fourth arc groove; 111. Second lock position groove; 120. Second slide groove; 130. Third arc groove; 131. First lock position groove; 141. Unlock handle; 142. Second lock button;

[0049] 2. Seat; 21. Seat cushion; 22. Backrest; 23. Armrest; 200. Rotation center; 210. First arc groove; 211. Drive block; 220. Second locking element; 230. Second arc groove; 231. Slot. Detailed Implementation

[0050] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0051] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0052] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0055] Combination Figures 1-2 and Figures 12-14 As shown, a foldable stroller mainly includes a frame 1 and a seat 2, the seat 2 being rotatably foldable onto the frame 1. The seat 2 includes a cushion 21 and a backrest 22, the cushion 21 and backrest 22 being rotatably connected, and the cushion 21 being foldable towards the backrest 22. The frame 1 includes rotatably connected front legs 11, rear legs 12, and a handle 13, with a first locking element 10 movably disposed between the front legs 11, rear legs 12, and handle 13. In actual use, when the first locking element 10 is unlocked, the handle 13 can rotate towards the rear legs 12, and drive the front legs 11 to rotate towards the rear legs 12, thereby folding the frame 1.

[0056] In this embodiment of the stroller, the seat 2 is rotatably and foldably mounted on the frame 1, and both the seat 2 and the frame 1 are foldable. Lifting the seat cushion 21 allows it to rotate and fold towards the backrest 22. After unlocking the first locking member 10, the handle 13, under its own weight, rotates towards the rear foot 12, and during the folding process, the handle 13 drives the front foot 11 to rotate towards the rear foot 12, thus folding the frame 1. The folding of both the seat 2 and the frame 1 is simple, meaning the stroller is easy to fold, and when folded, it is compact and occupies little space.

[0057] Furthermore, in this embodiment of the stroller, the seat 2 also includes an armrest 23. The seat cushion 21, armrest 23, and backrest 22 are all rotatably connected to facilitate the rotation and folding of the seat 2. In actual use, when the user lifts the seat cushion 21 from front to back, causing the seat cushion 21 to rotate and fold closer to the backrest 22, the seat cushion 21 drives the armrest 23 to rotate backward and closer to the backrest 22. That is, during the process of the seat cushion 21 rotating and folding from front to back towards the backrest 22, the seat cushion 21 will drive the armrest 23 to rotate from front to back and closer to the backrest 22, and the seat cushion 21 and armrest 23 will fold towards the backrest 22.

[0058] Specifically, such as Figures 3-7 As shown, in this embodiment of the stroller, the rotation centers 100 of the seat cushion 21, armrest 23, and backrest 22 in the seat 2 coincide. A second locking member 220 is movably provided between the backrest 22 and the frame 1, which locks the backrest 22 onto the frame 1. When the seat 2 rotates and folds towards the backrest 22, the seat 2 can unlock the second locking member 220, releasing the lock on the backrest 22. Specifically, the second locking member 220 is retractably mounted on the backrest 22, and a tension spring is used between the backrest 22 and the second locking member 220 to achieve the retractable movement of the second locking member 220. A corresponding locking groove 103 is provided on the frame 1. When the second locking member 220 is locked into the locking groove 103, the backrest 22 is locked. That is, at this time, part of the second locking member 220 on the backrest 22 extends out of the backrest 22 and into the locking groove 103, restricting the rotation of the backrest 22, thus locking the backrest 22. A drive block 211 is provided on the seat cushion 21. The seat cushion 21 can directly or indirectly push the second locking member 220 through the drive block 211, causing the second locking member 220 to disengage from the locking groove 103 and unlocking the backrest 22. In this embodiment, the driving block 211 is shown to unlock the second locking member 220 by indirectly pushing the second locking member 220. There is a roughly L-shaped pushing member between the second locking member 220 and the driving block 211, which is used to transmit power. Of course, the second locking member 220 can also be unlocked by the driving block 211 directly driving the second locking member 220, so that there is no need to use the L-shaped pushing member to transmit power.

[0059] In this embodiment, the rotation centers 100 of the seat cushion 21, armrest 23 and backrest 22 in the seat 2 coincide. When the second locking member 220 is unlocked, the seat cushion 21 rotates and folds, which drives the armrest 23 and backrest 22 to rotate and fold onto the frame 1. No additional action is required, and the operation is simple.

[0060] A first arc-shaped groove 210 is provided on the seat cushion 21, which gradually moves away from its rotation center 100 from one end to the other. A second arc-shaped groove 230 is provided on the armrest 23, which also gradually moves away from its rotation center 100 from one end to the other. A first sliding groove 101 is provided on the frame 1, which is radially arranged along the rotation center 100, i.e., perpendicular to the rotation center 100. A first sliding pin 102 is movably disposed in the first sliding groove 101, and the first sliding pin 102 movably passes through the first arc-shaped groove 210 and the second arc-shaped groove 230. In actual use, when the seat cushion 21 rotates and folds, it pushes against the first sliding pin 102 through the first arc-shaped groove 210. The first sliding pin 102 is restricted to sliding only along the first sliding groove 101, and the first sliding pin 102 presses against the second arc-shaped groove 230, causing the armrest 23 to rotate and fold towards the backrest 22, thus achieving automatic folding of the armrest 23. During the process of rotating the seat cushion 21 clockwise from front to back and folding the seat cushion 21, the armrest 23 also rotates and folds clockwise backward, and the backrest 22 also rotates and folds clockwise. Finally, the seat cushion 21, armrest 23, and backrest 22 are all folded onto the frame 1 (e.g., ...). Figure 12 (As shown).

[0061] The armrest 23 is also provided with a slot 231, which is connected to one end of the second arc-shaped groove 230. The slot 231 is arranged radially along the rotation center 100. The first sliding pin 102 can be engaged in the slot 231 to lock the armrest 23 in the unfolded state. That is, in the normal use state, the first sliding pin 102 is engaged in the slot 231 to lock the armrest 23, ensuring the stability of the armrest 23 during use. During the folding of the seat 2, the seat cushion 21 first causes the first sliding pin 102 to disengage from the slot 231, releasing the armrest 23 from locking, and then the first sliding pin 102 slides into the second arc-shaped groove 230.

[0062] In this embodiment of the stroller, the seat 2 includes a seat cushion 21, an armrest 23, and a backrest 22. The seat cushion 21, armrest 23, and backrest 22 can all be rotated and folded. When the seat cushion 21 is rotated and folded from front to back, the seat cushion 21 pushes against the first sliding pin 102 through the first arc groove 210 on it, causing the first sliding pin 102 to press against the second arc groove 230 on the armrest 23, causing the armrest 23 to rotate and fold towards the backrest 22. The folding of the seat cushion 21 drives the folding of the armrest 23 and the backrest 22. The folding of the armrest 23 is simple, the folding of the backrest 22 is simple, and the folding of the seat 2 is simple.

[0063] After seat 2 is folded down, stroller frame 1 needs to be folded down as well.

[0064] Combination Figure 1 as well as Figures 8-14As shown, in this embodiment, the rotation centers 200 of the front foot 11 and the handle 13 coincide. An unlocking module 14 is provided on the handle 13, and the unlocking module 14 can unlock the first locking member 10. The unlocking module 14 includes an unlocking handle 141, a double-lock button 142, and an unlocking rod (not shown in the figure). The unlocking rod is movably mounted on the handle 13, and the double-lock button 142 and the unlocking handle 141 are movably mounted on the unlocking rod. In actual use, when the double-lock button 142 is pressed, pulling the unlocking handle 141 drives the unlocking rod, causing the unlocking rod to push against the first locking member 10, disengaging the first locking member 10 from the first locking groove 131 and the second locking groove 111. Since the unlocking module 14 is an existing structure, it will not be described in detail here.

[0065] Specifically, a third arc-shaped groove 130 is provided on the handle 13, which gradually moves away from its rotation center 200 from one end to the other. A fourth arc-shaped groove 110 is provided on the front foot 11, which also gradually moves away from its rotation center 200 from one end to the other. A second sliding groove 120 is provided on the rear foot 12, which is arranged radially along the rotation center 200, i.e., perpendicular to the rotation center 200. A second sliding pin 104 is movably disposed in the second sliding groove 120, and the second sliding pin 104 movably passes through the third arc-shaped groove 130 and the fourth arc-shaped groove 110. In actual use, when the unlocking module 14 unlocks the first locking member 10: the handle 13 rotates and folds towards the rear foot 12 under the action of gravity, and the handle 13 pushes against the second sliding pin 104 through the third arc groove 130. The second sliding pin 104 is restricted to sliding only along the second sliding groove 120, and the second sliding pin 104 squeezes the fourth arc groove 110, causing the front foot 11 to rotate and fold towards the rear foot 12.

[0066] In this embodiment, the handlebar 13 is provided with a first locking groove 131, and the front foot 11 is provided with a second locking groove 111. The first locking member 10 is telescopically mounted on the rear foot 12. When the first locking member 10 extends into the first locking groove 131 and the second locking groove 111, the first locking member 10 locks the handlebar 13 and the front foot 11 onto the rear foot 12, keeping the frame 1 in the unfolded state. When it is necessary to fold the frame 1, the unlocking module 14 drives the first locking member 10 to retract towards the rear foot 12, disengaging the first locking member 10 from the first locking groove 131 and the second locking groove 111, releasing the locking of the front foot 11 and the handlebar 13, allowing the handlebar 13 and the front foot 11 to fold onto the rear foot 12. During the folding process of the stroller, the seat 21, armrest 23, backrest 22 and handle 13 rotate in the same direction (clockwise), and the rotation direction of the four is opposite to that of the front foot 11, which rotates counterclockwise.

[0067] In actual use, the first locking member 10, which is locked between the rear foot 12, the front foot 11, and the handlebar 13, can be unlocked by the unlocking module 14. Under the action of gravity, the handlebar 13 rotates and folds towards the rear foot 12, and pushes against the second sliding pin 104 through the third arc groove 130. The second sliding pin 104 pushes against the fourth arc groove 110, so that the front foot 11 rotates and folds towards the rear foot 12, making the folding of the frame 1 simple.

[0068] refer to Figure 1 , Figure 3 , Figure 7 as well as Figures 12-14 As shown, the folding principle of this embodiment of the foldable stroller is as follows:

[0069] like Figure 1 As shown, when the stroller is in its normal use state (i.e., unfolded state), to fold it down, the seat 2 is folded first: the seat cushion 21 is lifted, causing it to rotate from front to back. During the rotation, the seat cushion 21 pushes against the first sliding pin 102 through the first arc-shaped groove 210. The first sliding pin 102 disengages from the slot 231 on the armrest 23 and slides into its second arc-shaped groove 230, unlocking the armrest 23. The first sliding pin 102 then pushes against the second arc-shaped groove 230, causing the armrest 23 to fold towards the backrest 22 as the seat cushion 21 rotates from front to back. Furthermore, during the folding process of the seat cushion 21, the seat cushion 21 drives the second locking member 220 on the backrest 22 through its drive block 211, unlocking the backrest 22. Then, the backrest 22, along with the seat cushion 21 and the armrest 23, rotates backward and folds onto the armrest 23, completing the folding of the seat 2 (as shown). Figure 12 (As shown).

[0070] Next, fold the frame 1: Press the double-lock button 142 and pull the unlocking handle 141. The unlocking module 14 pushes against the first locking member 10, causing the first locking member 10 to retract towards the rear foot 12. The first locking member 10 disengages from the first locking groove 131 on the handlebar 13 and the second locking groove 111 on the front foot 11, releasing the lock on the handlebar 13 and the front foot 11. Under the action of gravity, the handlebar 13 rotates downward towards the rear foot 12. During the rotation, the handlebar 13 pushes against the second sliding pin 104 through the third arc groove 130. The second sliding pin 104 pushes against the fourth arc groove 110 on the front foot 11, causing the front foot 11 to rotate towards the rear foot 12 until both the handlebar 13 and the front foot 11 are folded onto the rear foot 12. The folding of the frame 1 is then complete (as shown). Figure 14 As shown in the image, the stroller is now folded up. The unfolding process is the reverse of the folding process, and will not be described in detail here.

[0071] In this design, the stroller is easy to fold, has a simple structure, and is compact and takes up little space when folded.

Claims

1. A foldable children's stroller, characterized in that, include: A frame and a seat, wherein the seat is rotatably and foldably mounted on the frame; The seat includes a seat cushion and a backrest, the seat cushion and the backrest are rotatably connected, and the seat cushion can be rotated and folded toward the backrest. The frame includes a front leg, a rear leg, and a handlebar that are rotatably connected. A first locking element is movably provided between the front leg, the rear leg, and the handlebar. When the first locking element is unlocked, the handlebar can rotate toward the rear leg and drive the front leg to rotate toward the rear leg to fold the frame.

2. The foldable stroller according to claim 1, characterized in that, The seat also includes armrests, and the seat cushion, armrests, and backrest are rotatably connected; When the seat cushion is lifted from front to back and rotated and folded towards the backrest, the seat cushion causes the armrest to rotate backward and move closer to the backrest.

3. The foldable stroller according to claim 2, characterized in that, A second locking member is movably provided between the backrest and the frame, and the second locking member can lock the backrest onto the frame; When the seat cushion rotates and folds towards the backrest, the seat cushion can unlock the second locking member, releasing the lock on the backrest.

4. The foldable stroller according to claim 2, characterized in that, The rotation centers of the seat cushion and the armrest coincide; The seat cushion is provided with a first arc-shaped groove, which gradually moves away from the rotation center from one end to the other; the armrest is provided with a second arc-shaped groove, which gradually moves away from the rotation center from one end to the other. The frame is provided with a first slide groove, which is arranged radially along the rotation center; a first sliding pin is movably provided in the first slide groove, and the first sliding pin is movably inserted in the first arc-shaped groove and the second arc-shaped groove; When the seat cushion rotates and folds, the seat cushion pushes against the first sliding pin through the first arc-shaped groove, and the first sliding pin squeezes the second arc-shaped groove, causing the armrest to rotate and fold towards the backrest.

5. The foldable stroller according to claim 4, characterized in that, The armrest is also provided with a slot, which is connected to one end of the second arc-shaped groove, and the slot is arranged radially along the rotation center; the first sliding pin can be inserted into the slot to lock the armrest in the unfolded state.

6. The foldable stroller according to claim 3, characterized in that, The second locking member is retractably mounted on the backrest, and the frame is provided with a locking groove. When the second locking member is locked into the locking groove, the backrest is locked. The seat cushion is provided with a driving block. The seat cushion can directly or indirectly push the second locking member through the driving block, so that the second locking member disengages from the locking groove and unlocks the backrest. The rotation centers of the seat, armrest, and backrest coincide. When the second locking member is unlocked, the seat rotates and folds, causing the armrest and backrest to rotate and fold onto the frame.

7. The foldable stroller according to claim 1, characterized in that, The handle is equipped with an unlocking module, which can unlock the first locking member; the rotation centers of the front foot and the handle coincide. The handle is provided with a third arc-shaped groove, which gradually moves away from the rotation center from one end to the other; the front foot is provided with a fourth arc-shaped groove, which gradually moves away from the rotation center from one end to the other. The rear foot is provided with a second sliding groove, which is arranged radially along the rotation center; a second sliding pin is movably provided in the second sliding groove, and the second sliding pin is movably inserted in the third arc-shaped groove and the fourth arc-shaped groove; when the unlocking module unlocks the first locking member: the handle rotates and folds towards the rear foot under the action of gravity, and it pushes against the second sliding pin through the third arc-shaped groove, and the second sliding pin squeezes the fourth arc-shaped groove, causing the front foot to rotate and fold towards the rear foot.

8. The foldable stroller according to claim 7, characterized in that, The handle is provided with a first locking groove, and the front foot is provided with a second locking groove; The first locking member is telescopically mounted on the rear foot, and the first locking member can extend into the first locking groove and the second locking groove to lock the handlebar and the front foot on the rear foot, so that the frame is kept in the unfolded state.

9. The foldable stroller according to claim 8, characterized in that, The unlocking module includes an unlocking handle, a double-lock button, and an unlocking lever. The unlocking lever is movably mounted on the handle, and the double-lock button and the unlocking handle are movably mounted on the unlocking lever. When the double-lock button is pressed, pulling the unlocking handle can drive the unlocking rod, causing the unlocking rod to push against the first locking member, and the first locking member to disengage from the first locking slot and the second locking slot.

10. The foldable stroller according to claim 2, characterized in that, When the stroller is folded up, the seat, armrest, backrest, and handle rotate in the same direction, and the direction of rotation of the four components is opposite to the direction of the front foot.

Images