Handrail assembly and frame for a stroller

By designing a rotatable and connectable armrest assembly and frame structure, the problems of inconvenience and insufficient safety of child stroller armrests are solved, and the armrest assembly is easy to operate and the frame is easy to fold and carry.

CN224528756UActive Publication Date: 2026-07-21NINGBO MYBABY BABY & CHILDREN PROD MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO MYBABY BABY & CHILDREN PROD MFG
Filing Date
2025-06-20
Publication Date
2026-07-21

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Abstract

The utility model relates to the technical field of baby carriage, disclose a baby carriage's handrail group and frame, this handrail group sets up in baby carriage's frame, include: first handrail support and second handrail support, both respectively set up in the both sides of frame, first handrail spare and second handrail spare, one end of first handrail spare with first handrail support rotatable connection, the other end of first handrail spare is equipped with first connecting structure, one end of second handrail spare with second handrail support rotatable connection, the other end of second handrail spare is equipped with second connecting structure, and first connecting structure and second connecting structure can be loose connection, when the child enters baby carriage, can with first connecting structure and second connecting structure loose, and will first handrail spare and second handrail spare respectively by the middle to both sides turn open, the utility model's advantage lies in, the structural design of handrail group, can be convenient for the child to enter and exit, and the opening range is small, and the safety performance is high. The overall volume is small after the frame folding, and the occupied space is small, and the packing, transportation is convenient.
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Description

Technical Field

[0001] This utility model relates to the field of children's vehicle technology, and in particular to a children's vehicle armrest assembly and frame. Background Technology

[0002] On the frame of a stroller, there is usually an armrest set near the front of the seat. This allows children to easily place their hands on the armrests and also surrounds the child to protect them.

[0003] In existing strollers, the armrests are generally designed as a single piece, which makes it inconvenient for children to get in and out of the stroller seat as they have to walk around the armrest. Some armrests can be opened from one side to the other to make it easier for children to get in and out, but the opening range is too large and there is a risk of bumping into the child. 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 provide a handrail assembly and frame for a children's stroller that is convenient for children to enter and exit, has a small opening range, and has high safety performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is to propose a handrail assembly for a stroller, which is installed on the frame of the stroller and includes:

[0006] A first handrail support and a second handrail support are provided, wherein the first handrail support is provided on one side of the vehicle frame and the second handrail support is provided on the other side of the vehicle frame;

[0007] A first handrail component and a second handrail component, wherein one end of the first handrail component is rotatably connected to the first handrail support, and the other end of the first handrail component is provided with a first connecting structure; one end of the second handrail component is rotatably connected to the second handrail support, and the other end of the second handrail component is provided with a second connecting structure, and the first connecting structure and the second connecting structure are detachably connected.

[0008] When a child gets in or out of the stroller, the first connecting structure and the second connecting structure can be detached, and the first armrest and the second armrest can be rotated from the middle to both sides respectively.

[0009] Furthermore, one of the first connecting structure and the second connecting structure is configured as a snap fastener, and the other is configured as a slot.

[0010] Furthermore, the buckle includes an elastic arm and a locking block, the locking block is disposed on the elastic arm, and the locking block is provided with an inclined surface, and the locking block can be loosely engaged with the locking groove;

[0011] During the process of the card block engaging with the card slot, the inclined surface is pressed, causing the elastic arm to deform further, and the end of the elastic arm is provided with a pressing part;

[0012] When the card block is engaged in the card slot, pressing the pressing part can drive the card block to disengage from the card slot.

[0013] Furthermore, the first handrail support and the second handrail support are symmetrically arranged on both sides of the vehicle frame, and the first handrail component and the second handrail component are symmetrically arranged on both sides of the vehicle frame;

[0014] When the first connecting structure and the second connecting structure are detached, the first handrail piece and the second handrail piece are turned outwards respectively, forming an opening on the front side of the handrail assembly that allows a child to enter and exit.

[0015] Furthermore, a connecting tube is provided at one end of the first handrail member near the second handrail member and at one end of the second handrail member near the first handrail member, the buckle is provided on one of the connecting tubes, and the slot is provided on the other connecting tube;

[0016] After the two connecting pipes are inserted into each other, the buckle is engaged with the slot.

[0017] Furthermore, a guide sleeve is provided on each side of the frame, the first handrail is supported and inserted through one of the guide sleeves and slides in cooperation with it; the second handrail is supported and inserted through the other guide sleeve and slides in cooperation with it.

[0018] Furthermore, the end of the first handrail support away from the first handrail member and the end of the second handrail support away from the second handrail member are both rotatably connected to the frame, so that the handrail assembly can rotate up and down relative to the frame.

[0019] This utility model also proposes a stroller frame that has a folded state and an unfolded state, and can switch between the two states, including:

[0020] A front leg assembly and a rear leg assembly, wherein the front leg assembly and the rear leg assembly are rotatably connected;

[0021] The device comprises an upper handlebar assembly, a lower handlebar assembly, and a side support rod. The two ends of the lower handlebar assembly are rotatably connected to the rear foot assembly and the upper handlebar assembly, respectively. The side support rod is rotatably connected to the upper handlebar assembly and the rear foot assembly, and is rotatably connected to the front foot assembly via a first connector. The upper handlebar assembly, lower handlebar assembly, side support rod, and rear foot assembly form a four-bar linkage.

[0022] The frame is also equipped with a seat assembly and the aforementioned armrest assembly. Both the seat assembly and the armrest assembly are movably mounted on the frame and can be folded up and unfolded as the frame is folded up.

[0023] Furthermore, a locking gear is movably provided between the upper handlebar assembly and the lower handlebar assembly, and the locking gear can lock the upper handlebar assembly onto the lower handlebar assembly;

[0024] The upper handlebar assembly is provided with a drive turntable that moves against it. The drive turntable can drive the locking gear to move towards the lower handlebar assembly to unlock the upper handlebar assembly.

[0025] The upper handle assembly is equipped with an unlocking grip, which is connected to the drive turntable via a pull cable. The unlocking grip drives the drive turntable via the pull cable.

[0026] A spring is provided between the locking gear and the lower handle assembly. One end of the spring abuts against the locking gear, and the other end of the spring abuts against the lower handle assembly. The spring force causes the locking gear to tend to move in its locking direction.

[0027] After the locking gear is unlocked by pressing the unlocking lever, the upper handlebar assembly can be folded towards the lower handlebar assembly, which in turn causes the armrest assembly, the seat assembly, and the front foot assembly to fold.

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

[0029] In this invention, when a child needs to enter or exit the stroller, the first connecting structure on the first armrest and the second connecting structure on the second armrest can be detached, and the first and second armrests can be rotated open from the middle to both sides respectively. The armrest assembly opens from the middle to both sides, with a small opening range, making operation convenient and less likely to cause injury to the child. During normal use, the first and second connecting structures are connected to each other, so that the armrest assembly is arranged around the front of the frame, making it convenient for the child's hands to rest on the armrest assembly and protecting the child's safety.

[0030] In this utility model, one of the first connecting structure and the second connecting structure is configured as an elastic buckle, and the other is configured as a slot, so as to facilitate the user to engage and disengage the first handrail and the second handrail.

[0031] In this invention, after the frame is unlocked, it can be folded up, meaning the upper handlebar assembly, lower handlebar assembly, side support rods, front leg assembly, and rear leg assembly can all be folded up. The armrest assembly and seat assembly also fold up along with the frame, resulting in a compact size and minimal space occupation after folding. The armrest assembly and seat assembly can also be unfolded as the frame unfolds. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the children's stroller of this utility model;

[0033] Figure 2 This is a half-section diagram of the handrail assembly;

[0034] Figure 3 This is an exploded view of the handrail assembly.

[0035] Figure 4 for Figure 3 A structural diagram from another perspective;

[0036] Figure 5 This is a schematic diagram of the structure of the first and second armrest components after they are rotated outwards on the stroller.

[0037] Figure 6 for Figure 1 A half-section diagram of the joint at point A;

[0038] Figure 7 for Figure 1 Exploded view of joint at point A;

[0039] Figure 8 for Figure 1 Side view;

[0040] Figure 9 A structural diagram illustrating the folding process of a stroller;

[0041] Figure 10 for Figure 9 A schematic diagram of the structure of the stroller after it has been folded up.

[0042] Figure 11 A schematic diagram showing the completed folding structure of the stroller.

[0043] In the picture:

[0044] 100. Handrail assembly; 10. First handrail support; 11. Second handrail support; 12. First handrail component; 13. Second handrail component; 120. First connecting structure; 123. Connecting pipe; 130. Second connecting structure; 131. Elastic arm; 132. Locking block; 133. Pressing part; 132A. Inclined surface;

[0045] 200, Forefoot Group;

[0046] 300, rear foot group;

[0047] 400. Handlebar assembly; 40. Unlocking grip; 451. Locking gear; 452. Drive dial; 453. Spring; 454. Pull cable;

[0048] 500, lower handlebar assembly; 50, guide sleeve;

[0049] 600, Side strut; 60, First connector;

[0050] 700, Seating Group. Detailed Implementation

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] Example 1:

[0057] like Figures 1-5As shown, an armrest assembly 100 for a children's stroller in this embodiment is disposed on the frame of the stroller, near the front side of the frame, so that children can easily rest their hands on the armrest assembly 100. The armrest assembly 100 mainly includes: a first armrest support 10, a second armrest support 11, a first armrest component 12, and a second armrest component 13. The first armrest support 10 is disposed on one side of the frame, and the second armrest support 11 is disposed on the other side of the frame, that is, the first armrest support 10 and the second armrest support 11 are respectively disposed on the left and right sides of the stroller frame, symmetrically arranged. Both the first armrest support 10 and the second armrest support 11 are preferably configured as support rods. One end of the first armrest component 12 is rotatably connected to the first armrest support 10, and the other end of the first armrest component 12 is provided with a first connecting structure 120. One end of the second armrest component 13 is rotatably connected to the second armrest support 11, and the other end of the second armrest component 13 is provided with a second connecting structure 130. The first connecting structure 120 and the second connecting structure 130 are detachably connected, that is, the first connecting structure 120 and the second connecting structure 130 can be quickly detached to facilitate the outward rotation of the first handrail piece 12 and the second handrail piece 13.

[0058] In actual use, when a child needs to get in or out of the stroller, the user can detach the first connecting structure 120 from the second connecting structure 130 and rotate the first armrest 12 and the second armrest 13 from the middle to both sides, thus forming an opening between the first armrest support 10 and the second armrest support 11 for the child to enter and exit.

[0059] In this embodiment, when a child needs to enter or exit the stroller, the first connecting structure 120 on the first armrest 12 and the second connecting structure 130 on the second armrest 13 can be detached, and the first armrest 12 and the second armrest 13 can be rotated open from the middle to both sides respectively. The armrest assembly 100 opens from the middle to both sides, with a small opening range, making operation convenient and less likely to bump into a child. However, if the armrest is a single unit and rotates from one side to the other, the armrest requires a large operating space to rotate, resulting in a large opening range and a higher risk of the armrest bumping into a child. In this embodiment, during normal use, the first connecting structure 120 and the second connecting structure 130 are interconnected, allowing the armrest assembly 100 to encircle the front of the frame, making it convenient for children to rest their hands on the armrest assembly 100 and protecting their safety.

[0060] In this embodiment, the first armrest support 10 and the second armrest support 11 are symmetrically arranged on the left and right sides of the frame, and the first armrest component 12 and the second armrest component 13 are symmetrically arranged on both sides of the frame. This ensures that the openings formed when the first armrest component 12 and the second armrest component 13 are opened are large enough to facilitate children's entry and exit, and that the rotation range of the first armrest component 12 and the second armrest component 13 is minimized. Preferably, in this embodiment, the first armrest component 12 can rotate 360 ​​degrees relative to the first armrest support 10, and the second armrest component 13 can rotate 360 ​​degrees relative to the second armrest support 11.

[0061] In this design, one of the first connecting structure 120 and the second connecting structure 130 is configured as a buckle, and the other is configured as a slot. That is, by interchangeing the positions of the buckle and the slot on the first handrail member 12 and the second handrail member 13, quick release of the first handrail member 12 and the second handrail member 13 can be achieved. Further, the buckle includes an elastic arm 131 and a locking block 132; that is, the buckle is configured as an elastic buckle, and the locking block 132 is disposed on the elastic arm 131, with an inclined surface 132A on the locking block 132. The locking block 132 can be detachably engaged with the slot. During use, as the locking block 132 engages with the slot, the inclined surface 132A is pressed, causing the elastic arm 131 to deform, ensuring that the deformation of the elastic arm 131 is a gradual process and that the engagement is smooth.

[0062] A pressing part 133 is provided at the end of the elastic arm 131. When the locking block 132 is engaged in the locking groove, pressing the pressing part 133 can drive the locking block 132 to disengage from the locking groove. In this embodiment, the elastic buckle and the locking groove are located on the lower surface of the armrest assembly 100, ensuring aesthetics while preventing accidental loosening.

[0063] In actual use, one of the first connecting structure 120 and the second connecting structure 130 in this embodiment is set as an elastic buckle and the other is set as a slot, so that users can easily engage and disengage the first handrail piece 12 and the second handrail piece 13.

[0064] A connecting tube 123 is provided at one end of the first handrail component 12 near the second handrail component 13, and at the other end of the second handrail component 13 near the first handrail component 12. A buckle is provided on one connecting tube 123, and a slot is provided on the other connecting tube 123. After the two connecting tubes 123 are inserted into each other, the buckle engages with the slot. The first handrail component 12 and the second handrail component 13 each have one connecting tube 123, which facilitates the formation of elastic buckles and slots. Furthermore, after prolonged use, if the elastic buckle fatigues and the engagement effect is poor, it also facilitates the replacement of the connecting tube 123 later.

[0065] A guide sleeve 50 is provided on each side of the frame. The first handrail support 10 passes through one of the guide sleeves 50 and slides with it. The second handrail support 11 passes through the other guide sleeve 50 and slides with it. The end of the first handrail support 10 away from the first handrail member 12 and the end of the second handrail support 11 away from the second handrail member 13 are rotatably connected to the frame, allowing the handrail assembly 100 to rotate up and down relative to the frame. That is, during the folding process of the frame, the handrail assembly 100 rotates and folds under the drive of the guide sleeves 50. The relative position of the guide sleeves 50 with respect to the handrail assembly 100 changes, ensuring that the resistance of the handrail assembly 100 is small and the folding is smooth when the frame is folded. When the frame is unfolded for normal use, the two guide sleeves 50 restrict the handrail assembly 100, ensuring that the position of the handrail assembly 100 is reliable.

[0066] Example 2:

[0067] like Figure 1 and Figures 6-11 As shown, the frame of a children's stroller in this embodiment has a folded state and an unfolded state, and can switch between the two states. The stroller frame mainly includes:

[0068] The front leg assembly 200 and the rear leg assembly 300 are rotatably connected.

[0069] The upper handlebar assembly 400, the lower handlebar assembly 500, and the side support rod 600 are provided. The two ends of the lower handlebar assembly 500 are rotatably connected to the rear foot assembly 300 and the upper handlebar assembly 400, respectively. The side support rod 600 is rotatably connected to the upper handlebar assembly 400 and the rear foot assembly 300, respectively, and the side support rod 600 is rotatably connected to the front foot assembly 200 through a first connector 60. The upper handlebar assembly 400, the lower handlebar assembly 500, the side support rod 600, and the rear foot assembly 300 form a four-bar linkage mechanism.

[0070] Furthermore, the stroller frame is also equipped with a seat assembly 700 and an armrest assembly 100 as described in Embodiment 1. Both the seat assembly 700 and the armrest assembly 100 are movably mounted on the frame and can be folded up and unfolded as the frame is unfolded.

[0071] When the frame is in the unfolded state, the lower handlebar assembly 500, side support rod 600, and rear leg assembly 300 form a triangular structure, while the rear leg assembly 300, front leg assembly 200, first connector 60, and side support rod 600 form another triangular structure. At this time, the lower ends of the first connector 60 and the side support rod 600 are collinear. When the frame is unfolded, the two triangular structures formed on the frame (such as...) Figure 8 As shown, this effectively ensures the structural strength of the frame, and the two triangular structures formed are nearly symmetrical.

[0072] Specifically, a locking gear 451 is movably provided between the upper handlebar assembly 400 and the lower handlebar assembly 500, and the locking gear 451 can lock the upper handlebar assembly 400 onto the lower handlebar assembly 500. When the stroller is unfolded and in use, the locking gear 451 locks the upper handlebar assembly 400 onto the lower handlebar assembly 500, ensuring that the upper handlebar assembly 400 is fixed and will not rotate, making it convenient for the user to push the stroller.

[0073] The upper handlebar assembly 400 (specifically at its joint) is provided with a drive turntable 452 that moves against it. The drive turntable 452 can drive the locking gear 451 to move towards the lower handlebar assembly 500, thereby unlocking the upper handlebar assembly 400. By pushing the locking gear 451 with the drive turntable 452, the locking gear 451 is disengaged from the upper handlebar assembly 400 and the lower handlebar assembly 500, thus unlocking the upper handlebar assembly 400.

[0074] The upper handlebar assembly 400 is provided with an unlocking handle 40. The unlocking handle 40 is connected to the drive turntable 452 by a pull cable 454. One end of the pull cable 454 is connected to the unlocking handle 40, and the other end of the pull cable 454 is connected to the drive turntable 452. The unlocking handle 40 drives the drive turntable 452 through the pull cable 454. The drive turntable 452 rotates and pushes the locking gear 451 through its inclined wall, causing the locking gear 451 to move axially and disengage from the upper handlebar assembly 400 and the lower handlebar assembly 500, thus unlocking it.

[0075] A spring 453 is provided between the locking gear 451 and the lower handlebar assembly 500. One end of the spring 453 abuts against the locking gear 451, and the other end abuts against the lower handlebar assembly 500. The elastic force of the spring 453 causes the locking gear 451 to tend to move in its locking direction. That is, during the unfolding and use of the stroller, the spring 453 can ensure that the locking gear 451 remains in the locked state, ensuring reliable unfolding. In use, after pressing the unlocking handle 40 to unlock the locking gear 451, the upper handlebar assembly 400 can fold towards the lower handlebar assembly 500, and drive the armrest assembly 100, the seat assembly 700, and the front leg assembly 200 to rotate and fold. Since this type of frame folding is a common structure in the existing stroller industry, it will not be described in detail here.

[0076] In this design, the armrest assembly 100's structural design facilitates children's entry and exit, with a small opening range and high safety performance. The stroller frame is compact when folded, taking up little space and is easy to package and transport.

Claims

1. A handlebar assembly for a stroller, disposed on the frame of the stroller, characterized in that, include: A first handrail support and a second handrail support are provided, wherein the first handrail support is provided on one side of the vehicle frame and the second handrail support is provided on the other side of the vehicle frame; A first handrail component and a second handrail component, one end of the first handrail component is rotatably connected to the first handrail support, and the other end of the first handrail component is provided with a first connecting structure; One end of the second handrail component is rotatably connected to the second handrail support, and the other end of the second handrail component is provided with a second connecting structure. The first connecting structure and the second connecting structure are detachably connected. When a child gets in or out of the stroller, the first connecting structure and the second connecting structure can be detached, and the first armrest and the second armrest can be rotated from the middle to both sides respectively.

2. The armrest assembly of the stroller according to claim 1, characterized in that, One of the first connection structure and the second connection structure is configured as a snap fastener, and the other is configured as a slot.

3. The armrest assembly of the stroller according to claim 2, characterized in that, The buckle includes an elastic arm and a locking block. The locking block is disposed on the elastic arm and has an inclined surface. The locking block can be loosely engaged with the locking slot. During the process of the card block engaging with the card slot, the inclined surface is pressed against, causing the elastic arm to deform.

4. The armrest assembly of the stroller according to claim 3, characterized in that, The end of the elastic arm is provided with a pressing part; When the card block is engaged in the card slot, pressing the pressing part can drive the card block to disengage from the card slot.

5. The armrest assembly of the stroller according to claim 1, characterized in that, The first handrail support and the second handrail support are symmetrically arranged on both sides of the vehicle frame, and the first handrail component and the second handrail component are symmetrically arranged on both sides of the vehicle frame; When the first connecting structure and the second connecting structure are detached, the first handrail piece and the second handrail piece are turned outwards respectively, forming an opening on the front side of the handrail assembly that allows a child to enter and exit.

6. The armrest assembly of the stroller according to claim 2, characterized in that, A connecting tube is provided at one end of the first handrail member near the second handrail member and at one end of the second handrail member near the first handrail member. The buckle is provided on one of the connecting tubes and the slot is provided on the other connecting tube. After the two connecting pipes are inserted into each other, the buckle is engaged with the slot.

7. The armrest assembly of the stroller according to claim 1, characterized in that, The frame is provided with a guide sleeve on each side. The first handrail is supported and slidably engaged with one of the guide sleeves. The second handrail is supported and slidably engaged with the other guide sleeve.

8. The armrest assembly of the stroller according to claim 1, characterized in that, The end of the first handrail support away from the first handrail member and the end of the second handrail support away from the second handrail member are both rotatably connected to the frame, so that the handrail assembly can rotate up and down relative to the frame.

9. A stroller frame having a folded state and an unfolded state, and being switchable between the two states, characterized in that, include: A front leg assembly and a rear leg assembly, wherein the front leg assembly and the rear leg assembly are rotatably connected; The device comprises an upper handlebar assembly, a lower handlebar assembly, and a side support rod. The two ends of the lower handlebar assembly are rotatably connected to the rear foot assembly and the upper handlebar assembly, respectively. The side support rod is rotatably connected to the upper handlebar assembly and the rear foot assembly, and is rotatably connected to the front foot assembly via a first connector. The upper handlebar assembly, lower handlebar assembly, side support rod, and rear foot assembly form a four-bar linkage. The frame is also equipped with a seat assembly and an armrest assembly as described in any one of claims 1-8. The seat assembly and the armrest assembly are movably disposed on the frame and can be folded up and unfolded as the frame is unfolded.

10. The frame of the stroller according to claim 9, characterized in that, When the frame is in the unfolded state, the lower handlebar assembly, side support rod, and rear leg assembly form a triangular structure, and the rear leg assembly, front leg assembly, first connector, and side support rod form another triangular structure. A locking gear is provided between the upper handlebar assembly and the lower handlebar assembly, and the locking gear can lock the upper handlebar assembly onto the lower handlebar assembly; The upper handlebar assembly is provided with a drive turntable that moves against it. The drive turntable can drive the locking gear to move towards the lower handlebar assembly to unlock the upper handlebar assembly. The upper handle assembly is equipped with an unlocking grip, which is connected to the drive turntable via a pull cable. The unlocking grip drives the drive turntable via the pull cable. A spring is provided between the locking gear and the lower handle assembly. One end of the spring abuts against the locking gear, and the other end of the spring abuts against the lower handle assembly. The spring force causes the locking gear to tend to move in its locking direction. After the locking gear is unlocked by pressing the unlocking lever, the upper handlebar assembly can be folded towards the lower handlebar assembly, which in turn causes the armrest assembly, the seat assembly, and the front foot assembly to fold.