Stroller

Abstract

The child stroller comprises a stroller frame and a sitting assembly, the stroller frame comprises a front foot assembly, a rear foot assembly and a push handle assembly, the front foot assembly is rotationally connected with the rear foot assembly, the push handle assembly is rotationally connected with the rear foot assembly, and the sitting assembly comprises a seat and a backrest rotationally connected with the rear end of the seat; the seat comprises a seat supporting frame, the seat supporting frame comprises a front portion and a rear portion which are hinged, the rear portion is hinged to the front foot assembly, a first linkage part is arranged between the front portion and the front foot assembly, a limiting part is arranged between the front portion and the rear portion, and during folding, the limiting part limits relative rotation of the front portion and the rear portion, so that the front portion can drive the rear portion to rotate; compared with the prior art, after the backrest is lifted, the distance between the backrest and the ground is farther, and the backrest is allowed to be further lengthened.

Description

TECHNICAL FIELD

[0001] The present application relates to an outdoor product, in particular to a child stroller. BACKGROUND

[0002] The existing foldable child stroller, for example, the patent document with the publication number CN221794732U discloses a baby stroller, which comprises a folding mechanism, a backrest, coaxially hinged front and rear supports, and a push handle assembly. The folding mechanism comprises a front seat plate and a rear seat plate hinged to each other, and a seat plate support. The front seat plate, the rear seat plate, the front support, and the seat plate support form a four-bar linkage structure. The backrest is rotationally connected to the rear seat plate. The push handle assembly is connected to the folding mechanism. The locking member is connected to the folding mechanism. The rear support is connected to the folding mechanism. In the unfolded state, the upper surfaces of the front seat plate and the rear seat plate are coplanar, making the upper surface flat for children to sit on. In the folded state, the push handle assembly is folded back and brought together with the rear support. The front support is rotated back and brought together with the rear support. The four-bar linkage mechanism is folded and driven by the backrest, so that the front seat plate and the rear seat plate are folded. Finally, the front seat plate and the rear seat plate are completely inclined. On the one hand, the backrest is too close to the ground. In order to avoid the backrest from being close to the ground, the length of the backrest needs to be shortened accordingly. On the other hand, the shape of the folded stroller presents a triangular profile, which is not simple in appearance. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a child stroller, which can extend the length of the backrest.

[0004] The child stroller has an unfolded state and a folded state. The child stroller comprises a frame with wheels at the bottom and a seating assembly arranged on the frame. The frame comprises a front leg assembly, a rear leg assembly, and a push handle assembly. The front leg assembly and the rear leg assembly are rotationally connected. The push handle assembly and the rear leg assembly are rotationally connected. The seating assembly comprises a seat and a backrest rotationally connected to the rear end of the seat. In the folded state, the front leg assembly, the push handle assembly, and the backrest are rotated towards the rear leg assembly.

[0005] The seat comprises a seat support frame, which comprises a front part and a rear part hinged to each other and coplanar in the unfolded state. The rear part is hinged to the front leg assembly. A first linkage member is provided between the front part and the front leg assembly. A limiting member is provided between the front part and the rear part to limit the relative rotation of the front part and the rear part during folding, so that the front part can rotate with the rear part.

[0006] The following also provides several optional modes, but not as an additional limitation to the above overall scheme, just a further supplement or preferred, without technical or logical contradiction, each optional mode can be combined with the above overall scheme, and can also be combined between multiple optional modes.

[0007] Optionally, the seat comprises a seat cushion covering the upper surface of the seat support frame, and the seat cushion constitutes the limiting member.

[0008] Optionally, the backrest comprises a backrest support frame and a back cushion covering the upper surface of the backrest support frame, and the seat cushion and the back cushion are connected.

[0009] Optionally, a flexible barrier is arranged between the back cushion and the handlebar assembly, and the seat cushion, the back cushion and the flexible barrier jointly form a seat space with an open front side.

[0010] Optionally, in the folded state, the rear portion is arranged perpendicularly to the rear leg assembly.

[0011] Optionally, in the folded state, the rear leg assembly is in a substantially upright state, and the bottom of the backrest is suspended.

[0012] Optionally, a limiting mechanism is arranged between the front portion and the rear portion to limit the rotation of the front portion and the rear portion in one direction and keep them in the same plane, and the frame is provided with a limiting portion cooperating with the rear portion to limit the overall backward overturning of the seat support frame.

[0013] Optionally, the hinge center between the front leg assembly and the rear leg assembly coincides with the hinge center between the front leg assembly and the rear portion.

[0014] Optionally, a front armrest rod is arranged to be hingedly connected to the handlebar assembly at both ends, and the front armrest rod is connected with the rear leg assembly, and in the folded state, the front armrest rod is in an upright state.

[0015] Optionally, the handlebar assembly is rotatably connected to the rear leg assembly, and in the folded state, the handlebar assembly is rotated towards the rear leg assembly.

[0016] Optionally, the front leg assembly comprises a pair of front leg rods arranged in pairs, the rear leg assembly comprises a pair of rear leg rods arranged in pairs, the handlebar assembly comprises a pair of push rods arranged in pairs, the top of the front leg rod is provided with a front leg joint, the top of the rear leg rod is provided with a rear leg joint, and the bottom of the push rod is provided with a push rod joint, the front leg joint is rotatably connected to the rear leg joint, and the push rod joint is rotatably connected to the rear leg joint; the rod members on the same side are connected through the corresponding joints to form a side frame, the seat assembly is arranged between the two side frames, and a flexible barrier is arranged between the backrest and the handlebar assembly.

[0017] Optionally, a flexible barrier is arranged between the backrest and the handlebar assembly.

[0018] The stroller of the present application, in the folded state, the rear side of the rear portion moves upward to pull the backrest, and the pulled backrest is farther away from the ground, allowing the length of the backrest to be adaptively extended. Attached Figure Description

[0019] Figure 1 This is a structural view of the stroller frame in the unfolded state according to an embodiment of this application;

[0020] Figure 2 for Figure 1 A structural view of the push rod of a children's stroller after it has been folded in half;

[0021] Figure 3 for Figure 1 A structural view of the frame of a children's stroller in its folded state;

[0022] Figure 4 This is a structural view of a stroller in its unfolded state according to an embodiment of this application;

[0023] Figure 5 for Figure 1 Enlarged view of the joints of the front leg assembly, rear leg assembly, and push handle assembly of a children's stroller, with the rear leg joint shell removed;

[0024] Figure 6 for Figure 5 Exploded view of the front foot assembly, rear foot assembly, and push handle assembly;

[0025] Figure 7 for Figure 2 A cross-sectional view of a children's stroller along its plane of symmetry;

[0026] Figure 8 for Figure 7 A cross-sectional view of a children's stroller in its folded state;

[0027] Figure 9 for Figure 8 The sectional view of the second section after rotation and folding.

[0028] The attached diagram is described below:

[0029] 10. Frame;

[0030] 100. Side frame; 110. Front leg assembly; 111. Front wheel; 112. Front leg bar; 113. Front leg joint; 114. First connecting part; 115. Second connecting part;

[0031] 120. Rear foot assembly; 121. Rear wheel; 122. Rear foot post; 123. Rear foot joint; 124. Locking mechanism;

[0032] 130. Push handle assembly; 132. Push rod; 133. Push rod joint; 140. First linkage; 150. Second linkage; 160. Limiting part; 171. First lateral connecting member; 172. Second lateral connecting member; 180. Front armrest bar;

[0033] 200, ride assembly, 210, seat; 220, seat support frame; 221, front portion; 222, rear portion; 230, backrest; 231, backrest support frame; 240, legrest support frame;

[0034] 310, seat cushion; 320, back cushion; 330, flexible barrier; 340, leg cushion. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0036] It should be noted that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be intervening elements. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or there can be intervening elements.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the terms "and / or" includes any and all combinations of one or more of the associated listed items.

[0038] In the present application, the terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, order of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically defined.

[0039] Reference Figures 1 to 3 A foldable stroller having an unfolded state and a folded state, comprising a bottom frame 10 with wheels and a ride assembly 200 arranged on the frame 10 for a child to ride. For the convenience of description, it is defined that the stroller has a front end 100, a rear end 200, a left side 300 and a right side 400. Figure 1 The X, Y, Z directions shown correspond to the length, width and height directions respectively.

[0040] The frame 10 includes a front leg assembly 110 and a rear leg assembly 120 rotatably connected, and the front leg assembly 110 and the rear leg assembly 120 are rotatable relative to each other about a horizontal first axis; in some embodiments, the frame 10 also includes a push handle assembly 130 rotatably connected to the rear leg assembly, and the push handle assembly 130 and the rear leg assembly 120 are rotatable relative to each other about a horizontal second axis; in some embodiments, the first axis and the second axis are not collinear, and in some embodiments, the first axis and the second axis are collinear.

[0041] like Figure 1 As shown, in some embodiments, the top of the front foot assembly 110 and the bottom of the push handle assembly 130 are hinged to the top of the rear foot assembly 120. The bottom of the front foot assembly 110 is provided with a front wheel 111 that can rotate omnidirectionally, the bottom of the rear foot assembly 120 is provided with a rear wheel 121 for directional walking, and the top of the push handle assembly 130 is provided with a handle.

[0042] To enable the push handle assembly and the front foot assembly to fold and retract in tandem, a linkage mechanism is provided between the push handle assembly 130 and the front foot assembly 110. In some embodiments, such as Figure 5 and Figure 6 As shown, the linkage mechanism includes a second linkage 150 disposed between the bottom of the push handle assembly 130 and the top of the front foot assembly 110. The two ends of the second linkage 150 are hinged to the push handle assembly 130 and the front foot assembly 110. When the push handle assembly 130 rotates and moves closer to the rear foot assembly 120, the linkage 150 can drive the front foot assembly 110 to rotate and move closer to the rear foot assembly.

[0043] like Figure 1 and Figure 2 As shown, in the unfolded state, the front leg assembly 110 is arranged at an upward angle from the bottom to the front and back, and the rear leg assembly 120 is arranged at a downward angle from the top to the front and back. In the folded state, the front leg assembly 10 rotates and approaches the rear leg assembly from the front side. In some embodiments, the frame 10 includes a push handle assembly 130, which is arranged at an upward angle from the bottom to the front and back. When folded, the push handle assembly 130 rotates and approaches the rear leg assembly.

[0044] The stroller includes a locking element that keeps it in an unfolded state. In some embodiments, the locking element is slidably disposed at the bottom of the push handle assembly 130. The locking element can move between an unlocked position and a locked position. The top of the rear leg assembly 120 is provided with a locking groove. When the locking element is in the locked position, its end extends into the locking groove, restricting relative rotation between the push handle assembly 130 and the rear leg assembly 120. When the locking element is in the unlocked position, its end exits the locking groove, and the push handle assembly 130 and the rear leg assembly 120 can rotate relative to each other and fold together.

[0045] The child stroller comprises an elastic member acting on the locking member, the elastic member drives the locking member to keep in the locked state, the locking member is moved from the locked position to the released position, and the elastic member is compressed; the locking member is moved from the released position to the locked position, and the elastic member is reset.

[0046] As shown in Figure 4 and 7 , the seat assembly 200 comprises a seat 210 and a backrest 220 rotatably connected to the rear end of the seat 210, and the inclination angle of the backrest 220 can be adjusted to adapt to different sitting postures.

[0047] As shown in Figure 1 , the seat 210 comprises a seat support frame 220 formed by connecting rods, and a support plate can also be arranged on the frame structure formed by the rods to improve strength and comfort.

[0048] The seat support frame 220 comprises a front part 221 and a rear part 222 hingedly connected to each other, the rear part 222 is hingedly connected to the front leg assembly 110, and a first linkage 140 is arranged between the front part 221 and the front leg assembly 110. In some embodiments, as shown in Figure 7 , the first linkage 140 is hingedly connected to the front part 221 and the front leg assembly 110 at both ends, and the front part 221, the rear part 222, the front leg assembly 110 and the first linkage 140 constitute a foldable four-bar linkage.

[0049] As shown in Figure 1 and 2 , in the unfolded state, the front part 221 and the rear part 222 of the seat support frame 220 are arranged coplanarly, and the so-called coplanar means that the upper surfaces of the two are substantially in the same plane, but not limited to the same horizontal plane.

[0050] Because the four-bar linkage is unstable, when the seat support frame 220 is subjected to an external force, the four-bar linkage will deform. In order to keep the front part 221 and the rear part 222 coplanar, a limiting mechanism is arranged between the front part 221 and the rear part 222, which limits the rotation of the front part 221 relative to the rear part 222 in the clockwise direction. In some embodiments, the front part 221 and the rear part 222 are connected by a hinge, the front part 221 has a first end surface relative to the rear part 222, and the rear part 222 has a second end surface relative to the front part 221, when the front part 221 and the rear part 222 are coplanar, the first end surface and the second end surface abut to limit the relative rotation of the front part 221 and the rear part 222.

[0051] As shown in Figure 7 , the frame 10 is provided with a limiting portion 160 cooperating with the rear part 222, and in some embodiments, the limiting portion 160 is arranged on the crossbar between the two rear leg assemblies 120, and the crossbar abuts against the rear part 222 to limit the overall rearward rotation of the seat support frame 220. The limiting mechanism and the limiting portion 160 jointly act to keep the front part 221 and the rear part 222 coplanar in the unfolded state.

[0052] A stopper is arranged between the front part 221 and the rear part 222 to limit the rotation of the front part 221 relative to the rear part 222 in the counterclockwise direction. During the folding process, after the front part 221 rotates relative to the rear part 222 by a certain angle, the stopper acts on the front part 221 and the rear part 222 to limit the relative rotation therebetween, for example, to maintain the angle a (the included angle of the top surfaces of the front part 221 and the rear part 222) as shown in Figure 8 The front part 221 can rotate together with the rear part 222, and the rear end of the rear part 222 is raised to pull the backrest 230 (as shown by the solid and dashed lines in Figure 8 ), and the backrest 230 is pulled to be farther away from the ground, which allows the backrest 230 to be further lengthened.

[0053] As shown in Figure 8 and Figure 9 , in the folded state, the rear leg assembly 120 is generally upright. In some embodiments, the bottom of the backrest 230 is suspended to avoid contamination of the backrest 230. In other embodiments, the rear part 222 is arranged generally perpendicularly to the rear leg assembly 120.

[0054] Referring to Figure 4 , the seat 210 includes a seat cushion 310 covering the upper surface of the seat support frame 220. In this embodiment, the seat cushion 310 constitutes the stopper, and the non-stretchability of the seat cushion 310 is used to limit the relative rotation between the front part 221 and the rear part 222. In some embodiments, the seat cushion 310 includes a seat cushion protection layer and a seat cushion elastic layer. The seat cushion elastic layer can be made of a material such as sponge that has elasticity, and the protection layer is made of a woven fabric having a certain thickness. The woven fabric is bendable and has a low elongation rate, so that during the folding of the stroller, the seat cushion 310 is tightened by itself to exert a force on the front part 221 and the rear part 222 to play a limiting role.

[0055] In some embodiments, the backrest 230 includes a backrest support frame 231 (shown by the dashed line in the figure) and a back cushion 320 covering the upper surface of the backrest support frame 231. The back cushion 320 includes a back cushion protection layer and a back cushion elastic layer. The back cushion elastic layer can be made of a material such as sponge that has elasticity, and the back cushion protection layer is also made of a flexible woven fabric, which is connected to or integrally formed with the seat cushion protection layer.

[0056] To prevent the seat cushion 310 from being displaced relative to the seat support frame 220, in some embodiments, the two are fixedly connected by fasteners or binding members.

[0057] In an embodiment, the seat 210 further comprises a leg rest support frame 240 hingedly connected to the front side of the seat support frame 220, and a leg pad 340 covering the surface of the leg rest support frame 240. The leg rest support frame 240 is hingedly connected to the front portion 221, and a locking member is arranged between the leg rest support frame 240 and the front portion 221 to limit the rotation angle between the two. The leg rest support frame 240 can be substantially coplanar with the front portion 221 or at an angle with the front portion 221, for example Figure 9 As shown, the leg pad 340 comprises a leg pad protective layer and a leg pad elastic layer. The leg pad elastic layer is a sponge, and the leg pad protective layer is a flexible fabric covering the outer periphery of the leg pad elastic layer. The leg pad protective layer and the seat pad protective layer are integrally formed or connected by sewing.

[0058] In some embodiments, the front leg assembly 110 comprises a pair of front leg rods 112 arranged in pairs, and the rear leg assembly 120 comprises a pair of rear leg rods 122 arranged in pairs. The top of the front leg rod 112 is provided with a front leg joint 113, and the top of the rear leg rod 122 is provided with a rear leg joint 123. The front leg joint and the rear leg joint are hingedly connected about a first axis.

[0059] In some embodiments, the frame 10 comprises a push handle assembly 130, which comprises a pair of push rods 132 arranged in pairs. The bottom of the push rod 132 is provided with a push rod joint 133, and the push rod joint and the rear leg joint are hingedly connected about a second axis. The front leg rod 112, the rear leg rod 122, and the push rod 132 on the same side are connected by the corresponding joints to form a side frame 100, and the seating assembly is arranged between the two side frames 100.

[0060] In some embodiments, as shown, Figure 4 A flexible barrier 330 is arranged between the backrest 230 and the push handle assembly 130. The flexible barrier 330 is connected to the seat pad protective layer. The seat pad 310, the backrest pad 320, and the flexible barrier 330 form a seating space with an open front side.

[0061] In some embodiments, a first transverse connecting member 171 is connected between the two side frames 100. The first connecting member 140 is a rod member and has two ends. One end is rotatably sleeved on the outer periphery of the first transverse connecting member 171, and the other end is hingedly connected to the back of the front portion 221.

[0062] In some embodiments, the front leg joint 113 has a first connecting portion 114 extending into the rear leg joint 123, and a second connecting portion 115 located inside the rear leg joint 123. The first connecting portion 114 and the second connecting portion 115 are hingedly connected to the rear leg joint 123 by a rotating shaft.

[0063] Further, a second transverse connecting member 172 is arranged between the two second connecting portions 115, and the rear portion 222 is rotatably sleeved on the second transverse connecting member 172. In an embodiment, the axis of the second transverse connecting member 172 is coaxial with the rotation shaft axis or is not coaxial, and it can also be understood that the hinge center between the front leg assembly 110 and the rear leg assembly 120 coincides with or does not coincide with the hinge center between the front leg assembly 110 and the rear portion 222.

[0064] In some embodiments, the push rod 132 is a two-fold rod structure, and in the folded state, the push rod 132 is folded and supports the rear wheel 121 together on the ground, and the rear leg rod 122 is in an upright state, and the push rod 132 is folded and abuts against the rear leg rod 122.

[0065] A second connecting member 150 is arranged between the bottom of the push handle assembly 130 and the top of the front leg assembly 110, and in some embodiments, the second connecting member 150 is a rod arranged in the rear leg joint 123. The second connecting member 150 and the push rod joint 133 are hinged around a third axis, and the second connecting member 150 and the front leg joint 113 are hinged around a fourth axis.

[0066] In some embodiments, in the folded state, the rear portion 222 is in the space defined by the two rear leg joints 123, that is, the rear portion 222 is blocked by the rear leg joints 123 from the Y direction, and preferably, in the folded state, the top surface of the rear leg joint 123 extends substantially horizontally.

[0067] In some embodiments, the child stroller 1000 further comprises a front handrail 180 hinged to the push handle assembly 130, which provides safety protection for the seated child. Further, the front handrail 180 is connected to the rear leg assembly 120, and the connection structure is, for example Figure 7 As shown, the front handrail 180 and the rear leg assembly 120 are hinged by a two-fold rod, and in the folded state, the front handrail 180 is in an upright state and can be held by the user to transport the whole stroller.

[0068] In an embodiment, in the unfolded state, the front portion 221 protrudes forward of the frame 10, which extends the seating length and improves the seating adaptability. In the folded state, the front portion 221 protrudes forward of the front leg assembly 110, so that the whole stroller has a substantially rectangular outer contour from the Y direction (as Figure 8 As shown, the front handrail 180 protrudes from the outer contour in the folded state for the convenience of holding the whole stroller.

[0069] The folding process of the child stroller in an embodiment of the present application is as follows:

[0070] The folding push rod 132 is rotated again, and the push rod 132 is rotated to close to the rear leg assembly 120. The front leg assembly 110 is driven to rotate to close to the rear leg assembly 120 by the second connecting member 150. In this process, the backrest 230 follows the push rod 132. The front leg assembly 110 drives the front part 221 to rotate relative to the rear part 222 by the first connecting member 140, until the seat cushion 310 is taut to limit the further rotation of the front part 221. At this time, the frame 10 has not been completely folded. Continuing to fold, the front part 221 drives the rear part 222 to continue to rotate, and the rear side of the rear part 222 is raised away from the limiting part 160, thereby driving the pull backrest 230, until the folding state. The rear part 222 is stably kept in the horizontal state under the gravity of the backrest 230.

[0071] In the folding state, the child stroller has a top and a bottom with similar sizes in the width direction, and a rectangular outer contour, which is more simple and convenient for packaging. In addition, the rear part is kept horizontal to lift the backrest. Compared with the prior art, the backrest is farther from the ground, thereby allowing it to be further lengthened.

[0072] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present disclosure. When the technical features in different embodiments are embodied in the same figure, it is considered that the figure also discloses the combination of the embodiments involved.

[0073] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A child stroller having an unfolded state and a folded state, the stroller comprising a bottomed frame with wheels and a seating assembly arranged on the frame, the frame comprising a front leg assembly, a rear leg assembly and a handlebar assembly, the front leg assembly and the rear leg assembly being pivotally connected, the handlebar assembly and the rear leg assembly being pivotally connected, the seating assembly comprising a seat and a backrest pivotally connected to a rear end of the seat, in the folded state, the front leg assembly, the handlebar assembly and the backrest are pivoted towards the rear leg assembly; characterized in that the seat comprises a seat support frame comprising a front portion and a rear portion being hingedly connected and kept coplanar in the unfolded state, the rear portion being hingedly connected to the front leg assembly, a first linkage being provided between the front portion and the front leg assembly; a limiting member being provided between the front portion and the rear portion to limit relative pivoting of the front portion and the rear portion during folding so that the front portion can be pivoted with the rear portion.

2. The stroller of claim 1, wherein, the seat comprises a seat cushion covering an upper surface of the seat support frame, the seat cushion constituting the limiting member.

3. The stroller of claim 2, wherein, the backrest comprises a backrest support frame and a backrest cushion covering an upper surface of the backrest support frame, the seat cushion and the backrest cushion being connected.

4. The stroller of claim 3, wherein, a flexible barrier is provided between the backrest cushion and the handlebar assembly, the seat cushion, the backrest cushion and the flexible barrier jointly forming a seating space with an open front side.

5. The stroller of claim 1, wherein, in the folded state, the rear portion is arranged perpendicularly to the rear leg assembly.

6. The stroller of claim 1, wherein, in the folded state, the rear leg assembly is in a substantially upright state, a bottom of the backrest is suspended.

7. The stroller of claim 1, wherein, a limiting mechanism is provided between the front portion and the rear portion to limit one-way pivoting of the two portions and keep the two portions coplanar, the frame is provided with a limiting portion cooperating with the rear portion to limit the seat support frame as a whole from being flipped rearward.

8. The stroller of claim 1, wherein, a center of hinging between the front leg assembly and the rear leg assembly coincides with a center of hinging between the front leg assembly and the rear portion.

9. The stroller of claim 1, wherein, a front armrest bar is provided, the two ends of the front armrest bar being hingedly connected to the handlebar assembly, the front armrest bar being linked with the rear leg assembly, in the folded state, the front armrest bar is in an upright state.

10. The stroller of claim 1, wherein, the front leg assembly comprises a pair of front leg bars, the rear leg assembly comprises a pair of rear leg bars, the handlebar assembly comprises a pair of handlebars, a front leg joint is provided at a top of the front leg bar, a rear leg joint is provided at a top of the rear leg bar, a handlebar joint is provided at a bottom of the handlebar, the front leg joint is pivotally connected to the rear leg joint, the handlebar joint is pivotally connected to the rear leg joint; the bar members on the same side are connected through the corresponding joints to form a side frame, the seating assembly is arranged between the two side frames.

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