Folding cart with rapid folding linkage mechanism

Abstract

The utility model discloses a folding cart with a quick folding linkage mechanism, which comprises a folding bottom frame, first side frames, a second side frame, inclined rods and a linkage mechanism, the first side frame comprises two bearing vertical rods, the folding bottom frame is hinged with the two first side frames, the second side frame comprises a first folding rod group and a second folding rod group, and the first folding rod group is hinged with the second folding rod group. The linkage mechanism comprises a linkage component and a linkage arm, one end of the linkage component is hinged to the first side frame, and the other end of the linkage component is detachably connected to the inclined rod in a lap joint mode. A polygonal linkage structure used for linkage folding or unfolding of the first side frame and the second side frame is formed among the linkage component, the linkage arm, the inclined rod and the first side frame or among the linkage component, the linkage arm, the inclined rod, the folding bottom frame and the first side frame. In the using process of the folding cart, the first side frame and the second side frame can be further driven to be folded or unfolded in a linkage mode through the linkage mechanism, rapid folding and unfolding of the whole folding cart are facilitated, and the folding cart is simple in structure and more convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of folding trolley, especially to a folding trolley with quick folding linkage mechanism. BACKGROUND

[0002] The trolley is a tool for carrying goods, with the development of economy, people's demand for the multifunctional trolley is higher and higher, the folding structure frame currently sold in the market has single function, small storage space, limited number of carrying objects, and the length of the carrying objects is also limited, which cannot meet the requirements of modern travel and outdoor activities well.

[0003] In view of the above problems, the utility model discloses a camping folding trolley, including front and rear side frames or left and right cross side frames, the left and right cross side frames include cross support pipes and auxiliary fixing pipes hinged between the upper end of the cross support pipes and the front and rear side frames, in the folding or unfolding process, the left and right cross side frames are only hinged between the auxiliary fixing pipes and the lower end of the cross support pipes and the front and rear side frames to link, the middle region of the cross support pipes is not linked between the front side frame or the rear side frame, which leads to poor linkage effect between the left and right cross side frames and the front and rear side frames, easy to jam, and inconvenient to travel. SUMMARY

[0004] The utility model discloses in view of the deficiency in the prior art, provide a kind of folding trolley with quick folding linkage mechanism, in the use process, it can further be driven by linkage mechanism to link between first side frame and second side frame and fold or unfold, it is favorable to the quick folding and unfolding of folding trolley whole, and simple structure, use more conveniently.

[0005] The utility model provides a kind of folding trolley with quick folding linkage mechanism, including folding bottom frame, two first side frames that two first side frames are respectively arranged in the length direction of folding bottom frame, two second side frames that two second side frames are respectively arranged in the width direction of folding bottom frame and linkage mechanism, the first side frame includes two load vertical rods oppositely arranged, the both ends of the folding bottom frame are respectively hinged with two first side frames, the second side frame includes first folding rod group and second folding rod group that are hinged with each other, and the oblique rod with one end being connected with first folding rod group or second folding rod group, the other end being hinged with the lower part of corresponding first side frame or folding bottom frame, linkage mechanism includes linkage member arranged above the oblique rod and linkage arm with both ends being hinged with linkage member and oblique rod, the linkage member is arranged along transverse, and one end is hinged with first side frame, the other end is detachably lapped on oblique rod, the linkage member, linkage arm, oblique rod and first side frame form polygonal linkage structure for linkage first, second side frame folding or unfolding, or the linkage member, linkage arm, oblique rod, folding bottom frame and first side frame form polygonal linkage structure for linkage first, second side frame folding or unfolding.

[0006] Preferably, the linkage member is detachably clamped on the diagonal rod by a clamping piece, the clamping piece comprising a clamping seat connected on the linkage member, and a clamping portion connected on the clamping seat, and a clamping groove is recessed from the bottom surface of the clamping portion to match the diagonal rod.

[0007] Preferably, the clamping groove is arranged in a fan-shaped structure along the first axis, for the diagonal rod to rotate around the first axis to match the clamping groove during the folding or unfolding of the first and second side frames, and the clamping seat is sleeved on the linkage member and connected with the linkage member by a fastener.

[0008] Preferably, the clamping piece further comprises a support portion protruding from the inner side or the outer side of the clamping portion, and a limiting concave surface for positioning the rod is recessed on the side of the support portion.

[0009] Preferably, the first folding rod group comprises at least one first cross rod, the second folding rod group comprises at least one second cross rod arranged to cross the first cross rod and hinged with each other, the first cross rod is arranged on the inner side of the second cross rod, and the diagonal rod is integrally formed with the lower part of the first cross rod or the second cross rod.

[0010] Preferably, the first folding rod group further comprises a first connecting rod hinged with the upper end of the first cross rod, the second folding rod group further comprises a second connecting rod hinged with the upper end of the second cross rod, and the linkage member is arranged below the first connecting rod or the second connecting rod.

[0011] One end of the upper side of the second side frame is hinged to one of the first side frames by the first connecting rod, and the other end of the upper side of the second side frame is hinged to the other of the first side frames by the second connecting rod.

[0012] One end of the lower side of the second side frame is hinged to one of the first side frames by the lower end of the first cross rod, or is hinged to the folding base frame, and the other end of the lower side of the second side frame is hinged to the other of the first side frames by the lower end of the second cross rod, or is hinged to the folding base frame.

[0013] Preferably, the linkage member is arranged between the two second side frames and is hinged to the first side frame by a first hinge shaft, and a turnover area is formed between the two second side frames for the linkage member to be folded upward around the axis of the first hinge shaft.

[0014] The first connecting rod or the second connecting rod is provided with a second connecting shaft, one end of the linkage arm is hinged to the linkage member, the other end is hinged to the first connecting shaft before the linkage member is folded over, and forms the polygon linkage structure among the linkage member, the inclined rod and the first side frame, or forms the polygon linkage structure among the linkage member, the inclined rod, the folding base and the first side frame, and is positioned and connected to the second connecting shaft after the linkage member is folded over, and forms a triangular support structure with the linkage member and the first connecting rod or the second connecting rod.

[0015] Preferably, one end of the linkage arm is hinged to the linkage member through a third connecting shaft, and the other end is detachably connected to the first connecting shaft and the second connecting shaft through a hooking part, and the hooking part is rotatable relative to the first connecting shaft.

[0016] Preferably, the linkage member is provided with a third connecting shaft; one end of the linkage arm is detachably connected to the first connecting shaft and the second connecting shaft through a first dismounting part, and the first dismounting part is rotatable relative to the first connecting shaft, and the other end is detachably connected to the third connecting shaft through a second dismounting part, and the second dismounting part is rotatable relative to the third connecting shaft.

[0017] Preferably, the linkage member comprises two oppositely arranged linkage rods and a support rod connected between the two linkage rods, two sides of the linkage member are respectively hinged to the first side frame through the two linkage rods, the two linkage rods are respectively overlapped on the inclined rods of the two second side frames, the upper sides of the linkage rods and the support rod form a support surface for carrying a user, and a seating area is formed between the two second side frames and arranged along the upper sides of the linkage member and the folding base.

[0018] The folding cart provided by the utility model is provided with a linkage mechanism, and the linkage mechanism comprises a linkage member arranged above the inclined rod, linkage arms hinged to the linkage member and the inclined rod at two ends, the linkage member is arranged in a transverse direction, one end of the linkage member is hinged to the first side frame, and the other end of the linkage member is detachably overlapped on the inclined rod, a polygonal linkage structure for linkage folding or unfolding of the first side frame and the second side frame is formed between the linkage member, the linkage arms, the inclined rod and the first side frame, or a polygonal linkage structure for linkage folding or unfolding of the first side frame and the second side frame is formed between the linkage member, the linkage arms, the inclined rod, the folding base frame and the first side frame, when the folding base frame is lifted to drive the first side frame and the second side frame to be folded, the first side frame and the second side frame can be further linkage folded by the linkage member and the linkage arms being hinged to each other and being turned upward to deform, on the basis of being linkage folded by the first folding rod set, the second folding rod set and the inclined rod between the first side frame and the second side frame, when the two first side frames are pulled to drive the first side frame and the second side frame to be unfolded, the first side frame and the second side frame can be further linkage unfolded by the linkage member and the linkage arms being hinged to each other and being turned downward to deform, on the basis of being linkage unfolded by the first folding rod set, the second folding rod set and the inclined rod between the first side frame and the second side frame, so that the folding cart of the utility model can further drive the first side frame and the second side frame to be linkage folded or unfolded by the linkage mechanism in the use process, the folding cart is more favorable to rapid folding and unfolding of the whole folding cart, the structure is simple, use is more convenient, in addition, the polygonal linkage structure can be used to support deformation of the whole folding cart, the structure of the whole folding cart is more stable, and practicality is high.

[0019] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the utility model, constitute a part of the present application, the schematic embodiment of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation to the utility model.In the drawings,

[0021] Figure 1 It is the structure schematic view of the folding cart of the utility model first embodiment.

[0022] Figure 2 It is the explosion view of the folding cart of the utility model first embodiment.

[0023] Figure 3 It is the structure schematic view of the folding cart of the utility model first embodiment in single layer mode.

[0024] Figure 4The structure diagram of the half-folded state of the folding cart of the first embodiment of the utility model.

[0025] Figure 5 The structure diagram of the linkage mechanism of the first embodiment of the utility model.

[0026] Figure 6 The structure diagram of the lap joint of the first embodiment of the utility model.

[0027] Figure 7 The structure diagram of the folding cart of the second embodiment of the utility model.

[0028] Figure 8 The structure diagram of the folding cart of the second embodiment of the utility model in the single-layer mode.

[0029] Figure 9 The exploded view of the linkage mechanism of the second embodiment of the utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0031] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In the utility model, unless another definite provision and limit, first feature is "on" or "under" second feature can include that first and second features are direct contact, also can include that first and second features are not direct contact, but contact through other feature between them. Moreover, first feature "on", "above" and "on" second feature include that first feature is directly above and obliquely above second feature, or just indicate that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under" second feature include that first feature is directly below and obliquely below second feature, or just indicate that horizontal height of first feature is less than second feature.

[0034] Unless otherwise defined, technical terms or scientific terms used herein should be understood as having the common meaning in the field of the utility model. The "first", "second" and similar words used in the utility model patent application specification and claims do not represent any order, quantity or importance, but are used to distinguish different components. Similarly, "one" or "a" and similar words do not represent quantity limitation, but represent the existence of at least one.

[0035] As Figures 1-6As shown, as the first embodiment of the utility model provides a kind of folding stroller with quick folding linkage mechanism, including folding chassis 1, two first side frames 2 being respectively arranged in the length direction in the both sides of folding chassis 1, two second side frames 3 being respectively arranged in the width direction in the both sides of folding chassis 1, and linkage mechanism 4.Wherein, first side frame 2 includes two load vertical rods 21 being oppositely arranged, the both ends of folding chassis 1 are respectively hinged with two first side frames 2, second side frame 3 includes first folding rod group 31 and second folding rod group 32 being hingedly connected with each other, and the one end of oblique rod 33 being hingedly connected with first folding rod group 31 or second folding rod group 32, the other end is hingedly connected with the lower part of corresponding first side frame 2.Linkage mechanism 4 includes linkage member 41 being arranged above oblique rod 33, and linkage arm 42 being hingedly connected with linkage member 41 and oblique rod 33 at both ends, linkage member 41 is arranged along transverse direction, and one end is hingedly connected with first side frame 2, the other end is detachably overlapped on oblique rod 33, linkage member 41, linkage arm 42, oblique rod 33 and first side frame 2 form polygon linkage structure for linkage first, second side frame folding or unfolding, when folding chassis 1 is lifted to drive first side frame 2 and second side frame 3 to fold, it can be folded by first, second folding rod group and oblique rod 33 between first side frame 2 and second side frame 3 on the basis of linkage folding, further by the mutual hingedly connected linkage member 41 and linkage arm 42 are turned upside down and are driven to fold first side frame 2 and second side frame 3 by linkage;When pulling two first side frames 2 away from each other to drive first side frame 2 and second side frame 3 to unfold, it can be unfolded by first, second folding rod group and oblique rod 33 between first side frame 2 and second side frame 3 on the basis of linkage, further by the mutual hingedly connected linkage member 41 and linkage arm 42 are turned upside down and are driven to unfold first side frame 2 and second side frame 3 by linkage, so that the folding stroller of the embodiment can be further driven by linkage mechanism 4 to fold or unfold first side frame 2 and second side frame 3 between, more conducive to the quick folding and unfolding of folding stroller as a whole, and simple structure, more convenient to use.In addition, the deformation of folding stroller as a whole can also be supported by the polygon linkage structure, so that the structure of folding stroller as a whole is more stable, and the practicality is strong.In other embodiments, the other end of the oblique rod 33 can also be arranged to be hingedly connected with the corresponding arrangement on the folding chassis 1, so as to form polygon linkage structure for linkage first, second side frame folding or unfolding between linkage member 41, linkage arm 42, oblique rod 33, folding chassis 1 and first side frame 2, also can fold or unfold first side frame 2 and second side frame 3 by linkage, and support the deformation of folding stroller as a whole by the polygon linkage structure.In addition, in the embodiment, the linkage mechanism 4 is arranged between one of the first side frames 2 and the two second side frames 3, and the linkage mechanism 4 on one side links the first side frame 2 and the second side frame 3 to be folded or unfolded, and supports the deformation of the whole folding stroller. In other embodiments, the linkage mechanism 4 can also be arranged between the other first side frame 2 and the two second side frames 3, forming a double linkage mechanism, so that the linkage mechanism 4 on both sides links the first side frame 2 and the second side frame 3 to be folded or unfolded, and supports the deformation of the whole folding stroller, thereby facilitating the rapid folding and unfolding of the stroller, and further improving the stability of the polygonal linkage structure supporting the deformation of the whole folding stroller.

[0036] As shown in Figure 5 and Figure 6 , the linkage member 41 is detachably lapped on the diagonal rod 33 through the lapping piece 5, the lapping piece 5 includes a lapping seat 51 and a lapping part 52 connected to the lapping seat 51, the lapping seat 51 is connected to the linkage member 41, and the lapping part 52 is recessed with a lapping groove 53 matched with the diagonal rod 33 from the bottom surface thereof, the lapping groove 53 and the arc of the diagonal rod 33 are matched to fix the linkage member 41 and the diagonal rod 33, and the turning path of the linkage member 41 is not limited on the basis of the left and right swinging of the linkage member 41.

[0037] As shown in Figure 6 , the lapping groove 53 is provided in a fan-shaped structure arranged along the first axis, for the diagonal rod 33 to rotate around the first axis by fitting the lapping groove 53 during the folding or unfolding of the first and second side frames, facilitating the rotation of the linkage member 41 and preventing jamming, the lapping seat 51 is sleeved on the linkage member 41 and connected to the linkage member 41 through a fastener.

[0038] As shown in Figure 6 , the lapping piece 5 further includes a support part 54 protruding from the inner side or the outer side of the lapping part 52, the side part of the support part 54 is recessed with a limiting concave surface 55 for positioning the rod, and the connection between the linkage members 41 is positioned by the limiting concave surface 55.

[0039] As shown in Figure 2 and Figure 3 , the first folding rod group 31 includes at least one first cross rod 311, the second folding rod group 32 includes at least one second cross rod 321 arranged in mutual cross and hinged with the first cross rod 311, the first cross rod 311 is arranged on the inner side of the second cross rod 321, the diagonal rod 33 is integrally formed with the lower part of the first cross rod 311 or the second cross rod 321, and the structure is simple and not easy to be damaged.

[0040] As shown in Figure 2 and Figure 5As shown, the first folding rod set 31 further comprises a first connecting rod 312 hinged to the upper end of the first cross rod 311, the second folding rod set 32 further comprises a second connecting rod 322 hinged to the upper end of the second cross rod 321, the linkage member 41 is arranged below the first connecting rod 312 or the second connecting rod 322, one end of the upper side of the second side frame 3 is hinged to one of the first side frames 2 through the first connecting rod 312, the other end of the upper side of the second side frame 3 is hinged to the other of the first side frames 2 through the second connecting rod 322, one end of the lower side of the second side frame 3 is hinged to one of the first side frames 2 through the lower end of the first cross rod 311 or to the folding base frame 1, the other end of the lower side of the second side frame 3 is hinged to the other of the first side frames 2 through the lower end of the second cross rod 321 or to the folding base frame 1, forming a complete cross folding structure, through the folding of the two cross rods, the first and second connecting rods connected to the side of the cross rods are folded upward, so that the entire frame achieves the folding effect.

[0041] As shown in Figure 3 and Figure 5 , the linkage member 41 is arranged between the two second side frames 3 and is hinged to the first side frame 2 through the first hinge shaft 22, a turnover area for the linkage member 41 to turn over and fold upward around the axis of the first hinge shaft 22 is formed between the two second side frames 3, the diagonal rod 33 is provided with a first connecting shaft 331, the first connecting rod 312 or the second connecting rod 322 is provided with a second connecting shaft 323, one end of the linkage arm 42 is hinged to the linkage member 41, the other end can be hinged to the first connecting shaft 331 before the linkage member 41 turns over and folds, and a polygon linkage structure is formed between the linkage member 41, the diagonal rod 33, and the first side frame 2, which can ensure the position of the linkage member 41 in the unfolded state, or a polygon linkage structure is formed between the linkage member 41, the diagonal rod 33, the folding base frame 1, and the first side frame 2, which can be positioned and connected to the second connecting shaft 323 after the linkage member 41 turns over and folds, and a triangular support structure is formed between the linkage member 41 and the first connecting rod 312 or the second connecting rod 322, which plays a supporting and safety role for the folded linkage member 41, and the linkage arm 42 cannot be unlocked to turn down the linkage member 41.

[0042] As shown in Figure 3 and Figure 5 , one end of the linkage arm hook 421 is hinged to the linkage member 41 through the third connecting shaft 411, the other end is detachably connected to the first connecting shaft 331 and the second connecting shaft 323 through the hooking part, and the hooking part is rotatable relative to the first connecting shaft 331, the position of the linkage arm hook 421 is changed by rotating the hooking part, the hooking part is switched between the first connecting shaft 331 and the second connecting shaft 323, and the polygon linkage structure before and after the linkage member 41 turns over is realized.

[0043] As shown in Figures 7-9As shown, as the second embodiment of the utility model also provides a folding stroller of quick folding linkage mechanism, the difference of this embodiment relative to the first embodiment is that the linkage member 41 is provided with a third connecting shaft 411, one end of the linkage arm hook 422 is detachably connected with the first connecting shaft 331 and the second connecting shaft 323 through a first detachable part, and the first detachable part is rotatable relative to the first connecting shaft 331, the other end is detachably connected with the third connecting shaft 411 through a second detachable part, and the second detachable part is rotatable relative to the third connecting shaft 411, the linkage arm hook is provided with a connecting structure of large hole at the outer end and small hole at the inner end, and is fixed and rotated through the clamping between the first, second and third connecting shafts, when the detachable connection, the first connecting shaft 331 or the second connecting shaft 323 or the third connecting shaft is moved from the inner small hole to the outer large hole by one side of the upper pulling linkage member 41, that is, the detachable connection can be completed.

[0044] As shown, Figures 7-9 The linkage member 41 comprises two oppositely arranged linkage rods 412 and a supporting rod 413 connected between the two linkage rods 412, the two sides of the linkage member 41 are hinged with the first side frame 2 through the two linkage rods 412, facilitating the turnover of the linkage member 41 during folding, the two linkage rods 412 are respectively overlapped on the inclined rods 33 of the two second side frames 3, the upper side of the linkage rod 412 and the supporting rod 413 forms a supporting surface for carrying users, a riding area is formed between the two second side frames 3 along the upper side of the linkage member 41 and the upper side of the folding bottom frame 1, which can carry objects and people, has high practicability, and is convenient for outdoor travel with heavy luggage and inconvenience of taking children, in addition, the two oppositely arranged linkage rods 47 are supported through the supporting rod 48, when the folding stroller is unfolded, the linkage mechanism 4 can also be supported between the two second side frames 3, thereby ensuring the stability of the overall structure of the folding stroller. When the cloth cover of the frame is used, the upper and lower material inlet windows can be formed on the cloth cover outside the first side frame 2, the two material inlet windows do not interfere with each other, and the cloth cover material inlet window can be independently opened for placement.

[0045] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

[0046] In summary, the above only describes the preferred embodiments of the utility model, and any changes and modifications made within the scope of the utility model patent application shall belong to the scope of the utility model patent.

Claims

1. A folding stroller having a quick fold linkage mechanism, characterized by: The utility model relates to a folding frame structure of a folding frame, comprising a folding base frame; two first side frames arranged respectively on both sides of the folding base frame along the length direction, each of the first side frame comprising two load-bearing vertical rods arranged oppositely, and each end of the folding base frame being hinged to the two first side frames; two second side frames arranged respectively on both sides of the folding base frame along the width direction, each of the second side frame comprising a first folding rod group and a second folding rod group hinged to each other, and a diagonal rod having one end connected to the first folding rod group or the second folding rod group and the other end hinged to the lower part of the corresponding first side frame or the folding base frame; a linkage mechanism comprising a linkage member arranged above the diagonal rod, and a linkage arm having two ends hinged to the linkage member and the diagonal rod respectively, the linkage member being arranged along the transverse direction and having one end hinged to the first side frame and the other end detachably lapped on the diagonal rod, and a polygonal linkage structure formed among the linkage member, the linkage arm, the diagonal rod, the first side frame, and the second side frame for linkage folding or unfolding of the first and second side frames.

2. The folding stroller of claim 1, wherein: The linkage member is detachably lapped on the diagonal rod by a lapping piece, the lapping piece comprising a lapping seat connected to the linkage member and a lapping part connected to the lapping seat, and a lapping groove concave from the bottom surface of the lapping part and matched with the diagonal rod.

3. The folding stroller of claim 2, wherein: The lapping groove is arranged in a fan-shaped structure along a first axis for the diagonal rod to rotate around the first axis during folding or unfolding of the first and second side frames, the lapping seat is sleeved on the linkage member and connected to the linkage member by a fastener.

4. The folding stroller of claim 2, wherein: The lapping piece further comprises a supporting part protruding from the inner side or the outer side of the lapping part, and a limiting concave surface for positioning a rod arranged on the side of the supporting part.

5. The folding stroller of any one of claims 1-4, wherein: The first folding rod group comprises at least one first cross rod, and the second folding rod group comprises at least one second cross rod arranged crosswise to the first cross rod and hinged to each other, the first cross rod being arranged on the inner side of the second cross rod, and the diagonal rod being integrally formed with the lower part of the first cross rod or the second cross rod.

6. The folding stroller of claim 5, wherein: The first folding rod group further comprises a first connecting rod hinged to the upper end of the first cross rod, and the second folding rod group further comprises a second connecting rod hinged to the upper end of the second cross rod, and the linkage member is arranged below the first connecting rod or the second connecting rod. One end of the upper side of the second side frame is hinged to one of the first side frames by the first connecting rod, and the other end of the upper side of the second side frame is hinged to the other of the first side frames by the second connecting rod. One end of the lower side of the second side frame is hinged to one of the first side frames by the lower end of the first cross rod or to the folding base frame, and the other end of the lower side of the second side frame is hinged to the other of the first side frames by the lower end of the second cross rod or to the folding base frame.

7. The folding stroller of claim 6, wherein: The linkage member is arranged between the two second side frames and hinged to the first side frame by a first hinge shaft, and a turnover area is formed between the two second side frames for the linkage member to be folded upward around the axis of the first hinge shaft. The first connecting rod or the second connecting rod is provided with a second connecting shaft, one end of the linkage arm is hinged to the linkage member, and the other end can be hinged to the first connecting shaft before the linkage member is folded over and forms the polygon linkage structure among the linkage member, the inclined rod and the first side frame, or forms the polygon linkage structure among the linkage member, the inclined rod, the folding base and the first side frame, and can be positioned and connected to the second connecting shaft after the linkage member is folded over and forms a triangular support structure with the linkage member and the first connecting rod or the second connecting rod.

8. The folding stroller of claim 7, wherein: One end of the linkage arm is hinged to the linkage member through a third connecting shaft, and the other end is detachably connected to the first connecting shaft and the second connecting shaft through a hooking part, and the hooking part is rotatable relative to the first connecting shaft.

9. The folding stroller of claim 7, wherein: The linkage member is provided with a third connecting shaft; one end of the linkage arm is detachably connected to the first connecting shaft and the second connecting shaft through a first dismounting part, and the first dismounting part is rotatable relative to the first connecting shaft, and the other end is detachably connected to the third connecting shaft through a second dismounting part, and the second dismounting part is rotatable relative to the third connecting shaft.

10. The folding stroller of any of claims 1-9, wherein: The linkage member includes two oppositely arranged linkage rods and a support rod connected between the two linkage rods, the two sides of the linkage member are respectively hinged to the first side frame through the two linkage rods, the two linkage rods are respectively overlapped on the inclined rods of the two second side frames, the upper sides of the linkage rods and the support rod form a support surface for carrying users, and a seating area is formed between the two second side frames along the upper sides of the linkage member and the folding base.

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