Folding cart with linkage mechanism

Abstract

The folding cart with the linkage mechanism comprises a folding bottom frame, first side frames, a second side frame and the linkage mechanism, each first side frame comprises a bearing vertical rod, the two ends of the folding bottom frame are hinged to the two first side frames respectively, the second side frame comprises a first folding rod set, a second folding rod set and a connecting rod, and the first folding rod set and the second folding rod set are hinged to each other. The linkage component is arranged below the connecting rod at intervals and hinged to the first side frame, the cantilever piece is used for hanging the linkage component, the upper end of the cantilever piece is hinged to the connecting rod, and the lower end of the cantilever piece is hinged to the linkage component. And the linkage component, the cantilever piece, the connecting rod and the first side frame are encircled to form a polygonal linkage structure for linking the folding or unfolding of the first side frame and the second 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 convenient to use.

Description

TECHNICAL FIELD

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

[0002] The trolley is a kind of tool for carrying goods, with the development of economy, people's demand for trolley multifunction is higher and higher, single current market sales folding structure frame, single function, small storage space, limited number of load, the length of load is also limited, cannot very good meet the requirement of modern travel outdoor activities.

[0003] In view of the above problems, the utility model discloses a camping folding trolley with the publication number CN218367875U, including front and rear side frame or left and right cross side frame, left and right cross side frame includes cross support pipe and auxiliary fixing pipe that is hinged between the upper end of cross support pipe and front and rear side frame, during folding or unfolding process, left and right cross side frame only through auxiliary fixing pipe and cross support pipe lower end and front and rear side frame between each other hinged linkage, auxiliary fixing pipe and front side frame or rear side frame there is no linkage, leading to the linkage effect between left and right cross side frame and front and rear side frame is poor, easy to jam, not convenient for travel use. SUMMARY

[0004] The utility model provides a folding trolley with linkage mechanism in prior art's deficiency, can further drive the linkage folding or unfolding between first side frame and second side frame by linkage mechanism in the use process, be favorable to the quick folding and unfolding of folding trolley whole, and simple structure, convenient to use.

[0005] The utility model provides a folding trolley with linkage mechanism, including folding bottom frame, two first side frames are arranged respectively in the length direction in the both sides of folding bottom frame, two second side frames are arranged respectively in the width direction in the both sides of folding bottom frame, and linkage mechanism, first side frame includes two load vertical rods that are oppositely arranged, and the both ends of folding bottom frame are hinged with two first side frames respectively, second side frame includes first folding rod group and second folding rod group that are hinged with each other, and the connecting rod is connected with first folding rod group or second folding rod group at one end, and is hinged with the upper portion of corresponding first side frame at the other end, linkage mechanism includes linkage member that is arranged in the lower of connecting rod and is hinged with first side frame, and the cantilever piece for hanging linkage member, the upper end of cantilever piece is hinged with connecting rod, and the lower end is hinged with linkage member, and the linkage member, cantilever piece, connecting rod and first side frame are formed around the polygon linkage structure for linkage first, second side frame folding or unfolding.

[0006] Preferably, the linkage member is arranged in parallel with the connecting rod, the cantilever piece is arranged in parallel with the load vertical rod, and the polygon linkage structure is provided as a parallelogram linkage member.

[0007] Preferably, the first folding rod set comprises at least one first cross rod, the second folding rod set comprises at least one second cross rod arranged in mutual cross with the first cross rod and hinged with each other, and the first cross rod is arranged inside the second cross rod;

[0008] One end of the connecting rod is hinged with the upper end of the first cross rod, and the other end is hinged with the upper part of the corresponding first side frame; and / or,

[0009] One end of the connecting rod is hinged with the upper end of the second cross rod, and the other end is hinged with the upper part of the corresponding first side frame

[0010] Preferably, one end of the upper side of the second side frame is hinged with one of the first side frames through the connecting rod hinged between the upper end of the first cross rod and the first side frame, and the other end of the upper side of the second side frame is hinged with the other first side frame through the connecting rod hinged between the upper end of the second cross rod and the other first side frame;

[0011] One end of the lower side of the second side frame is hinged with one of the first side frames through the lower end of the first cross rod, or is hinged with the folding base frame, and the other end of the lower side of the second side frame is hinged with the other first side frame through the lower end of the second cross rod, or is hinged with the folding base frame.

[0012] Preferably, the linkage member is arranged between the two second side frames and is hinged with the first side frame through the first hinge shaft, and a turnover area for the linkage member to turn over upwards around the axis of the first hinge shaft is formed between the two second side frames;

[0013] The connecting rod has a first connecting part and a second connecting part arranged on the side of the first connecting part close to the first side frame, one end of the cantilever member is hinged with the linkage member, and the other end can be hinged on the first connecting part and surround the linkage member, the connecting rod, and the first side frame to form the polygon linkage structure before the linkage member is turned over, and can be positioned and connected on the second connecting part and surround the linkage member and the connecting rod to form the triangular support structure after the linkage member is turned over.

[0014] Preferably, a first connecting shaft is arranged on the first connecting part, and a second connecting shaft is arranged on the second connecting part;

[0015] One end of the cantilever member is hinged with the linkage member through a third connecting shaft, and the other end is separably connected with 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, a first open slot for connecting the first connecting shaft and a second open slot for connecting the second connecting shaft are respectively arranged on the hooking part;

[0017] The first open slot comprises a hook portion and an open portion connected with the hook portion, the hook portion is hooked on the first connecting shaft and can rotate around the first connecting shaft, the inner diameter of the open portion is larger than the diameter of the first connecting shaft and smaller than the inner diameter of the hook portion, and the first connecting shaft can move along the radial direction of the cantilever element to be separated from or inserted into the hook portion; and / or,

[0018] The second open slot is arranged as a U-shaped slot, and when the cantilever element, the linkage member and the connecting rod form a triangular support structure, the slot opening of the second open slot is arranged along the lower side of the cantilever element, and the slot opening of the first open slot is arranged along the upper side of the cantilever element.

[0019] Preferably, the first connecting portion is provided with a first connecting shaft, the second connecting portion is provided with a second connecting shaft, and the linkage member is provided with a third connecting shaft.

[0020] One end of the cantilever element is connected with the first connecting shaft and the second connecting shaft through the first detachable portion, and the first detachable portion can rotate relative to the first connecting shaft, and the other end is connected with the third connecting shaft through the second detachable portion, and the second detachable portion can rotate relative to the third connecting shaft.

[0021] Preferably, the outer end of the first connecting shaft is provided with a first limiting head, the outer end of the second connecting shaft is provided with a second limiting head, and the outer end of the third connecting shaft is provided with a third limiting head.

[0022] The first detachable portion comprises a first hanging hole and a second hanging hole arranged on one side of the first hanging hole close to the second detachable portion, the first hanging hole is used for hooking on the first connecting shaft and can rotate around the first connecting shaft, the second hanging hole is used for hooking on the second connecting shaft, the inner diameter of the second hanging hole is larger than the width of the first limiting head and the second limiting head and larger than the inner diameter of the first hanging hole, the first connecting shaft or the second connecting shaft can move along the axial direction of the first connecting shaft or the second connecting shaft relative to the cantilever element to be separated from or inserted into the second hanging hole, the first hanging hole and the second hanging hole are connected through a first transition port, the inner diameter of the first transition port is larger than the diameter of the first connecting shaft, and the first connecting shaft can move along the radial direction of the cantilever element to be separated from or inserted into the first hanging hole.

[0023] The second detachable portion comprises a third hanging hole and a fourth hanging hole arranged on one side of the third hanging hole close to the first detachable portion, the third hanging hole is used for hooking on the third connecting shaft and can rotate around the third connecting shaft, the inner diameter of the fourth hanging hole is larger than the width of the third limiting head and larger than the inner diameter of the third hanging hole, the third connecting shaft can move along the axial direction of the third connecting shaft relative to the cantilever element to be separated from or inserted into the fourth hanging hole, the third hanging hole and the fourth hanging hole are connected through a second transition port, the inner diameter of the second transition port is larger than the diameter of the third connecting shaft, and the third connecting shaft can move along the radial direction of the cantilever element to be separated from or inserted into the third hanging hole.

[0024] 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, and the two linkage rods are respectively hung on the connecting rods of the two second side frames through the cantilever members, 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.

[0025] The folding stroller provided by the utility model has the linkage mechanism, the linkage mechanism comprises the linkage member arranged below the connecting rod and hinged to the first side frame and the cantilever member for hanging the linkage member, the upper end of the cantilever member is hinged to the connecting rod, the lower end is hinged to the linkage member, the linkage member, the cantilever member, the connecting rod and the first side frame surround to form a polygonal linkage structure for linkage folding or unfolding of the first and second side frames, when the folding base is lifted to drive the first and second side frames to be folded, the first and second side frames can be linkage folded through the first and second folding rod groups and the connecting rod between the first and second side frames, and further linkage folded through the linkage member and the cantilever member hinged to each other and turned downward to drive the first and second side frames to be linkage folded, when the two first side frames are pulled away from each other to drive the first and second side frames to be unfolded, the first and second side frames can be linkage unfolded through the first and second folding rod groups and the connecting rod between the first and second side frames, and further linkage unfolded through the linkage member and the cantilever member hinged to each other and turned upward to drive the first and second side frames to be linkage unfolded, so that the folding stroller of the utility model can further drive the first and second side frames to be linkage unfolded through the linkage mechanism in the use process, the folding stroller is more favorable for rapid folding and unfolding of the whole folding stroller, and the structure is simple and the use is more convenient.

[0026] 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 through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings described herein are used to provide further understanding of the utility model, constitute a part of the present application, the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.

[0028] Figure 1 It is the structure schematic view of the folding stroller of the first embodiment of the utility model.

[0029] Figure 2 It is the explosion view of the folding stroller of the first embodiment of the utility model.

[0030] Figure 3Structure schematic view of linkage mechanism of the first embodiment of the utility model.

[0031] Figure 4 Structure schematic view of folding stroller in single layer mode of the first embodiment of the utility model.

[0032] Figure 5 Structure schematic view of cantilever part of the first embodiment of the utility model.

[0033] Figure 6 Structure schematic view of folding stroller of the second embodiment of the utility model.

[0034] Figure 7 Structure schematic view of folding stroller in single layer mode of the second embodiment of the utility model.

[0035] Figure 8 Structure schematic view of cantilever part of folding stroller of the second embodiment of the utility model. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] As Figure 1As shown in the first embodiment of the utility model, a folding cart with linkage mechanism is provided, which comprises a folding chassis 1, two first side frames 2 arranged on both sides of the folding chassis 1 along the length direction, two second side frames 3 arranged on both sides of the folding chassis 1 along the width direction, and a linkage mechanism 4. The first side frame 2 comprises two load-bearing vertical rods 21 arranged oppositely, and the two ends of the folding chassis 1 are hinged to the two first side frames 2 respectively. The second side frame 3 comprises a first folding rod group 31 and a second folding rod group 32 hinged to each other, and a connecting rod 33 connected to the first folding rod group 31 or the second folding rod group 32 at one end and hinged to the upper part of the corresponding first side frame 2 at the other end. The linkage mechanism 4 comprises a linkage member 41 arranged below the connecting rod 33 and hinged to the first side frame 2, and a cantilever member 42 for suspending the linkage member 41, the upper end of the cantilever member 42 is hinged to the connecting rod 33, and the lower end is hinged to the linkage member 41. The linkage member 41, the cantilever member 42, the connecting rod 33, and the first side frame 2 form a polygonal linkage structure around for linkage folding or unfolding of the first and second side frames. When the folding chassis 1 is lifted to drive the first side frame 2 and the second side frame 3 to fold, the first and second folding rod groups and the connecting rod 33 can be further folded by the linkage of the linkage member 41 and the cantilever member 42, and the first side frame 2 and the second side frame 3 can be driven to fold by the linkage of the linkage member 41 and the cantilever member 42. When the two first side frames 2 are pulled away from each other to drive the first side frame 2 and the second side frame 3 to unfold, the first and second folding rod groups and the connecting rod 33 can be further unfolded by the linkage of the linkage member 41 and the cantilever member 42, and the first side frame 2 and the second side frame 3 can be driven to unfold by the linkage of the linkage member 41 and the cantilever member 42. Thus, the folding cart of the embodiment can further drive the linkage folding or unfolding of the first side frame 2 and the second side frame 3 by the linkage mechanism 4 during use, which is more conducive to the rapid folding and unfolding of the folding cart as a whole, and the structure is simple and convenient to use. In the embodiment, the linkage mechanism 4 is arranged only between one of the first side frames 2 and the two second side frames 3, and drives the linkage folding or unfolding of the first side frame 2 and the second side frame 3 by the linkage mechanism 4 on one side. 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 to form a double-sided linkage mechanism, so that the linkage folding or unfolding of the first side frame 2 and the second side frame 3 is driven by the linkage mechanism 4 on both sides, which is more conducive to the rapid folding and unfolding of the cart.

[0042] As shown in the first embodiment of the utility model, a folding cart with linkage mechanism is provided, which comprises a folding chassis 1, two first side frames 2 arranged on both sides of the folding chassis 1 along the length direction, two second side frames 3 arranged on both sides of the folding chassis 1 along the width direction, and a linkage mechanism 4. The first side frame 2 comprises two load-bearing vertical rods 21 arranged oppositely, and the two ends of the folding chassis 1 are hinged to the two first side frames 2 respectively. The second side frame 3 comprises a first folding rod group 31 and a second folding rod group 32 hinged to each other, and a connecting rod 33 connected to the first folding rod group 31 or the second folding rod group 32 at one end and hinged to the upper part of the corresponding first side frame 2 at the other end. The linkage mechanism 4 comprises a linkage member 41 arranged below the connecting rod 33 and hinged to the first side frame 2, and a cantilever member 42 for suspending the linkage member 41, the upper end of the cantilever member 42 is hinged to the connecting rod 33, and the lower end is hinged to the linkage member 41. The linkage member 41, the cantilever member 42, the connecting rod 33, and the first side frame 2 form a polygonal linkage structure around for linkage folding or unfolding of the first and second side frames. When the folding chassis 1 is lifted to drive the first side frame 2 and the second side frame 3 to fold, the first and second folding rod groups and the connecting rod 33 can be further folded by the linkage of the linkage member 41 and the cantilever member 42, and the first side frame 2 and the second side frame 3 can be driven to fold by the linkage of the linkage member 41 and the cantilever member 42. When the two first side frames 2 are pulled away from each other to drive the first side frame 2 and the second side frame 3 to unfold, the first and second folding rod groups and the connecting rod 33 can be further unfolded by the linkage of the linkage member 41 and the cantilever member 42, and the first side frame 2 and the second side frame 3 can be driven to unfold by the linkage of the linkage member 41 and the cantilever member 42. Thus, the folding cart of the embodiment can further drive the linkage folding or unfolding of the first side frame 2 and the second side frame 3 by the linkage mechanism 4 during use, which is more conducive to the rapid folding and unfolding of the folding cart as a whole, and the structure is simple and convenient to use. In the embodiment, the linkage mechanism 4 is arranged only between one of the first side frames 2 and the two second side frames 3, and drives the linkage folding or unfolding of the first side frame 2 and the second side frame 3 by the linkage mechanism 4 on one side. 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 to form a double-sided linkage mechanism, so that the linkage folding or unfolding of the first side frame 2 and the second side frame 3 is driven by the linkage mechanism 4 on both sides, which is more conducive to the rapid folding and unfolding of the cart. Figure 1 ​

[0043] As shown in Figure 2 , the first folding rod group 31 comprises at least one first cross rod 311, the second folding rod group 32 comprises 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 inside the second cross rod 321, one end of the connecting rod 33 is hinged with the upper end of the first cross rod 311, and the other end is hinged with the upper part of the corresponding first side frame 2, and one end of the connecting rod 33 is hinged with the upper end of the second cross rod 321, and the other end is hinged with the upper part of the corresponding first side frame 2, and the inner and outer staggered cross folding is simple in structure and not easy to damage.

[0044] As shown in Figure 2 , one end of the upper side of the second side frame 3 is hinged with one of the first side frames 2 through the connecting rod 33 hinged between the upper end of the first cross rod 311 and the first side frame 2, the other end of the upper side of the second side frame 3 is hinged with the other first side frame 2 through the connecting rod 33 hinged between the upper end of the second cross rod 321 and the other first side frame 2, one end of the lower side of the second side frame 3 is hinged with one of the first side frames 2 through the lower end of the first cross rod 311, or is hinged with the folding bottom frame 1, the other end of the lower side of the second side frame 3 is hinged with the other first side frame 2 through the lower end of the second cross rod 321, or is hinged with the folding bottom frame 1, forming a cross folding structure, and the second side frame 3 is hinged with the first side frame 2 through the hinge, so that the second side frame 3 can be folded upward along the first side frame 2 when folding, so that the entire frame achieves the effect of folding.

[0045] As shown in Figure 3 and Figure 4 , the linkage member 41 is arranged between the two second side frames 3 and is hinged with the first side frame 2 through the first hinge shaft, the two second side frames 3 form a turnover area for the linkage member 41 to turn over and fold upward around the axis of the first hinge shaft, the connecting rod 33 has a first connecting part 34 and a second connecting part 35 arranged on the side of the first connecting part 34 close to the first side frame 2, one end of the cantilever member 42 is hinged with the linkage member 41, and the other end can be hinged on the first connecting part 34 before the linkage member 41 is turned over and folded, and forms a polygonal linkage structure around the linkage member 41, the connecting rod 33, and the first side frame 2, and can be positioned and connected on the second connecting part 35 after the linkage member 41 is turned over and folded, and forms a triangular support structure around the linkage member 41 and the connecting rod 33, supports the turned over and folded linkage member 41, and maintains the stability of the frame after turnover.

[0046] As shown in Figure 4As shown in the first connecting part 34 is provided with the first connecting shaft 341, the second connecting part 35 is provided with the second connecting shaft 351, the cantilever piece 42 is hinged to the linkage member 41 through the third connecting shaft 331 at one end, and is detachably connected to the first connecting shaft 341 and the second connecting shaft 351 through the hooking part at the other end, and the hooking part is rotatable relative to the first connecting shaft 341, and the position of the linkage arm hook is changed by rotating the hooking part, so that the hooking part is switched between the first connecting shaft 341 and the second connecting shaft 351, and the polygon linkage structure before and after the linkage member 41 is turned over and the triangular support structure are realized.

[0047] As shown in the first connecting part 34 is provided with the first connecting shaft 341, the second connecting part 35 is provided with the second connecting shaft 351, the cantilever piece 42 is hinged to the linkage member 41 through the third connecting shaft 331 at one end, and is detachably connected to the first connecting shaft 341 and the second connecting shaft 351 through the hooking part at the other end, and the hooking part is rotatable relative to the first connecting shaft 341, and the position of the linkage arm hook is changed by rotating the hooking part, so that the hooking part is switched between the first connecting shaft 341 and the second connecting shaft 351, and the polygon linkage structure before and after the linkage member 41 is turned over and the triangular support structure are realized. Figure 5 As shown in the first connecting part 34 is provided with the first connecting shaft 341, the second connecting part 35 is provided with the second connecting shaft 351, the cantilever piece 42 is hinged to the linkage member 41 through the third connecting shaft 331 at one end, and is detachably connected to the first connecting shaft 341 and the second connecting shaft 351 through the hooking part at the other end, and the hooking part is rotatable relative to the first connecting shaft 341, and the position of the linkage arm hook is changed by rotating the hooking part, so that the hooking part is switched between the first connecting shaft 341 and the second connecting shaft 351, and the polygon linkage structure before and after the linkage member 41 is turned over and the triangular support structure are realized.

[0048] As shown in the first connecting part 34 is provided with the first connecting shaft 341, the second connecting part 35 is provided with the second connecting shaft 351, the cantilever piece 42 is hinged to the linkage member 41 through the third connecting shaft 331 at one end, and is detachably connected to the first connecting shaft 341 and the second connecting shaft 351 through the hooking part at the other end, and the hooking part is rotatable relative to the first connecting shaft 341, and the position of the linkage arm hook is changed by rotating the hooking part, so that the hooking part is switched between the first connecting shaft 341 and the second connecting shaft 351, and the polygon linkage structure before and after the linkage member 41 is turned over and the triangular support structure are realized. Figure 6 As shown in the first connecting part 34 is provided with the first connecting shaft 341, the second connecting part 35 is provided with the second connecting shaft 351, the cantilever piece 42 is hinged to the linkage member 41 through the third connecting shaft 331 at one end, and is detachably connected to the first connecting shaft 341 and the second connecting shaft 351 through the hooking part at the other end, and the hooking part is rotatable relative to the first connecting shaft 341, and the position of the linkage arm hook is changed by rotating the hooking part, so that the hooking part is switched between the first connecting shaft 341 and the second connecting shaft 351, and the polygon linkage structure before and after the linkage member 41 is turned over and the triangular support structure are realized. Figure 7 As shown in the first connecting part 34 is provided with the first connecting shaft 341, the second connecting part 35 is provided with the second connecting shaft 351, the cantilever piece 42 is hinged to the linkage member 41 through the third connecting shaft 331 at one end, and is detachably connected to the first connecting shaft 341 and the second connecting shaft 351 through the hooking part at the other end, and the hooking part is rotatable relative to the first connecting shaft 341, and the position of the linkage arm hook is changed by rotating the hooking part, so that the hooking part is switched between the first connecting shaft 341 and the second connecting shaft 351, and the polygon linkage structure before and after the linkage member 41 is turned over and the triangular support structure are realized.

[0049] As shown in the first connecting part 34 is provided with the first connecting shaft 341, the second connecting part 35 is provided with the second connecting shaft 351, the cantilever piece 42 is hinged to the linkage member 41 through the third connecting shaft 331 at one end, and is detachably connected to the first connecting shaft 341 and the second connecting shaft 351 through the hooking part at the other end, and the hooking part is rotatable relative to the first connecting shaft 341, and the position of the linkage arm hook is changed by rotating the hooking part, so that the hooking part is switched between the first connecting shaft 341 and the second connecting shaft 351, and the polygon linkage structure before and after the linkage member 41 is turned over and the triangular support structure are realized. Figures 5-8As shown, the outer end of the first connecting shaft 341 is provided with a first limiting head 342, the outer end of the second connecting shaft 351 is provided with a second limiting head 352, the outer end of the third connecting shaft 331 is provided with a third limiting head 332, the first detachable part 45 includes a first hanging hole 451 and a second hanging hole 452 arranged on the side of the first hanging hole 451 close to the second detachable part 46, the first hanging hole 451 is used for hooking on the first connecting shaft 341 and can rotate around the first connecting shaft 341, the second hanging hole 452 is used for hooking on the second connecting shaft 351, the inner diameter of the second hanging hole 452 is greater than the width of the first limiting head 342 and the second limiting head 352 and greater than the inner diameter of the first hanging hole 451, so as to allow the first connecting shaft 341 or the second connecting shaft 351 to move axially relative to the cantilever piece 42 to disengage or extend into the second hanging hole 452, the first hanging hole 451 and the second hanging hole 452 are communicated through a first transition port 453, the inner diameter of the first transition port 453 is greater than the diameter of the first connecting shaft 341, so as to allow the first connecting shaft 341 to move radially relative to the cantilever piece 42 to disengage or extend into the first hanging hole 451, the second detachable part 46 includes a third hanging hole 461 and a fourth hanging hole 462 arranged on the side of the third hanging hole 461 close to the first detachable part 45, the third hanging hole 461 is used for hooking on the third connecting shaft 331 and can rotate around the third connecting shaft 331, the inner diameter of the fourth hanging hole 462 is greater than the width of the third limiting head 332 and greater than the inner diameter of the third hanging hole 461, so as to allow the third connecting shaft 331 to move axially relative to the cantilever piece 42 to disengage or extend into the fourth hanging hole 462, the third hanging hole 461 and the fourth hanging hole 462 are communicated through a second transition port 463, the inner diameter of the second transition port 463 is greater than the diameter of the third connecting shaft 331, so as to allow the third connecting shaft 331 to move radially relative to the cantilever piece 42 to disengage or extend into the third hanging hole 461, when folding is needed, the upper pulling linkage member 41 extends the first and second limiting heads into the second and fourth hanging holes from the first and third hanging holes through the first and second transition ports, so as to take out the cantilever piece 42.

[0050] As Figure 8As shown, the linkage member 41 comprises two oppositely arranged linkage rods 47 and a support rod 48 connected between the two linkage rods 47, the two sides of the linkage member 41 are respectively hinged to the first side frame 2 through the two linkage rods 47, the two linkage rods 47 are respectively hung on the connecting rods 33 of the two second side frames 3 through the cantilever members 42, the upper sides of the linkage rods 47 and the support rod 48 form a support surface for carrying users, a seating area is formed between the two second side frames 3 and arranged along the upper sides of the linkage member 41 and the folding bottom frame 1, which can carry objects and people, has strong practicability, and is convenient for outdoor travel, heavy luggage and inconvenience of taking children, in addition, the two oppositely arranged linkage rods 47 are supported through the support 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 to place.

[0051] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application 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 present application.

[0052] In summary, the above only describes the preferred embodiments of the present application, and any changes and modifications made within the scope of the patent application of the present application shall be included in the scope of the patent of the present application.

Claims

1. A folding stroller with linkage, characterized in that, The utility model relates to 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 a first side frame; 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 connecting rod having one end connected to the first folding rod group or the second folding rod group and the other end hinged to the upper part of a corresponding first side frame; a linkage mechanism comprising a linkage member arranged below the connecting rod and hinged to the first side frame, and a cantilever member for suspending the linkage member, the upper end of the cantilever member being hinged to the connecting rod and the lower end being hinged to the linkage member, the linkage member, the cantilever member, the connecting rod and the first side frame forming a polygonal linkage structure therebetween for folding or unfolding the first and second side frames.

2. The folding stroller of claim 1, wherein: The linkage member is arranged in parallel with the connecting rod, and the cantilever member is arranged in parallel with the load-bearing vertical rods, and the polygonal linkage structure is provided as a parallelogram linkage member.

3. The folding stroller of claim 1, 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 in cross with the first cross rod and hinged to each other, and the first cross rod is arranged inside the second cross rod. One end of the connecting rod is hinged to the upper end of the first cross rod, and the other end is hinged to the upper part of a corresponding first side frame; and / or One end of the connecting rod is hinged to the upper end of the second cross rod, and the other end is hinged to the upper part of a corresponding first side frame.

4. The folding stroller of claim 3, wherein: One end of the upper side of the second side frame is hinged to one of the first side frames through the connecting rod hinged between the upper end of the first cross rod and the first side frame, and the other end of the upper side of the second side frame is hinged to the other of the first side frames through the connecting rod hinged between the upper end of the second cross rod and the other first side frame. One end of the lower side of the second side frame is hinged to one of the first side frames through 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 through the lower end of the second cross rod, or is hinged to the folding base frame.

5. The folding stroller of any of claims 1-4, wherein: The linkage member is arranged between the two second side frames and is hinged to the first side frame through a first hinge shaft, and a turnover area is formed between the two second side frames for the linkage member to be folded upwardly about the axis of the first hinge shaft. The connecting rod has a first connecting portion and a second connecting portion arranged on the side of the first connecting portion close to the first side frame, one end of the cantilever member is hinged to the linkage member, and the other end can be hinged to the first connecting portion before the linkage member is folded upwardly and form the polygonal linkage structure therebetween with the linkage member, the connecting rod and the first side frame, and can be positioned and connected to the second connecting portion after the linkage member is folded upwardly and form a triangular support structure therebetween with the linkage member and the connecting rod.

6. The folding stroller of claim 5, wherein: A first connecting shaft is arranged on the first connecting portion, and a second connecting shaft is arranged on the second connecting portion. One end of the cantilever member 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 portion, and the hooking portion is rotatable relative to the first connecting shaft.

7. The folding stroller of claim 6, wherein: The hooking part is respectively provided with a first open slot for connecting the first connecting shaft and a second open slot for connecting the second connecting shaft; The first open slot comprises a hooking part and an open part connected with the hooking part, the hooking part is hooked on the first connecting shaft and can rotate around the first connecting shaft, the inner diameter of the open part is larger than the diameter of the first connecting shaft and smaller than the inner diameter of the hooking part, for the first connecting shaft to move along the radial direction of the cantilever to be separated or inserted into the hooking part; and / or, The second open slot is arranged as a U-shaped slot, when the cantilever, the linkage member and the connecting rod form a triangular support structure, the slot opening of the second open slot is arranged along the lower side of the cantilever, and the slot opening of the first open slot is arranged along the upper side of the cantilever.

8. The folding stroller of claim 5, wherein: The first connecting part is provided with the first connecting shaft, the second connecting part is provided with the second connecting shaft, and the linkage member is provided with the third connecting shaft; One end of the cantilever is detachably connected with the first connecting shaft and the second connecting shaft through the first detachable part, and the first detachable part is rotatable relative to the first connecting shaft, and the other end is detachably connected with the third connecting shaft through the second detachable part, and the second detachable part is rotatable relative to the third connecting shaft.

9. The folding stroller of claim 8, wherein: The outer end of the first connecting shaft is provided with a first limiting head, the outer end of the second connecting shaft is provided with a second limiting head, and the outer end of the third connecting shaft is provided with a third limiting head; The first detachable part comprises a first hanging hole and a second hanging hole arranged on one side of the first hanging hole close to the second detachable part, the first hanging hole is used for hooking on the first connecting shaft and can rotate around the first connecting shaft, the second hanging hole is used for hooking on the second connecting shaft, the inner diameter of the second hanging hole is larger than the width of the first limiting head and the second limiting head and larger than the inner diameter of the first hanging hole, for the first connecting shaft or the second connecting shaft to move along the axial direction of the cantilever to be separated or inserted into the second hanging hole, the first hanging hole and the second hanging hole are communicated through a first transition port, the inner diameter of the first transition port is larger than the diameter of the first connecting shaft, for the first connecting shaft to move along the radial direction of the cantilever to be separated or inserted into the first hanging hole; The second detachable part comprises a third hanging hole and a fourth hanging hole arranged on one side of the third hanging hole close to the first detachable part, the third hanging hole is used for hooking on the third connecting shaft and can rotate around the third connecting shaft, the inner diameter of the fourth hanging hole is larger than the width of the third limiting head and larger than the inner diameter of the third hanging hole, for the third connecting shaft to move along the axial direction of the cantilever to be separated or inserted into the fourth hanging hole, the third hanging hole and the fourth hanging hole are communicated through a second transition port, the inner diameter of the second transition port is larger than the diameter of the third connecting shaft, for the third connecting shaft to move along the radial direction of the cantilever to be separated or inserted into the third hanging hole.

10. The folding stroller of any of claims 1-9, wherein: The linkage member comprises 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 with the first side frame through the two linkage rods, the two linkage rods are respectively hung on the connecting rods of the two second side frames through the cantilever, the upper sides of the linkage rod and the support rod form a support surface for carrying the user, and a riding area is formed between the two second side frames and arranged along the upper side of the linkage member and the upper side of the folding base.

Images