Bidirectional folding baby stroller

Abstract

A stroller frame of the bi-directional folding stroller comprises side stroller frames which are in bilateral symmetry and a transverse supporting assembly which is arranged between two side supports and can be transversely folded, the side supports comprise front supports, rear supports and push rod assemblies, and the push rod assemblies comprise upper push rods and lower push rods which are rotationally connected. The side support further comprises a rear supporting rod and a lower folding supporting rod which is rotatably connected between the front support and the rear support and can be folded front and back, the upper end of the rear supporting rod is rotatably connected with the lower portion of the upper push rod, and the lower end of the rear supporting rod is fixedly arranged on the rear portion of the lower folding supporting rod. The transverse supporting assembly comprises a seat frame assembly capable of being folded transversely, a pedal frame assembly capable of being folded transversely and a back supporting frame assembly capable of being folded transversely. The folding mechanism is novel in structure and stable in linkage, the frame is driven to be folded in the left-right direction while being folded in the front-back direction, bidirectional folding of the frame can be achieved conveniently, operation is convenient, folding is fast, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to a two-way folding baby stroller. Background Art

[0002] The baby stroller in the prior art is a tool cart designed to facilitate outdoor activities for infants. It is a means of transportation for babies when going out and is even a necessity for taking care of infants. With the increasing living standards, the foldable baby stroller among baby strollers is more and more used in life due to its convenient carrying. However, most baby strollers on the market are folded by the cooperation of a push rod, a front bracket and a rear bracket to reduce the volume of the whole vehicle, but there is still a problem that they still occupy a large space after folding. Therefore, there is a need for a baby stroller with a better folding effect and more space-saving storage, which is convenient for use and carrying. Summary of the Invention

[0003] The purpose of the utility model is to provide a baby stroller that is reliable in use and can be folded in two directions. After folding, the overall structure is compact, the volume is smaller, and it is convenient to carry and store when going out.

[0004] The technical solution of the utility model is: a two-way folding baby stroller, including a frame having a deployed position and a folded position, and a locking mechanism for locking the frame when the frame is in the deployed position. The frame includes side frames symmetrically arranged on the left and right and a cross brace assembly disposed between the left and right side brackets and capable of being horizontally folded. The side brackets include a front bracket with a front wheel assembly installed at the bottom, a rear bracket with a rear wheel assembly installed at the bottom, and a push rod assembly. The push rod assembly includes an upper push rod and a lower push rod rotatably connected. The upper ends of the front bracket and the rear bracket are rotatably connected to the lower end of the lower push rod. The side bracket further includes a rear support rod and a lower folding strut rotatably connected between the front bracket and the rear bracket and capable of being folded back and forth. The upper end of the rear support rod is rotatably connected to the lower part of the upper push rod, and the lower end of the rear support rod is fixedly arranged at the rear of the lower folding strut.

[0005] The cross brace assembly includes a seat frame assembly capable of being horizontally folded, a footrest frame assembly capable of being horizontally folded, and a backrest frame assembly capable of being horizontally folded. The seat frame assembly is installed between the lower push rod and the rear support rod. The footrest frame assembly is installed between the front brackets on both sides. The backrest frame assembly is installed between the rear brackets and the lower folding struts on both sides.

[0006] As a preferred technical solution, the lower folding strut includes a front strut and a rear strut. The front end of the front strut is rotatably connected to the front bracket. The rear end of the front strut is rotatably connected to the front end of the rear strut. The rear end of the rear strut is rotatably connected to the rear bracket.

[0007] As a preferred technical solution, the rear part of the rear support rod has a rear support rod connecting part that extends backward and upward and is fixedly connected to the lower end of the rear support rod, and a back support frame connecting part that extends downward and is for installing the back support frame assembly.

[0008] As a preferred technical solution, the back support frame assembly includes a main back support frame rod, a back support frame sliding seat that slidably cooperates with the main back support frame rod, and upper back support frame rods, lower back support frame rods, linkage back support frame rods, and side back support frame rods that are symmetrically arranged on the left and right;

[0009] The inner ends of the upper back support frame rods on both sides and the inner ends of the lower back support frame rods on both sides are respectively rotatably connected to the upper end and the lower end of the main back support frame rod; the outer ends of the upper back support frame rods on both sides and the outer ends of the lower back support frame rods on both sides are respectively rotatably connected to the upper part and the lower part of the same-side rear support bracket;

[0010] The upper ends of the linkage back support frame rods on both sides are respectively rotatably connected to the left and right ends of the back support frame sliding seat; the lower ends of the linkage back support frame rods on both sides are respectively rotatably connected to the outer ends of the lower back support frame rods on the same side;

[0011] The upper ends of the side back support frame rods on both sides are respectively rotatably connected to the rear parts of the lower folding support rods on the same side through upper swivel joints, and the lower ends of the side back support frame rods on both sides are respectively rotatably connected to the lower back support frame rods on the same side through lower swivel joints.

[0012] Among them, the lower end of the linkage back support frame rod is coaxially rotatably connected to the outer end of the lower back support frame rod on the same side and the same-side rear support bracket. The rotation connection point between the lower end of the side back support frame rod and the lower back support frame rod on the same side is located inside the rotation connection point between the lower end of the linkage back support frame rod and the outer end of the lower back support frame rod on the same side and the same-side rear support bracket. The back support frame sliding seat is located on the main back support frame rod between the upper back support frame rod and the lower back support frame rod.

[0013] As a preferred technical solution, the footrest frame assembly includes a linkage seat, a left footrest, a right footrest, and an X-shaped folding support rod that can be horizontally folded;

[0014] The inner ends of the left footrest and the right footrest are respectively rotatably and slidably connected to the left and right sides of the linkage seat, and the outer ends of the left footrest and the right footrest are respectively rotatably connected to the front support brackets on the same side;

[0015] The two upper ends of the X-shaped folding support rod are respectively rotatably connected to the upper parts of the front support brackets on the same side; the two lower ends of the X-shaped folding support rod are respectively rotatably connected to the left footrest and the right footrest.

[0016] As a preferred technical solution, connection columns are formed at the inner ends of the left footrest and the right footrest, guiding grooves for the connection columns to rotate and slide left and right are respectively formed on the left and right sides of the linkage seat, and the inner ends of the left footrest and the right footrest are rotatably and slidably connected to the left and right sides of the linkage seat through the active cooperation of the connection columns and the guiding grooves;

[0017] The X-shaped folding strut includes a first footrest strut and a second footrest strut, which are rotatably connected at the middle parts of the first footrest strut and the second footrest strut.

[0018] As a preferred technical solution, the seat frame assembly includes a seat frame that can be horizontally folded and a backrest frame that can be horizontally folded. At the lower sides of the backrest frame, there are respectively rotatably connected backrest connecting seats. The two backrest connecting seats are slidably connected to the two sides of the seat frame, and the backrest connecting seats are rotatably connected to the lower parts of the lower push rods on the same side; the rear part of the seat frame is rotatably connected to the rear support rod.

[0019] As a preferred technical solution, the seat frame includes a main seat board, and seat frame front struts, seat frame rear struts, and seat frame side struts that are symmetrically arranged on the left and right; the inner ends of the two sides of the seat frame front struts and the two sides of the seat frame rear struts are respectively rotatably connected to the front and rear ends of the main seat board, and the outer ends of the seat frame front struts and the seat frame rear struts are respectively rotatably connected to the front and rear parts of the seat frame side struts on the same side.

[0020] As a preferred technical solution, the backrest frame includes a main backrest strut, and backrest upper struts, backrest lower struts, and backrest side struts that are symmetrically arranged on the left and right; the inner ends of the two sides of the backrest upper struts and the two sides of the backrest lower struts are respectively rotatably connected to the upper and lower ends of the main backrest strut, and the outer ends of the backrest upper struts and the backrest lower struts are respectively rotatably connected to the upper and lower parts of the backrest side struts on the same side.

[0021] As a preferred technical solution, the locking mechanism is arranged at the rotational connection of the upper push rod and the lower push rod, and there is a folding push handle that can be horizontally folded between the upper ends of the two side upper push rods.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] 1. The present utility model installs a seat frame assembly that can be horizontally folded between the lower push rod and the rear support rod, installs a footrest frame assembly that can be horizontally folded between the two side front brackets, and installs a backrest support frame assembly that can be horizontally folded between the two side rear brackets and the lower folding strut. It realizes the expansion and folding between the two side support brackets through three sets of cross strut assemblies with different positions and structures. The structure is novel and the linkage is stable. While the vehicle frame is folded forward and backward, it drives the vehicle frame to be folded left and right, facilitating the vehicle frame to achieve two-way folding at the same time. The operation is convenient, the folding is fast, and it saves time and effort.

[0024] 2. The present utility model sets a folding push handle between the upper push rods. While facilitating the left and right folding of the two side vehicle frames, it increases the horizontal connection strength of the two side upper push rods. In addition, it also facilitates the folding operation of the whole vehicle. When folding the whole vehicle, after unlocking the locking mechanism, pressing down the folding push handle forward can realize the folding of the vehicle frame. Description of the Drawings

[0025] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. The accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0026] The structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present utility model.

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a certain angle when the present utility model is in the unfolded state;

[0028] Figure 2 It is a three-dimensional structural schematic diagram of another angle when the present utility model is in the unfolded state;

[0029] Figure 3 It is a side structural schematic diagram when the present utility model is in the unfolded state;

[0030] Figure 4 It is a three-dimensional structural schematic diagram of a certain angle when the present utility model is in the folding process;

[0031] Figure 5 It is a three-dimensional structural schematic diagram of another angle when the present utility model is in the folding process;

[0032] Figure 6 It is a side structural schematic diagram when the present utility model is in the folding process;

[0033] Figure 7 It is a three-dimensional structural schematic diagram of a certain angle when the present utility model is in the folded state;

[0034] Figure 8 It is a three-dimensional structural schematic diagram of another angle when the present utility model is in the folded state;

[0035] Figure 9 It is a side structural schematic diagram when the present utility model is in the folded state;

[0036] Figure 10 It is a structural schematic diagram when the frame and the back support frame assembly of the present utility model are disassembled; (the side struts of the back support frame are not drawn)

[0037] Figure 11 Structural schematic diagram of the back support frame assembly in the present utility model; (side support rod of the back support frame not shown)

[0038] Figure 12 Assembly structural schematic diagram of the back support frame assembly in the present utility model;

[0039] Figure 13 Assembly structural schematic diagram of the side support rod of the back support frame, upper swivel joint and lower swivel joint in the present utility model;

[0040] Figure 14 Structural schematic diagram when the vehicle frame and the footrest frame assembly are disassembled in the present utility model;

[0041] Figure 15 Structural schematic diagram of the footrest frame assembly in the present utility model;

[0042] Figure 16 Assembly structural schematic diagram of the footrest frame assembly in the present utility model;

[0043] Figure 17 Structural schematic diagram when the vehicle frame and the seat frame assembly are disassembled in the present utility model;

[0044] Figure 18 Structural schematic diagram of the seat frame assembly in the present utility model;

[0045] Figure 19 Assembly structural schematic diagram of the seat frame assembly in the present utility model.

[0046] Wherein: 1 side bracket;

[0047] 2 cross brace assembly;

[0048] 210 seat frame assembly; 211 seat frame; 2111 main seat board; 2112 front support rod of seat frame; 2113 rear support rod of seat frame; 2114 side support rod of seat frame; 212 backrest frame; 2121 backrest connection seat; 2122 main back support rod; 2123 upper support rod of backrest; 2124 lower support rod of backrest; 2125 side support rod of backrest;

[0049] 220 footrest frame assembly; 2201 linkage seat; 2202 left footrest; 2203 right footrest; 2204 X-shaped folding brace; 2205 connecting column; 2206 guide groove;

[0050] 230 back support frame assembly; 2301 main support rod of back support frame; 2301 main support rod of back support frame; 2302 sliding seat of back support frame; 2303 upper support rod of back support frame; 2304 lower support rod of back support frame; 2305 linkage brace of back support frame; 2306 side support rod of back support frame; 2307 upper swivel joint; 2308 lower swivel joint;

[0051] 3 front wheel assembly;

[0052] 4 Front support bracket

[0053] 5 Rear wheel assembly

[0054] 6 Rear support bracket

[0055] 7 Push rod assembly; 701 Upper push rod; 702 Lower push rod

[0056] 8 Rear support rod

[0057] 9 Lower folding strut; 901 Front strut; 902 Rear strut; 9021 Rear support rod connection part; 9022 Back support frame connection part

[0058] 10 Brake handle

[0059] 11 Folding push handle; 1101 Push handle joint; 1102 Operation section; 1103 Push handle rod Detailed implementation manners

[0060] To make the objectives, technical solutions and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of this application. Obviously, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of this application without creative efforts fall within the scope of protection of this application. It can be understood that, without conflict, some technical means described in the various embodiments herein can be replaced or combined with each other.

[0061] In the description of the specification and claims of this application, if there are terms such as "first", "second", etc., they are only used to distinguish the described objects and do not have any sequential or technical meaning. Thus, the objects defined with "first", "second", etc. may explicitly or implicitly include one or more of such objects. Also, words such as "one" or "a" do not indicate a quantity limitation but rather indicate the existence of at least one, and "multiple" means not less than two.

[0062] In the description of the specification and claims of this application, if there are terms such as "connected", "installed", "fixed", "accommodated", etc., unless otherwise specified, they should all be understood in a broad sense. For example, "connected" can be a split connection or an integral connection; it can be directly connected or indirectly connected through an intermediate medium; it can be a non-detachable connection or a detachable connection. Also, for example, "accommodated" does not necessarily mean that the whole is completely accommodated, and this concept also includes a situation where a part protrudes outside and is partially accommodated. For those skilled in the art, the specific meanings of the foregoing terms in this application can be understood according to specific circumstances.

[0063] In the description of the specification and claims of the present application, if there are terms such as "upper", "lower", "horizontal", etc., indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. This is only for the purpose of clearly and simply describing the present application, rather than indicating or implying that the indicated elements must have a specific direction, be constructed and operated in a specific orientation. These directional terms are relative concepts used for description and clarification with respect to each other, and can change accordingly with the change of the orientation in which the components are placed in the drawings. For example, if the device in the figure is flipped, the element described as "below" other elements will be positioned "above" other elements.

[0064] In the description of the specification and claims of the present application, if there is the term "if", depending on the context, it can generally be interchanged with "when", "while", "in response to determining", or "in response to detecting".

[0065] In the description of the specification and claims of the present application, if there is "in the direction of" regarding motion, including motion with a directional component, it is not necessarily to understand the term "in the direction of" as motion only in that one direction. For those skilled in the art, the specific meaning of the foregoing terms in the present application can be understood according to specific circumstances.

[0066] As Figures 1 to 19 shown, a two-way folding baby stroller includes a frame having a deployed position and a folded position, and a locking mechanism for locking the frame when the frame is in the deployed position. The frame includes side frames 1 symmetrically arranged on the left and right, and a cross brace assembly 2 disposed between the left and right side brackets 1 and capable of being horizontally folded. The side bracket 1 includes a front bracket 4 with a front wheel assembly 3 mounted at the bottom, a rear bracket 6 with a rear wheel assembly 5 mounted at the bottom, and a push rod assembly 7. The push rod assembly 7 includes an upper push rod 701 and a lower push rod 702 rotatably connected. The upper ends of the front bracket 4 and the rear bracket 6 are rotatably connected to the lower end of the lower push rod 702. The side bracket 1 further includes a rear support rod 8 and a lower folding brace 9 rotatably connected between the front bracket 4 and the rear bracket 6 and capable of being folded back and forth. The lower folding brace 9 includes a front brace 901 and a rear brace 902. The front end of the front brace 901 is rotatably connected to the front bracket 4, the rear end of the front brace 901 is rotatably connected to the front end of the rear brace 902, and the rear end of the rear brace 902 is rotatably connected to the rear bracket 6. The upper end of the rear support rod 8 is rotatably connected to the lower part of the upper push rod 701, and the lower end of the rear support rod 8 is fixed to the rear part of the rear brace 902.

[0067] The cross-bracing assembly 2 includes a laterally foldable seat frame assembly 210, a laterally foldable footrest assembly 220, and a laterally foldable back support frame assembly 230; the seat frame assembly 210 is installed between the lower push rod 702 and the rear support rod 8, the footrest assembly 220 is installed between the front brackets 4 on both sides, and the back support frame assembly 230 is installed between the rear brackets 6 and the lower folding support rod 9 on both sides.

[0068] In this embodiment, when the frame is unfolded, the rotation point between the upper end of the rear support rod 8 and the upper push rod 701 is located below and in front of the rotation point between the lower push rod 702 and the upper push rod 701 .

[0069] In this embodiment, the rear portion of the rear support rod 902 has a rear support rod connecting portion 9021 extending rearward and upward and fixedly connected to the lower end of the rear support rod 8, and a back support frame connecting portion 9022 extending downward and for the back support frame assembly 230 to be installed.

[0070] In this embodiment, the back support frame assembly 230 includes a back support frame main support rod 2301, a back support frame sliding seat 2302 slidably matched with the back support frame main support rod 2301, and a back support frame upper support rod 2303, a back support frame lower support rod 2304, a back support frame linkage support rod 2305 and a back support frame side support rod 2306 arranged symmetrically on the left and right;

[0071] The inner ends of the upper support rods 2303 of the back support frames on both sides and the inner ends of the lower support rods 2304 of the back support frames on both sides are rotatably connected to the upper end and the lower end of the main support rod 2301 of the back support frame respectively; the outer ends of the upper support rods 2303 of the back support frames on both sides and the outer ends of the lower support rods 2304 of the back support frames on both sides are rotatably connected to the upper part and the lower part of the rear bracket 6 on the same side respectively;

[0072] The upper ends of the back support frame linkage support rods 2305 on both sides are rotatably connected to the left and right ends of the back support frame sliding seat 2302 respectively; the lower ends of the back support frame linkage support rods 2305 on both sides are rotatably connected to the outer ends of the back support frame lower support rods 2304 on the same side respectively;

[0073] The upper ends of the back support frame side braces 2306 on both sides are rotatably connected to the rear of the back support frame connection part 9022 of the same side rear brace 902 through the upper adapter 2307, and the lower ends of the back support frame side braces 2306 on both sides are rotatably connected to the back support frame lower brace 2304 on the same side through the lower adapter 2308. Among them, the upper adapter 2307 and the lower adapter 2308 are rotatably connected to the back support frame side braces 2306, respectively, and the rotation axis of the upper adapter 2307 and the back support frame side braces 2306 is vertically arranged with the rotation axis of the upper adapter 2307 and the back support frame connection part 9022; the rotation axis of the lower adapter 2308 and the back support frame side braces 2306 is vertically arranged with the rotation axis of the lower adapter 2308 and the back support frame lower brace 2304.

[0074] Among them, the lower end of the linkage strut 2305 of the back support frame is rotatably connected coaxially with the outer end of the lower strut 2304 of the back support frame on the same side and the rear support 6 on the same side. The rotation connection point between the lower end of the side strut 2306 of the back support frame and the lower strut 2304 of the back support frame on the same side is located inside the rotation connection point between the lower end of the linkage strut 2305 of the back support frame and the outer end of the lower strut 2304 of the back support frame on the same side and the rear support 6 on the same side. The sliding seat 2302 of the back support frame is located on the main strut 2301 of the back support frame between the upper strut 2303 and the lower strut 2304 of the back support frame.

[0075] In the figure of this embodiment, the upper strut 2303 of the back support frame is not a straight rod, but its inner part is in a straight rod shape, while the lower strut 2304 of the back support frame is basically in a straight rod shape except for a slight bend at the outer end.

[0076] When the vehicle frame is in the unfolded state, the connecting parts (the straight rod parts) between the inner sides of the upper struts 2303 of the back support frames on both sides and the main strut 2301 of the back support frame are unfolded in a straight line, and the connecting parts (the straight rod parts) between the inner sides of the lower struts 2304 of the back support frames on both sides and the main strut 2301 of the back support frame are unfolded in a straight line. The sliding seat 2302 of the back support frame is located at a high position on the main strut 2301 of the back support frame and abuts against the bottom of the inner section of the upper strut 2303 of the back support frame.

[0077] When the vehicle frame is folded, the main strut 2301 of the back support frame moves upward, and the connecting parts (the straight rod parts) between the inner sides of the upper struts 2303 of the back support frames on both sides and the main strut 2301 of the back support frame are folded downward in a V shape, and the connecting parts (the straight rod parts) between the inner sides of the lower struts 2304 of the back support frames on both sides and the main strut 2301 of the back support frame are folded downward in a V shape.

[0078] In this embodiment, the brake assembly between the rear wheel assemblies 5 on both sides can be arranged inside the lower strut 2304 of the back support frame as described above, and the brake handle 10 of the brake assembly can be arranged at the lower end of the main strut 2301 of the back support frame. Since the brake assembly is a conventional technology in the field, this embodiment only discloses a specific implementation position, and its types are diverse and not the focus of protection of this application, so no specific description and limitation are made here.

[0079] In this embodiment, the footrest assembly 220 includes a linkage seat 2201, a left footrest 2202, a right footrest 2203, and an X-shaped folding strut 2204 that can be horizontally folded;

[0080] The inner ends of the left footrest 2202 and the right footrest 2203 are respectively rotatably and slidably connected to the left and right sides of the linkage seat 2201, and the outer ends of the left footrest 2202 and the right footrest 2203 are respectively rotatably connected to the front support 4 on the same side;

[0081] The two upper ends of the X-shaped folding strut 2204 are respectively rotatably connected to the upper parts of the front brackets 4 on the same side; the two lower ends of the X-shaped folding strut 2204 are respectively rotatably connected to the left footrest 2202 and the right footrest 2203.

[0082] Wherein, connecting columns 2205 are formed at the inner ends of the left footrest 2202 and the right footrest 2203, guiding grooves 2206 for the connecting columns 2205 to rotate and slide left and right are respectively formed at the left and right sides of the linkage seat 2201, and the inner ends of the left footrest 2202 and the right footrest 2203 are rotatably and slidably connected to the left and right sides of the linkage seat 2201 through the activity cooperation between the connecting columns 2205 and the guiding grooves 2206.

[0083] Wherein, the X-shaped folding strut 2204 includes a first footrest strut and a second footrest strut, which are rotatably connected at the middle parts of the first footrest strut and the second footrest strut.

[0084] When the vehicle frame is in the unfolded state, the left footrest 2202, the right footrest 2203 and the linkage seat 2201 are in a horizontal state for the feet of the sitting child to rest on.

[0085] When the vehicle frame is folded, the X-shaped folding strut 2204 drives the inner sides of the left footrest 2202 and the right footrest 2203 and the linkage seat 2201 to move downward. At the same time, the left footrest 2202 and the right footrest 2203 move inwards relative to the linkage seat 2201, so that the left footrest 2202 and the right footrest 2203 are arranged in an inclined state with the outer side high and the inner side low, and the left footrest 2202 and the right footrest 2203 can be arranged in a V shape after folding.

[0086] In this embodiment, the seat frame assembly 210 includes a seat frame 211 that can be horizontally folded and a backrest frame 212 that can be horizontally folded. The lower parts of both sides of the backrest frame 212 are respectively rotatably connected with backrest connection seats 2121. The two backrest connection seats 2121 are slidably connected with both sides of the seat frame 211, and the backrest connection seats 2121 are rotatably connected with the lower parts of the lower push rods 701 on the same side; the rear part of the seat frame 211 is rotatably connected with the rear support rod 8.

[0087] Wherein, the seat frame 211 includes a main seat board 2111 and seat frame front struts 2112, seat frame rear struts 2113 and seat frame side struts 2114 that are symmetrically arranged left and right; the inner ends of the two side seat frame front struts 2112 and the two side seat frame rear struts 2113 are respectively rotatably connected with the front and rear ends of the main seat board 2111, and the outer ends of the seat frame front struts 2112 and the seat frame rear struts 2113 are respectively rotatably connected with the front and rear parts of the seat frame side struts 2114 on the same side.

[0088] Among them, the backrest frame 212 includes a main back support rod 2122, and upper back support rods 2123, lower back support rods 2124, and side back support rods 2125 that are symmetrically arranged on the left and right; the inner ends of the upper back support rods 2123 and the lower back support rods 2124 on both sides are respectively rotatably connected to the upper and lower ends of the main back support rod 2122, and the outer ends of the upper back support rods 2123 and the lower back support rods 2124 are respectively rotatably connected to the upper and lower parts of the side back support rods 2125 on the same side.

[0089] When the vehicle frame is in the unfolded state, the side seat frame support rods 2114 on both sides are arranged at intervals on both sides of the main seat board 2111, and the front seat frame support rod 2112 and the rear seat frame support rod 2113 are supported between the main seat board 2111 and the side seat frame support rods 2114; similarly, the side back support rods 2125 on both sides are arranged at intervals on both sides of the main back support rod 2122, and the upper back support rods 2123 and the lower back support rods 2124 are supported between the main back support rod 2122 and the side back support rods 2125.

[0090] When the vehicle frame is folded, the side seat frame support rods 2114 on both sides approach the main seat board 2111, and the front seat frame support rod 2112 and the rear seat frame support rod 2113 are retracted between the main seat board 2111 and the side seat frame support rods 2114; similarly, the side back support rods 2125 on both sides approach the main back support rod 2122, and the upper back support rods 2123 and the lower back support rods 2124 are retracted between the main back support rod 2122 and the side back support rods 2125.

[0091] In this embodiment, the locking mechanism is arranged at the rotational connection of the upper push rod 701 and the lower push rod 702, and a foldable push handle 11 that can be horizontally retracted is provided between the upper ends of the upper push rods 701 on both sides. Among them, the foldable push handle 11 includes a push handle joint 1101 connected to the upper push rods 701 on both sides, an operation section 1102 in the middle, and push handle rods 1103 that are symmetrically arranged on both sides of the operation section 1102. The outer ends of the push handle rods 1103 are rotatably connected to the push handle joints 1101 on the same side, and the inner ends of the push handle rods 1103 on both sides are respectively rotatably connected to the left and right ends of the operation section 1102. In this embodiment, the unlocking component 12 of the locking mechanism is preferably arranged on the operation section 1102 of the foldable push handle 11. This unlocking component 12 can be unlocked with one hand and simultaneously unlocks the locking at the rotational connection of the upper push rods 701 and the lower push rods 702 on both sides. Since this type of unlocking component is a conventional technology in the art, there are various types and it is not the focus of protection of this application, so no specific description and limitation are made here.

[0092] When folding the frame, first unlock the locking mechanism, then rotate the folding push handle 11 forward and press it down. The folding push handle 11 drives the upper push rod 701 to flip forward and the lower push rod 702 to flip backward and downward. At this time, under the linkage action of the rear support rod 8 and the lower folding support rod 9, the front bracket 4 is folded relative to the rear bracket 6, thereby realizing the folding of the frame in the front-back direction. While pressing down the folding push handle 11, the folding push handle 11 concaves and folds in the left-right direction, and the two side brackets 1 are folded in the left-right direction of the frame under the transverse folding action of the seat frame assembly 210, the footrest frame assembly 220, and the backrest frame assembly 230.

[0093] The structure of the present utility model is novel and the linkage is stable, which is convenient for the frame to realize two-way folding simultaneously, with convenient operation, fast folding, time-saving and labor-saving.

[0094] As a preferred implementation of the present invention, in the description of this specification, the description referring to terms such as "preferred" and "optional" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0095] The above embodiments are only used to illustrate the detailed solutions of the present invention. The present invention is not limited to the above detailed solutions, that is, it does not mean that the present invention must rely on the above detailed solutions to be implemented. Those skilled in the art should understand that any improvement to the present invention, the equivalent replacement of each raw material of the products of the present invention, the addition of auxiliary components, and the selection of specific methods, etc., all fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A bidirectional foldable stroller, comprising a frame having an unfolded position and a folded position, and a locking mechanism for locking the frame when the frame is in the unfolded position, the frame comprising a side frame symmetrically arranged on the left and right sides, and a cross brace assembly arranged between left and right side brackets and capable of being laterally folded, the side bracket comprising a front bracket with a front wheel assembly mounted on the bottom, a rear bracket with a rear wheel assembly mounted on the bottom, and a push rod assembly, the push rod assembly comprising an upper push rod and a lower push rod rotatably connected, characterized in that: The upper end of the front bracket and the upper end of the rear bracket are rotatably connected to the lower end of the lower push rod, and the side bracket also includes a rear support rod and a lower folding support rod rotatably connected between the front bracket and the rear bracket and can be folded forward and backward, the upper end of the rear support rod is rotatably connected to the lower part of the upper push rod, and the lower end of the rear support rod is fixedly arranged at the rear of the lower folding support rod; The cross-bracing assembly includes a laterally foldable seat frame assembly, a laterally foldable footrest assembly, and a laterally foldable back support frame assembly; the seat frame assembly is installed between the lower push rod and the rear support rod, the footrest assembly is installed between the front supports on both sides, and the back support frame assembly is installed between the rear supports on both sides and the lower folding support rod.

2. A two-way foldable baby stroller according to claim 1, characterized in that: The lower folding support rod comprises a front support rod and a rear support rod, wherein the front end of the front support rod is rotatably connected to the front bracket, the rear end of the front support rod is rotatably connected to the front end of the rear support rod, and the rear end of the rear support rod is rotatably connected to the rear bracket.

3. A two-way foldable baby stroller according to claim 2, characterized in that: The rear part of the rear support rod comprises a rear support rod connecting part extending backward and upward and fixedly connected to the lower end of the rear support rod, and a back support frame connecting part extending downward and for installing the back support frame assembly.

4. The bi-directional foldable stroller according to claim 1, characterized in that: The back support frame assembly includes a back support frame main support rod, a back support frame sliding seat slidably matched with the back support frame main support rod, and a back support frame upper support rod, a back support frame lower support rod, a back support frame linkage support rod and a back support frame side support rod arranged symmetrically on the left and right; The inner ends of the upper support rods of the back support frames on both sides and the inner ends of the lower support rods of the back support frames on both sides are rotatably connected to the upper end and the lower end of the main support rods of the back support frames respectively; the outer ends of the upper support rods of the back support frames on both sides and the outer ends of the lower support rods of the back support frames on both sides are rotatably connected to the upper part and the lower part of the rear support frames on the same side respectively; The upper ends of the linkage support rods of the back support frames on both sides are rotatably connected to the left and right ends of the back support frame sliding seat respectively; the lower ends of the linkage support rods of the back support frames on both sides are rotatably connected to the outer ends of the lower support rods of the back support frames on the same side respectively; The upper ends of the side support rods of the back support frames on both sides are rotatably connected to the rear parts of the lower folding support rods on the same side through upper adapters, and the lower ends of the side support rods of the back support frames on both sides are rotatably connected to the lower support rods of the back support frames on the same side through lower adapters.

5. The bi-directional foldable stroller according to claim 1, characterized in that: The footrest assembly comprises a linkage seat, a left footrest, a right footrest and a laterally foldable X-shaped folding support rod; The inner ends of the left footrest and the right footrest are respectively rotatably and slidably connected to the left and right sides of the linkage seat, and the outer ends of the left footrest and the right footrest are respectively rotatably connected to the front bracket on the same side; The two upper ends of the X-shaped folding support rod are rotatably connected to the upper part of the front bracket on the same side; the two lower ends of the X-shaped folding support rod are rotatably connected to the left footrest and the right footrest respectively.

6. A two-way foldable baby stroller according to claim 5, characterized in that: The inner ends of the left and right footrests are formed with connecting columns, and the left and right sides of the linkage seat are respectively formed with guide grooves for the connecting columns to rotate and slide left and right. The inner ends of the left and right footrests can rotate and slide with the left and right sides of the linkage seat through the active cooperation between the connecting columns and the guide grooves. The X-shaped folding support rod comprises a first stepping support rod and a second stepping support rod, and is formed by rotating and connecting the middle parts of the first stepping support rod and the second stepping support rod.

7. The bi-directional foldable baby stroller according to claim 1, characterized in that: The seat frame assembly includes a laterally foldable seat frame and a laterally foldable backrest frame, the lower sides of the backrest frame are rotatably connected with backrest connecting seats respectively, the two backrest connecting seats are slidably connected to the two sides of the seat frame, and the backrest connecting seats are rotatably connected to the lower part of the lower push rod on the same side; the rear part of the seat frame is rotatably connected to the rear support rod.

8. A two-way foldable baby stroller according to claim 7, characterized in that: The seat frame includes a main seat plate and a seat frame front support rod, a seat frame rear support rod and a seat frame side support rod that are symmetrically arranged on the left and right; the inner ends of the seat frame front support rods and the seat frame rear support rods on both sides are rotatably connected to the front and rear ends of the main seat plate, and the outer ends of the seat frame front support rods and the seat frame rear support rods are rotatably connected to the front and rear ends of the seat frame side support rods on the same side.

9. The bi-directional foldable stroller according to claim 7, characterized in that: The backrest frame includes a main back support rod and a backrest upper support rod, a backrest lower support rod and a backrest side support rod which are symmetrically arranged on the left and right; the inner ends of the backrest upper support rods and the backrest lower support rods on both sides are rotatably connected to the upper and lower ends of the main back support rod, and the outer ends of the backrest upper support rod and the backrest lower support rod are rotatably connected to the upper and lower parts of the backrest side support rods on the same side.

10. The bi-directional foldable baby stroller according to claim 1, characterized in that: The locking mechanism is arranged at the rotation connection of the upper push rod and the lower push rod, and a foldable push handle which can be folded laterally is arranged between the upper ends of the upper push rods on both sides.

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