Folding frame structure of stroller

Abstract

The utility model discloses a child stroller folding frame structure, a frame comprises a seat frame, a pedal frame, a push rod assembly, a front support and a rear support, the push rod assembly, the front support and the rear support are coaxially and rotatably connected, a folding supporting rod is rotatably connected between the front support and the rear support, and the seat frame comprises a front seat frame and a rear seat frame which are rotatably connected. The front seat frame is rotationally connected with the front bracket; the rear part of the pedal frame is rotationally connected with the front end of the folding supporting rod and the front end of the front seat frame respectively; a linkage rod is rotationally connected between the push rod assembly and the folding supporting rod. When the push rod assembly rotates backwards and is folded relative to the rear support, the push rod assembly drives the folding supporting rod to be folded through the linkage rod, and then folding and folding of the front support and the rear support, forward turning and folding of the pedal frame and folding and folding of the seat frame are achieved. The folding bicycle is novel and simple in structure, the whole bicycle can be quickly folded, and the folded bicycle is compact in overall structure, smaller in size and convenient to carry and store when a user goes out.

Description

Technical Field

[0001] The utility model relates to a folding frame structure of a child stroller. Background Art

[0002] The baby stroller in the prior art is a tool vehicle designed to facilitate outdoor activities for babies. It is a means of transportation for babies to go out, and it is also a necessity for taking care of babies. With the improvement of living standards, foldable baby strollers are more and more used in life because of their convenience of carrying. However, when the baby strollers on the market are folded, their seat frames are generally flipped backwards. Since the footrests are generally arranged in front of the seat frame, the footrests are very high, so that the frame still occupies a large space after folding. Therefore, there is a need for a baby stroller that is easy to fold and has a better folding effect, can save more storage space, and is convenient to use and carry. Summary of the invention

[0003] The utility model aims to provide a folding frame structure of a child stroller, which has a novel and simple structure and can realize rapid folding of the entire stroller. After folding, the overall structure is compact and the volume is smaller, which is convenient for carrying and storing.

[0004] The technical solution of the utility model is: a folding frame structure of a child stroller, comprising a frame with an unfolded position and a folded position, and a locking mechanism for locking the frame in the unfolded position, the frame comprising a seat frame, a footrest, a push rod assembly, a front bracket and a rear bracket connected in coaxial rotation, a folding support rod being rotatably connected between the front bracket and the rear bracket, the seat frame comprising a rotatably connected front seat frame and a rear seat frame, wherein the front seat frame is rotatably connected to the front bracket; the rear portion of the footrest is rotatably connected to the front end of the folding support rod and the front end of the front seat frame respectively; a linkage rod is rotatably connected between the push rod assembly and the folding support rod; when the push rod assembly is rotated backward and folded relative to the rear bracket, the push rod assembly drives the folding support rod to fold through the linkage rod, thereby realizing the folding and folding of the front bracket and the rear bracket, the forward flipping and folding of the footrest, and the folding and folding of the seat frame.

[0005] As a preferred technical solution, the rear portion of the front bracket has a connecting rod extending upward, and the rear end of the front seat frame and the front end of the rear seat frame are coaxially connected to the upper end of the connecting rod; when the seat frame is unfolded, the front seat frame and the rear seat frame form a sitting portion; when the seat frame is folded, the front seat frame flips forward and downward, and the rear seat frame flips backward and downward, and the seat frame folds into a V-shape with the opening downward.

[0006] As a preferred technical solution, the folding strut includes a front strut and a rear strut, the front part 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, and the rear part of the footrest is rotatably connected to the front end of the front strut of the folding strut; the upper end of the linkage rod is rotatably connected to the lower part of the push rod assembly, and the lower end of the linkage rod is rotatably connected to the rear strut.

[0007] As a preferred technical solution, when the frame is unfolded, the rotation connection point between the footrest and the front seat frame is located above and behind the rotation connection point between the footrest and the front support rod; the rotation connection point between the front support rod and the front bracket is located below and behind the rotation connection point between the footrest and the front support rod.

[0008] As a preferred technical solution, the lower end of the linkage rod is rotatably connected to the middle part of the rear support rod, and when the frame is folded, the front support rod and the rear support rod are folded into a V-shape with the opening upward.

[0009] As a preferred technical solution, the footrest includes a footrest connecting seat rotatably connected to the front seat frame and the folding support rod, and a footrest bracket rotatably connected to the front side of the footrest connecting seat, and a footrest angle adjustment mechanism is provided between the footrest and the footrest connecting seat.

[0010] As a preferred technical solution, the upper end of the push rod assembly is rotatably connected to a push handle.

[0011] As a preferred technical solution, the locking mechanism includes a first locking mechanism disposed between the push handle and the push rod assembly and a second locking mechanism disposed between the push rod assembly and the front bracket or between the push rod assembly and the rear bracket. Preferably, the first locking mechanism and the second locking mechanism are a linkage unlocking structure, and when the first locking mechanism is in an unlocked state, the lock of the second locking mechanism can be released by flipping the push handle forward.

[0012] As a preferred technical solution, the unlocking component of the first locking mechanism is arranged on the push handle. The unlocking component can be an unlocking knob or an unlocking handle.

[0013] Compared with the prior art, this application has the following advantages:

[0014] 1. When the push rod assembly in the utility model rotates backward and is folded relative to the rear bracket, the push rod assembly drives the rear support rod and the front support rod to rotate through the linkage rod, thereby realizing the folding and folding of the front bracket and the rear bracket, the forward flipping and folding of the footrest, and the folding and folding of the seat frame; the overall structure is novel and simple, not only can the purpose of quickly folding the baby carriage be achieved, but also the forward flipping and folding of the footrest will not protrude upward compared with the traditional backward flipping and folding. After folding, the overall structure is compact and the volume is smaller, which is convenient for carrying and storage.

[0015] 2. The seat frame of the utility model is a two-section structure including a front seat frame and a rear seat frame. When the frame is folded, the front seat frame is turned forward and downward by the linkage action of the footrest, and the rear seat frame is turned backward and downward under its own weight and the connection action of the cloth cover structure with other components. The two are folded into a V-shape with the opening downward. This design can further reduce the volume of the frame after folding.

[0016] 3. The utility model has a push handle rotatably connected to the push rod assembly to form a tri-fold vehicle. This design makes the structure more compact after the whole vehicle is folded, which is conducive to further reducing the volume of the whole vehicle after folding, making it easier to carry and store.

[0017] 4. The first locking mechanism and the second locking mechanism in the present invention adopt a linkage unlocking design, which has a simpler unlocking operation function, thereby achieving the purpose of folding the baby stroller simply and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0020] Figure 1 It is a schematic diagram of the side structure of the utility model when it is in an unfolded state;

[0021] Figure 2 It is a schematic diagram of the side section structure of the utility model when it is in an unfolded state;

[0022] Figure 3 It is a side structural schematic diagram of the utility model in the folding process;

[0023] Figure 4 It is a schematic diagram of the side section structure of the utility model in the folding process;

[0024] Figure 5 It is a schematic diagram of the side structure of the utility model when it is in a folded state;

[0025] Figure 6 It is a schematic diagram of the side section structure of the utility model when it is in a folded state;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the utility model in an unfolded state;

[0027] Figure 8 The utility model is a schematic diagram of the assembly structure of the footrest, the front support rod and the seat frame.

[0028] Among them: 1 seat frame; 101 front seat frame; 102 rear seat frame;

[0029] 2 footrest; 201 footrest connecting seat; 202 footrest bracket;

[0030] 3 putter sets;

[0031] 4 front bracket; 401 connecting rod;

[0032] 5 rear bracket;

[0033] 6 front support rod;

[0034] 7 rear support rod;

[0035] 8 linkage rods;

[0036] 9 Push handle. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described below in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application. It can be understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0038] 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 objects described and do not have any order or technical meaning. Therefore, the objects defined as "first", "second", etc. may explicitly or implicitly include one or more of the objects. In addition, "one" or "a" and similar words do not indicate a quantitative limitation, but indicate the existence of at least one, and "multiple" means no less than two.

[0039] In the description of the specification and claims of this application, if there are terms such as "connect", "install", "fix", "contain", etc., unless otherwise specified, they should be understood in a broad sense. For example, "connection" can be a separate connection or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a non-detachable connection or a detachable connection. For another example, "contain" does not necessarily mean complete containment of the whole. The concept also includes the partial containment of a part protruding from the outside. For those skilled in the art, the specific meanings of the aforementioned terms in this application can be understood according to the specific circumstances.

[0040] In the description of the specification and claims of this application, if there are terms such as "upper", "lower", "horizontal" and the like indicating an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the application clearly and simply, and does not indicate or imply that the elements referred to must have a specific direction, be constructed and operated in a specific orientation. These directional terms are relative concepts, used for relative description and clarification, and may change accordingly according to the change in the orientation of the components placed in the drawings. For example, if the device in the figure is turned over, the elements described as "below" other elements will be positioned "above" other elements.

[0041] In the description of the specification and claims of this application, if the term "if" is present, it can generally be interchanged with "when" or "at" or "in response to determining" or "in response to detecting", depending on the context.

[0042] In the description of the specification and claims of this application, if there is a "direction" of movement, including movement with a directional component, the term "in the direction" is not necessarily understood as movement only in that one direction. For those skilled in the art, the specific meaning of the aforementioned terms in this application can be understood according to the specific circumstances.

[0043] like Figures 1 to 8As shown, a folding frame structure of a child stroller includes a frame with an unfolded position and a folded position, and a locking mechanism for locking the frame in the unfolded position. The frame includes a seat frame 1, a footrest 2, and a push rod assembly 3, a front bracket 4, and a rear bracket 5 that are coaxially rotatably connected, wherein a front wheel assembly is installed below the front bracket 4, and a rear wheel assembly is installed below the rear bracket 5. A folding support rod is rotatably connected between the front bracket 4 and the rear bracket 5. The seat frame 1 includes a front seat frame 101 and a rear seat frame 102 that are rotatably connected, wherein the front seat frame 101 is rotatably connected to the front bracket 4; the rear portion of the footrest 2 is rotatably connected to the front end of the folding support rod and the front end of the front seat frame 101 respectively; and a linkage rod 8 is rotatably connected between the push rod assembly 3 and the folding support rod.

[0044] In this embodiment, the rear part of the front bracket 4 has a connecting rod 401 extending upward, and the rear end of the front seat frame 101 and the front end of the rear seat frame 102 are coaxially connected to the upper end of the connecting rod 401. When the seat frame 1 is unfolded, the front seat frame 101 and the rear seat frame 102 form a sitting part; when the seat frame 1 is folded, the front seat frame 101 is turned forward and downward by the linkage action of the footrest, and the rear seat frame 102 is turned backward and downward under its own weight and the cloth cover structure connection with other components. The seat frame 1 is folded into a V-shape with an opening downward. This design can further reduce the volume of the frame after folding.

[0045] In this embodiment, the folding support rod comprises a front support rod 6 and a rear support rod 7, the front portion of the front support rod 6 is rotatably connected to the front bracket 4, the rear end of the front support rod 6 is rotatably connected to the front end of the rear support rod 7, the rear end of the rear support rod 7 is rotatably connected to the rear bracket 5, and the rear portion of the footrest 2 is rotatably connected to the front end of the front support rod 6 of the folding support rod; the upper end of the linkage rod 8 is rotatably connected to the lower portion of the push rod assembly 3, and the lower end of the linkage rod 8 is rotatably connected to the middle portion of the rear support rod 7. When the frame is unfolded, the front support rod 6 and the rear support rod 7 are supported between the front bracket 4 and the rear bracket 5 with the front higher and the rear lower. When the frame is folded, the front support rod 6 and the rear support rod 7 are folded into a V-shape with the opening upward.

[0046] In this embodiment, the footrest 2 includes a footrest connecting seat 201 rotatably connected to the front seat frame 101 and the front support rod 6, and a footrest bracket 202 rotatably connected to the front side of the footrest connecting seat 201, and a footrest angle adjustment mechanism is provided between the footrest bracket 202 and the footrest connecting seat 201. Since the angle adjustment mechanism between the two rotating parts is a common technology in the art and has various types, it will not be specifically described or limited here.

[0047] In this embodiment, the upper end of the push rod assembly 3 is rotatably connected to a push handle 9 to form a tri-fold vehicle. This design makes the structure more compact after the whole vehicle is folded, which is conducive to further reducing the volume of the whole vehicle after folding, making it easier to carry and store.

[0048] In this embodiment, the locking mechanism includes a first locking mechanism arranged between the push handle 9 and the push rod assembly 3 and a second locking mechanism arranged between the push rod assembly 3 and the front bracket 4 or between the push rod assembly 3 and the rear bracket 5. Preferably, the first locking mechanism and the second locking mechanism are linkage unlocking structures. When the first locking mechanism is in the unlocked state, the second locking mechanism can be unlocked by flipping the push handle 9 forward. This design has a simpler unlocking operation function, which is convenient for achieving the purpose of folding the baby stroller easily and quickly. Since the linkage unlocking design between the first locking mechanism and the second locking mechanism is already available in the prior art and there are many types, no specific limitation or redundant description is made here.

[0049] In this embodiment, the unlocking component of the first locking mechanism is arranged on the push handle 9. The unlocking component can be an unlocking knob or an unlocking handle, etc.

[0050] When the frame is unfolded, the rotation connection point between the footrest 2 and the front seat frame 101 is located above and behind the rotation connection point between the footrest 2 and the front support rod 6; the rotation connection point between the front support rod 6 and the front bracket 4 is located below and behind the rotation connection point between the footrest and the front support rod.

[0051] When the frame is folded, the first locking mechanism is unlocked, and the push handle 9 is flipped forward to unlock the second locking mechanism; then the push rod assembly 3 is pressed down, and the push rod assembly 3 rotates backward relative to the rear bracket 5, and the push rod assembly 3 drives the rear support rod 7 and the front support rod 6 to rotate through the linkage rod 8, thereby realizing the folding and folding of the front bracket 4 and the rear bracket 5, the forward flipping and folding of the footrest 2, and the folding and folding of the seat frame 1.

[0052] The overall structure of the utility model is novel and simple, not only can the purpose of quickly folding the baby stroller be achieved, but also the footrest 2 does not protrude upwards when folded forward compared to the traditional backward folding. After folding, the overall structure is compact and the volume is smaller, which is convenient for carrying and storing.

[0053] As preferred embodiments of the present invention, in the description of this specification, the reference terms "preferred", "optional", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The above embodiments are only used to illustrate the detailed scheme of the present invention, and the present invention is not limited to the above detailed scheme, that is, it does not mean that the present invention must rely on the above detailed scheme to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A foldable frame structure of a child stroller, comprising a frame having an unfolded position and a folded position, and a locking mechanism for locking the frame in the unfolded position, wherein the frame comprises a seat frame, a footrest, and a push rod assembly, a front bracket and a rear bracket connected in a coaxial rotation, wherein a foldable support rod is rotatably connected between the front bracket and the rear bracket, and characterized in that: The seat frame includes a front seat frame and a rear seat frame that are rotatably connected, and the front seat frame is rotatably connected to the front bracket; the rear portion of the footrest is rotatably connected to the front end of the folding support rod and the front end of the front seat frame respectively; a linkage rod is rotatably connected between the push rod assembly and the folding support rod; when the push rod assembly rotates backward and is folded relative to the rear bracket, the push rod assembly drives the folding support rod to fold through the linkage rod, thereby realizing the folding and folding of the front bracket and the rear bracket, the forward flipping and folding of the footrest, and the folding and folding of the seat frame.

2. A folding frame structure for a child stroller according to claim 1, characterized in that: The rear portion of the front bracket is provided with a connecting rod extending upward, and the rear end of the front seat frame and the front end of the rear seat frame are coaxially connected to the upper end of the connecting rod; when the seat frame is unfolded, the front seat frame and the rear seat frame form a sitting portion; when the seat frame is folded, the front seat frame flips forward and downward, and the rear seat frame flips backward and downward, and the seat frame folds into a V-shape with the opening downward.

3. A folding frame structure for a child stroller according to claim 2, characterized in that: The folding strut includes a front strut and a rear strut, the front portion 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, and the rear portion of the footrest is rotatably connected to the front end of the front strut of the folding strut; the upper end of the linkage rod is rotatably connected to the lower portion of the push rod assembly, and the lower end of the linkage rod is rotatably connected to the rear strut.

4. A folding frame structure for a child stroller according to claim 3, characterized in that: When the frame is unfolded, the rotation connection point between the footrest and the front seat frame is located above and behind the rotation connection point between the footrest and the front support rod; the rotation connection point between the front support rod and the front bracket is located below and behind the rotation connection point between the footrest and the front support rod.

5. The folding frame structure of a child stroller according to claim 3, characterized in that: The lower end of the linkage rod is rotatably connected to the middle part of the rear support rod. When the frame is folded, the front support rod and the rear support rod are folded into a V-shape with the opening upward.

6. The folding frame structure of a child stroller according to claim 1, characterized in that: The footrest comprises a foot connection seat rotatably connected to the front seat frame and the folding support rod, and a foot support rotatably connected to the front side of the foot connection seat, and a foot angle adjustment mechanism is provided between the foot support and the foot connection seat.

7. The folding frame structure of a child stroller according to claim 1, characterized in that: The upper end of the push rod assembly is rotatably connected with a push handle.

8. The folding frame structure of a child stroller according to claim 7, characterized in that: The locking mechanism comprises a first locking mechanism arranged between the push handle and the push rod assembly and a second locking mechanism arranged between the push rod assembly and the front bracket or between the push rod assembly and the rear bracket.

9. A folding frame structure for a child stroller according to claim 8, characterized in that: The first locking mechanism and the second locking mechanism are a linkage unlocking structure. When the first locking mechanism is in an unlocked state, the second locking mechanism can be unlocked by flipping the push handle forward.

10. A folding frame structure for a child stroller according to claim 8 or 9, characterized in that: The unlocking component of the first locking mechanism is arranged on the push handle.

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