Folding baby stroller

Abstract

A frame of the folding stroller comprises a push rod, a front support, a rear support, a first linkage rod, a second linkage rod and a third linkage rod, the push rod, the front support and the rear support are rotationally connected, the upper end of the first linkage rod is rotationally connected with the push rod, and the lower end of the first linkage rod is rotationally connected with the upper end of the second linkage rod. The lower end of the second linkage rod is rotationally connected with the rear support, the front end of the third linkage rod is rotationally connected with the front support, and the rear end of the third linkage rod is rotationally connected with the first linkage rod. When the frame is folded, the push rod rotates backwards to be folded on the rear side of the rear support, and the front support is folded on the front side of the front support under the linkage action of the first linkage rod, the second linkage rod and the third linkage rod. 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 the technical field of baby strollers, in particular to a folding baby stroller. Background Art

[0002] The baby stroller in the prior art is a tool vehicle designed to facilitate outdoor activities for infants. It is a means of transportation for babies to go out and is even a necessity for taking care of infants. With the increasing living standards, the foldable baby stroller among baby strollers has more and more usage scenarios in life due to its convenient carrying. However, the linkage structure of the baby strollers on the market is relatively complex, and there is a problem that it still occupies a large space after folding. Therefore, there is a need for a baby stroller with a better folding effect and more space-saving for storage, which is convenient for use and carrying. Summary of the Invention

[0003] The purpose of the utility model is to provide a folding baby stroller with a novel and simple structure, which can realize the rapid folding of the whole vehicle. 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 folding baby stroller, including a frame having a deployed state and a folded state, and a locking mechanism for locking the frame in the deployed state. The frame includes a push rod, a front bracket and a rear bracket which are rotatably connected. The frame further includes a first linkage rod, a second linkage rod and a third linkage rod. The upper end of the first linkage rod is rotatably connected to the push rod, the lower end of the first linkage rod is rotatably connected to the upper end of the second linkage rod, the lower end of the second linkage rod is rotatably connected to the rear bracket, the front end of the third linkage rod is rotatably connected to the front bracket, and the rear end of the third linkage rod is rotatably connected to the first linkage rod. When the frame is folded, the push rod rotates backward and folds behind the rear bracket, and the front bracket folds in front of the front bracket under the linkage action of the first linkage rod, the second linkage rod and the third linkage rod, thereby completing the folding of the whole vehicle.

[0005] As a preferred technical solution, the upper end of the front bracket, the upper end of the rear bracket and the lower end of the push rod are rotatably connected coaxially.

[0006] As a preferred technical solution, the first linkage rod and the second linkage rod are located behind the rear bracket, and the rotation connection point between the third linkage rod and the first linkage rod is above the rotation connection point between the second linkage rod and the first linkage rod; the third linkage rod is arranged obliquely in the front-rear direction, and the rotation connection point between the third linkage rod and the front bracket is in front of and above the rotation connection point between the third linkage rod and the first linkage rod.

[0007] As a preferred technical solution, the upper part of the front bracket has a transverse shaft rod, and the front end of the third linkage rod is sleeved and rotatably matched with the transverse shaft rod through a connecting seat.

[0008] As a preferred technical solution, a push handle that can be folded and retracted relative to it is installed at the upper end of the push rod.

[0009] As a preferred technical solution, the locking mechanism includes a first locking mechanism arranged between the push handle and the push rod and a second locking mechanism arranged between the second linkage rod and the rear bracket. Preferably, the first locking mechanism and the second locking mechanism are a linkage unlocking structure. When the first locking mechanism is in the unlocked state, flipping the push handle forward can release the locking of the second locking mechanism. Among them, the unlocking component of the first locking mechanism is preferably arranged on the push handle.

[0010] As a preferred technical solution, the vehicle frame further includes a front armrest, and the rear end of the front armrest is installed at the rotation connection part at the upper end of the first linkage rod. When the vehicle frame is folded, the front armrest is retracted relative to the push rod under the drive of the first linkage rod.

[0011] As a preferred technical solution, the vehicle frame further includes a backrest frame and a mounting frame. The front part of the mounting frame is rotatably connected to the rear bracket, and the bottom of the backrest frame is rotatably sleeved with the rear part of the mounting frame through a sleeve.

[0012] As a preferred technical solution, a backrest gear adjustment mechanism is arranged between the backrest frame and the first linkage rod.

[0013] As a preferred technical solution, the backrest gear adjustment mechanism includes an adjustment seat arranged on the backrest frame and slidable relative to it and a clamping seat arranged on the first linkage rod and having a plurality of clamping grooves for the clamping part of the adjustment seat to be clamped and matched; a reset member that always presses the clamping part of the adjustment seat towards the clamping groove is installed between the adjustment seat and the backrest frame.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The structure of the present utility model is novel and simple. When the vehicle frame is folded, the push rod rotates backward and retracts to the rear side of the rear bracket, and the front bracket retracts to the front side of the front bracket under the linkage action of the first linkage rod, the second linkage rod and the third linkage rod, which can realize the rapid folding of the whole vehicle. After folding, the overall structure is compact and the volume is smaller, which is convenient for going out and carrying and storing.

[0016] 2. The rear end of the front armrest in the present utility model is installed at the rotation connection part at the upper end of the first linkage rod. When the vehicle frame is folded, the front armrest is automatically retracted relative to the push rod under the drive of the first linkage rod, with simple installation, realizing the automatic folding of the front armrest.

[0017] 3. The installation method of the backrest frame in the present utility model is relatively novel, and a backrest gear adjustment mechanism is provided between the backrest frame and the first linkage rod. The backrest gear adjustment mechanism can adjust the use angle of the backrest frame by sliding the adjustment seat on the backrest frame to make it withdraw from or engage with different card slots on the card seat of the first linkage rod. The structure is novel and simple, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. The following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] The structures, proportions, sizes, etc. shown in the 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 limited conditions under which the present utility model can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of 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 in the present utility model.

[0020] Figure 1 It is a three-dimensional structure schematic diagram of a certain angle when the present utility model is in the unfolded state;

[0021] Figure 2 It is a three-dimensional structure schematic diagram of another angle when the present utility model is in the unfolded state;

[0022] Figure 3 It is a side structure schematic diagram when the present utility model is in the unfolded state;

[0023] Figure 4 It is a side cross-sectional schematic diagram when the present utility model is in the unfolded state;

[0024] Figure 5 It is a side structure schematic diagram during the folding process of the present utility model; (the backrest frame is not drawn)

[0025] Figure 6 It is a side cross-sectional schematic diagram during the folding process of the present utility model; (the backrest frame is not drawn)

[0026] Figure 7 It is a side structure schematic diagram when the present utility model is in the folded state; (the backrest frame is not drawn)

[0027] Figure 8 It is Figure 2 a partial enlarged view of.

[0028] Wherein: 1 push rod; 2 front bracket; 21 horizontal shaft rod; 3 rear bracket; 4 first linkage rod; 5 second linkage rod; 6 third linkage rod; 61 connection seat; 7 front wheel assembly; 8 rear wheel assembly; 9 push handle; 10 front armrest; 11 backrest frame; 12 mounting bracket; 13 backrest gear adjustment mechanism; 131 adjustment seat; 132 clamping seat Specific implementation manner

[0029] To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application. It can be understood that, without conflict, some technical means described in the various embodiments herein may be mutually replaced or combined.

[0030] In the description of the specification and claims of the present 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. And, words such as "one" or "a" do not indicate a quantity limitation, but rather indicate that there is at least one, and "multiple" means not less than two.

[0031] In the description of the specification and claims of the present application, if there are terms such as "connection", "installation", "fixation", "accommodation", etc., without special explanation, they should all be understood in a broad sense. For example, "connection" 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. Again, for example, "accommodation" does not necessarily mean that the whole is completely accommodated, and this concept also includes a situation where a part protrudes outside for partial accommodation. For those skilled in the art, the specific meanings of the foregoing terms in the present application can be understood according to specific circumstances.

[0032] 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 referred 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.

[0033] In the description of the specification and claims of the present application, if there is the term "if", depending on the context, it can usually be interchanged with "when", "while", "in response to determining", or "in response to detecting".

[0034] 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 direction component, it is not necessarily to understand the term "in the direction of" as only motion 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.

[0035] As Figures 1 to 8 shown, a folding baby stroller includes a frame having a deployed state and a folded state, and a locking mechanism for locking the frame in the deployed state. The frame includes a push rod 1, a front bracket 2, and a rear bracket 3 that are rotatably connected. The frame further includes a first linkage rod 4, a second linkage rod 5, and a third linkage rod 6. The upper end of the first linkage rod 4 is rotatably connected to the push rod 1, the lower end of the first linkage rod 4 is rotatably connected to the upper end of the second linkage rod 5, the lower end of the second linkage rod 5 is rotatably connected to the rear bracket 3, the front end of the third linkage rod 6 is rotatably connected to the front bracket 2, and the rear end of the third linkage rod 6 is rotatably connected to the first linkage rod 4.

[0036] In this embodiment, the upper ends of the front bracket 2, the upper ends of the rear bracket 3, and the lower end of the push rod 1 are rotatably connected coaxially; a front wheel assembly 7 is installed below the front bracket 2, and a rear wheel assembly 8 is installed below the rear bracket 3. This is a conventional frame body structure in the technical field, so no specific limitations and elaborations are made here.

[0037] In this embodiment, the first linkage rod 4 and the second linkage rod 5 are located at the rear side of the rear bracket 2. The rotation connection point between the third linkage rod 6 and the first linkage rod 4 is above the rotation connection point between the second linkage rod 5 and the first linkage rod 4. The third linkage rod 6 is arranged obliquely in the front-back direction, and the rotation connection point between the third linkage rod 6 and the front bracket 2 is in front of and above the rotation connection point between the third linkage rod 6 and the first linkage rod 4. Preferably, the upper part of the front bracket 2 has a cross shaft rod 21, and the front end of the third linkage rod 6 is sleeved and rotationally matched with the cross shaft rod 21 through a connection seat 61.

[0038] In this embodiment, a push handle 9 that can be folded and retracted relative to it is installed at the upper end of the push rod 1. This is a conventional frame body structure in this technical field, so no specific limitations or descriptions will be given here.

[0039] In this embodiment, the locking mechanism includes a first locking mechanism arranged between the push handle 9 and the push rod 1 and a second locking mechanism arranged between the second linkage rod 5 and the rear bracket 3. Preferably, the first locking mechanism and the second locking mechanism are a linkage unlocking structure. When the first locking mechanism is in the unlocked state, flipping the push handle forward can release the locking of the second locking mechanism. This design has a more convenient unlocking operation function, facilitating the purpose of simply and quickly folding the baby stroller. Since the linkage unlocking design between the above first locking mechanism and the second locking mechanism already exists in the prior art and there are various types, no specific limitations or descriptions will be given here.

[0040] Among them, the unlocking component of the first locking mechanism is preferably arranged on the push handle. The unlocking component can be an unlocking pinch handle or an unlocking pull handle, etc. Since the unlocking component is a common technique in the prior art and there are various types, no specific limitations or descriptions will be given here.

[0041] In this embodiment, the stroller frame further includes a front armrest 10, and the rear end of the front armrest 10 is installed at the rotation connection part at the upper end of the first linkage rod 4. Preferably, when the stroller frame is unfolded, the installation point of the front armrest 10 and the first linkage rod 4 is behind and above the rotation connection point between the first linkage rod 4 and the push rod 1. When the stroller frame is folded, the front armrest 10 is driven by the first linkage rod 4 to flip forward and fold relative to the push rod. This design makes the installation of the front armrest 10 simple and realizes the automatic folding of the front armrest 10, which is beneficial to achieving the purpose of quickly folding the baby stroller.

[0042] In this embodiment, the vehicle frame further includes a backrest frame 11 and a U-shaped mounting frame 12 with an opening facing forward. The front part of the mounting frame 12 is rotatably connected to the rear bracket 3, and the bottom of the backrest frame 11 is rotatably sleeved with the rear part of the mounting frame 12 through a sleeve. Preferably, a backrest gear adjustment mechanism 13 is provided between the backrest frame 11 and the first linkage rod 4. Among them, the backrest gear adjustment mechanism 13 includes an adjustment seat 131 provided on the backrest frame 11 and slidable relative to it, and a clamping seat 132 provided on the first linkage rod 4 and having a plurality of grooves for the clamping part of the adjustment seat 131 to be clamped and matched; a reset member is installed between the adjustment seat 131 and the backrest frame 11 to always press its clamping part towards the groove. The backrest gear adjustment mechanism 13 can adjust the use angle of the backrest frame 11 by sliding the adjustment seat 131 on the backrest frame 11 to make it withdraw from or engage with different grooves of the clamping seat 132 on the first linkage rod 4. The structure is novel and simple, and the operation is convenient.

[0043] When the vehicle frame is folded, the locking of the first locking mechanism is released, then the push handle 9 is flipped to be folded relative to the push rod 1, and then the push rod 1 is pressed down to rotate backward and be folded behind the rear bracket 3. The front bracket 2 is folded in front of the front bracket 2 under the linkage action of the first linkage rod 4, the second linkage rod 5 and the third linkage rod 6. The structure of the present invention is novel and concise, the whole vehicle can be quickly folded, the overall structure is compact after folding, and the volume is smaller, which is convenient for going out and storage.

[0044] As a preferred implementation of the present invention, in the description of this specification, the description of reference terms such as "preferred" and "optional" means that the specific features, structures, materials or characteristics described in connection with this embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expression 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 a suitable manner in any one or more embodiments or examples.

[0045] 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 the raw materials 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 disclosure scope of the present invention.

Claims

1. A folding baby stroller, comprising a frame having an unfolded state and a folded state, and a locking mechanism for locking the frame in the unfolded state, wherein the frame comprises a push rod, a front bracket and a rear bracket which are rotatably connected, and is characterized in that: The frame further includes a first linkage rod, a second linkage rod, and a third linkage rod. The upper end of the first linkage rod is rotatably connected to the push rod, the lower end of the first linkage rod is rotatably connected to the upper end of the second linkage rod, the lower end of the second linkage rod is rotatably connected to the rear bracket, the front end of the third linkage rod is rotatably connected to the front bracket, and the rear end of the third linkage rod is rotatably connected to the first linkage rod. When the frame is folded, the push rod rotates backward and retracts behind the rear bracket, and the front bracket retracts in front of the front bracket under the linkage action of the first linkage rod, the second linkage rod, and the third linkage rod, thus completing the folding of the whole vehicle.

2. A foldable baby stroller according to claim 1, characterized in that: The upper end of the front bracket, the upper end of the rear bracket, and the lower end of the push rod are rotatably connected coaxially.

3. A foldable baby stroller according to claim 1, characterized in that: The upper part of the front bracket has a transverse shaft rod, and the front end of the third linkage rod is sleeved and rotatably fitted with the transverse shaft rod through a connecting seat.

4. A foldable baby stroller according to claim 1 or 2, characterized in that: A push handle that can be folded and retracted relative to it is installed at the upper end of the push rod.

5. A foldable baby stroller according to claim 4, characterized in that: The locking mechanism includes a first locking mechanism disposed between the push handle and the push rod and a second locking mechanism disposed between the second linkage rod and the rear bracket.

6. A folding baby stroller according to claim 5, wherein: The first locking mechanism and the second locking mechanism are a linkage unlocking structure. When the first locking mechanism is in the unlocked state, flipping the push handle forward can release the locking of the second locking mechanism.

7. A foldable baby stroller according to claim 1, characterized in that: The frame further includes a front armrest, and the rear end portion of the front armrest is installed at the rotational connection portion of the upper end of the first linkage rod. When the frame is folded, the front armrest retracts relative to the push rod under the drive of the first linkage rod.

8. A folding baby stroller according to claim 1, wherein: The frame further includes a backrest frame and a mounting frame. The front part of the mounting frame is rotatably connected to the rear bracket, and the bottom of the backrest frame is rotatably sleeved with the rear part of the mounting frame through a sleeve.

9. The foldable baby stroller according to claim 8, characterized in that: A backrest gear adjustment mechanism is provided between the backrest frame and the first linkage rod.

10. A foldable baby stroller according to claim 9, wherein: The backrest gear adjustment mechanism includes an adjustment seat disposed on the backrest frame and slidable relative to it, and a clamping seat disposed on the first linkage rod and having a plurality of slots for the clamping portion of the adjustment seat to be clamped and engaged. A reset member that always presses the clamping portion of the adjustment seat against the slot is installed between the adjustment seat and the backrest frame.

Images