CN111891205A

CN111891205A - Children's barrow

Info

Publication number: CN111891205A
Application number: CN202010881207.XA
Authority: CN
Inventors: 蔡守进; 赖春华
Original assignee: Jiangsu Little Dinosaur Children Products Group Co ltd
Current assignee: Jiangsu Little Dinosaur Children Products Group Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-11-06

Abstract

The invention relates to the technical field of children products and discloses a stroller. The stroller includes a frame having an expanded state and a collapsed state. The frame includes primary shaft, front wheel branch, push rod subassembly, rear wheel support, first connecting rod and coupling assembling. Connecting pieces are fixed at two ends of the first shaft. The upper end of the front wheel supporting rod is rotatably connected with the lower end of the push rod component through a first shaft. The rear wheel support comprises two rear wheel supporting rods arranged at an angle, and the upper ends of the rear wheel supporting rods are respectively perpendicular to the first shaft and rotatably connected to the two connecting pieces. First connecting rod both ends are rotated and are connected with the slider, slider and rear wheel branch sliding connection, and coupling assembling's one end is connected in first connecting rod, and the other end is connected in front wheel branch and/or push rod subassembly, and when front wheel branch rotated with push rod subassembly relatively, coupling assembling can drive first connecting rod and slide along rear wheel branch. The invention reduces the weight of the baby stroller, reduces the volume of the folded baby stroller, and facilitates the folding and unfolding of the baby stroller.

Description

Children's barrow

Technical Field

The invention relates to the technical field of children products, in particular to a stroller.

Background

Current stroller designs are generally collapsible for portability. However, the frame of the existing stroller is provided with two front wheels and two rear wheels, the frame is provided with two front wheel supporting rods which are respectively connected with the two front wheels, and two rear wheel supporting rods which are respectively connected with the two rear wheels, so that the structure is relatively complex, the manufacturing cost is high, the stroller is inconvenient to operate because the stroller needs to be folded one by joints, the size is still large after being folded, a large space is occupied, the portability is reduced, and an improved space exists.

Based on this, there is a need for a stroller that solves the above mentioned problems.

Disclosure of Invention

The invention aims to provide a child stroller, which simplifies the frame structure of the stroller, reduces the manufacturing cost, lightens the weight of the stroller and enables the volume of the folded stroller frame to be smaller.

In order to achieve the purpose, the invention adopts the following technical scheme:

a stroller comprising a frame having an expanded state and a collapsed state, a front wheel assembly disposed at a front portion below the frame, a rear wheel assembly disposed at a rear portion below the frame, and a locking mechanism for locking the frame in the expanded state, the frame comprising:

the connecting piece is fixed at two ends of the first shaft;

the lower end of the front wheel strut is connected with the front wheel assembly;

the lower end of the push rod component is rotatably connected to the upper end of the front wheel supporting rod through the first shaft;

the rear wheel support comprises two rear wheel supporting rods arranged at an angle, the lower ends of the rear wheel supporting rods are connected with the rear wheel assembly, and the upper ends of the two rear wheel supporting rods are respectively connected to the two connecting pieces in a rotating mode around an axis perpendicular to the first shaft;

the two ends of the first connecting rod are rotatably connected with sliding pieces, the sliding pieces are connected with the rear wheel supporting rods in a sliding mode, and the sliding pieces can slide along the extending direction of the rear wheel supporting rods;

coupling assembling, coupling assembling's one end connect in first connecting rod, the other end connect in front wheel branch and/or push rod assembly works as front wheel branch with when push rod assembly rotates relatively, coupling assembling can drive first connecting rod is followed rear wheel branch slides.

Preferably, the connecting assembly comprises a second connecting rod and a third connecting rod, one end of the second connecting rod is rotatably connected to the front wheel strut, and one end of the third connecting rod is rotatably connected to the push rod assembly; a support seat is arranged in the middle of the first connecting rod, and a second shaft parallel to the first shaft is arranged on the support seat; the other end of the second connecting rod is rotatably connected to the other end of the third connecting rod through the second shaft.

Preferably, the push rod subassembly includes sleeve pipe, locking piece and push rod, the sheathed tube lower extreme rotate connect in front wheel branch, sheathed tube upper end cover is located the one end of push rod, just the push rod can be followed the sheathed tube extending direction slides, the other end of push rod is equipped with the handle, the locking piece is used for the locking the push rod is in position in the sleeve pipe.

Preferably, the stroller further comprises a seat assembly, the seat assembly comprises a seat connector and a seat body, the seat connector is disposed on the frame, and the seat body is detachably connected to the seat connector.

Preferably, the saddle body comprises a back rest and a seat frame, the lower end of the back rest is rotatably connected with the rear end of the seat frame, and the seat frame is detachably connected with the saddle connecting piece.

Preferably, the seat body further includes an armrest, and the armrest, the back rest frame, and the seat frame are coaxially rotatably connected.

Preferably, the saddle connector comprises a receiving plate and a fourth connecting rod, a protruding portion is convexly arranged at the bottom of the receiving plate, the tail end of the protruding portion is rotatably connected to the end portion of the push rod assembly, one end of the fourth connecting rod is rotatably connected to the bottom of the receiving plate, and the other end of the fourth connecting rod is rotatably connected to the front wheel supporting rod.

Preferably, the upper end of the backrest frame is rotatably connected with one end of a first canopy rod and one end of a second canopy rod, when the frame is in the unfolded state, the other end of the first canopy rod extends towards the front of the frame, and the other end of the second canopy rod extends towards the rear of the frame.

Preferably, the upper end of the backrest frame is detachably connected with a hood support, and the first hood rod and the second hood rod are rotatably connected with the hood support.

Preferably, the sliding part comprises a sliding sleeve, and the sliding sleeve is sleeved on the rear wheel support rod.

The invention has the beneficial effects that: the frame has two rear wheel branch and a front wheel branch, and front wheel branch rotates to be connected in the primary shaft, and the primary shaft both ends are connected with two connecting pieces, and two rear wheel branches can rotate around the axis of perpendicular to primary shaft and connect in two connecting pieces, connect through first connecting rod between two rear wheel branches, and two sliders are connected in the rotation of first connecting rod both ends, and the extension direction that the slider can follow rear wheel branch slides. One end of the connecting component is connected with the first connecting rod, and the other end of the connecting component is connected with the front wheel supporting rod and/or the push rod component. When the frame is required to be folded, the front wheel supporting rod and the push rod assembly are rotated, the connecting assembly can drive the first connecting rod to slide downwards along the rear wheel supporting rod, and the two rear wheel supporting rods are constrained by the first connecting rod to be close to each other. When needs expand the frame, rotate front wheel branch and push rod subassembly, make the two keep away from each other, coupling assembling can drive first connecting rod and go up the slide along rear wheel branch, and two rear wheel branches receive the restraint of first connecting rod and keep away from each other, and until front wheel branch is the same with push rod subassembly's extending direction, the frame is in the state of expanding, and locking mechanical system will lock the position of each mechanism of frame. The invention reduces the number of connecting rods between the frame and the wheels, simplifies the frame structure of the cart, reduces the manufacturing cost, lightens the weight of the cart, and enables the volume of the folded frame to be smaller. Through the rotation of front wheel branch and push rod subassembly for first connecting rod slides on rear wheel branch, thereby makes the frame of children's shallow convert fold condition to or convert fold condition to the state of unfolding from the state of unfolding, has simplified the operation when folding and unfolding children's shallow.

Drawings

Fig. 1 is a schematic structural view of a stroller according to an embodiment of the present invention;

FIG. 2 is a side view of a stroller provided in accordance with an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a structural schematic view of a folding process of a seat body for a vehicle provided in an embodiment of the present invention;

fig. 5 is a schematic structural diagram illustrating a folding process of the stroller according to the embodiment of the present invention;

fig. 6 is a schematic structural view of the stroller in a folded state according to the embodiment of the present invention.

In the figure:

10. a frame; 101. a front wheel assembly; 1011. a front wheel; 1012. a T-shaped frame; 102. a rear wheel assembly; 1021. a brake pedal; 1022. a rear wheel;

1. a front wheel strut;

21. a connecting member;

3. a push rod assembly; 31. a sleeve; 32. a push rod; 33. a handle;

4. a rear wheel strut;

5. a first link; 51. a slider; 52. a supporting seat;

6. a second link;

7. a third link;

8. a seat attachment; 81. a bearing plate; 82. a fourth link; 83. a projection;

9. a seat body; 91. a backrest frame; 92. a seat frame; 93. a first hood bar; 94. a second hood bar; 95. a hood support; 96. a handrail.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The stroller in the prior art is relatively complex in structure and high in manufacturing cost, joints need to be folded one by one when the stroller is folded, operation is inconvenient, the size is still large after the stroller is folded, large space is occupied, portability is reduced, and improved space exists.

In order to solve the above problems, the present embodiment provides a stroller, which simplifies the frame structure of the stroller, reduces the manufacturing cost, reduces the weight of the stroller, enables the volume of the stroller after being folded to be smaller, and simplifies the operation of folding and unfolding the stroller.

Specifically, as shown in fig. 1-6, the stroller includes a frame 10 having an expanded state and a collapsed state, a front wheel assembly 101 disposed at a lower front portion of the frame 10, a rear wheel assembly 102 disposed at a lower rear portion of the frame 10, and a locking mechanism for locking the frame 10 in the expanded state. Further, the frame 10 includes a first axle, a front wheel strut 1, a push rod assembly 3, a rear wheel bracket, a first link 5, and a connecting assembly. Connecting pieces 21 are fixed to both ends of the first shaft. The lower end of the front wheel strut 1 is connected with a front wheel assembly 101. The lower end of the push rod component 3 is rotatably connected with the upper end of the front wheel supporting rod 1 through a first shaft. The rear wheel support comprises two rear wheel supporting rods 4 which are arranged at an angle, the lower ends of the rear wheel supporting rods 4 are connected with the rear wheel assembly 102, and the upper ends of the two rear wheel supporting rods 4 are respectively connected with the two connecting pieces 21 in a rotating mode around the axis perpendicular to the first shaft. The first link 5 is rotatably connected with a sliding member 51 at both ends, the sliding member 51 is slidably connected with the rear wheel strut 4, and the sliding member 51 can slide along the extending direction of the rear wheel strut 4. Coupling assembling's one end is connected in first connecting rod 5, and the other end is connected in front wheel branch 1 and/or push rod assembly 3, and when front wheel branch 1 rotated with push rod assembly 3 relatively, coupling assembling can drive first connecting rod 5 and slide along rear wheel branch 4. The frame 10 is provided with two rear wheel struts 4 and a front wheel strut 1, the front wheel strut 1 is rotatably connected to a first shaft, two connecting pieces 21 are connected to two ends of the first shaft, the two rear wheel struts 4 can be rotatably connected to the two connecting pieces 21 around an axis perpendicular to the first shaft, the two rear wheel struts 4 are connected through a first connecting rod 5, two sliding pieces 51 are rotatably connected to two ends of the first connecting rod 5, and the sliding pieces 51 can slide along the extension direction of the rear wheel struts 4. One end of the connecting component is connected with the first connecting rod 5, and the other end is connected with the front wheel supporting rod 1 and/or the push rod component 3. When frame 10 is folded to needs, rotate front wheel branch 1 and push rod assembly 3, coupling assembling can drive first connecting rod 5 and follow rear wheel branch 4 gliding, and two rear wheel branches 4 receive the restraint of first connecting rod 5 to be close to each other. When the frame 10 needs to be unfolded, the front wheel supporting rod 1 and the push rod assembly 3 are rotated to be away from each other, the connecting assembly can drive the first connecting rod 5 to slide upwards along the rear wheel supporting rod 4, the two rear wheel supporting rods 4 are restrained by the first connecting rod 5 to be away from each other until the extending directions of the front wheel supporting rod 1 and the push rod assembly 3 are the same, the frame 10 is in an unfolded state, and the locking mechanism locks the positions of all mechanisms of the frame 10. The children's shallow of this embodiment reduces the quantity of the connecting rod between frame 10 and the wheel, has simplified the frame 10 structure of shallow, has reduced manufacturing cost, has alleviateed shallow weight, can make the volume after frame 10 is folding again littleer, has improved practicality and portable degree. The first connecting rod 5 slides on the rear wheel support 4 through the rotation of the front wheel support 1 and the push rod assembly 3, so that the frame 10 of the baby stroller is converted from the unfolding state to the folding state or from the folding state to the unfolding state, and the operation of the baby stroller in folding and unfolding is simplified.

Preferably, the connecting assembly comprises a second link 6 and a third link 7. One end of the second connecting rod 6 is rotatably connected to the front wheel supporting rod 1, and one end of the third connecting rod 7 is rotatably connected to the push rod component 3. The middle part of the first connecting rod 5 is provided with a supporting seat 52, and a second shaft parallel to the first shaft is arranged on the supporting seat 52. The other end of the second link 6 is rotatably connected to the other end of the third link 7 through a second shaft. When the frame 10 needs to be folded, the front wheel supporting rod 1 and the push rod assembly 3 are rotated, the second connecting rod 6 and the third connecting rod 7 can push the first connecting rod 5 to slide downwards along the rear wheel supporting rod 4, and the two rear wheel supporting rods 4 are constrained by the first connecting rod 5 to be close to each other. When the frame 10 needs to be unfolded, the front wheel support rod 1 and the push rod assembly 3 are rotated in opposite directions to be away from each other, the second connecting rod 6 and the third connecting rod 7 can pull the first connecting rod 5 to slide upwards along the rear wheel support rod 4, the two rear wheel support rods 4 are restrained by the first connecting rod 5 to be away from each other until the extending directions of the front wheel support rod 1 and the push rod assembly 3 are the same, the frame 10 is in an unfolded state, and the locking mechanism locks the positions of all mechanisms of the frame 10. By adopting the structural form of the second connecting rod 6 and the third connecting rod 7, the structure of the connecting component can be simplified, the production process of the stroller is simplified, and the weight of the stroller is further reduced. In other embodiments, only the second link 6 or the third link 7 may be provided to drive the first link 5 to slide along the rear wheel strut 4, or an air cylinder or a hydraulic cylinder may be fixed to the frame 10, and an output end of the air cylinder or the hydraulic cylinder is connected to the first link 5 to drive the first link 5 to slide along the rear wheel strut 4, which is not limited herein.

In the present embodiment, the terms relating to the front, rear, up, down, etc. are defined when the frame 10 is in the deployed position, the front wheel strut 1 and the front wheel assembly 101 are located at the front, the rear wheel strut 4 and the rear wheel assembly 102 are located at the rear, the push rod assembly 3 is located at the upper position, and the front wheel assembly 101 and the rear wheel assembly 102 are located at the lower position.

Preferably, the front wheel assembly 101 includes two front wheels 1011 and a T-frame 1012. The vertical rod of the T-shaped frame 1012 is coaxially connected with the lower end of the front wheel supporting rod 1, and two front wheels 1011 are connected with two ends of the horizontal rod of the T-shaped frame 1012. The T-shaped frame 1012 is arranged, so that the number of the front wheel supporting rods 1 is reduced, two front wheels 1011 can be connected, the stability of the frame 10 when the stroller is pushed is guaranteed, and the practicability is improved. The cross bar of the T-shaped frame 1012 is perpendicular to the forward direction of the stroller.

In this embodiment, rotate between front wheel 1011 and the T type frame 1012 and be connected, specifically be, the pivot level setting of front wheel 1011 is on the front wheel connecting rod, and the vertical setting of front wheel connecting rod rotates between front wheel connecting rod and the T type frame 1012 and is connected, can be when folding frame 10, rotate front wheel 1011 to be parallel with the horizontal pole of T type frame 1012, reduces folding back frame 10's area occupied, does benefit to moreover and turns to when promoting children's shallow. In other embodiments, the front wheel assembly 101 may further include only one front wheel 1011, and the front wheel 1011 is directly rotatably connected to the lower end of the front wheel strut 1, which is not limited herein.

In this embodiment, two rear wheel struts 4 are connected to one rear wheel assembly 102, respectively, and each rear wheel assembly 102 includes a brake pedal 1021 and a rear wheel 1022. When the stroller is pushed, the rear wheel 1022 starts to rotate, and when the stroller needs to be stopped, the operator steps on the brake pedal 1021 to decelerate the rear wheel 1022 until the rotation is stopped. The connection between the brake pedal 1021 and the rear wheel 1022 is conventional and will not be described herein.

Preferably, as shown in fig. 1, push rod assembly 3 includes a sleeve 31, a lock, and a push rod 32, and when pushing the stroller, frame 10 is in the unfolded state, and the operator pushes the stroller through push rod assembly 3. The lower end of the sleeve 31 is rotatably connected to the front wheel strut 1, the upper end of the sleeve 31 is sleeved at one end of the push rod 32, the push rod 32 can slide along the extending direction of the sleeve 31, the other end of the push rod 32 is provided with a handle 33, and the locking piece is used for locking the position of the push rod 32 in the sleeve 31. When frame 10 is in the folded state, the locking action of the locking piece on push rod assembly 3 is released, push rod 32 is pushed into sleeve 31, the length of push rod assembly 3 is shortened, and the volume of frame 10 after being folded is smaller. When frame 10 is in the unfolded state, the locking member can lock the position of push rod 32 in sleeve 31, and push rod 32 is pulled out of sleeve 31, so that the length of push rod assembly 3 is prolonged, and the stroller is convenient to push. It will be appreciated that a lock, the structure of which is prior art and will not be described in detail herein, can lock the position of push rod 32 within sleeve 31 at any length of push rod assembly 3.

In this embodiment, when frame 10 is in the folding state, the locking effect of the locking piece on push rod assembly 3 is released, and in the process that push rod 32 is pushed into sleeve 31, the unlocking structure of the locking mechanism can be triggered to unlock the locking effect of the locking mechanism between front wheel strut 1 and push rod assembly 3, so that the operation during folding frame 10 is reduced, and the practicability is improved. The structures of the locking mechanism and the locking piece are the prior art, and are not limited herein.

Specifically, the slider 51 includes a slide bush. The sliding sleeve is sleeved on the rear wheel supporting rod 4, the sliding sleeve can slide on the rear wheel supporting rod 4 along the extension direction of the rear wheel supporting rod 4, and the first connecting rod 5 is rotatably connected to the outer side wall of the sliding sleeve. The sliding sleeve structure can improve the structural strength of the sliding fit structure between the first connecting rod 5 and the rear wheel strut 4, so that the frame 10 is more durable. It can be understood that both ends of the first connecting rod 5 are rotatably connected with the sliding sleeves, and the two sliding sleeves are respectively sleeved on the two rear wheel supporting rods 4 correspondingly.

In other embodiments, the sliding member 51 may also be a sliding block, a sliding groove is formed in the rear wheel support rod 4 along the extending direction of the sliding member, the sliding groove and the sliding block are in sliding fit, a protrusion is arranged on the sliding block in the sliding groove, and the protrusion can prevent the sliding block from being separated from the sliding groove, so that when the first connecting rod 5 slides, the function of restraining the rear wheel support rod 4 is achieved, and the rear wheel support rod 4 can rotate around the second shaft. Besides, the sliding member 51 may have other structures, which are not limited herein.

Further, the stroller also includes a seat assembly. As shown in fig. 2 to 4, the seat assembly includes a seat attachment 8 and a seat body 9, the seat attachment 8 is used to fix the seat body 9 to the frame 10, and a child can sit on the seat body 9 when the frame 10 is in the unfolded state. The seat attachment 8 is provided on the frame 10, and the seat body 9 is detachably attached to the seat attachment 8. The saddle body 9 can be dismantled with saddle connecting piece 8 and be connected, when saddle body 9 needs to separate with frame 10, can dismantle saddle body 9, has improved the practicality of children's shallow.

Preferably, the seat body 9 includes a back rest 91 and a seat frame 92. The lower end of the back rest frame 91 is rotatably connected to the rear end of the seat frame 92, and the seat frame 92 is detachably connected to the seat attachment 8. The backrest frame 91 is rotatably connected with the seat frame 92, when the stroller is in a folded state, the frame 10 is in the folded state, and the backrest frame 91 can be rotated towards the upper end face of the seat frame 92 and can be close to each other, so that the seat body 9 is also in the folded state, the volume of the stroller after being folded is smaller, and the practicability and the portability of the stroller are improved.

Preferably, an upper end of the back frame 91 is rotatably connected with one end of a first hood pole 93 and one end of a second hood pole 94. When the frame 10 is in the deployed state, the other end of the first hood bar 93 extends toward the front of the frame 10, and the other end of the second hood bar 94 extends toward the rear of the frame 10. When the seat body 9 is in the folded state, as shown in fig. 4 to 5, the first hood bar 93 and the second hood bar 94 can be rotated toward the back of the back frame 91 to fold the hoods and reduce the volume of the stroller. In other embodiments, the first hood bar 93 and the second hood bar 94 may also be rotated toward the front of the back frame 91, or the first hood bar 93 and the second hood bar 94 may be folded themselves, which is not limited herein.

Preferably, a hood support 95 is detachably attached to an upper end of the back frame 91. First hood pole 93 and second hood pole 94 all rotate to be connected in hood support 95, and hood support 95 can be dismantled with back frame 91 and be connected, when hood support 95 needs to separate with back frame 91, can dismantle hood support 95 gets off, has improved the practicality. In this embodiment, the lower end of the hood support 95 is detachably coupled to the upper end of the back frame 91, and the first hood rod 93 and the second hood rod 94 are rotatably coupled to the upper end of the hood support 95. Specifically, the back of the upper end of the backrest frame 91 is provided with two slots, and the lower end of the hood support 95 is provided with two insertion rods, which can be inserted into the two slots. In other embodiments, the number of the slots and the insertion rods may be different, or the connecting structure between the hood support 95 and the backrest frame 91 may be different, which is not limited herein.

In this embodiment, the first hood pole 93 and the second hood pole 94 are both C-shaped, the end of the first hood pole 93 and the end of the second hood pole 94 are both rotatably connected to the upper end of the hood support 95, and the first hood pole 93 and the second hood pole 94 are both provided with hood cloth, which can play a role in shielding sunlight or rainwater. In the present embodiment, the distal end of the first hood pole 93 and the distal end of the second hood pole 94 rotate about the same axis. In other embodiments, the end of the first hood pole 93 and the end of the second hood pole 94 can rotate around different axes, which is not limited herein.

Preferably, the saddle body 9 further comprises armrests 96. The armrest 96, the back rest frame 91, and the seat frame 92 are coaxially and rotatably connected, and the provision of the armrest 96 can improve the safety of a child seated in the seat body 9. And the handrail 96 is also arranged in a rotating way, when the baby stroller is in a folding state, the backrest 91, the seat frame 92 and the handrail 96 of the seat body 9 can be relatively rotated and mutually close to each other, so that the seat body 9 is also in the folding state, the volume of the baby stroller after being folded is smaller, and the practicability and the portability are improved. In the present embodiment, the armrest 96 is U-shaped, and when a child sits on the seat body 9, the effect of protecting the child is improved. The ends of the arm rest 96, the back rest 91 and the seat frame 92 are coaxially rotatably connected.

In other embodiments, the end of the armrest 96 may be pivotally connected to the backrest frame 91 or the seat frame 92, or the armrest 96 may have other configurations, which are not limited herein. The seat body 9 may further be provided with a locking assembly for locking the relative positions of the armrest 96, the backrest frame 91 and the seat frame 92, so as to adjust the posture of the seat body 9 according to actual requirements. The locking assembly for locking the posture of the seat body 9 is prior art and will not be described herein.

Preferably, the seat attachment 8 includes a receiving plate 81 and a fourth link 82. The bottom of the bearing plate 81 is protruded with a protrusion 83, and the end of the protrusion 83 is rotatably connected to the end of the push rod assembly 3. Specifically, the distal end of the projection 83 is rotatably connected to the end of the sleeve 31 that is rotatably connected to the front wheel strut 1. One end of the fourth link 82 is rotatably connected to the bottom of the receiving plate 81, and the other end is rotatably connected to the front wheel strut 1. When the frame 10 is in the unfolded state, the receiving plate 81 is horizontally disposed, which facilitates the stable placement of the seat body 9. In other embodiments, the receiving plate 81 may be disposed obliquely when the frame 10 is in the unfolded state, so as to ensure the stability of the bracket fixing connection with the seat body 9, which is not limited herein.

As shown in fig. 5, when the push rod assembly 3 and the front wheel strut 1 rotate relatively, i.e. when the sleeve 31 and the front wheel strut 1 rotate relatively, the protrusion 83 is moved, so as to drive the front end of the receiving plate 81 to rotate downward, so that the front end of the receiving plate 81 approaches the front wheel strut 1 and tends to be parallel to the front wheel strut 1. That is, when the stroller frame 10 is folded, the receiving plate 81 can be made to be close to the front wheel strut 1, that is, the seat body 9 can be made to be close to the front wheel strut 1, so that the compactness of the structure is improved, the size of the stroller in a folded state is reduced, the practicability and the portability are improved, other folding operations on the seat connecting piece 8 are avoided, and the operations during folding and unfolding of the stroller are simplified.

In this embodiment, the length of the fourth link 82 and the projection 83 is required to ensure that the front end of the receiving plate 81 rotates downward when the sleeve 31 is rotated.

In the present embodiment, the fourth link 82 is provided on the lower surface of the front end of the receiving plate 81, and the projection 83 is fixed to the lower surface of the rear end of the receiving plate 81. And the fourth link 82 is provided with two, the stability of supporting the seat body 9 is improved.

In this embodiment, the upper surface of the receiving plate 81 is provided with four concave recesses for positioning and placing the seat body 9. In other embodiments, the positioning structure between the bearing plate 81 and the seat body 9 may be in other structural forms, and is not limited herein.

In this embodiment, a bottom surface of the seat frame 92 is provided with a seat frame connector which can be engaged with the receiving plate 81. The bearing plate 81 and the seat frame connecting piece can be connected through a buckle. In other embodiments, the bearing plate 81 and the seat frame connecting member may be detachably connected by other forms, which are not limited herein.

The folded condition of the stroller is shown in fig. 6. For ease of understanding, the specific operation in folding the stroller provided in this embodiment is as follows: first, the first hood bar 93 and the second hood bar 94 are rotated toward the back surface of the back frame 91 until the first hood bar 93 and the second hood bar 94 are attached to the back surface of the back frame 91. Next, the back rest frame 91 and the armrest 96 are rotated toward the upper end surface of the seat frame 92 until the back rest frame 91 and the armrest 96 are fitted to the upper end surface of the seat frame 92. The locking action of the locking element on push rod assembly 3 is then released, pushing push rod 32 into sleeve 31 until push rod assembly 3 reaches a minimum length. And finally, rotating the push rod assembly 3 towards the lower part of the front wheel supporting rod 1, thus completing the folding operation of the baby stroller. According to the operation of the foldable stroller, the operation of unfolding the stroller can be obtained in the same way, and the details are not repeated herein.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A stroller comprising a frame (10) having an unfolded state and a folded state, a front wheel assembly (101) disposed at a front portion below the frame (10), a rear wheel assembly (102) disposed at a rear portion below the frame (10), and a locking mechanism for locking the frame (10) in the unfolded state, characterized in that the frame (10) comprises:

the device comprises a first shaft, wherein connecting pieces (21) are fixed at two ends of the first shaft;

the lower end of the front wheel strut (1) is connected with the front wheel assembly (101);

the lower end of the push rod component (3) is rotatably connected to the upper end of the front wheel supporting rod (1) through the first shaft;

the rear wheel support comprises two rear wheel supporting rods (4) which are arranged at an angle, the lower ends of the rear wheel supporting rods (4) are connected with the rear wheel assembly (102), and the upper ends of the two rear wheel supporting rods (4) are respectively connected to the two connecting pieces (21) in a rotating mode around an axis perpendicular to the first shaft;

the two ends of the first connecting rod (5) are rotatably connected with sliding pieces (51), the sliding pieces (51) are slidably connected with the rear wheel supporting rod (4), and the sliding pieces (51) can slide along the extending direction of the rear wheel supporting rod (4);

coupling assembling, coupling assembling's one end connect in first connecting rod (5), the other end connect in front wheel branch (1) and/or push rod assembly (3), work as front wheel branch (1) with when push rod assembly (3) relatively rotate, coupling assembling can drive first connecting rod (5) are followed rear wheel branch (4) slide.

2. Child stroller according to claim 1, characterized in that the connecting assembly comprises a second link (6) and a third link (7), one end of the second link (6) being rotatably connected to the front wheel strut (1) and one end of the third link (7) being rotatably connected to the push rod assembly (3); a support seat (52) is arranged in the middle of the first connecting rod (5), and a second shaft parallel to the first shaft is arranged on the support seat (52); the other end of the second connecting rod (6) is rotatably connected to the other end of the third connecting rod (7) through the second shaft.

3. Child stroller according to claim 1, wherein the push rod assembly (3) comprises a sleeve (31), a locking member and a push rod (32), the lower end of the sleeve (31) is rotatably connected to the front wheel strut (1), the upper end of the sleeve (31) is sleeved on one end of the push rod (32), the push rod (32) can slide along the extension direction of the sleeve (31), the other end of the push rod (32) is provided with a handle (33), and the locking member is used for locking the position of the push rod (32) in the sleeve (31).

4. Child stroller according to claim 1, further comprising a seat assembly comprising a seat connector (8) and a seat body (9), said seat connector (8) being arranged on said frame (10), said seat body (9) being detachably connected to said seat connector (8).

5. Child stroller according to claim 4, characterized in that the seat body (9) comprises a back rest (91) and a seat frame (92), the back rest (91) being rotatably connected at its lower end to the rear end of the seat frame (92), the seat frame (92) being detachably connected to the seat connection member (8).

6. Child stroller according to claim 5, characterized in that the seat body (9) further comprises an armrest (96), the back rest (91) and the seat frame (92) being coaxially and rotatably connected.

7. Child stroller according to claim 5, wherein the seat connector (8) comprises a receiving plate (81) and a fourth link (82), a protrusion (83) is protruded from the bottom of the receiving plate (81), the end of the protrusion (83) is rotatably connected to the end of the push rod assembly (3), one end of the fourth link (82) is rotatably connected to the bottom of the receiving plate (81), and the other end is rotatably connected to the front wheel strut (1).

8. The stroller of claim 6, wherein an upper end of the backrest frame (91) is rotatably connected with one end of a first hood bar (93) and one end of a second hood bar (94), the other end of the first hood bar (93) extending toward the front of the frame (10) and the other end of the second hood bar (94) extending toward the rear of the frame (10) when the frame (10) is in the unfolded state.

9. Child stroller according to claim 8, wherein a hood support (95) is detachably connected to an upper end of the backrest frame (91), and the first hood bar (93) and the second hood bar (94) are rotatably connected to the hood support (95).

10. Child stroller according to any of claims 1-9, characterized in that the sliding element (51) comprises a sliding sleeve, which is fitted over the rear wheel strut (4).