CN112407013B - Strollers - Google Patents

Abstract

The invention discloses a child stroller, comprising a stroller frame with an unfolded state and a folded state. The stroller has a small folded volume and can stand on the ground after being folded, so it is easy to carry and store. In the unfolded state, the side brackets on each side include: a front support rod; a rear support rod, comprising a rear upper support rod and a rear lower support rod that are relatively slidably telescopically connected in the up-down direction; a push rod; a side armrest extending in the front-to-back direction, and the rear part is rotatably connected to the push rod; a connecting rod extending in the front-to-back direction, and the front part is rotatably connected to the front support rod; a rear support rod extending in the up-to-down direction, and the lower part is rotatably connected to the rear lower support rod; a linkage rod, one end of which is rotatably connected to the lower part of the rear upper support rod, and the other end of which is rotatably connected to the rear support rod; wherein the front support rod, the rear upper support rod, and the side armrest are connected together around a first rotation center line, and the push rod, the connecting rod, and the rear support rod are connected together around a second rotation center line, and the first rotation center line and the second rotation center line are parallel to each other.

Description

Strollers

Technical Field

The invention relates to a baby stroller.

Background Art

In the prior art, foldable child strollers have different structures and different folding principles. Most of them have the problem of being large in size when folded and being inconvenient to carry and store.

Summary of the invention

The object of the present invention is to provide a baby stroller which has a small folding volume and is convenient for carrying and storing.

In order to achieve the above object, the technical solution adopted by the present invention is:

A child stroller, comprising a stroller frame having an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly arranged at the bottom of the stroller frame, and a locking mechanism for locking the stroller frame in the unfolded state, the stroller frame comprising two sets of side brackets arranged on the left and right sides, and in the unfolded state, the side brackets on each side include:

A front support rod, wherein the front wheel assembly is arranged at the bottom of the front support rod;

A rear support rod, the rear support rod comprising a rear upper support rod and a rear lower support rod which are relatively slidably and telescopically connected in an up-and-down direction, and the rear wheel assembly is arranged at the bottom of the rear lower support rod;

Putting;

A side armrest, the side armrest extending in the front-to-back direction, the rear portion of the side armrest being rotatably connected to the push rod;

A connecting rod, the connecting rod extending in the front-to-back direction, the front portion of the connecting rod being rotatably connected to the front support rod;

A rear support rod, the rear support rod extending in the up-down direction, the lower portion of the rear support rod being rotatably connected to the rear lower support rod;

A linkage rod, one end of which is rotatably connected to the lower portion of the rear upper support rod, and the other end of which is rotatably connected to the rear support rod;

Among them, the upper part of the front support rod, the upper part of the rear upper support rod, and the front part of the side armrest are connected together to rotate around a first rotation center line, the lower part of the push rod, the rear part of the connecting rod, and the upper part of the rear support rod are connected together to rotate around a second rotation center line, and the first rotation center line is parallel to the second rotation center line.

Preferably, the front portion of the connecting rod is rotatably connected to the front support rod via a first axis, the rear portion of the side armrest is rotatably connected to the push rod via a second axis, and when the cart frame is in an unfolded state, the axis centerline of the first axis is located below the first rotation centerline, and the axis centerline of the second axis is located above the second rotation centerline.

Preferably, when the cart frame is in an unfolded state, the first rotation centerline is higher than the second rotation centerline in a vertical direction.

Preferably, the side bracket on each side also includes a seat rod extending in the front-to-back direction, the front portion of the seat rod is rotatably connected to the upper portion of the front support rod or the upper portion of the rear upper support rod or the front portion of the side armrest, and the rear portion of the seat rod can be connected to the connecting rod both relatively rotatably and relatively slidably along the length direction of the connecting rod.

Preferably, the front portion of the seat post is rotatably connected to the upper portion of the front support rod, the upper portion of the rear upper support rod and the front portion of the side armrest around the first rotation center line, and the rear portion of the seat post is rotatably connected to a first sliding member, which is relatively slidably disposed on the connecting rod along the length direction of the connecting rod.

Preferably, along the left-right direction of the cart frame, the side armrests, the front support rod, the seat rod, and the rear upper support rod are arranged in sequence from outside to inside and are rotatably connected together through the same rotating shaft.

Preferably, the cart frame also includes a front armrest arranged between the side brackets on both sides, the front armrest includes two groups of armrest rods which are arranged on the left and right sides and connected to the side brackets on the corresponding sides, the armrest rods extend in the front-to-back direction, the rear end of the armrest rods is rotatably connected to the connecting rod, and a second sliding member is rotatably provided on the side armrests, and the second sliding member can be relatively slidably provided on the armrest rods along the length extension direction of the armrest rods.

Preferably, the lower portion of the rear upper support rod is slidably inserted into the rod cavity of the rear lower support rod, and the rear lower support rod is provided with a guide groove extending in the up-down direction, and a connecting pin is slidably inserted in the guide groove, and one end portion of the linkage rod is rotatably connected to the lower portion of the rear upper support rod through the connecting pin.

Preferably, the cart frame further comprises a push handle arranged between the upper portions of the push rods on both sides, the push handle having push handle rods arranged on the left and right sides, the lower portion of the push handle rod being rotatably connected to the upper portion of the push rod on the same side.

Preferably, when the cart frame is in a folded state, the front support rod, side armrest, push rod and connecting rod in the side bracket on each side are retracted into each other, the front wheel assembly and the rear wheel assembly are retracted into each other, and the two groups of rear wheel assemblies are located between the two groups of front wheel assemblies in the left-right direction.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the child stroller of the present invention has a simple structure and a small folded volume, and the frame can stand on the ground after folding, which is convenient for carrying and storing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of a specific embodiment of a child stroller of the present invention when the frame is in an unfolded state;

FIG2 is an exploded view of the child stroller frame of this embodiment;

FIG3 is a side view of the child stroller frame of this embodiment when it is in an unfolded state;

FIG4 is a front view of the child stroller frame of this embodiment when it is in an unfolded state;

FIG5 is a three-dimensional schematic diagram of the child stroller frame of this embodiment during folding;

FIG6 is a side view of the child stroller frame of this embodiment during folding;

FIG. 7 is a perspective view of the child stroller frame of this embodiment when it is in a folded state;

FIG8 is a side view of the child stroller frame of this embodiment when it is in a folded state;

FIG9 is a front view of the child stroller frame of this embodiment when it is in a folded state;

Among them: 1. cart frame; 11. side bracket; 111. front support rod; 112. rear support rod; 1121. upper rear support rod; 1122. lower rear support rod; 1123. rod cavity; 1124. guide groove; 113. push rod; 114. side armrest; 115. connecting rod; 116. rear support rod; 117. linkage rod; 118. seat rod; 121. front armrest; 1211. armrest rod; 122. front cross bar; 123. rear cross bar; 124. push handle; 1241. push handle rod; 1101. first sliding member; 1102. second sliding member; 2. front wheel assembly; 21. front wheel; 22. front wheel axle; 3. rear wheel assembly; 31. rear wheel; 32. rear wheel axle.

DETAILED DESCRIPTION

The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

The descriptions of up and down, left and right, front and back, inside and outside, etc. in this article are all described with reference to the up and down, left and right, front and back, inside and outside, etc. observed by the child when the child is normally sitting in the stroller.

Referring to FIG. 1 , a child stroller includes a stroller frame 1 having an unfolded state and a folded state, a front wheel assembly 2 and a rear wheel assembly 3 disposed at the bottom of the stroller frame 1, and a locking mechanism for locking the stroller frame 1 in the unfolded state. The stroller frame 1 includes two sets of side brackets 11 disposed on the left and right sides and a transverse bracket disposed between the two sets of side brackets 11, the front wheel assembly 2 includes a front wheel axle 22 and a front wheel 21 rotatably connected to the stroller frame 1 through the front wheel axle 22, the rear wheel assembly 3 includes a rear wheel axle 32 and a rear wheel 31 rotatably connected to the stroller frame 1 through the rear wheel axle 32, and the axis lines of the front wheel axle 22 and the rear wheel axle 32 are parallel to each other and extend in the left-right direction.

As shown in FIGS. 1 to 4 , in the unfolded state, the side bracket 11 on each side includes a front support rod 111 , a rear support rod 112 , a push rod 113 , a side armrest 114 , a connecting rod 115 , a rear support rod 116 , a linkage rod 117 and a seat rod 118 . Among them, the front wheel axle 22 is rotatably arranged at the bottom of the front support rod 111; the rear support rod 112 includes a rear upper support rod 1121 and a rear lower support rod 1122 which are relatively slidably telescopically connected in the up-down direction, and the rear wheel axle 32 is rotatably arranged at the bottom of the rear lower support rod 1122; the side armrest 114 extends in the front-to-back direction, and its rear part is rotatably connected to the push rod 113 through the second axis d; the connecting rod 115 extends in the front-to-back direction, and its front part is rotatably connected to the front support rod 111 through the first axis c; the rear support rod 116 extends in the up-down direction, and its lower part is rotatably connected to the rear lower support rod 1122 through the rotating shaft i; one end of the linkage rod 117 is rotatably connected to the rear upper support rod 111 through the rotating shaft h The lower part of the seat bar 118 is rotatably connected to the upper part of the front support bar 111, or the upper part of the rear upper support bar 1121, or the front part of the side armrest 114, and the rear part of the seat bar 118 can be relatively rotated and can be relatively slidably connected to the connecting rod 115 along the length direction of the connecting rod 115.

Specifically, the lower portion of the rear upper support rod 1121 is slidably inserted into the rod cavity 1123 of the rear lower support rod 1122, and the rear lower support rod 1122 is provided with a guide groove 1124 extending in the up-down direction, and a connecting pin (not shown in the figure) is slidably inserted in the guide groove 1124, and the upper end portion of the linkage rod 117 is rotatably connected to the lower portion of the rear upper support rod 1121 through the connecting pin via the rotating shaft h.

Specifically, the rear portion of the seat rod 118 is rotatably connected to the first sliding member 1101 via a rotating shaft j. The first sliding member 1101 is relatively slidably disposed on the connecting rod 115 along the length direction of the connecting rod 115 .

As shown in Figures 1 to 4, in this embodiment, the upper part of the front support rod 111, the upper part of the rear upper support rod 1121, the front part of the side armrest 114 and the front part of the seat rod 118 are rotatably connected around the first rotation center line a, and along the left and right directions of the stroller frame 1, the side armrest 114, the front support rod 111, the seat rod 118 and the rear upper support rod 1121 are arranged in sequence from the outside to the inside, so that the arrangement can provide the largest possible riding space for children and is conducive to the mutual retraction of the front wheel assembly 2 and the rear wheel assembly when the stroller frame 1 is folded; the lower part of the push rod 113, the rear part of the connecting rod 115 and the upper part of the rear support rod 116 are rotatably connected around the second rotation center line b. Specifically, the first rotation center line a, the second rotation center line b, the axis line of the first axis c and the axis line of the second axis d are parallel to each other. When the stroller frame 1 is in the unfolded state, the first rotation center line a is located in front of and above the second rotation center line b, the axis line of the first axis c is located in front of and below the first rotation center line a, and the axis line of the second axis d is located in the rear and above the second rotation center line b. This arrangement can provide a more comfortable riding space for children with a seat tilted backward and downward and a backrest tilted upward and backward; in addition, when the stroller frame is in the unfolded state, the rotating shaft h is located in front of and above the rotating shaft g, and the rotating shaft h is located in front of and above the rotating shaft i, which is conducive to the process of the rear support rod 116 rotating downward and the rear lower support rod 1122 being retracted, and the rear upper support rod 1121 is linked to slide downward and retract along the rear lower support rod 1122 through the linkage rod 117.

As shown in Fig. 1 to Fig. 4, the above-mentioned horizontal support includes a front armrest 121, a front crossbar 122, a rear crossbar 123 and a push handle 124. Among them, the front armrest 121 includes two groups of armrest rods 1211 arranged on the left and right sides and connected to the side support 11 on the corresponding side, the armrest rods 1211 extend in the front-to-back direction, and the rear end thereof is rotatably connected to the connecting rod 115 through the rotating shaft f, and the side armrest 114 is rotatably provided with a second sliding member 1102 through the rotating shaft k, and the second sliding member 1102 can be relatively slidably arranged on the armrest rod 1121 along the length extension direction of the armrest rod 1121.

In this embodiment, the first sliding member 1101 and the second sliding member 1102 are specifically sliding sleeves.

As shown in FIG. 1 to FIG. 4 , the push handle 124 has push handle rods 1241 disposed on the left and right sides, and the lower portion of the push handle rod 1241 is rotatably connected to the upper portion of the push rod 113 on the same side through a rotating shaft e.

As shown in Figures 1 to 4, the axis lines of the front cross bar 122 and the rear cross bar 123 are parallel to each other and extend in the left-right direction, wherein the axis line of the front cross bar 122 coincides with the first rotation center line a, and both ends of the front cross bar 122 are rotatably connected to the upper part of the front support rod 111, the upper part of the rear upper support rod 1121, the front part of the side armrest 114 and the front part of the seat rod 118; the rear cross bar 123 is fixed between the lower parts of the two sets of rear lower support rods 1122.

The locking mechanism of the present invention can be arranged between any of the above-mentioned rotating or slidingly connected rods. In this embodiment, the locking mechanism is arranged between the push handle rod 1241 and the push rod 113, and between the push rod 113 and the rear support rod 116. The specific structure is not the key point of the present technical solution, and the existing technology can be used.

As shown in Figures 5 and 6, during the folding process of the stroller frame 1 of this embodiment, the locking mechanism is first unlocked, the push handle 124 is pressed down to rotate and retract it with the push rod 113, and then the push rod 113 is pressed down to make the second rotation center line b move downward; during the process of the rear support rod 116 rotating and retracting toward the rear lower support rod 1122 around the rotation axis i, the linkage rod 117 drives the rear upper support rod 1121 to slide downward along the rear lower support rod 1122, thereby shortening the length of the rear support rod 112, so that the height of the entire vehicle after folding is reduced; at the same time, the side armrests 114, the seat rod 118, the rear upper support rod 1121 and the front support rod 111 are rotated and retracted around the first rotation center line a, driving the first sliding member 1101 to slide forward along the connecting rod 115 and the second sliding member 1102 to slide upward along the armrest rod portion 1121, thereby driving the front armrest 121 and the connecting rod 115 to rotate and retract with the above-mentioned rods. In this way, the cart frame 1 is folded in a linked manner in the up-down and front-back directions, the folding operation is simple, and the folded volume is greatly reduced.

As shown in Figures 7 to 9, when the cart frame 1 is in a folded state, the front support rod 111, the side armrest 114, the push rod 113 and the connecting rod 115 in the side bracket 11 on each side are retracted together, the front wheel assembly 2 and the rear wheel assembly 3 are retracted together, and the two groups of rear wheel assemblies 3 are located between the two groups of front wheel assemblies 2 along the left-right direction. The spacing between the axis lines of the front wheel axle 22 and the rear wheel axle 32 is very small, the front wheel 21 and the rear wheel 31 are partially or completely overlapped in the left-right direction, the volume of the cart frame 1 is reduced to a very small size in the front-to-back direction, and it can stand on the ground by itself, which is convenient for carrying and storage.

The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a children's shallow, includes that have the shallow frame of expansion state and folding state, locate front wheel subassembly and rear wheel subassembly of shallow frame bottom, and be used for with the locking mechanical system of shallow frame lock under the expansion state, the shallow frame is including locating the two sets of side brackets of left and right sides, its characterized in that: in the unfolded state, the side brackets on each side comprise:

the front wheel assembly is arranged at the bottom of the front support rod;

the rear support rod comprises a rear upper support rod and a rear lower support rod which are in relative sliding telescopic connection along the up-down direction, and the rear wheel assembly is arranged at the bottom of the rear lower support rod;

A push rod;

a side rail extending in a front-rear direction, a rear portion of the side rail being rotatably connected to the push rod;

The connecting rod extends along the front-back direction, and the front part of the connecting rod is rotationally connected to the front supporting rod;

the rear stay bar extends along the up-down direction, and the lower part of the rear stay bar is rotationally connected to the rear lower support bar;

a linkage rod, one end of which is rotatably connected to the lower part of the rear upper strut, the other end part of the linkage rod is rotationally connected to the rear stay rod;

The upper part of the front supporting rod, the upper part of the rear upper supporting rod and the front part of the side handrail are connected in a rotating way around a first rotating central line, the lower part of the push rod, the rear part of the connecting rod and the upper part of the rear supporting rod are connected in a rotating way around a second rotating central line, and the first rotating central line and the second rotating central line are parallel.

2. The stroller of claim 1, wherein: the front part of the connecting rod is rotationally connected with the front supporting rod through a first shaft, the rear part of the side handrail is rotationally connected with the push rod through a second shaft, the trolley frame is in an unfolding state, the axial lead of the first shaft is positioned below the first rotation central line, and the axial lead of the second shaft is positioned above the second rotation central line.

3. The stroller of claim 1, wherein: the trolley frame is in an unfolding state, and the first rotation center line is higher than the second rotation center line in the vertical direction.

4. The stroller of claim 1, wherein: the side brackets of each side further comprise seat bars extending in the front-rear direction, the front parts of the seat bars are rotatably connected with the upper parts of the front support bars or the upper parts of the rear upper support bars or the front parts of the side armrests, and the rear parts of the seat bars can be connected with the connecting bars in a relatively rotatable manner and relatively slidable manner along the length direction of the connecting bars.

5. The stroller of claim 4, wherein: the front part of the seat rod is rotationally connected with the upper part of the front supporting rod, the upper part of the rear upper supporting rod and the front part of the side handrail around the first rotation center line, the rear part of the seat rod is rotationally connected with a first sliding piece, and the first sliding piece is relatively slidably arranged on the connecting rod along the length direction of the connecting rod.

6. The stroller of claim 5, wherein: along the left and right directions of the cart frame, the side armrests, the front support rods, the seat rods and the rear upper support rods are sequentially arranged from outside to inside and are rotationally connected together through the same rotating shaft.

7. The stroller of claim 1, wherein: the cart frame also comprises a front handrail arranged between the side brackets on two sides, the front handrail comprises two groups of handrail rod parts which are respectively arranged on the left side and the right side and are connected with the side brackets on the corresponding sides, the handrail rod parts extend along the front-back direction, the rear end parts of the handrail rod parts are rotationally connected to the connecting rods, a second sliding part is rotationally arranged on the side handrail, and the second sliding part can be arranged on the handrail rod parts in a relative sliding manner along the length extending direction of the handrail rod parts.

8. The stroller of claim 1, wherein: the lower part of the rear upper supporting rod is inserted in the rod cavity of the rear lower supporting rod in a sliding manner, a guide groove extending along the up-down direction is formed in the rear lower supporting rod, a connecting pin is arranged in the guide groove in a penetrating manner in a sliding fit manner, and one end part of the linkage rod is rotationally connected with the lower part of the rear upper supporting rod through the connecting pin.

9. The stroller of claim 1, wherein: the cart frame also comprises pushing handles arranged between the upper parts of the pushing rods at the two sides, the pushing handles are provided with pushing handle rods which are respectively arranged at the left side and the right side, and the lower parts of the pushing handle rods are rotationally connected with the upper parts of the pushing rods at the same side.

10. A stroller according to any one of claims 1 to 9, wherein: when the trolley frame is in a folded state, the front support rod, the side handrails, the push rod and the connecting rod in the side support at each side are mutually folded, the front wheel assembly and the rear wheel assembly are mutually folded, and the two groups of rear wheel assemblies are positioned between the two groups of front wheel assemblies along the left-right direction.