CN203996371U - A kind of children trolley of bi-directional foldable - Google Patents

Abstract

The utility model relates to a two-way foldable children's pushcart, which comprises a pushcart frame with an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly. The front wheel support of the front wheel assembly, the rear wheel support of the rear wheel assembly, the push rod, the front end and the lower end of the push rod are rotatably connected to each other, and the rear end of the swing rod is connected to the rear wheel. The bracket is rotatably connected, and the rear end of the front wheel bracket is rotatably connected with the rear wheel bracket. The front wheel bracket is provided with a first slider that can slide along its extending direction, and the push rod is provided with a sliding part that can slide along its extending direction. The second sliding member is rotatably connected to the upper end of the rear wheel bracket, and the swing bar is rotatably connected to the first sliding member and can slide along the front wheel bracket. The utility model has the advantages of simple structure, convenient operation, small volume, compactness and self-support after folding.

Description

Bidirectionally foldable children's stroller

technical field

The utility model relates to a bidirectionally foldable children's stroller.

Background technique

Purely from a theoretical point of view, in order to realize the two-way folding of the cart, it is only necessary to set the two side brackets to be foldable and set a cross brace between the two side brackets, but in practice, in order to achieve the convenience of folding at the same time, It is not easy to achieve the goals of small folding volume, simplified rods, and good stability of the frame. The Chinese patent ZL200820199669.8 proposed by the applicant discloses a two-way foldable children's stroller. The upper end of the rear foot bar is rotatably connected, the first sliding member slidably arranged on the front foot bar along the extension direction of the front foot bar, the two ends are respectively connected to the lower end of the hand push rod and the first sliding member. Rod; the stroller frame also includes a front cross brace composed of a first connecting rod and a second connecting rod hinged in the middle, wherein the two ends of the first connecting rod and the second connecting rod are connected with the second connecting rod located on the opposite side respectively. A sliding part is rotatably connected with the lower end of the front foot bar; in addition, the stroller also includes a locking mechanism for locking the stroller frame in an unfolded state. Although the volume of the stroller after folding is smaller than that of the previous strollers, there are many rods, the setting is complicated, the folding operation is not very convenient, and it cannot stand on its own after folding.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a two-way foldable children's stroller, which is simple to set up, easy to operate, small in volume, compact and self-supporting after folding.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A two-way foldable stroller for children, comprising a stroller frame with an unfolded state and a folded state, a front wheel assembly and a rear wheel assembly, the stroller frame includes side brackets located on both sides, the side brackets include bottom fronts with front The front wheel bracket and the lower end of the wheel assembly are provided with the rear wheel bracket of the rear wheel assembly, the push rod, the front end and the lower end of the push rod are rotatably connected to each other, and the rear end of the swing rod is rotatably connected to the rear wheel bracket. The rear end of the front wheel bracket is rotatably connected with the rear wheel bracket. The front wheel bracket is provided with a first sliding piece that can slide along its extending direction, and the push rod is provided with a second sliding piece that can slide along its extending direction. The second slider is rotatably connected to the upper end of the rear wheel bracket, and the swing link is rotatably connected to the first slider and can slide along the front wheel bracket.

According to a specific aspect of the utility model: the front wheel bracket and the rear wheel bracket are rotatably connected through the first pivot, the front end of the swing rod is rotatably connected with the lower end of the push rod through the second pivot, and the rear of the swing rod The first sliding member is rotatably connected with the first sliding member through the third pivot, and the second sliding member is rotatably connected with the upper end of the rear wheel bracket through the fourth pivot. Preferably, when the stroller is in the unfolded state, the connection point between the swing rod and the push rod is higher than the connection point between the swing rod and the first slider; the connection point between the second slider and the rear wheel bracket is higher than the connection point between the front wheel bracket and the rear wheel The connection point of the bracket. Preferably, the first pivot, the second pivot, the third pivot, and the fourth pivot are all parallel and extend along the width direction of the cart frame.

Preferably, the side supports on both sides are arranged symmetrically.

Specifically, both the first sliding member and the second sliding member are sliding sleeves, respectively sleeved on the front wheel bracket and the push rod.

Preferably, when folding, the first sliding part slides forward and downward along the front wheel bracket, and the second sliding part slides backward along the push rod

Further, the cart frame further includes a cross brace arranged between the two side supports, the cross brace is composed of a first rod and a second rod connected to each other in rotation in the middle, the first rod, the second The rear ends of the rods are respectively rotatably connected to the lower parts of the rear wheel brackets on both sides, and the front ends of the first rod and the second rod are respectively rotatably connected to the front parts of the swing rods on both sides. Specifically, the first rod and the second rod are respectively rotatably connected to the swing rod and the rear wheel bracket through the fifth pivot. The axis direction of the fifth pivot is perpendicular to the plane where the cross brace is located.

Further, the stroller frame also includes a rear support assembly arranged between the rear wheel brackets on both sides.

Specifically, the rear support assembly includes a vertically extending longitudinal link located at the rear middle of the cart, an upper connection seat, a middle connection seat and a lower connection seat arranged on the longitudinal link from top to bottom in sequence, and the inner end The first cross bar and the second cross bar which are respectively connected to the opposite two sides of the upper connecting seat in rotation, the third cross bar and the fourth cross bar whose inner ends are respectively connected to the opposite two sides of the lower connecting seat in rotation, and the upper ends are respectively The first connecting rod and the second connecting rod that are rotationally connected to the opposite two sides of the middle connecting seat, the first cross bar, the second cross bar, the third cross bar and the fourth cross bar are all arranged horizontally, and their outer ends Both are rotatably connected with the rear wheel bracket on the same side, and the lower ends of the first connecting rod and the second connecting rod are respectively rotatably connected with the third crossbar and the fourth crossbar. Preferably, a handle is provided on the upper part of the longitudinal link or on the upper connecting seat. A pedal is provided on the bottom of the longitudinal link or on the lower connecting seat. On the one hand, the setting of the rear support assembly further enhances the stability of the vehicle frame; on the other hand, the rear support assembly plays a role in locking the supports on both sides to prevent the vehicle frame from collapsing.

Due to the implementation of the above technical solutions, the utility model has the following advantages compared with the prior art:

The pushcart of the utility model can be folded in two directions, and after folding, it is small in size, compact and self-supporting; in addition, the pushcart of the utility model involves few rods, simple structure, no rod interference during folding, and convenient folding operation.

Description of drawings

Fig. 1 is a schematic side view (expanded state) of a children's stroller according to the utility model;

Fig. 2 is a rear view schematic diagram (expanded state) of the children's stroller according to the utility model;

Fig. 3 is a three-dimensional schematic diagram (expanded state) of the children's stroller according to the utility model;

Fig. 4 is a schematic side view (folded state) of the children's stroller according to the present invention;

Fig. 5 is a schematic front view (folded state) of the children's stroller according to the present utility model;

Among them: 1. Front wheel assembly; 2. Rear wheel assembly; 3. Side support; 30. Front wheel support; 31. Rear wheel support; 32. Push rod; 33. Swing bar; 4. Cross support; 40. The first One bar; 41, the second bar; 5, the first sliding member; 6, the second sliding member; 7, the rear support assembly; 70, the longitudinal link; 71, the upper connection seat; 72, the middle connection seat; 74, the first 75, the second cross bar; 76, the third cross bar; 77, the fourth cross bar; 78, the first connecting rod; 79, the second connecting rod; 8, the handle; 9, the pedal.

Detailed ways

As shown in FIGS. 1 to 5 , the children's stroller of this example includes a stroller frame with an unfolded state and a folded state, a front wheel assembly 1 and a rear wheel assembly 2 . The stroller frame includes side brackets 3 arranged symmetrically on both sides, a cross bracket 4 arranged between the brackets 3 on both sides, and a rear support assembly 5 . Side support 3 comprises front wheel support 30, rear wheel support 31, push rod 32, fork (or seat pocket bar) 33, is respectively provided with the first slide member 5 and the second slidingly on front wheel support 30 and push rod 32. The two sliding parts 6, the first sliding part 5 and the second sliding part 6 are all sliding sleeves, which are sleeved on the front wheel bracket 30 and the push rod 32 respectively. The rear end of the front wheel bracket 30 is rotatably connected to the rear wheel bracket 31 through the first pivot a, and the upper (front) end of the swing link 33 is rotatably connected to the lower end of the push rod 32 through the second pivot b. The rear part of the swing link 33 is rotatably connected with the first sliding member 5 through the third pivot c, and the rear end of the swing link 33 is rotatably connected with the rear wheel bracket 31 . The second sliding member 6 is rotatably connected to the upper end of the rear wheel bracket 31 through the fourth pivot d. The cross support 4 is composed of a first rod 40 and a second rod 41 which are rotatably connected to each other in the middle. The front and rear ends of the first rod 40 and the second rod 41 are rotatably connected with the swing rod 33 and the rear wheel bracket 31 respectively through the fifth pivot e. When the stroller was in the unfolded state, the connection point of the swing bar 33 and the push rod 32 was higher than the connection point of the swing bar 33 and the first slider 5; the connection point of the second slider 6 and the rear wheel bracket 31 was higher than the front wheel bracket 30 and the connection point of rear wheel bracket 31. The third pivot c is located in front of the first pivot a. The first pivot a, the second pivot b, the third pivot c, and the fourth pivot d are all parallel and extend along the width direction of the cart frame. The axis direction of the fifth pivot e is perpendicular to the plane where the cross brace 4 is located.

The rear support assembly 7 includes a vertically extending longitudinal link 70 positioned at the rear middle of the cart, an upper connecting seat 71, a middle connecting seat 72 and a lower connecting seat arranged on the longitudinal connecting rod 70 from top to bottom. The first cross bar 74 and the second cross bar 75 whose ends are respectively connected to the opposite two sides of the upper connecting seat 71 in rotation, and the third cross bar 76 and the fourth cross bar whose inner ends are respectively connected to the opposite two sides of the lower connecting seat in rotation. Cross bar 77, the first connecting rod 78 and the second connecting rod 79 that the upper end portion is connected with the relative two sides of connecting base 72 respectively in rotation, the first cross bar 74, the second cross bar 75, the third cross bar 76 and the first cross bar 74. Four crossbars 77 are all horizontally arranged, and their outer ends are all rotatably connected with the rear wheel bracket 31 on the same side, and the lower ends of the first connecting rod 78 and the second connecting rod 79 are connected with the third crossbar 76 and the second connecting rod respectively. Four crossbars 77 are connected in rotation. A handle 8 is provided on the top of the longitudinal link 70 . A pedal 9 is provided on the lower connecting seat. All above-mentioned crossbars and connecting rods are connected with the connecting seat by pivoting. The arrangement of the rear support assembly 7 further enhances the stability of the vehicle frame on the one hand, and on the other hand, the rear support assembly plays a role in locking the supports on both sides to prevent the vehicle frame from collapsing.

When it is about to be folded, lift the handle 8 upwards to make the cross brace 4 close inward and lengthen longitudinally, and drive the pendulum 33 to swing downward; sliding, thereby driving the push rod 32 to rotate forward, the first slider 5 slides forward through the swing rod 33 to make the rear wheel bracket 31 rotate around the first pivot a to the front wheel bracket 30 and make the second slider 6 move along the push The rod 32 slides to the rear of the push rod 32; the push rod 32 rotates with the fourth pivot d while moving forward and moves closer to the front wheel bracket 30, and finally the whole vehicle folds and stands on its own, as shown in FIGS. 4 and 5 .

When it will be opened, step on the pedal 9 with your feet while lifting the push rod 32 upwards, you can open it.

The utility model has been described in detail above, and its purpose is to allow those familiar with the technology in this field to understand the content of the utility model and implement it, and can not limit the protection scope of the utility model. All equivalent changes or modifications made in essence shall fall within the protection scope of the present utility model .

Claims (10)

1. the children trolley of a bi-directional foldable, comprise the trolley rack with deployed condition and folded state, front component and wheel assembly, described trolley rack comprises the side stand that is positioned at both sides, described side stand comprises that front portion, the end is provided with the front-wheel support of described front component, bottom is provided with the rear wheel support of described wheel assembly, push rod, leading section and the bottom of the described push rod fork being connected that rotates, the rearward end of described fork and described rear wheel support are rotationally connected, the rearward end of described front-wheel support rotates and is connected with described rear wheel support, it is characterized in that: described front-wheel support is provided with first sliding part that can slide along its bearing of trend, described push rod is provided with second sliding part that can slide along its bearing of trend, described the second sliding part rotates and is connected with the upper end of described rear wheel support, described fork rotates and is connected and can slides along front-wheel support with the first described sliding part.

2. the children trolley of bi-directional foldable according to claim 1, it is characterized in that: described front-wheel support is rotated and is connected by the first pivot with described rear wheel support, the leading section of described fork is rotated and is connected by the second pivot with the bottom of described push rod, the rear portion of described fork is rotated and is connected by the 3rd pivot with described the first sliding part, and described the second sliding part is rotated and is connected by the 4th pivot with the upper end of described rear wheel support.

3. the children trolley of bi-directional foldable according to claim 2, is characterized in that: go-cart is in the time of deployed condition, and described fork and the point of connection of described push rod are higher than the point of connection of described fork and described the first sliding part; The second described sliding part and the point of connection of described rear wheel support are higher than the point of connection of described front-wheel support and described rear wheel support.

4. according to the children trolley of the bi-directional foldable described in claim 2 or 3, it is characterized in that: described the first pivot, the second pivot, the 3rd pivot, the 4th pivot are all parallel, and extend along the Width of described trolley rack.

5. the children trolley of bi-directional foldable according to claim 1, is characterized in that: described the first sliding part and the second sliding part are sliding sleeve, and correspondence is set on described front-wheel support and described push rod respectively.

6. the children trolley of bi-directional foldable according to claim 1, is characterized in that: when folding, described the first sliding part is along described front-wheel support down sliding forward, and described the second sliding part slides backward along described push rod.

7. the children trolley of bi-directional foldable according to claim 1, it is characterized in that: described trolley rack also comprises and is arranged on the cross support between side stand described in two, described cross support is mutually rotationally connected and forms at middle part by the first bar and the second bar, the rearward end of described the first bar, the second bar rotates and is connected with the bottom of the rear wheel support of both sides respectively, and the leading section of the first bar, the second bar rotates and is connected with the front portion of the fork of both sides respectively.

8. according to the children trolley of the bi-directional foldable described in claim 1 or 7, it is characterized in that: described trolley rack also comprises the rear support assembly being arranged between the rear wheel support of both sides.

9. the children trolley of bi-directional foldable according to claim 8, it is characterized in that: described rear support assembly comprises and is positioned at middle part after go-cart, the vertical connecting rod vertically extending, be successively set on the upper connecting base on described vertical connecting rod from top to bottom, middle Connection Block and lower connecting base, the first cross bar and the second cross bar that inner end is rotationally connected with relative two sides of described upper connecting base respectively, the 3rd cross bar and the 4th cross bar that inner end is rotationally connected with relative two sides of described lower connecting base respectively, first connecting rod and second connecting rod that upper end is rotationally connected with relative two sides of described middle Connection Block respectively, the first described cross bar, the second cross bar, the 3rd cross bar and the 4th cross bar are all horizontally disposed with, and their outer end all rotates and is connected with the described rear wheel support of homonymy, described first connecting rod and the bottom of second connecting rod rotate and are connected with described the 3rd cross bar and the 4th cross bar respectively.

10. the children trolley of bi-directional foldable according to claim 9, is characterized in that: top or the upper connecting base of described vertical connecting rod are provided with handle, and bottom or the lower connecting base of described vertical connecting rod are provided with stretcher.