CN206384000U - A kind of children trolley - Google Patents

Abstract

The utility model is related to a kind of children trolley.The vehicle frame of children trolley includes two side stands, the bottom bracing frame for being arranged on two side stand bottoms and the back pole-bracket for being arranged on two side stand rear portions set in left-right direction, side stand includes fore-stock, seat post, after-poppet and push rod, seat post is rotated with fore-stock and is connected, push rod is rotated with fore-stock and after-poppet and is connected, and after-poppet is rotated with seat post and is connected；Bottom bracing frame is rotated with front component and seat post and is connected, and bottom bracing frame can deploy and shrink along the fore-and-aft direction of vehicle frame；Back pole-bracket rotates with two after-poppets be connected respectively, and back pole-bracket can deploy and shrink along the left and right directions of vehicle frame.Vehicle frame mutually draws close folding in left and right directions, above-below direction when children trolley described in the utility model is folded, children trolley small volume after folding, easy to carry and transport, the children trolley Stability Analysis of Structures after expansion, the building block of side stand is few so that vehicle vehicle frame it is simple for structure light and handy.

Description

a stroller for children

technical field

The utility model relates to a stroller for children.

Background technique

At present, among the children's strollers, there are few children's strollers with three wheels, and the folding methods of the existing children's strollers are relatively simple, and most of them can only be folded along the front and rear directions of the vehicle frame. The volume occupied by the left and right directions of the folded stroller is still relatively large. Moreover, the relative positions of the three wheels of the existing three-wheeled stroller are fixed, so that after the folding operation of the stroller, the volume of the vehicle frame in the front-rear direction and the left-right direction is still relatively large, which brings troubles for the user to carry and transport. .

Utility model content

The technical problem to be solved by the utility model is to provide a children's stroller with a simple and light structure and a small occupied space after being folded.

In order to solve the above-mentioned technical problems, a technical solution adopted by the utility model is: a kind of stroller for children, including a vehicle frame with an unfolded state and a folded state, a front wheel assembly arranged at the front part of the lower part of the vehicle frame, and a The two rear wheel assemblies on the left and right sides of the lower rear. The vehicle frame includes two side brackets arranged along the left and right directions, a bottom bracket arranged at the lower part of the two side brackets and a rear bracket arranged at the rear of the two side brackets,

The side brackets include a front bracket whose lower part is connected to the front wheel assembly, a seat bar that is rotatably connected to the rear wheel assembly, a rear bracket and a push rod, the front part of the seat bar is rotatably connected to the front bracket, and the push rod The lower part of the rear bracket is rotatably connected with the upper part of the front bracket, the upper part of the rear bracket is rotatably connected with the push rod, and the lower part of the rear bracket is rotatably connected with the seat post;

The front part of the bottom bracket is rotatably connected to the front wheel assembly, the rear part of the bottom bracket is rotatably connected to the seat post, and the bottom bracket can be expanded and contracted along the front, rear, left and right directions of the vehicle frame;

The rear bracket is located between the two rear brackets and is respectively rotatably connected with the two rear brackets, and the rear bracket can expand and contract along the left and right directions of the vehicle frame;

When the vehicle frame is in the unfolded state, the front wheel assembly and the rear wheel assembly approach each other along the front and rear directions, and the two rear wheel assemblies move away from each other along the left and right directions, the bottom bracket shrinks along the front and rear directions, and the front bracket The seat bar and the seat rod move upwards under the drive of the bottom bracket, and the rear bracket is deployed along the left and right directions, and the two rear brackets are driven by the rear bracket and are separated from each other in the left and right directions. Stand above the front bracket and the rear bracket; when the vehicle frame is in the folded state, the front wheel assembly and the rear wheel assembly are far away from each other along the front and rear directions, and the two rear wheel assemblies are close to each other along the left and right directions, and the bottom bracket is along the The front-to-back direction is unfolded, the front bracket and the seat post move downwards under the drive of the bottom bracket, the rear bracket shrinks along the left-right direction, and the two rear brackets move closer to each other along the left-right direction under the drive of the rear bracket. The push rod rotates forward and moves closer to the front bracket, and the rear bracket rotates forward and moves closer to the push rod driven by the push rod.

Specifically, the bottom bracket includes a first bottom bar, a second bottom bar, a third bottom bar and a fourth bottom bar, the front part of the first bottom bar, the front part of the second bottom bar and the front wheel assembly The three are connected to each other by a pivot, the rear part of the first bottom bar is pivotally connected with the front part of the third bottom bar, and the rear part of the second bottom bar is pivotally connected with the front part of the fourth bottom bar connected, the third bottom bar and the fourth bottom bar cross each other and are hinged to each other at the intersection, the rear part of the third bottom bar is pivotally connected with the seat post on the right side, and the rear part of the fourth bottom bar Pivotally connected with the seat bar on the left side, the first bottom bar, the second bottom bar, the third bottom bar and the fourth bottom bar form a four-bar linkage mechanism.

Further, the connection between the third bottom bar and the seat post on the right side and between the fourth bottom bar and the seat post on the left side is respectively connected by a connecting piece, and the connecting piece has an L-shaped bending structure, so The seat bar is rotatably connected to the upper hem of the connecting piece, and the third bottom bar/fourth bottom bar is rotatably connected to the lower hem of the connecting piece.

Specifically, the front part of the front bracket and the front wheel assembly are rotatably connected to each other, and the front bracket can not only rotate up and down but also rotate in/out of the frame relative to the front wheel assembly.

Preferably, the rear brace includes a main brace, a slider slidably arranged on the main brace, a first link, a second link, a third link and a fourth link, the main brace The rod and the rear bracket are parallel to each other, the slider can slide up and down along the extension direction of the main strut, the first connecting rod and the second connecting rod are respectively arranged on the left and right sides of the main strut, and the upper part of the first connecting rod and the upper part of the second connecting rod are respectively rotatably connected with the slider, the third connecting rod and the fourth connecting rod are respectively arranged on the left and right sides of the main strut, and the upper part of the third connecting rod and the upper part of the fourth connecting rod are respectively It is connected to the lower part of the main strut in rotation, the lower part of the first connecting rod, the lower part of the third connecting rod and the rear bracket on the left side are connected to each other through a pivot, the lower part of the second connecting rod, the fourth connecting rod The lower part of the bar and the rear bracket on the right side are connected to each other through a pivot, the first connecting rod, the third connecting rod and the main strut constitute a triangular three-link mechanism, the second connecting rod, the fourth connecting rod Rods and main struts also form a triangular three-bar linkage.

Further, the rear brace also includes a fifth connecting rod and a sixth connecting rod respectively arranged on the left and right sides of the main brace, the upper part of the fifth connecting rod, the upper part of the sixth connecting rod and the upper part of the main brace The three are connected to each other through a pivot, the bottom of the fifth connecting rod is connected to the rear bracket on the left side, the bottom of the sixth connecting rod is connected to the rear bracket on the right side, and the third connecting rod , the fifth connecting rod, the main strut and the left rear bracket constitute a quadrilateral four-bar linkage mechanism, and the fourth connecting rod, the sixth connecting rod, the main strut and the right rear bracket also constitute a quadrilateral four-link mechanism rod mechanism.

Specifically, a locking mechanism is provided between the slider and the main brace. When the locking mechanism is in the locked state, the slider and the main brace are fixed to each other; when the locking mechanism is in the unlocked state, the slider can Slide freely on the main strut.

Specifically, the lower part of the main strut is fixedly provided with a pedal, and the pedal protrudes backward on the main strut. Kicking and pulling the pedal upward can shrink the rear support, and pushing the presser foot downward The kick enables the rear stay to unfold.

Preferably, the rear support includes an upper support rod and a lower support rod, the upper part of the upper support rod is rotatably connected with the push rod, the lower part of the lower support rod is rotatably connected with the seat post, and the upper part of the lower support rod has Hollow lumen, the upper strut is inserted into the lumen of the lower strut and can slide up and down in the lumen, the upper strut is also covered with a spring, the upper part of the spring is offset against the upper strut, The lower part of the spring is opposed to the lower pole, and when the upper pole slides up and down in the lumen of the lower pole, the spring expands and contracts with the sliding of the upper pole.

Preferably, the vehicle frame further includes a backrest assembly arranged between the two seat posts, the backrest assembly includes a left backrest post rotatably connected to the left seat post, a right backrest rotatably connected to the right seat post Rod, the seventh connecting rod, the eighth connecting rod, the ninth connecting rod and the tenth connecting rod, the upper part of the seventh connecting rod is rotationally connected with the upper part of the ninth connecting rod, and the lower part of the seventh connecting rod is connected with the left The backrest rod is rotatably connected, the upper part of the eighth connecting rod is rotatably connected with the upper part of the tenth connecting rod, the lower part of the eighth connecting rod is rotatably connected with the right backrest rod, and the ninth connecting rod and the tenth connecting rod are connected to each other. Intersect and hinge with each other at the intersection, the lower part of the ninth connecting rod is rotatably connected with the right backrest rod, and the lower part of the tenth connecting rod is rotatably connected with the left backrest rod.

The above-mentioned orientation words such as front, rear, left, right, up, down, inside, and outside are defined by the front, back, left, right, and up and down directions observed by the user during normal use of the stroller.

The scope of the present utility model is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, technical solutions formed by replacing the above-mentioned features with technical features with similar functions disclosed in this application, etc.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art: adopting the rear bracket that can be expanded and contracted left and right can drive the two side supports to expand and fold in the left and right directions; The bottom bracket can drive the two side brackets to expand and fold in the left and right directions. The connecting rod structure of the push rod, front bracket, seat rod and rear bracket in the side bracket makes the side bracket, front bracket, seat rod The rod and the rear bracket can be relatively rotated and folded. When the children's stroller described in the utility model is folded, the frame is close to each other and folded in the left and right directions, and the up and down directions. The folded children's stroller is small in size and easy to carry and transport. The unfolded children's stroller has a stable structure and the side brackets The small number of components makes the structure of the vehicle frame simple and light.

Description of drawings

Fig. 1 is the front view of the utility model children's stroller when it is in the unfolded state;

Fig. 2 is the front view of the utility model when the children's stroller is folded;

Fig. 3 is a top view of the utility model when the children's stroller is folded;

Fig. 4 is a three-dimensional structural schematic diagram of the utility model when the children's stroller is folded;

Fig. 5 is a dismantling diagram of the children's stroller of the present invention;

Fig. 6 is a front view of the utility model when the children's stroller is in a folded state;

Among them: 1. Front bracket; 2. Seat rod; 3. Rear bracket; 4. Push rod; 5. Bottom bracket; 6. Rear bracket; 10. Backrest assembly; 31. Upper pole; 32. Lower pole; 33. Spring; 51. First bottom bar; 52. Second bottom bar; 53. Third bottom bar; 54. Fourth bottom bar; 61 , the main strut; 62, the sliding part; 63, the pedal part; 101, the first connecting rod; 102, the second connecting rod; 103, the third connecting rod; 104, the fourth connecting rod; 105, the fifth connecting rod 106, the sixth connecting rod; 107, the seventh connecting rod; 108, the eighth connecting rod; 109, the ninth connecting rod; 110, the tenth connecting rod; 200, the front wheel assembly; 300, the rear wheel assembly.

detailed description

As shown in Figures 1 to 6, a children's stroller described in the present invention includes a frame with an unfolded state and a folded state, a front wheel assembly 200 arranged at the front under the frame, and a front wheel assembly 200 arranged under the frame. Two rear wheel assemblies 300 on the left and right sides of the rear. The vehicle frame includes two side brackets arranged along the left and right directions, a bottom bracket 5 arranged at the lower part of the two side brackets, and a rear bracket 6 arranged at the rear of the two side brackets.

The side support includes a front support 1 , a seat post 2 , a rear support 3 and a push rod 4 whose lower part is rotatably connected to the front wheel assembly 200 . In this embodiment, the front bracket 1 can not only rotate up and down, but also rotate relative to the front wheel assembly 200 to the inside/outside of the frame.

The seat bar 2 is in the shape of an arc bar bent downwards, the front part of the seat bar 2 is pivotally connected to the front bracket 1 , and the rear part is pivotally connected to the rear wheel assembly 300 . The bottom of the push rod 4 is rotatably connected with the top of the front bracket 1 , the top of the rear bracket 3 is rotatably connected with the push rod 4 , and the bottom of the rear bracket 3 is rotatably connected with the seat bar 2 . The front bracket 1, the seat bar 2, the rear bracket 3 and the push rod 4 constitute a four-bar linkage mechanism. Wherein, the rear bracket 3 includes an upper strut 31 and a lower strut 32 . The upper part of the upper strut 31 is rotatably connected with the push rod 4, the lower part of the lower strut 32 is rotatably connected with the seat post 2, the upper part of the lower strut 32 has a hollow lumen, and the upper strut 31 Inserted in the lumen of the lower pole 32 and can slide up and down in the lumen, the upper pole 31 is also sleeved with a spring 33, the top of the spring 33 is against the upper pole 31, the spring 33 The lower part is against the lower pole 32 , and when the upper pole 31 slides up and down in the lumen of the lower pole 32 , the spring 33 expands and contracts with the sliding of the upper pole 31 . In this way, the rear bracket 3 can form a shock-absorbing structure, so that the baby stroller has little vibration and smooth operation during use, greatly improving the comfort of the child sitting in the baby stroller.

The front part of the bottom bracket 5 is rotatably connected to the front wheel assembly 200, the rear part of the bottom bracket 5 is rotatably connected to the seat post 2, and the bottom bracket 5 can be unfolded and moved along the front, rear, left and right directions of the vehicle frame. shrink. Specifically, the bottom bracket 5 includes a first bottom bar 51 , a second bottom bar 52 , a third bottom bar 53 and a fourth bottom bar 54 . The front part of the first bottom bar 51, the front part of the second bottom bar 52 and the front wheel assembly 200 are connected to each other through a pivot, and the first bottom bar 51 and the second bottom bar 52 can only move toward In-frame and out-of-frame direction turns. The rear part of the first bottom bar 51 is pivotally connected with the front part of the third bottom bar 53, the rear part of the second bottom bar 52 is pivotally connected with the front part of the fourth bottom bar 54, and the third bottom bar 53 is pivotally connected with the front part of the fourth bottom bar 54. The bottom bar 53 and the fourth bottom bar 54 cross each other and are hinged at the intersection, the rear part of the third bottom bar 53 is pivotally connected with the seat bar 2 on the right side, and the rear part of the fourth bottom bar 54 is connected with the seat bar 2 on the right side. The left seat bar 2 is pivotally connected, and the first bottom bar 51 , the second bottom bar 52 , the third bottom bar 53 and the fourth bottom bar 54 form a four-bar linkage mechanism.

In this embodiment, the connection between the third bottom bar 53 and the seat post 2 on the right side and between the fourth bottom post 54 and the seat post 2 on the left side are respectively connected by a connecting piece 7 . The connecting piece 7 has an L-shaped bending structure, the seat bar 2 is pivotally connected to the upper edge of the connecting piece 7, and the third bottom bar 53/fourth bottom bar 54 is connected to the connecting piece 7. The lower flap is connected by a pivot.

The rear bracket 6 is located between the two rear brackets 3 and is rotatably connected with the two rear brackets 3 respectively. The rear bracket 6 can expand and contract along the left and right directions of the vehicle frame. Specifically, the rear support frame 6 includes a main support rod 61, a slider 62 slidably arranged on the main support rod 61, a first connecting rod 101, a second connecting rod 102, a third connecting rod 103, a Four links 104 , fifth links 105 and sixth links 106 . The main strut 61 and the rear bracket 3 are parallel to each other, and the sliding member 62 is sheathed on the main strut 61 and can slide up and down along the extending direction of the main strut 61 . The first connecting rod 101 and the second connecting rod 102 are respectively arranged on the left and right sides of the main support rod 61 , and the upper part of the first connecting rod 101 and the upper part of the second connecting rod 102 are respectively connected to the slider 62 in rotation. The third connecting rod 103 and the fourth connecting rod 104 are arranged on the left and right sides of the main strut 61 respectively, and the upper part of the third connecting rod 103 and the upper part of the fourth connecting rod 104 are respectively rotatably connected with the lower part of the main strut 61 . The lower part of the first connecting rod 101 , the lower part of the third connecting rod 103 and the left rear bracket 3 are rotatably connected to each other through a pivot. The lower part of the second connecting rod 102, the lower part of the fourth connecting rod 104 and the right rear bracket 3 are rotatably connected to each other through a pivot. The first connecting rod 101, the third connecting rod 103 and the main strut 61 form a triangular three-link mechanism, and the second connecting rod 102, the fourth connecting rod 104 and the main strut 61 also form a triangular three-link mechanism. rod mechanism. The triangular three-link mechanism can ensure the structural stability of the frame when it is unfolded and folded.

The fifth connecting rod 105 and the sixth connecting rod 106 are arranged on the left and right sides of the main strut 61 respectively. The upper part of the fifth connecting rod 105, the upper part of the sixth connecting rod 106 and the upper part of the main strut 61 are connected to each other through a pivot, and the lower part of the fifth connecting rod 105 is connected to the rear bracket 3 on the left side. Rotationally connected, the bottom of the sixth connecting rod 106 is rotationally connected with the rear bracket 3 on the right side, and the third connecting rod 103, the fifth connecting rod 105, the main strut 61 and the rear bracket 3 on the left side form a quadrilateral In the four-bar linkage mechanism, the fourth link 104 , the sixth link 106 , the main strut 61 and the right rear bracket 3 also constitute a quadrilateral four-bar linkage. In this way, the two four-bar linkages can ensure the structural strength and stability of the rear brace 6 .

A locking mechanism (not shown) is provided between the slider 62 and the main strut 61. When the locking mechanism is in the locked state, the slider 62 and the main strut 61 are fixed to each other; when the locking mechanism is in the unlocked state , the sliding member 62 can slide freely on the main strut 61 . The locking mechanism is capable of locking the vehicle frame in the unfolded state.

The lower part of the main strut 61 is fixedly provided with a pedal member 63, and the pedal member 63 protrudes backward on the main strut 61, and kicking and pulling the pedal member 63 upwards can shrink the rear support 6, and downward Pressing the pedal member 63 can expand the rear stand 6 .

In addition, the vehicle frame also includes a backrest assembly 10 arranged between the two seat posts 2 . The backrest assembly 10 includes a left backrest bar 8 that is rotatably connected to the seat bar 2 on the left side, a right backrest bar 9 that is rotatably connected to the seat bar 2 on the right side, a seventh connecting rod 107, an eighth connecting rod 108, and a ninth connecting rod 107. The connecting rod 109 and the tenth connecting rod 110 . The upper part of the seventh connecting rod 107 is rotatably connected with the upper part of the ninth connecting rod 109 , and the lower part of the seventh connecting rod 107 is rotatably connected with the left backrest bar 8 . The upper part of the eighth connecting rod 108 is rotatably connected with the upper part of the tenth connecting rod 110 , and the lower part of the eighth connecting rod 108 is rotatably connected with the right backrest bar 9 . The ninth connecting rod 109 and the tenth connecting rod 110 intersect each other and are hinged at the intersection. Backrest bar 8 is rotatably connected. The backrest assembly 10 can be unfolded and folded along the left and right directions of the vehicle frame.

When the vehicle frame is in the unfolded state, the front wheel assembly 200 and the rear wheel assembly 300 are close to each other along the front-rear direction, and the two rear wheel assemblies 300 are far away from each other along the left-right direction. The line connecting the front wheel assembly 200 and the two rear wheel assemblies 300 is an isosceles triangle. The bottom bracket 5 shrinks in the front-back direction, that is, the first bottom bar 51 and the second bottom bar 52 are unfolded in a herringbone shape, the third bottom bar 53 and the fourth bottom bar 54 are driven to expand, and the bottom bracket 5. The distance in the front-back direction as a whole is shortened, and the distance in the left-right direction is increased. The front bracket 1 and the seat post 2 are driven by the bottom bracket 5 to move upward and away from the bottom bracket 5 . The rear bracket 6 is unfolded along the left and right directions, and the two rear brackets 3 are driven by the rear bracket 6 to expand outwards along the left and right directions away from each other, the locking mechanism is in a locked state, and the push rod 4 is stretched upward to stand Above the front support 1 and the rear support 3. The backrest assembly 10 is also deployed along the left-right direction, and the left backrest bar 8 and the right backrest bar 9 stand obliquely on the two seat bars 2 .

When the vehicle frame is in the folded state, the front wheel assembly 200 and the rear wheel assembly 300 are far away from each other along the front and rear directions, and the two rear wheel assemblies 300 are close to each other along the left and right directions. The bottom bracket 5 is unfolded in the front-rear direction, that is, the first bottom bar 51 and the second bottom bar 52 are turned inwardly to move closer to each other, and the third bottom bar 53 and the fourth bottom bar 54 are driven to rotate and move closer to each other. , the distance in the front-back direction of the bottom bracket 5 as a whole is extended. The front bracket 1 and the seat post 2 are driven by the bottom bracket 5 to move downwards and move closer to the bottom bracket 5 . The rear bracket 6 shrinks in the left and right directions, and the two rear brackets 3 move closer to each other in the left and right directions driven by the rear bracket 6, and the push rod 4 rotates forward to move closer to the front bracket 1. Driven by the push rod 4, it rotates forward and moves closer to the push rod 4.

When folding the stroller in the unfolded state, first unlock the locking mechanism, kick and pull the pedal member 63 upwards, the main strut 61 moves upwards, the first connecting rod 101 to the sixth connecting rod 106 all rotate downwards, and then the two Two rear brackets 3 are pulled close to each other, and push rod 4 is pushed forward, and push rod 4 rotates forward and moves closer to front bracket 1, and front bracket 1 rotates downwards, and two front brackets 1 rotate inwards and move closer simultaneously. The seat bar 2 rotates downwards with the front bracket 1 and moves closer to the bottom bracket 5, while the two seat bars 2 move closer to each other with the two rear supports 3. Back support 3 rotates forward under the drive of push rod 4. The bottom bracket 5 moves under the drive of the two seat bars 2, the first bottom bar 51 and the second bottom bar 52 move closer to each other, the third bottom bar 53 and the fourth bottom bar 54 move closer to each other, and the front wheel assembly 200 forward movement. In addition, the left backrest bar 8 and the right backrest bar 9 move closer to each other under the drive of the two seat bars 2 . Finally, the bottom bracket 5, the front bracket 1, the seat bar 2, the push rod 4 and the rear bracket 3 are close to each other and lie flat above the ground, and the stroller is completely folded.

When the folded stroller is opened, the push rod 4 is first lifted upwards, the front bracket 1 and the seat post 2 are driven to rotate upwards, and the rear bracket 3 is also driven to rotate backwards, so that the side brackets are launched. Step on the pedal 63 downwards, the main strut 61 moves downward, the first connecting rod 101 to the sixth connecting rod 106 all rotate upwards, and then the two rear brackets 3 are pulled to expand each other, and the two front brackets 1 rotate outwards , the two rear wheel assemblies 300 are deployed away from each other, the front wheel assembly 200 moves backward, the third bottom bar 53 and the fourth bottom bar 54 are mutually expanded, and the first bottom bar 51 and the second bottom bar 52 are driven to expand mutually In addition, the left backrest bar 8 and the right backrest bar 9 are driven by the two seat bars 2 to move away from each other, and finally the children's stroller is opened.

In the utility model, the rear support frame 6 that can be expanded and contracted left and right can drive the two side supports to expand and fold along the left and right directions, and the bottom support frame 5 that can be expanded and contracted forward and backward can be used to drive the two side supports along the left and right directions. Unfolding and folding, the connecting rod structure of the push rod 4, the front support 1, the seat post 2 and the rear support 3 in the side support enables the push rod 4, the front support 1, the seat post 2 and the rear support 3 to move when the vehicle frame is folded. Relatively rotate and close to fold. When the children's stroller described in the utility model is folded, the frame is close to each other and folded in the left and right directions, and the up and down directions. The folded children's stroller is small in size and easy to carry and transport. The unfolded children's stroller has a stable structure and the side brackets The small number of components makes the structure of the vehicle frame simple and light.

As mentioned above, we have fully described according to the purpose of the utility model, but the utility model is not limited to the above-mentioned embodiment and implementation method. Practitioners in the relevant technical fields can make different changes and implementations within the scope permitted by the technical ideas of the present utility model.

Claims (10)

1. a kind of children trolley, including the vehicle frame with deployed condition and folded state, the front-wheel for being arranged on vehicle frame lower front portion Component（200）, set up two wheel assemblies in the vehicle frame lower rear left and right sides separately（300）, it is characterised in that：The vehicle frame bag Include two side stands set in left-right direction, be arranged on the bottom bracing frame of two side stand bottoms（5）It is collateral with being arranged on two The back pole-bracket at frame rear portion（6）,

The side stand includes bottom and front component（200）The fore-stock of connection（1）, rear portion and wheel assembly（300）Rotate The seat post of connection（2）, after-poppet（3）And push rod（4）, the seat post（2）Front portion and fore-stock（1）Rotate connection, institute State push rod（4）Bottom and fore-stock（1）Top rotate connection, the after-poppet（3）Top and push rod（4）The company of rotation Connect, the after-poppet（3）Bottom and seat post（2）Rotate connection；

The bottom bracing frame（5）Front portion and front component（200）Rotate connection, the bottom bracing frame（5）Rear portion and seat post（2） Rotate connection, the bottom bracing frame（5）It can deploy along before and after vehicle frame with left and right directions and contraction；

The back pole-bracket（6）Positioned at two after-poppets（3）Between and respectively with two after-poppets（3）Rotate connection, the back brace Frame（6）It can deploy and shrink along the left and right directions of vehicle frame；

When vehicle frame is in deployed condition, the front component（200）And wheel assembly（300）Mutually draw close along the longitudinal direction, Two wheel assemblies（300）Between be located remotely from each other in left-right direction, the bottom bracing frame（5）Shrink along the longitudinal direction, the preceding branch Frame（1）And seat post（2）In bottom bracing frame（5）Drive under move upwards, the back pole-bracket（6）Deploy in left-right direction, two After-poppet（3）In back pole-bracket（6）Drive under be located remotely from each other outside expansion, the push rod in left-right direction（4）Stretch upwards support Stand in fore-stock（1）And after-poppet（3）Top；

When vehicle frame is in folded state, the front component（200）And wheel assembly（300）It is located remotely from each other along the longitudinal direction, two Individual wheel assembly（300）Between mutually draw close in left-right direction, the bottom bracing frame（5）Deploy along the longitudinal direction, the fore-stock （1）And seat post（2）In bottom bracing frame（5）Drive under move downward, the back pole-bracket（6）Shrink in left-right direction, after two Support（3）In back pole-bracket（6）Drive under mutually draw close in left-right direction, the push rod（4）Rotate forward and fore-stock（1）Lean on Hold together, the after-poppet（3）In push rod（4）Drive under forward rotate and push rod（4）Draw close.

2. a kind of children trolley according to claim 1, it is characterised in that：The bottom bracing frame（5）Including the first bottom bar （51）, the second bottom bar（52）, the 3rd bottom bar（53）With the 4th bottom bar（54）, first bottom bar（51）Front portion, the second bottom bar （52）Front portion and front component（200）Three mutually rotates connection, first bottom bar by a pivot（51）Rear portion with 3rd bottom bar（53）Anterior pivotally connected, second bottom bar（52）Rear portion and the 4th bottom bar（54）Anterior pivot connect Connect, the 3rd bottom bar（53）With the 4th bottom bar（54）Intersect and be hinged in infall, the 3rd bottom bar（53） Rear portion and right side seat post（2）It is pivotally connected, the 4th bottom bar（54）Rear portion and left side seat post（2）Pivot connects Connect, first bottom bar（51）, the second bottom bar（52）, the 3rd bottom bar（53）With the 4th bottom bar（54）Constitute quadric chain.

3. a kind of children trolley according to claim 2, it is characterised in that：3rd bottom bar（53）With the seat on right side Bar（2）Between and the 4th bottom bar（54）With the seat post in left side（2）Between pass through a connection piece respectively（7）Connection, the company Fitting（7）L-shaped bending structure, the seat post（2）With connector（7）Upper hem rotate connection, the 3rd bottom bar （53）/ the four bottom bar（54）With connector（7）Lower hem rotate connection.

4. a kind of children trolley according to claim 1, it is characterised in that：The fore-stock（1）Front portion and front wheels Part（200）Mutually rotate connection, the fore-stock（1）Can not only rotate upwardly and downwardly can also opposing front wheels component（200）To car In frame/vehicle frame outside rotate.

5. a kind of children trolley according to claim 1, it is characterised in that：The back pole-bracket（6）Including main supporting rod（61）、 It is slidably disposed on main supporting rod（61）On sliding part（62）, first connecting rod（101）, second connecting rod（102）, third connecting rod （103）And fourth link（104）, the main supporting rod（61）With after-poppet（3）It is parallel to each other, the sliding part（62）Can be along master Strut（61）Bearing of trend slide up and down, the first connecting rod（101）And second connecting rod（102）Set up separately in main supporting rod（61）It is left Right both sides, the first connecting rod（101）Top and second connecting rod（102）Top respectively with sliding part（62）Rotate connection, The third connecting rod（103）And fourth link（104）Set up separately in main supporting rod（61）The left and right sides, the third connecting rod（103）'s Top and fourth link（104）Top respectively with main supporting rod（61）Lower rotational connection, the first connecting rod（101）Under Portion, third connecting rod（103）Bottom and left side after-poppet（3）Connection, the second connecting rod are mutually rotated by a pivot （102）Bottom, fourth link（104）Bottom and right side after-poppet（3）Connection, described are mutually rotated by a pivot One connecting rod（101）, third connecting rod（103）And main supporting rod（61）Triangle three-link mechanism, the second connecting rod （102）, fourth link（104）And main supporting rod（61）Also triangle three-link mechanism.

6. a kind of children trolley according to claim 5, it is characterised in that：The back pole-bracket（6）Also include setting up separately in master Strut（61）5th connecting rod of the left and right sides（105）With six-bar linkage（106）, the 5th connecting rod（105）Top, the 6th connect Bar（106）Top and main supporting rod（61）Top three connection, the 5th connecting rod are mutually rotated by a pivot（105）'s Bottom and the after-poppet in left side（3）Rotate connection, the six-bar linkage（106）Bottom and right side after-poppet（3）The company of rotation Connect, the third connecting rod（103）, the 5th connecting rod（105）, main supporting rod（61）With the after-poppet in left side（3）Constitute the four of quadrangle Linkage, the fourth link（104）, six-bar linkage（106）, main supporting rod（61）With the after-poppet on right side（3）Also four are constituted The quadric chain of side shape.

7. a kind of children trolley according to claim 5, it is characterised in that：The sliding part（62）With main supporting rod（61）It Between be provided with locking mechanism, when locking mechanism is in the lock state, the sliding part（62）With main supporting rod（61）Interfix； When locking mechanism is in released state, the sliding part（62）Can be in main supporting rod（61）On slidably.

8. a kind of children trolley according to claim 5, it is characterised in that：The main supporting rod（61）Bottom be fixedly installed There is a pedal part（63）, the pedal part（63）To rear projection in main supporting rod（61）On, kick to transport persons or goods by cart upwards and pedal part（63）It can make Back pole-bracket（6）Shrink, presser feet is pedaled downwards and pedals part（63）Back pole-bracket can be made（6）Expansion.

9. a kind of children trolley according to claim 1, it is characterised in that：The after-poppet（3）Including upper rack posts（31） And lower fulcrum bar（32）, the upper rack posts（31）Top and push rod（4）Rotate connection, the lower fulcrum bar（32）Bottom and seat Bar（2）Rotate connection, the lower fulcrum bar（32）Top there is hollow tube chamber, the upper rack posts（31）It is inserted in lower fulcrum bar （32）Tube chamber in and can be slided up and down in tube chamber, the upper rack posts（31）On be also arranged with spring（33）, the spring （33）Top and upper rack posts（31）Offset, the spring（33）Bottom and lower fulcrum bar（32）Offset, work as upper rack posts（31） Lower fulcrum bar（32）Tube chamber in when sliding up and down, the spring（33）With upper rack posts（31）Slip and stretch.

10. a kind of children trolley according to claim 1, it is characterised in that：The vehicle frame also includes being arranged on two seats Position bar（2）Between backrest module（10）, the backrest module（10）Including the seat post with left side（2）The left side for rotating connection is leaned on Carry on the back bar（8）And the seat post on right side（2）Rotate the right back support bar of connection（9）, seven-link assembly（107）, the 8th connecting rod（108）, Nine connecting rods（109）With the tenth connecting rod（110）, the seven-link assembly（107）Top and the 9th connecting rod（109）Top rotate connect Connect, the seven-link assembly（107）Bottom and left back support bar（8）Rotate connection, the 8th connecting rod（108）Top and the tenth Connecting rod（110）Top rotate connection, the 8th connecting rod（108）Bottom and right back support bar（9）Rotate connection, the described 9th Connecting rod（109）With the tenth connecting rod（110）Intersect and be hinged in infall, the 9th connecting rod（109）Bottom with Right back support bar（9）Rotate connection, the tenth connecting rod（110）Bottom and left back support bar（8）Rotate connection.