CN205854242U - A kind of children trolley - Google Patents

Abstract

The utility model relates to a stroller for children. The side brackets of the stroller all include a front support rod, a rear support rod push rod, a side rod, a side rod connecting rod, a seat post, a seat post connecting rod, and a backrest rod. The front part of the seat post is pivotally connected with the front support rod, the rear part is connected with the side bar through the second sliding part, and a post connecting part is fixedly arranged on the seat post. The front portion of the seatpost linkage is pivotally connected to the front strut and the rear portion is pivotally connected to the lower portion of the seatpost linkage. The lower portion of the back bar is pivotally connected to the upper portion of the seat post connector. When the frame is folded, the push rod slides down along the front support rod and gathers relative to the front support rod. The side rod drives the rear end of the seat post to turn upward relative to the front support rod. The rods are stowed together between the front struts and the rear struts. The folding operation of the children's stroller frame is simple and easy.

Description

a stroller for children

technical field

The utility model belongs to the field of children's products, in particular to a children's cart.

Background technique

At present, the children's stroller in the prior art includes a vehicle frame having an unfolded state and a folded state, a wheel assembly arranged at the bottom of the vehicle frame, and a locking mechanism for locking the vehicle frame in the unfolded state. There are many types of existing children's strollers, the number of frame rods is different, and the connection positions between the rods are also different, so the folding principles and folding methods are also different, and the states of the folded frames are also different accordingly. , and the ease of use also varies.

In addition, on various existing strollers for children, the seatpost and the backrest on the frame are often close to each other after the frame is folded, and the backrest will lean forward under the stacking and extrusion of other rods. After the rod is folded, there is still a certain amount of room for movement, and it will shake and be unstable during the transportation and carrying of the frame. When the frame is folded and placed standing, the backrest bar will lean forward due to external force.

Utility model content

The technical problem to be solved by the utility model is to provide a children's stroller with a flexible frame and a stable and self-supporting frame after folding.

In order to solve the above-mentioned technical problems, a technical solution adopted by the utility model is: a kind of stroller for children, comprising a vehicle frame in an unfolded state and a folded state, and a locking mechanism for locking the vehicle frame in the unfolded state, The vehicle frame includes two side brackets located on the left and right sides respectively, and a strut assembly arranged between the two side brackets. Said side brackets on each side consist of:

a front strut, the bottom of which is provided with a front wheel assembly;

a rear strut, the bottom of which is provided with a rear wheel assembly;

a push rod, the lower part of the push rod is slidably arranged along the length extension direction of the front support rod, and the upper part of the rear support rod is pivotally connected with the push rod;

a side rod, the side rod extends along the front-rear direction, the front part of the side rod is pivotally connected to the front support rod, and the rear part of the side rod is connected to the rear support rod through a first sliding member;

a side rod connecting rod, one end of the side rod connecting rod is pivotally connected to the side rod, and the other end of the side rod connecting rod is pivotally connected to the rear support rod;

a seat post extending in a front-rear direction, the front portion of the seat post is pivotally connected to the front strut, the rear portion of the seat post is connected to the side post through a second slider, the A rod connector is fixed on the seat post;

a seat post connecting rod extending in a front-to-rear direction, a front portion of the seat post connecting rod being pivotally connected to the front strut, a rear portion of the seat post connecting rod being pivotally connected to a lower portion of the seat post connecting member shaft connection;

a backrest rod, the lower part of the backrest rod is pivotally connected to the upper part of the seatpost connector, and the backrest rod stands above the seatpost;

When the vehicle frame is in the unfolded state, on the side brackets on each side, a triangular structure is formed among the push rods, front support rods, rear support rods and side rods, and the side rods, side rod connecting rods Another triangular structure is formed between the rear support rod and the rear support rod; when the vehicle frame is folded, the push rod slides down along the front support rod and gathers relative to the front support rod, and the rear end of the side rod slides upwards The rear support rod and the front support rod are folded in the front-rear direction, and at the same time, the rear end of the seat post is turned up relative to the front support rod and slides upward along the extending direction of the side rod along with the second slider, and the seat post is connected to A bar and back bar travel up with the seat post and are tucked together with the seat post between the front and rear struts.

Preferably, the seat post connecting member is fixedly arranged at the rear of the connection between the seat post and the front support rod, the seat post connecting rod is pivotally connected to the seat post connecting member through a third shaft, and the backrest rod is connected to the seat post connecting member through a fourth shaft Pivotally connected to the seatpost connector, the third axis is located below the fourth axis on the seatpost connector.

Further, the front part of the seat post is pivotally connected to the front support rod through the first shaft, the front end of the side rod is pivotally connected to the front support rod through the second shaft, and the front end of the seat post connecting rod is connected to the front support rod through the second shaft. The five shafts are pivotally connected to the front strut, and the first shaft, the fifth shaft and the second shaft are arranged from top to bottom along the length extension direction of the front strut.

Specifically, the lower end of the push rod is fixedly provided with a push rod sliding sleeve, and the push rod sliding sleeve is sleeved on the front support rod and can slide up and down along the length extension direction of the front support rod. The front strut is located above the first shaft.

Preferably, the first sliding member is a side rod sliding sleeve, the rear end of the side rod is pivotally connected to the side rod sliding sleeve, and the side rod sliding sleeve is sleeved on the rear support rod and can be moved along the rear support rod. The length extension direction slides up and down, the front end of the side rod connecting rod is pivotally connected with the middle part of the side rod, the rear end of the side rod connecting rod is pivotally connected with the rear support rod through the sixth shaft, and the sixth The shaft is located on the rear strut under the side bar sleeves.

Further, the second sliding part is a seat post sliding sleeve, the rear end of the seat post is pivotally connected with the seat post sliding sleeve through the eighth shaft, and the seat post sliding sleeve is sleeved on the side rod and can be The length extension direction of the rod slides up and down, the rear end of the side rod is pivotally connected with the side rod sliding sleeve through the seventh shaft, and the second shaft, the eighth shaft and the seventh shaft extend from the bottom along the length extension direction of the side rod. Arranged upwards.

Specifically, the locking mechanism includes a locking piece arranged between the side bar sliding sleeve and the rear support bar for locking the two, and the locking pieces on both sides are provided for locking the two The first unlocking handle for the synchronous unlocking of the locking piece.

Preferably, the side rod sliding sleeve is provided with a folding hook, and the upper part of the rear support rod is provided with a hook seat. When the vehicle frame is in a folded state, the push rod, front support rod, rear support rod and The side bars are close to each other and the folding hook is hooked in cooperation with the hook seat so that the vehicle frame is locked in the folded state.

Specifically, the brace assembly includes a bottom brace assembly disposed between the side brackets on both sides, the bottom brace assembly includes two bottom braces that intersect each other and are pivotally connected at the intersection, each The front end of the bottom stay is pivotally connected to the side rod on one side of the frame and the rear end is pivotally connected to the rear strut on the other side of the frame.

Preferably, the backrest bar has a sitting position state and a lying position state, and the stroller also includes a backrest bar locking mechanism capable of locking the backrest bar in the sitting position state, and the backrest bar locking mechanism includes a The lower locking piece and the bayonet provided on the seatpost connecting piece, the locking piece can slide up and down along the length extension direction of the backrest bar, when the locking mechanism is locked, the locking piece slides downwards and extends out of the lower end of the backrest bar and inserts The backrest bar is kept standing above the seatpost at the bayonet; when the locking mechanism is unlocked, the locking member slides upwards to separate from the bayonet, and the backrest bar can rotate back and forth.

The orientation words such as front, rear, left, right, up, and down mentioned above are defined in the normal use orientation 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: the rear support rod, the side rod, the side rod connecting rod and the first slider form a crank slider mechanism, and the front support rod, the side rod, the seat post Composing another crank slider mechanism with the second sliding member makes the folding operation and simple folding of the frame of the stroller easy. The seat post, the back post and the seat post connecting rod are connected to each other through the seat post connecting piece, so that the back post of the stroller can maintain a good structural rigidity and positional relationship after the stroller is folded, and it can effectively prevent the back post and other components from being stacked on top of each other after the frame is folded. Together, it affects the smoothness of the frame opening.

Description of drawings

Accompanying drawing 1 is the three-dimensional view that the children's stroller of the present invention is in the unfolded state;

Accompanying drawing 2 is the side view of the children's stroller of the present utility model in the unfolded state;

Accompanying drawing 3 is the back view of the children's stroller of the present utility model in the unfolded state;

Accompanying drawing 4 is the side view of the children's stroller of the present invention in a half-folded state;

Accompanying drawing 5 is the side view of the children's stroller of the present utility model in a folded state;

Accompanying drawing 6 is the sectional view of Fig. 4;

Accompanying drawing 7 is the partially enlarged schematic diagram of place A in Fig. 6;

Among them: 1. Front support rod; 2. Rear support rod; 3. Push rod; 4. Side rod; 5. Side rod connecting rod; 6. Seat post; 7. Seat post connecting rod; 8. Backrest rod; 9. 1st sliding part; 10. Seat post connector; 11. Push rod sliding sleeve; 12. First unlocking handle; 13. Folding hook; 14. Hook seat; 15. Bottom support rod; 16. Sunshade rod; 17. Rear support assembly; 18, footboard; 19, backrest link assembly; 20, second sliding member; 21, first shaft; 22, second shaft; 23, third shaft; 24, fourth shaft; 25, Fifth axis; 26, sixth axis; 27, seventh axis; 28, eighth axis; 29, pin shaft; 30, front wheel assembly; 40, rear wheel assembly; 50, locking piece; 60, bayonet; 70 , The second unlock handle.

detailed description

The technical solution of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 5, a children's stroller shown in the utility model includes a vehicle frame in an unfolded state and a folded state, and a locking mechanism for locking the vehicle frame in the unfolded state. The vehicle frame includes two side brackets located on the left and right sides respectively, and a strut assembly arranged between the two side brackets. The strut assembly can be unfolded/folded along the left-right direction and arranged between the side supports on both sides to realize the unfolding/folding of the vehicle frame in the left-right direction.

As shown in Figures 1 and 2, the side brackets on each side include: a front bracket 1, a rear bracket 2, a push rod 3, a side rod 4, a side rod connecting rod 5, a seat post 6, and a seat post connecting rod 7 and back bars.

The bottom of the front strut 1 is provided with a front wheel assembly 30 .

The bottom of the rear strut 2 is provided with a rear wheel assembly 40 .

The lower part of the push rod 3 is slidably arranged along the length extension direction of the front support rod 1 , and the upper part of the rear support rod 2 is pivotally connected with the push rod 3 . In this embodiment, the lower end of the push rod 3 of the push rod 3 shown is fixedly provided with a push rod sliding sleeve 11, and the push rod sliding sleeve 11 is sleeved on the front strut 1 and can be moved along the front strut 1. Slide up and down in the direction of length extension.

The side rod 4 extends along the front-rear direction, the front part of the side rod 4 is pivotally connected with the front strut 1 through the second shaft 22 , and the rear part of the side rod 4 is connected with the rear strut 2 through the first slider 9 . In this embodiment, the first sliding member 9 is a side rod sliding sleeve, the rear end of the side rod 4 is pivotally connected to the side rod sliding sleeve through the seventh shaft 27, and the side rod sliding sleeve is sleeved on the rear support. on the rod 2 and can slide up and down along the length extension direction of the rear support rod 2,

The front end of the side rod connecting rod 5 is pivotally connected to the middle part of the side rod 4 , and the rear end of the side rod connecting rod 5 is pivotally connected to the rear support rod 2 through the sixth shaft 26 . A slider crank mechanism is formed between the side bar 4 , the rear support bar 2 , the side bar sliding sleeve and the side bar connecting rod 5 . The side rod connecting rod 5 is located below the side rod 4 .

The seatpost 6 extends along the front-to-back direction, the front part of the seatpost 6 is pivotally connected with the front strut 1 through the first shaft 21, and the rear part of the seatpost 6 is connected with the said seatpost 6 through the second slider 20. Sidebar 4-pivot connection. In this embodiment, the second sliding member 20 is a seat post sliding sleeve, the rear end of the seat post 6 is pivotally connected to the seat post sliding sleeve through an eighth shaft 28, and the front support rod 1 and the side rod 4 1. The seat post 6 and the seat post sliding sleeve 20 constitute a slider crank mechanism, and the seat post sliding sleeve is sleeved on the side bar 4 and can slide up and down along the length extension direction of the side bar 4 . The seat post 6 is fixedly provided with a seat post connecting piece 10 . In this embodiment, the seat post connector is in a triangular shape, and the seat post connector 10 is fixedly arranged at the rear of the connection between the seat post 6 and the front strut 1 .

The seat post connecting rod 7 extends along the front-rear direction, and the front part of the seat post connecting rod 7 is pivotally connected to the front strut 1 through the fifth shaft 25 . The rear part of the seat post connecting rod 7 is pivotally connected with the lower part of the seat post connecting part 10 through the third shaft 23 .

The lower part of the backrest rod 8 is pivotally connected with the upper part of the seatpost connector 10 through the fourth shaft 24 , and the backrest rod 8 stands above the seatpost 6 .

The first shaft 21 , the fifth shaft 25 and the second shaft 22 are arranged from top to bottom along the length extension direction of the front strut 1 . The second shaft 22 , the eighth shaft 28 and the seventh shaft 27 are arranged sequentially from bottom to top along the length extension direction of the side bar 4 . The push rod sliding sleeve 11 is located above the first shaft 21 on the front strut 1 . The third axis 23 is located below the fourth axis 24 on the seatpost connection 10 . The sixth shaft 26 is located below the side rod sliding sleeve on the rear strut 2 .

As shown in FIGS. 6 and 7 , the backrest bar 8 has a sitting posture state and a lying posture state. The stroller also includes a backrest bar locking mechanism capable of locking the backrest bar 8 in a sitting position and a second unlocking handle 70 for unlocking the backrest bar locking mechanism. In this embodiment, the backrest rod 8 is a hollow pipe, and the lower end of the backrest rod 8 is open. The backrest rod locking mechanism includes a locking member 50 slidably arranged on the lower part of the backrest rod 8 and a bayonet 60 arranged on the seatpost connecting member 10 . The locking piece 50 is located inside the backrest bar 8 , and the locking piece 50 can slide up and down along the extending direction of the backrest bar 8 inside the backrest bar 8 . The locking member 50 is also connected with an elastic reset member (not shown). The elastic return member is arranged inside the backrest bar 8, and the elastic return member can be a spring. The bayonet 60 is disposed inside the seat post connector 10 , and the seat post connector 10 has an opening. When the locking mechanism is locked, the locking member 50 slides downwards and extends the lower end of the backrest rod 8 along the opening on the seatpost connector 10 into the seatpost connection 10 and is inserted into the bayonet 60 to make the backrest rod 8 Stay upright on the seat post 6. When the locking mechanism is unlocked, the locking member 50 slides upward to separate from the bayonet 60 , and the backrest bar 8 can rotate forward and backward. It is the lying posture state when the backrest bar 8 lies flat backward. The second unlocking handle 70 is installed on the backrest link assembly 19 , and the locking member 8 is connected with the second unlocking handle 70 through a traction cable (not shown). Pull the second unlocking handle 70, the second unlocking handle 70 can drive the locking member 50 to slide upward through the traction cable, loosen the second unlocking handle 70, the elastic reset member can drive the locking member 50 to slide down and reset and insert it at the bayonet 60 The backrest bar locking mechanism is locked.

The brace assembly includes a bottom brace assembly arranged between the side brackets on both sides. The bottom brace assembly includes two bottom braces 15 that cross each other and are pivotally connected at the intersection. The front end of each bottom strut 15 is pivotally connected to the side bar 4 on one side of the vehicle frame and its rear end is pivotally connected to the rear strut 2 on the other side of the vehicle frame. In this embodiment, the rear end of the bottom support rod 15 is pivotally connected to the lower part of the rear support rod 2 through a pin shaft 29 . And the pin shaft 29 is located below the sixth shaft 26 on the rear strut 2 . The strut assembly also includes a rear support assembly 17 that can be horizontally expanded and folded between the rear support rods 2 on both sides. Its structure will not be repeated here.

In addition, a footboard 18 is also provided between the bottoms of the front struts 1 on both sides, and the footboard 18 can be folded and folded in the left and right direction automatically when the side brackets on both sides move closer together in the left and right direction. A backrest link assembly 19 that can be expanded or folded horizontally is also provided between the backrest bars 8 on both sides. The backrest link assembly 19 and the backrest bars 8 on both sides jointly form a backrest frame for children to ride on.

On the children's stroller in this embodiment, the locking mechanism includes a locking member (not shown) provided between the side bar sliding sleeve and the rear support bar 2 for locking the two. The locking piece can adopt a structure in which a lock pin cooperates with a lock hole. The above-mentioned locking pieces are arranged between the side bar sliding sleeves on both sides and the rear support bar 2 . A first unlocking handle 12 for synchronously unlocking the two locking pieces is provided between the locking pieces on both sides. The side bar sliding sleeve is provided with a folding hook 13 , and the upper part of the rear support bar 2 is provided with a hook seat 14 . When the side rod sliding sleeve slides to the top of the rear strut 2 , the folding hook 11 and the hook seat 12 can cooperate with each other to hook so that the side rod sliding sleeve is fixedly located at the upper position of the rear strut 2 .

The stroller also includes a sunshade rod 16 arranged on the push rod 3 , and the sunshade rod 16 is pivotally connected with the push rod 3 . When the vehicle frame is in the unfolded state, the awning 16 stands on the push rod 3; when the vehicle frame is in the folded state, the awning rod 16 is folded upwards and folded close to the push rod 3.

When the stroller is in the unfolded state, the locking mechanism is locked. The two bottom braces 15 of the bottom brace assembly are relatively spread out, and the rear attachment brace assembly 17 is supported between the rear braces 2 on both sides along the left and right directions. On the side brackets on each side, the push rod 3 and the front strut 1 are relatively expanded and extend substantially along the same length direction. The push rod 3, the front strut 1, the rear strut 2 and the side strut 4 form a triangular structure. Another triangular structure is formed between the side bar 4 , the side bar connecting bar 5 and the rear support bar 2 . The seat post 6 extends in the front-rear direction and is stably supported between the front strut 1 and the side post 4 . The back bar 8 stands above the seat post 6 through the seat post connecting piece 10 . The seat post connecting rod 7 extends and unfolds below the seat post 6 along the front-rear direction.

When the baby stroller needs to be folded, the operator first unlocks the rear support assembly 17, and then pulls the first unlocking handle 12 upwards to unlock the locking pieces on both sides. This simultaneously drives the side rod sliding sleeves on both sides to slide up along the rear strut 2 . The rear end of the side bar 4 slides up, and under the simultaneous action of the side bar connecting rod 5, the side bar 4 drives the front strut 1 and the rear strut 2 to gradually move closer together along the front-rear direction. The push rod 3 slides down along the front support rod 1 through the push rod sliding sleeve 11 and gradually draws in relative to the front support rod 1 . Simultaneously, the rear end of the seatpost 6 turns upwards relative to the front strut 1 and slides upward along the extending direction of the sidebar 4 with the seatpost sliding sleeve. The rear end of the seatpost 6 moves upward gradually and drives the backrest rod 8 and the seatpost connecting rod 7 upward gradually through the seatpost connector 10, so that the seatpost 6, the seatpost connecting rod 7 and the backrest rod 8 are folded together between the front support rod 1 and the seatpost connecting rod 7. Between the rear struts 2. Due to the limiting effect of the seat post connecting rod 7 and the seat post connecting member 10 on the back bar 8, the back bar 8 stands above the seat bar 6 after being folded. When the vehicle frame is folded, the rear end of the side bar 4 slides up to drive the front support bar 1 and the rear support bar 2 to gradually move closer together in the front-rear direction. The bottom struts 15 are rotated to gradually close together, so that the side brackets on both sides gradually close together to realize the horizontal folding of the vehicle frame.

Finally, the front support rod 1, push rod 3, side rod 4, seat post 6, back rod 8 and rear support rod 2 on each side are gathered together along the front and rear direction, wherein the back rod 8 stands above the seat post 6 and is connected to the seat post. The rod 7 bears against the back bar 8 through the seat post connector 10 to maintain the position of the back bar 8 . The bottom support rod assembly, the rear attached support assembly 17, the footboard 18 and the backrest link assembly 19 are gathered between the side supports on both sides. At this time, the side bar sliding sleeve slides to the top of the rear strut 2, and the vehicle frame can be locked in the folded state by the cooperation of the folding hook 13 and the hook seat 14.

To sum up, in the children's stroller described in the utility model, the rear support rod 2, the side rod 4, the side rod connecting rod 5 and the first slider 9 form a crank slider mechanism, and the front support rod 1, the side rod 4, and the seat post 6 and the second slider 20 form another crank-slider mechanism so that the folding operation of the frame of the stroller is easy and simple, and the folded frame has a compact structure and a small volume. The seatpost 6, the backrest post 8 and the seatpost connecting rod 7 are connected to each other through the seatpost connecting part 10, and the limit effect of the seatpost connecting rod 7 and the seatpost connecting part 10 on the backrest post 8 makes the backrest of the stroller folded. The rod 8 can maintain good structural rigidity and positional relationship, and can effectively prevent the backrest rod 8 from being stacked with other components after the frame is folded and affect the smoothness of opening the frame. At the same time, the overall center of gravity of the vehicle frame is stable, and the vehicle frame can stand on the ground independently.

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 children trolley, including having the vehicle frame of deployed condition and folded state, for described vehicle frame is locked in expansion Locking mechanism under state, described vehicle frame includes laying respectively at two side stands of the left and right sides, being located at two described side stands Between strut assembly, it is characterised in that: the described side stand of every side all includes:

Front support rod (1), is provided with front component (30) bottom it；

Back stay (2), is provided with wheel assembly (40) bottom it；

Push rod (3), the bottom of described push rod (3) is mounted slidably along the length bearing of trend of described front support rod (1), described after The top of pole (2) is pivotally connected with push rod (3)；

Side lever (4), described side lever (4) extends along the longitudinal direction, and anterior and described front support rod (1) pivot of described side lever (4) is even Connecing, the rear portion of described side lever (4) is connected with back stay (2) by the first sliding part (9)；

Side lever connecting rod (5), one end of described side lever connecting rod (5) is pivotally connected with described side lever (4), described side lever connecting rod (5) the other end is pivotally connected with described back stay (2)；

Seat bar (6), described seat bar (6) extends along the longitudinal direction, and anterior and described front support rod (1) pivot of described seat bar (6) is even Connecing, the rear portion of described seat bar (6) is connected with described side lever (4) by the second sliding part (20), and described seat bar (6) is fixed with One joint element for bar (10)；

Seat bar connecting rod (7), described seat bar connecting rod (7) extends along the longitudinal direction, and the front portion of described seat bar connecting rod (7) is with front Pole (1) is pivotally connected, and the rear portion of described seat bar connecting rod (7) is connected with the lower pivot of seat joint element for bar (10)；

Back support bar (8), the bottom of described back support bar (8) is connected with the upper pivot of described seat joint element for bar (10), described backrest Bar (8) stands in the top of a bar (6)；

When described vehicle frame is in deployed condition, on the described side stand of every side, described push rod (3), front support rod (1), prop up afterwards Triangle structure between bar (2) and side lever (4), is constituted between described side lever (4), side lever connecting rod (5) and back stay (2) Another triangular structure；When described vehicle frame folding, described push rod (3) along described front support rod (1) glide and with described front support rod (1) relatively draw in, the rear end of described side lever (4) is slided and makes described back stay (2), front support rod (1) draw in along the longitudinal direction, with The most described front support rod in the rear end (1) of Shi Suoshu seat bar (6) is flipped up and prolongs along side lever (4) length with the second sliding part (20) Stretch direction upward sliding, described seat bar connecting rod (7) and back support bar (8) up with described seat bar (6) and with described seat bar (6) Rise and draw between described front support rod (1) and back stay (2).

Children trolley the most according to claim 1, it is characterised in that: described seat joint element for bar (10) is fixedly installed present bar (6) with the rear portion of front support rod (1) junction, described seat bar connecting rod (7) is by the 3rd axle (23) and seat joint element for bar (10) pivot Axle connects, and described back support bar (8) is pivotally connected with seat joint element for bar (10) by the 4th axle (24), and described 3rd axle (23) is present The lower section of described 4th axle (24) it is positioned on joint element for bar (10).

Children trolley the most according to claim 2, it is characterised in that: the first axle (21) is passed through in the front portion of described seat bar (6) Pivotally connected with front support rod (1), the front end of described side lever (4) is pivotally connected with front support rod (1) by the second axle (22), described seat The front end of bar connecting rod (7) is pivotally connected with front support rod (1) by the 5th axle (25), described first axle (21), the 5th axle (25) Arrange from top to bottom along the length bearing of trend of described front support rod (1) with the second axle (22).

Children trolley the most according to claim 3, it is characterised in that: the lower end of described push rod (3) is fixedly provided with push rod Sliding sleeve (11), described push rod sliding sleeve (11) is set on front support rod (1) and can be upper and lower along the length bearing of trend of front support rod (1) Sliding, described push rod sliding sleeve (11) is positioned at the top of the first axle (21) on described front support rod (1).

Children trolley the most according to claim 1, it is characterised in that: described first sliding part (9) is side lever sliding sleeve, described The rear end of side lever (4) is pivotally connected with side lever sliding sleeve, and described side lever sliding sleeve is set on back stay (2) and can be along back stay (2) length bearing of trend slides up and down, and the front end of described side lever connecting rod (5) is pivotally connected with the middle part of described side lever (4), The rear end of described side lever connecting rod (5) is pivotally connected with back stay (2) by the 6th axle (26), and described 6th axle (26) is described The lower section of described side lever sliding sleeve it is positioned on back stay (2).

Children trolley the most according to claim 5, it is characterised in that: described second sliding part (20) is seat bar sliding sleeve, institute State the rear end of a bar (6) pivotally connected with seat bar sliding sleeve by the 8th axle (28), described seat bar sliding sleeve be set in side lever (4) go up and Can slide up and down along the length bearing of trend of side lever (4), the second axle (22) and front support rod are passed through in the front end of described side lever (4) (1) pivotally connected, the rear end of described side lever (4) is pivotally connected with side lever sliding sleeve by the 7th axle (27), described second axle (22), 8th axle (28) and the 7th axle (27) are arranged in order from the bottom up along the length bearing of trend of side lever (4).

Children trolley the most according to claim 5, it is characterised in that: described locking mechanism includes being located at described side lever sliding sleeve And for the locking piece that both are locked between described back stay (2), it is provided with between the described locking piece of both sides for by two institutes State the first unblock handle (12) of locking piece synchronizing unlocking.

Children trolley the most according to claim 5, it is characterised in that: described side lever sliding sleeve is provided with Foldable hanging hook (13), The top of described back stay (2) is provided with hook base (14), when described vehicle frame is in folded state, and described push rod (3), front support rod (1), back stay (2) and side lever (4) mutually draw close and described Foldable hanging hook (13) match hook with described hook base (14) and Described vehicle frame is locked in a folded configuration.

Children trolley the most according to claim 1, it is characterised in that: described strut assembly includes being located at described in both sides collateral Bottom supporting rod assembly between frame, described bottom supporting rod assembly includes the two foundation struts intersecting and connecting at infall phase pivot (15), the side lever (4) of the front end of every described bottom supporting rod (15) and vehicle frame side is pivotally connected and its rear end and vehicle frame opposite side Back stay (2) pivotally connected.

10. according to the arbitrary described children trolley of claim 1 to 9, it is characterised in that: described back support bar (8) has sitting posture shape State and lying posture state, described children trolley also includes the back support bar locking mechanism that back support bar (8) can be locked in sitting posture state, Described back support bar locking mechanism includes the locking piece (50) being slidably disposed on back support bar (8) bottom and arranges the connection of present bar The bayonet socket (60) of (10) on part, described locking piece (50) can slide up and down along back support bar (8) length bearing of trend, when locking machine During structure locking, described locking piece (50) slide downward is stretched out back support bar (8) bottom and is inserted in described bayonet socket (60) place and makes to lean on Back of the body bar (8) keeps standing in a bar (6) top；When locking mechanism unlocks, described locking piece (50) upward sliding and bayonet socket (60) Separating, described back support bar (8) can front and back rotate.