CN103057576B - A kind of children trolley - Google Patents

Abstract

A stroller for children, the stroller frame includes a left front frame, a right front frame whose lower part is rotatable with the lower part of the left front frame, a left rear frame which is rotatably set with the left front frame, and a right rear frame which is rotatably set with the right front frame frame, rear support frame , the rear support frame is crossed by the left rear support rod and the right rear support rod and pivotally connected by the third rotating shaft at the intersection , the rear support frame can be rotatably arranged on the left front frame, the right front frame, the left Between the rear frame and the right rear frame. When the cart frame is converted from the unfolded position to the folded position, the size of the rear support frame shrinks in the left and right width directions, allowing the left front frame and the right front frame to move closer together, and the size of the rear support frame in the up and down height direction changes. Long, so that the bottom of the left rear frame and the bottom of the right rear frame move down respectively, and then the left front frame, the right front frame, and the rear support frame are moved closer to each other, and the cart frame structure is simple.

Description

a stroller for children

technical field

The invention relates to a stroller for children.

Background technique

The children's stroller in the prior art includes a stroller frame with an unfolded position and a folded position, a front wheel assembly, a left rear wheel assembly, and a right rear wheel assembly for locking the stroller frame in the unfolded position The lower locking mechanism and the seat arranged on the cart frame. There are many types of existing trolley frames, the number of rods of the cart frame is different, and the connection relationship and connection position between the rods are different, so the folding principles and folding methods are different.

Contents of the invention

The technical problem to be solved by the present invention is to provide a stroller for children.

In order to solve the above technical problems, a technical solution adopted by the present invention is: a children's stroller, including a stroller frame with an unfolded position and a folded position, a front wheel assembly, a left rear wheel assembly, a right rear wheel assembly, a locking mechanism for locking the stroller frame in the unfolded position, a seat provided on the stroller frame, the stroller frame includes :

left front frame ;

right front frame , The lower part of the left front frame is rotatably arranged with the lower part of the right front frame , When the cart frame is in the unfolded position , The upper part of the left front frame is far away from the upper part of the right front frame , When the cart frame is in the folded position , The upper part of the left front frame is close to the upper part of the right front frame ;

left rear rack , The left rear frame is set in rotation with the left front frame ;

right rear rack , The right rear frame is set in rotation with the right front frame ;

rear support frame , The rear support frame is crossed by the left rear support rod and the right rear support rod, and is pivotally connected at the intersection through the third rotating shaft , The upper part of the left rear strut and the upper part of the right front frame can be rotatably arranged in two intersecting plane directions , The lower part of the left rear strut and the lower part of the left rear frame are arranged so that they can rotate in two intersecting plane directions , The upper part of the right rear strut and the upper part of the left front frame can be arranged to be rotatable in two intersecting plane directions , The lower part of the right rear strut and the lower part of the right rear frame can be arranged to rotate in two intersecting plane directions. When the cart frame is in the unfolded position, the left The upper part of the rear strut is far away from the upper part of the right rear strut, when the cart frame is in the folded position, the upper part of the left rear strut and the upper part of the right rear strut near.

In some embodiments, the upper part of the left rear strut and the upper part of the right front frame are rotatably arranged through the second rotating joint , The lower part of the left rear strut and the lower part of the left rear frame are rotatably arranged through the third rotating joint , The upper part of the right rear strut and the upper part of the left front frame are rotatably arranged through the first rotating joint , The lower part of the right rear strut and the lower part of the right rear frame are rotatably arranged through the fourth rotating joint.

In some embodiments, the lower part of the left front frame is pivotally connected to the lower part of the right front frame through a fourth rotating shaft.

In some further embodiments, the lower part of the left front frame and the lower part of the right front frame are pivotally connected with a front wheel joint through a fourth rotating shaft, and the lower part of the left front frame and the lower part of the right front frame An expansion limiting mechanism is arranged between the three front wheel joints, and the front wheel assembly is arranged on the front wheel joints.

In some embodiments, the front wheel assembly is disposed below the rotation location of the left front frame and the right front frame.

In some embodiments, the left rear frame and the left front frame are rotatably arranged through the fifth rotating joint , The right rear frame and the right front frame are rotatably arranged through the sixth rotating joint.

In some embodiments, the locking mechanism includes a rear rear support set on the rear support frame for positioning the widths of the left rear support rod and the right rear support rod in the left-right direction. Support frame positioning mechanism.

In some further embodiments, the rear support frame positioning mechanism includes a first link whose end is pivotally connected to the left rear support rod, and whose end is pivotally connected to the right rear support rod. The second connecting rod connected, the other end of the first connecting rod is set in rotation with the other end of the second connecting rod, the other end of the first connecting rod is connected to the other end of the second connecting rod There is a locking device between the other ends of the second connecting rod.

In some embodiments, the left rear wheel assembly is disposed at the lower part of the left rear strut, the right rear wheel assembly is disposed at the lower part of the right rear strut, or the left The rear wheel assembly is arranged on the lower part of the left rear frame, and the right rear wheel assembly is arranged on the lower part of the right rear frame.

In some embodiments, the stroller frame further includes a left push rod whose lower part is pivotally connected with the left front frame through the fifth rotating shaft, and whose lower part is pivotally connected with the right front frame through the sixth rotating shaft. The connected right push rod, the push handle cross brace that can be folded and folded in the left and right directions is arranged between the left push rod and the right push rod, and the locking mechanism includes A left push rod locking mechanism arranged between the left front frame, a right push rod locking mechanism arranged between the right push rod and the right front frame.

In some further embodiments, the push bar cross brace includes a left push handle pivotally connected to the left push rod at one end through the seventh rotation shaft, and a left push handle at one end connected to the right push rod through the eighth shaft. The right push handle pivotally connected with the rotating shaft, the other end of the left push handle is pivotally connected with the other end of the right push handle, and the locking mechanism includes a The push handle locking mechanism between the other end of the push handle and the other end of the right push handle.

In some further embodiments, the lower part of the left push rod can be rotated forward and connected to the left front frame , The lower part of the right push rod can be rotated forward and connected to the right front frame , Between the lower part of the left push rod and the left front frame, there is a left limiting mechanism that prohibits the backward rotation of the left push rod when the cart frame is in the unfolded position. A right limit mechanism that prevents the right push rod from rotating backward when the cart frame is in the unfolded position is arranged between the lower part and the right front frame; or the lower part of the left push rod can be rotated backward and connected on the left front shelf , The lower part of the right push rod can be rotated backwards and connected to the right front frame , Between the lower part of the left push rod and the left front frame, there is a left limit mechanism that prohibits the forward rotation of the left push rod when the cart frame is in the unfolded position, and the left push rod of the right push rod A right limiting mechanism that prohibits the forward rotation of the right push rod when the cart frame is in the unfolded position is arranged between the lower part and the right front frame.

The orientation words such as up, down, front, and back mentioned above are defined when the cart frame is in the unfolded position, and the position of the front wheel assembly is front and bottom.

The scope of the present invention 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, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the use of the above technical solutions, the present invention has the following advantages compared with the prior art: when the cart frame is converted from the unfolded position to the folded position, the rear support frame shrinks in size in the left and right width directions, allowing the left front frame to be aligned with the right front The frames are moved closer together synchronously, and when the rear support frame is folded in the left and right width direction, its size in the direction of the vertical height becomes longer, so that the lower part of the left rear frame and the lower part of the right rear frame move downward respectively , and then make the left front frame, the right front frame, and the rear support frame close to each other, the cart frame is simple in structure, and the manufacturing cost is relatively low.

Description of drawings

Attached picture 1 It is a three-dimensional view of the cart frame in the unfolded position (embodiment 1);

Attached picture 2 It is a three-dimensional view of the cart frame in the transition process between the unfolded position and the folded position (embodiment 1);

Attached picture 3 It is a perspective view of the cart frame in the folded position (embodiment 1);

Attached picture 4 It is a side view of the cart frame in the unfolded position (embodiment 1);

Attached picture 5 It is a side view of the cart frame during the conversion process between the unfolded position and the folded position (embodiment 1);

Attached picture 6 It is a side view of the cart frame in the folded position (embodiment 1);

Attached picture 7 It is a perspective view of the cart frame in the unfolded position (embodiment 2);

Attached picture 8 It is a three-dimensional view of the cart frame in the transition process between the unfolded position and the folded position (embodiment 2);

Attached picture 9 It is a perspective view of the cart frame in the folded position (embodiment 2);

Attached picture 10 It is a side view of the cart frame in the unfolded position (embodiment 2);

Attached picture 11 It is a side view of the cart frame in the transition process between the unfolded position and the folded position (embodiment 2);

Attached picture 12 It is a side view of the cart frame in the folded position (embodiment 2);

in: 1 , Cart frame; 2 , front wheel assembly; 3 , left rear wheel assembly; 4 , right rear wheel assembly; 5 , left front frame; 6 , right front frame; 7 , left rear frame; 8 , right rear frame; 9 , rear support frame; 10 , left rear strut; 11 , right rear strut; 12 , left push rod; 13 , right push rod; 14 , push handle cross brace; 15 , left push handle; 16 , right push handle; 17 , front wheel joint; 18 , Rear support frame positioning mechanism; twenty three , the third shaft; twenty four , the fourth shaft; 25 , the fifth shaft; 26 , the sixth shaft; 27 , the seventh shaft; 28 , the eighth shaft; 31 , the first rotating joint; 32 , the second rotating joint; 33 , the third rotating joint; 34 , the fourth revolving joint; 35 , the fifth rotating joint; 36 , the sixth rotating joint.

detailed description

Embodiment one, as accompanying drawing 1- Attached picture 6 As shown, a stroller for children includes a stroller frame with an unfolded position and a folded position 1 , front wheel assembly 2 , left rear wheel assembly 3 , right rear wheel assembly 4 , for the cart frame 1 Locking mechanism locked in the unfolded position, set on the cart frame 1 The seat on the seat can be a child's seat pocket, a child's sleeping basket, a seat cloth pocket, etc.

Cart frame 1 include :

left front frame 5;

right front frame 6, left front frame 5 lower part and right front frame 6 The lower part of the phase is set rotationally , when cart frame 1 in the expanded position , left front frame 5 the upper part of the

right front frame 6 upper part away from , when cart frame 1 in collapsed position , left front frame 5 upper part and right front frame 6 the upper part is close to ;

left rear rack 7, left rear rack 7 with left front frame 5 set in rotation ;

right rear rack 8, right rear rack 8 with right front frame 6 set in rotation ;

rear support frame 9, rear support frame 9 left rear strut 10 with right rear strut 11 intersect and pass the third reel at the intersection twenty three phase pivot connection , rear support frame 9 Can be rotatably installed on the left front frame 5 , right front frame 6 , left rear frame 7 with right rear rack 8 between, rear left strut 10 upper part and right front frame 6 The upper part can be rotatably arranged in two intersecting plane directions , left rear strut 10 lower part and left rear frame 7 The lower part can be rotatably arranged in two intersecting plane directions , right rear strut 11 upper part and left front frame 5 The upper part can be rotatably arranged in two intersecting plane directions , right rear strut 11 lower part and right rear frame 8 The lower part of the car can be set to rotate in two intersecting plane directions, when the cart frame 1 In deployed position, rear left strut 10 upper part and right rear strut 11 The upper phase is far away, when the cart frame 1 In folded position, rear left strut 10 upper part and right rear strut 11 close to the top. left rear rack 7 upper part and right rear frame 8 The upper part extends forward respectively to form a left seat frame and a right seat frame for installing seats.

About the rear support 9 Connection. as attached 1 , attached 2 Shown, left rear strut 10 upper part and right front frame 6 The upper part passes through the second revolving joint 32 set in rotation , left rear strut 10 lower part and left rear frame 7 The lower part passes through the third revolving joint 33 set in rotation ,

right rear strut 11 upper part and left front frame 5 The upper part passes through the first revolving joint 31 set in rotation , right rear strut 11 lower part and right rear frame 8 The lower part passes through the fourth revolving joint 34 set in rotation. first revolving joint 31 , the second revolving joint 32 , the third revolving joint 33 with the fourth revolving joint 34 There are two rotating shafts respectively, so that the two components respectively related to them can be arranged to be rotatable in two intersecting plane directions. And, the first revolving joint 31 , the second revolving joint 32 , the third revolving joint 33 with the fourth revolving joint 34 Each can be replaced by a ball joint.

About the left front frame 5 lower part and right front frame 6 The connection structure of the lower part. left front frame 5 lower part and right front frame 6 The lower part of the shaft passes through the fourth shaft twenty four Phase pivot connection. front wheel assembly 2 Set on the left front frame 5 with right front frame 6 below the rotation setting. front wheel assembly 2 Can be set on the left front frame 5 The lower part can be set on the right front frame 6 the lower part. left front frame 5 lower part and right front frame 6 The lower part of the shaft passes through the fourth shaft twenty four Pivot connection with front wheel joint 17 , left front frame 5 Lower part, right front frame 6 lower part of the front wheel joint 17 An expansion limit mechanism is arranged between the three, and the front wheel assembly 2 Set on the front wheel joint 17 superior. Or it can also be connected like this, but the rigidity is not as in this embodiment through a fourth shaft twenty four Connected strong, that is, the left front frame 5 lower part of the front wheel joint 17 One side of the frame is connected by a pivot, the right front frame 6 lower part of the front wheel joint 17 The other side is connected by another pivot. Expanding the limit mechanism is not the gist of the present invention, as long as the left front frame can be 5 Lower part, right front frame 6 lower part of the front wheel joint 17 All three structures can be used to limit the position when unfolding, such as in the front wheel joint 17 The left side part and the right side part of the left side part and the right side part are respectively provided with left stopper and right stopper, when cart frame 1 In unfolded position, front left frame 5 That is to press on the left block, the right front frame 6 That is to press on the right stopper. In this embodiment, the front wheel assembly 2 Set on the front wheel joint 17 the lower part.

left rear rack 7 with left front frame 5 through the fifth revolving joint 35 set in rotation , right rear rack 8 with right front frame 6 Via the sixth revolving joint 36 set in rotation. Similarly, the fifth revolving joint 35 with the sixth revolving joint 36 There are two rotating shafts respectively. due to left rear rack 7 with right rear rack 8 when cart frame 1 There is less distortion and deformation during the transition between the unfolded position and the folded position, and it is also possible that the left rear frame 7 with left front frame 5 are pivotally connected directly by the first shaft extending in the left-right direction and tilted , right rear rack 8 with right front frame 6 They are pivotally connected directly by the second rotating shaft extending in the left-right direction and inclined.

The locking mechanism includes a rear support frame 9 on the left rear strut 10 with right rear strut 11 Rear support frame positioning mechanism for width positioning in the left-right direction 18 . Rear support frame positioning mechanism 18 Includes one end and left rear strut 10 Pivotally connected first link, one end and right rear strut 11 The second connecting rod pivotally connected, the other end of the first connecting rod and the other end of the second connecting rod are rotatably arranged, the other end of the first connecting rod and the other end of the second connecting rod There is a locking device between them, and the first connecting rod and the second connecting rod are kept in a straight rod state through the locking device. In this embodiment, the rear support frame positioning mechanism 18 on the third axis twenty three above. Rear support frame positioning mechanism 18 It can also be used to connect the left rear strut 10 with right rear strut 11 The locking mechanism that locks at the pivot joint of the 10 right rear strut 11 Just lock it so that the two cannot rotate. as in the left rear strut 10 has a spring tongue on the right rear strut 11 There is a lock hole on the top, and it is locked when the spring tongue is inserted in the lock hole. In addition, the locking mechanism can also be set on the left front frame 5 with right front frame 6 of the rotational connection.

as attached 1- Attached picture 6 Shown, left rear wheel assembly 3 Set on left rear strut 10 Lower part of the right rear wheel assembly 4 Set on the right rear strut 11 the lower part.

To make the cart frame 1 Smaller in folded position, cart frame 1 Also includes lower part and left front frame 5 via the fifth shaft 25 Pivot left push rod 12 , lower part and right front frame 6 via the sixth shaft 26 pivotally connected right pushrod 13 , set on the left fader 12 with right putter 13 The push handle cross brace that can be folded and folded in the left and right directions 14 , left putter 12 The lower part can be rotated forward and connected to the left front frame 5 superior , right putter 13 The lower part can be rotated forward and connected to the right front frame 6 superior , left putter 12 lower part and left front frame 5 There is a trolley frame between them 1 Inhibit left push rod in deployed position 12 Left limit mechanism for backward rotation, right push rod 13 lower part and right front frame 6 There is a trolley frame between them 1 Inhibit right push rod in deployed position 13 Right limit mechanism for turning backwards. The specific structure of the left limit mechanism and the right limit mechanism is not the gist of the present invention, as long as the two parts that can be rotated can be expanded to limit, as, in the left front frame 5 The upper part is provided with a left stopper, and the trolley frame 1 In the deployed position, push lever left 12 Pressed against the left stop, it cannot be turned back any further. Cart frame 1 In the process of folding, push the left 12 with right putter 13 Flip forward towards the left front frame 5 with right front frame 6 direction closer.

push bar 14 Includes one end with left push rod 12 via the seventh shaft 27 Pivot-connected left push handle 15 , one end and right push rod 13 through the eighth shaft 28 Right push handle with pivot connection 16 , push the handle left 15 the other end and the right push handle 16 The other end of the pivot connection, push the left 15 the other end and the right push handle 16 There is a push handle locking mechanism between the other ends of the left push rod 12 with left front frame 5 There is a left push rod locking mechanism between them, and a right push rod 13 with right front frame 6 A right push rod locking mechanism is arranged between them. The specific structures of the push handle locking mechanism, the left push rod locking mechanism and the right push rod locking mechanism are not the gist of the present invention, as long as they can be used to lock the two rotating parts, such as the above-mentioned elastic tongue and Example of a keyhole.

Cart frame 1 Can be without left putter 12 , right putter 13 with push bar cross brace 14 , that is, directly from the left front frame 5 The upper part of the upper extends upwards to form a left push rod, which is formed by the right front frame 6 The upper part of the cart extends upwards to form a right push rod, but the cart frame is larger when folded.

Embodiment two, as accompanying drawing 7- Attached picture 12 As shown, the main difference between embodiment two and embodiment one is: the left push rod 12 The lower part can be rotated backwards and connected to the left front frame 5 superior , right putter 13 The lower part can be rotated backwards and connected to the right front frame 6 superior , left putter 12 lower part and left front frame 5 There is a trolley frame between them 1 Inhibit left push rod in deployed position 12 Left limit mechanism for forward rotation, right push rod 13 lower part and right front frame 6 There is a trolley frame between them 1 Inhibit right push rod in deployed position 13 Right limit mechanism for forward rotation. Cart frame 1 In the process of folding, push the left 12 with right putter 13 Flip back towards the rear support frame 9 direction closer.

left rear wheel assembly 3 Set on the left rear rack 7 Lower part of the right rear wheel assembly 4 Set on the right rear rack 8 the lower part.

Rear support frame positioning mechanism 18 on the third axis twenty three below. on left front shelf 5 Swivel up to connect the left seat frame, on the right front frame 6 Rotate up to connect the right seat frame, the seat is set on the left seat frame and the right seat frame, when in use, the left seat frame and the right seat frame rely on the cloth cover on the seat to hang on the left front frame 5 with right front frame 6 to stabilize. And because the rear support frame positioning mechanism 18 The lower position is not conducive to the user's bending operation to unlock, and the positioning mechanism of the left seat frame, the right seat frame and the rear support frame can be used. 18 Connected by a towing cable, the trolley frame 1 When it needs to be folded, the left seat frame and the right seat frame can be lifted up to pull the rear support frame positioning mechanism 18 Unlock its locking mechanism for further folding for easy folding.

As mentioned above, we have fully described according to the purpose of the present invention, but the present invention is not limited to the above-mentioned embodiments and implementation methods. Practitioners in the relevant technical fields may make various changes and implementations within the scope permitted by the technical ideas of the present invention.

Claims (10)

1. A child stroller, comprising a stroller frame (1) with an unfolded position and a folded position, a front wheel assembly (2), a left rear wheel assembly (3), a right rear wheel assembly (4), for The said stroller frame (1) is locked to the locking mechanism under the unfolded position, and the seat provided on the said stroller frame (1), and the described stroller frame (1) includes: Left front frame (5); The right front frame (6), the lower part of the left front frame (5) and the lower part of the right front frame (6) are arranged so that when the cart frame (1) is in the unfolded position, the The upper part of the left front frame (5) is far away from the upper part of the right front frame (6), and when the cart frame (1) is in the folded position, the upper part of the left front frame (5) and the The top of said right front frame (6) is close; The left rear frame (7), the left rear frame (7) is set in rotation with the left front frame (5); The right rear frame (8), the said right rear frame (8) is set in rotation with the said right front frame (6); it is characterized in that: said cart frame (1) also includes: The rear support frame (9), the rear support frame (9) is crossed by the left rear support rod (10) and the right rear support rod (11) and pivotally connected by the third rotating shaft (23) at the intersection , the upper part of the left rear support rod (10) and the upper part of the right front frame (6) can be arranged to rotate in two intersecting plane directions, the left rear support rod (10) The lower part and the lower part of the left rear frame (7) are arranged to be rotatable in two intersecting plane directions, and the upper part of the right rear support rod (11) is connected to the left front frame (5) The upper part can be arranged to rotate in two intersecting plane directions, and the lower part of the right rear strut (11) and the lower part of the right rear frame (8) can be arranged in two intersecting plane directions. Rotately arranged, when the cart frame (1) is in the unfolded position, the upper part of the left rear strut (10) is far away from the upper part of the right rear strut (11), when The cart frame (1) is in the folded position, and the upper part of the left rear strut (10) is close to the upper part of the right rear strut (11); The cart frame (1) also includes a left push rod (12) whose lower part is pivotally connected to the left front frame (5) through a fifth rotating shaft (25), and a lower part that is connected to the right front frame (6) ) the right push rod (13) that is pivotally connected by the sixth rotating shaft (26), and the foldable and retractable folding rod arranged between the left push rod (12) and the right push rod (13) Push bar cross brace (14), said locking mechanism includes a left push rod locking mechanism arranged between said left push rod (12) and said left front frame (5), and a left push rod locking mechanism arranged between said The right push rod locking mechanism between the push rod (13) and the described right front frame (6); The lower part of the left push rod (12) can be rotated forward and connected to the left front frame (5), and the lower part of the right push rod (13) can be rotated forward and connected to the right front frame ( 6) above, between the lower part of the left push rod (12) and the left front frame (5), there is a device that prohibits the left push rod (12) when the cart frame (1) is in the unfolded position. The left limit mechanism that rotates backward, and the lower part of the right push rod (13) and the right front frame (6) are provided with a device that prohibits the right push rod when the cart frame (1) is in the unfolded position A right limiting mechanism for the push rod (13) to rotate backward; or the lower part of the left push rod (12) can rotate backward and be connected to the left front frame (5), and the right push rod (13) ) can be rotated backwards and connected to the right front frame (6), and a cart frame (1) is arranged between the bottom of the left push rod (12) and the left front frame (5) ) is in the unfolded position, the left limit mechanism that prohibits the forward rotation of the left push rod (12), the bottom of the right push rod (13) and the right front frame (6). The vehicle frame (1) is in the unfolded position and prohibits the right limiting mechanism that the said right push rod (13) rotates forward. 2. A stroller for children according to claim 1, characterized in that: the upper part of the left rear support rod (10) and the upper part of the right front frame (6) pass through the second rotating joint (32) The lower part of the left rear support rod (10) and the lower part of the left rear frame (7) are arranged to rotate relative to each other through the third rotating joint (33), and the right rear support rod ( 11) and the upper part of the left front frame (5) are rotatably arranged through the first rotating joint (31), and the lower part of the right rear support rod (11) is connected to the right rear frame (8) The lower part of it is set rotatably through the fourth revolving joint (34). 3. A stroller for children according to claim 1, characterized in that: the lower part of the left front frame (5) and the lower part of the right front frame (6) are pivoted through the fourth rotating shaft (24) connect. 4. A stroller for children according to claim 3, characterized in that: the lower part of the left front frame (5) is pivotally connected with the lower part of the right front frame (6) through the fourth rotating shaft (24) There is a front wheel joint (17), and an expansion limiting mechanism is arranged between the lower part of the left front frame (5), the lower part of the right front frame (6) and the front wheel joint (17), The front wheel assembly (2) is arranged on the front wheel joint (17). 5. A stroller for children according to claim 1, characterized in that: said front wheel assembly (2) is arranged on the rotation arrangement of said left front frame (5) and said right front frame (6) below. 6. A stroller for children according to claim 1, characterized in that: the left rear frame (7) and the left front frame (5) are arranged to rotate through the fifth rotating joint (35), The right rear frame (8) and the right front frame (6) are rotatably arranged through the sixth rotary joint (36). 7. A children's stroller according to claim 1, characterized in that: said locking mechanism includes a set on said rear support frame (9) for locking said left rear support rod (10 ) and the rear support frame positioning mechanism (18) positioned with the width of the right rear strut (11) in the left-right direction. 8. A stroller for children according to claim 7, characterized in that: said rear support frame positioning mechanism (18) comprises a first pivotally connected end to said left rear support rod (10). A connecting rod, a second connecting rod pivotally connected at one end to the right rear strut (11), the other end of the first connecting rod is connected to the other end of the second connecting rod Arranged in rotation, there is a locking device between the other end of the first connecting rod and the other end of the second connecting rod. 9. A stroller for children according to claim 1, characterized in that: said left rear wheel assembly (3) is arranged at the lower part of said left rear strut (10), said right rear wheel Assembly (4) is arranged on the bottom of described right rear strut (11), or described left rear wheel assembly (3) is arranged on the bottom of described left rear frame (7), and described right rear wheel The assembly (4) is arranged on the lower part of the right rear frame (8). 10. A stroller for children according to claim 1, characterized in that: said push bar cross brace (14) includes an end connected to said left push rod (12) through a seventh rotating shaft (27) The pivotally connected left push handle (15), one end of the right push handle (16) pivotally connected with the right push rod (13) through the eighth rotating shaft (28), the left push handle (15) ) is pivotally connected to the other end of the right push handle (16), and the locking mechanism includes the other end of the left push handle (15) and the right push handle (15). Push handle locking mechanism between the other ends of the push handle (16).