CN203581043U - Stroller - Google Patents

Abstract

The utility model relates to a stroller. The stroller comprises a stroller frame, a wheel assembly, a seat supporting mechanism and a locking mechanism, wherein the stroller frame is provided with an unfolding position and a folding position, the wheel assembly is arranged below the stroller frame, the seat supporting mechanism capable of being transversely folded is arranged on the stroller frame, and the locking mechanism is used for locking the stroller frame at the unfolding position. The stroller is provided with the double position, the single position and the folding position, and when the stroller is located at the double position, the left side and the right side of the stroller can be folded, a user can use the stroller with the double position and the single position through simple operation flexibly, and when the stroller is in a completely folded state, the folded stroller is small in size and convenient to store.

Description

a stroller for children

technical field

The utility model relates to a stroller for children.

Background technique

The children's stroller in the prior art, such as the application number is: the children's stroller in 201110000595.7 includes a stroller frame, a wheel assembly arranged under the stroller frame, a seat mechanism arranged on the stroller frame, a folding lock mechanism, the cart frame includes a first side bracket, a second side bracket, a first connecting frame connected between the first side bracket and the second side bracket, and the cart frame also includes a third side bracket and a third side bracket The second connecting frame fixedly connected to the side frame, the second side frame is located between the first side frame and the second side frame, the second connecting frame is slidably connected to the first connecting frame, the first side frame, the second The link mechanism of the side support is the same as that of the third side support, and the seat mechanism includes a first seat mechanism for being arranged between the first side support and the first side support, several second side supports and a third side support arranged with J. The second seat mechanism between the side supports, the cart frame has a double cart position and a single cart position, and the cart frame can be converted between the double cart position and the single cart position. In the prior art, one side of the stroller is foldable, while the other side cannot be folded.

Contents of the invention

The technical problem to be solved by the utility model is to overcome that in the prior art, only one side of the children's stroller can be folded, and the other side cannot be folded.

The utility model provides a stroller for children.

In order to solve the above technical problems, a technical solution adopted by the utility model is: a children's stroller, including a stroller frame, a wheel assembly arranged under the stroller frame, and the stroller frame includes a Left cart frame, a right cart frame and a middle bracket connected between the left cart frame and the right cart frame, the left cart frame includes: a left Bracket, a left seat supporting mechanism installed between the left side bracket and the middle bracket; the left seat supporting mechanism includes: a first left seatpost connected with the left side bracket; a second left seat post to which the bracket is connected; a left bottom bracket comprising a left third bottom bar and a left fourth bottom bar which intersect and are pivotally connected at the intersection, the left third bottom One end of the rod is directly or indirectly rotatably connected to the front of the second left seatpost, the other end is rotatably connected to the rear of the first left seatpost, and one end of the left fourth bottom post is directly or indirectly rotatably connected It is connected to the first left seat post, and the other end is rotatably connected to the rear part of the second left seat post; the right stroller frame includes: a right side bracket, a right side bracket installed on the right side bracket and the middle The right seat support mechanism between the brackets; the right seat support mechanism includes: a first right seat post connected to the right side support; a second right seat post connected to the middle support; a right bottom bracket , the right bottom bracket includes a right third bottom bar and a right fourth bottom bar that intersect and are pivotally connected at the intersection, and one end of the right third bottom bar is directly or indirectly rotatably connected to the second right bottom bar. The front part and the other end of the seat post are rotatably connected to the rear part of the first right seat post, and one end of the fourth right bottom post is directly or indirectly rotatably connected to the front part and the other end of the first right seat post Rotationally connected to the rear part of the second right seat post; the baby stroller has a double car position and a single car position, when the baby stroller is in the double car position, the left stroller frame and The right stroller frame is in the unfolded state; when the child stroller is in the single-person state, one of the left stroller frame and the right stroller frame is in the unfolded state, and the other is folded horizontally and opposite to each other. The middle bracket is folded.

Further, the right bottom bracket also includes a right first bottom bar and a right second bottom bar, the right fourth bottom bar is indirectly connected to the front part of the first right seat post through the right first bottom bar, and the right third bottom bar The bottom bar is indirectly connected to the front part of the second right seat post through the second right bottom bar, the left bottom bracket also includes a left first bottom bar and a left second bottom bar, and the left fourth bottom bar passes through the said The left first bottom post is indirectly connected to the front portion of the first left seat post, and the left third bottom post is indirectly connected to the second left seat post through the left second bottom post.

Optionally, the right side bracket includes: a right front wheel bracket; a right push rod, the lower end of which is rotatably connected to the upper end of the right front wheel bracket; a right rear wheel bracket, the The upper end of the right rear wheel bracket is rotationally connected with the middle part of the right push rod; the longitudinal folding locking part arranged at the lower end of the right push rod and the upper end of the right front wheel bracket, the left side bracket It includes: a left front wheel bracket; a left push rod, the lower end of the left push rod is rotatably connected to the upper end of the left front wheel bracket; a left rear wheel bracket, the upper end of the left rear wheel bracket is connected to the The middle part of the left push rod is rotatably connected; the longitudinal folding locking part is arranged on the lower end of the left push rod and the upper end of the left front wheel bracket, and the middle bracket includes: a middle front bracket; a middle push rod, The lower end of the middle push rod is rotatably connected to the upper end of the middle front bracket;

The middle rear bracket, the upper end of the middle rear bracket is rotationally connected with the middle part of the middle push rod; the longitudinal folding locking part is arranged at the lower end of the middle push rod and the upper end of the middle wheel bracket.

Further, the front part of the first right seatpost is rotatably connected to the right front wheel bracket, and the rear end of the first right seatpost is rotatably connected to the right rear wheel bracket; the second The front part of the right seat post is rotatably connected with the middle front bracket, and the rear end of the second right seat post is rotatably connected with the middle rear bracket.

Further, the stroller further includes: a right rear support frame arranged between the right rear wheel support and the middle rear support, a right rear support frame arranged between the left rear wheel support and the middle rear support The left rear support frame in between, the right rear support frame includes: a right vertical bar; a right first horizontal bar, one end of the right first horizontal bar is pivotally connected to the upper end of the right vertical bar, The other end of the first right cross bar is pivotally connected to the right rear wheel bracket; the second right cross bar, one end of the second right cross bar is connected to the upper part of the right vertical bar The other end of the second right cross bar is pivotally connected with the middle rear bracket; the right slider, the right slider is slidably arranged on the right vertical bar the third right crossbar, one end of the third right crossbar is pivotally connected to the lower end of the right vertical bar, the other end of the third right crossbar is connected to the right rear The wheel brackets are pivotally connected; the fourth right crossbar, one end of the fourth right crossbar is pivotally connected with the lower end of the right vertical bar, and the other end of the fourth right crossbar It is pivotally connected with the middle and rear bracket; the first right slant bar, one end of the first right slant bar is pivotally connected with the right slider, and the first right slant bar is in addition One end is pivotally connected to the third right cross bar; the second right slant bar, one end of the second right slant bar is pivotally connected to the right slider, and the second right slant bar is pivotally connected to the right slider. The other end of the diagonal bar is pivotally connected to the fourth right cross bar, and the structure of the left rear support frame is the same as that of the right rear support frame. The left rear support frame includes: a left vertical bar; a left first horizontal bar, one end of the left first horizontal bar is pivotally connected with the upper end of the left vertical bar, and the left first horizontal bar The other end of the bar is pivotally connected to the left rear wheel bracket; the left second crossbar, one end of the left second crossbar is pivotally connected to the upper part of the left vertical bar, the The other end of the left second crossbar is pivotally connected to the middle and rear bracket; the left slider, the left slider is slidably arranged on the left vertical bar; the left third crossbar, One end of the left third crossbar is pivotally connected to the lower end of the left vertical rod, and the other end of the left third crossbar is pivotally connected to the left rear wheel bracket; The fourth left crossbar, one end of the fourth left crossbar is pivotally connected to the lower end of the left vertical bar, and the other end of the fourth left crossbar is connected to the middle and rear support are pivotally connected; the first left slanting rod, one end of the first left slanting rod is pivotally connected to the left slider, and the other end of the first left slanting rod is connected to the first left slanting rod The three horizontal bars are pivotally connected; the left second slanting bar, one end of the left second slanting bar is pivotally connected to the left slider, and the other end of the left second slanting bar is connected to the The left fourth crossbar is pivotally connected.

Further, the right rear support frame includes a locking device arranged at the lower end of the right vertical rod, and when the right cart frame is in the unfolded state, the locking device connects the right vertical rod, the The third right cross bar and the fourth right cross bar are locked, and the left rear support frame includes a locking device arranged at the lower end of the left vertical bar. When the left trolley frame is in the unfolded state, the The locking device locks the left vertical bar, the third left cross bar, and the fourth left cross bar.

Further, the stroller further includes: a laterally foldable right footrest arranged between the right front wheel bracket and the middle front bracket; The left footrest that can be folded horizontally.

Further, the wheel assembly includes a right front wheel, a left front wheel, a right rear wheel, and a left rear wheel, the right front wheel is arranged at the lower end of the right front wheel bracket, and the left front wheel set on the lower end of the left front wheel bracket, the right rear wheel is set on the lower end of the right rear wheel bracket, and the left rear wheel is set on the lower end of the left rear wheel bracket .

Further, the baby stroller also includes: a right backrest that can be folded laterally arranged between the left side frame and the middle frame; A horizontally folded left backrest, the right backrest includes a first right backrest bar, a second right backrest bar, the lower end of the first right backrest bar is pivoted to the middle of the first right seatpost connected, the lower end of the second right backrest rod is pivotally connected to the middle part of the second right seatpost, the left backrest includes a first left backrest rod and a second left backrest rod, and the first A lower end of a left back bar is pivotally connected to the middle portion of the first left seat post, and a lower end of the second left back bar is pivotally connected to the middle portion of the second left seat post.

Further, the baby stroller also includes a lock mechanism arranged on the left stroller frame or the right stroller frame, and the lock mechanism has a Hook the hook of the middle bracket when folding horizontally.

Due to the adoption of the above technical solutions, the utility model has the following advantages compared with the prior art: the left side and the right side of the children's stroller of the present invention can be folded, and the user can flexibly realize the use of single and double strollers through simple operations , when the cart is fully folded, it is small in size and easy to store.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the right side view of the utility model (the cart is located at the position of the double car);

Fig. 2 is the front view of the utility model (the cart is located at the position of the double car);

Fig. 3 is a perspective view of the utility model (the cart is located at the position of a double cart);

Fig. 4 is a top view of the utility model (the cart is located at the position of a double car);

Fig. 5 is the front view of the utility model (the cart is located at the position of the single-person cart);

Fig. 6 is a perspective view of the utility model (the cart is located at the single-person cart position);

Fig. 7 is the front view of the utility model (the cart is in the folded position);

Figure 8 is a perspective view of the utility model (the cart is in the folded position);

Fig. 9 is the right view of the utility model (the cart is converted from the folded position to the fully folded position);

Figure 10 is a perspective view of the utility model (the cart is converted from a folded position to a fully folded position);

Fig. 11 is a perspective view of the utility model (the cart is in a fully folded state).

Among them, 1. Right bracket; 2. Left bracket; 3. Middle bracket; 4. Right seat support mechanism; 5. Left seat support mechanism; 6. Right rear support; 7. Left rear support; 8. Wheels Components; 9. Right backrest; 10. Left backrest; 100. First folding lock hook; 101. First folding foot hook; 300. Longitudinal folding locking part; 11. Right push rod; 12. Right front wheel bracket; 13. Right rear wheel support; 21. Left push rod; 22. Left front wheel support; 23: Left rear wheel support; 31. Middle push rod; 32. Middle front support; 33. Middle rear support; 41. First right Seat post; 42, second right seat post; 431, right first bottom post; 432, right second bottom post; 433, right third bottom post; 434, right fourth bottom post; 51, left first seat post ;52, the second left seat post; 531, the first left bottom bar; 532, the second left bottom bar; 533, the third left bottom bar; 534, the fourth left bottom bar; 61, the first right cross bar, 62 , the second right bar; 63, the third right bar; 64, the fourth right bar; 65, the right vertical bar; 66, the right slider; 67, the first right slanting bar; 68, the second right slanting bar ;81, right front wheel; 82, left front wheel, 83, right rear wheel, 84, left rear wheel; 72, left second crossbar; 73, left third crossbar; 74, left fourth crossbar; 75 , the left vertical bar; 76, the left slider; 77, the first left slanting bar; 78, the second left slanting bar; 91, the first right back bar; 92, the second right back bar; 101, the first left back bar ; 102, the second left backrest bar.

Detailed ways

Below in conjunction with specific embodiment the utility model is described in further detail. It should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited by the scope of the following embodiments. The implementation conditions used in the examples can be further adjusted according to specific requirements, and the unspecified implementation conditions are usually the conditions in routine experiments.

A stroller for children, comprising a stroller frame and a wheel assembly (8) arranged under the stroller frame, the stroller frame includes a left stroller frame, a right stroller frame and a Connected to the middle bracket 3 between the left trolley frame and the right trolley frame, the left trolley frame includes: a left side bracket 2, a left side bracket 2 and a The left seat support mechanism 5 between the middle brackets 3; the left seat support mechanism 5 includes: a first left seatpost 51 connected with the left side bracket 2; a first left seat post 51 connected with the middle bracket 3; Two left seatposts 52; the left bottom bracket, the left bottom bracket includes a left third bottom bar 533 and a left fourth bottom bar 534 that intersect and are pivotally connected at the intersection, and the left third bottom bar 533 One end of the left fourth bottom post 534 is directly or indirectly connected to the front of the second left seat post 52, and the other end is connected to the rear of the first left seat post 51. One end of the fourth left bottom post 534 is directly or indirectly The ground is rotatably connected to the first left seatpost 51, and the other end is rotatably connected to the rear part of the second left seatpost 52; the right stroller frame includes: a right side bracket 1, a right side bracket 1 installed on the right side The right seat support mechanism 4 between the bracket 1 and the middle bracket 3; the right seat support mechanism 4 includes: a first right seatpost 41 connected with the right side bracket 1; connected second right seat post 42; a right bottom bracket comprising a right third bottom bar 433 and a right fourth bottom bar 434 which intersect and are pivotally connected at the crossing; One end of the bottom post 433 is directly or indirectly rotatably connected to the front of the second right seat post 42 , the other end is rotatably connected to the rear of the first right seat post 41 , and one end of the fourth right bottom post 434 is Directly or indirectly rotatably connected to the front of the first right seat post 41, and the other end rotatably connected to the rear of the second right seat post 42; When the baby stroller is in the position of a two-person cart, the left stroller frame and the right stroller frame are both in the expanded state; when the baby stroller is in the single-person cart state, the left pushchair One of the trolley frame and the right trolley frame is in an unfolded state, and the other is horizontally folded and folded relative to the middle support.

The right bottom bracket also includes a right first bottom bar 431 and a right second bottom bar 432, a right fourth bottom bar 434 is indirectly connected to the front part of the first right seat post 41 through the right first bottom bar 431, and the right The third bottom bar 433 is indirectly connected to the front part of the second right seat post 42 through the right second bottom bar 432, and the left bottom bracket also includes a left first bottom bar 531 and a left second bottom bar 532. The four bottom rods 534 are indirectly connected to the front part of the first left seat post 51 through the left first bottom rod 531, and the left third bottom rod 533 is indirectly connected to the second left bottom rod 532 through the left second bottom rod 532. seat post 52.

The right side bracket 1 includes: a right front wheel bracket 12; a right push rod 11, the lower end of the right push rod 11 is connected in rotation with the upper end of the right front wheel bracket 12; a right rear wheel bracket 13, The upper end of the right rear wheel support 13 is rotationally connected with the middle part of the right push rod 11, and the left side support 2 includes: a left front wheel support 22; a left push rod 21, the left push rod 21 The lower end is rotatably connected with the upper end of the left front wheel support 22; the left rear wheel support 23, the upper end of the left rear wheel support 23 is rotatably connected with the middle part of the left push rod 21, the The middle bracket 3 includes: a middle front bracket 32; a middle push rod 31, the lower end of the middle push rod 31 is rotatably connected with the upper end of the middle front bracket 32; a middle rear bracket 33, the middle rear bracket 33 The upper end of the upper end is rotationally connected with the middle part of the middle push rod 31.

The front part of the first right seatpost 41 is rotatably connected to the right front wheel bracket 12, and the rear end of the first right seatpost 41 is rotatably connected to the right rear wheel bracket 13; The front parts of the two right seat posts 42 are rotatably connected with the middle front bracket 32 , and the rear ends of the second right seat post 42 are rotatably connected with the middle rear bracket 33 .

The children's stroller also includes: the right rear support frame 6 arranged between the right rear wheel support 13 and the middle rear support 33, the left rear wheel support 23 and the middle rear support 33 between the left rear support frame 7, the right rear support frame 6 includes: a right vertical bar 65; a right first cross bar 61, one end of the right first cross bar 61 and the right vertical bar 65 The upper end of the upper end is pivotally connected, and the other end of the first right crossbar 61 is pivotally connected with the right rear wheel bracket 13; the second right crossbar 62, the second right crossbar One end of 62 is pivotally connected to the upper part of the right vertical bar 65, and the other end of the second right cross bar 62 is pivotally connected to the middle and rear bracket 33; the right slider 66, the Said right slider 66 is slidably arranged on said right vertical bar 65; the right third cross bar 63, one end of said right third cross bar 63 is pivoted with the lower end of said right vertical bar 65 Shaft connection, the other end of the third right crossbar 63 is pivotally connected with the right rear wheel bracket 13; the fourth right crossbar 64, one end of the fourth right crossbar 64 is connected with the The lower end of the right vertical bar 65 is pivotally connected, and the other end of the fourth right cross bar 64 is pivotally connected with the middle and rear bracket 33; the first right oblique bar 67, the One end of the first right slanting bar 67 is pivotally connected to the right slider 66, and the other end of the first right slanting bar 67 is pivotally connected to the third right cross bar 63; Two slanting bars 68, one end of the second right slanting bar 68 is pivotally connected to the right slider 66, and the other end of the second right slanting bar 68 is connected to the fourth right cross bar 64 Connected with each other with a pivot, the left rear support frame 7 includes: a left vertical bar 75; a left first cross bar 71, one end of the left first cross bar 71 is pivoted with the upper end of the left vertical bar 75 Shaft connection, the other end of the left first cross bar 71 is pivotally connected with the left rear wheel bracket; the left second cross bar 72, one end of the left second cross bar 72 is connected with the left rear wheel bracket The upper part of the left vertical bar 75 is pivotally connected, and the other end of the left second cross bar 72 is pivotally connected with the middle and rear bracket 33; the left slider 76, the left slider 76 Slidingly arranged on the left vertical bar 75; the third left horizontal bar 73, one end of the third left horizontal bar 73 is pivotally connected with the lower end of the left vertical bar 75, and the The other end of the third left cross bar 73 is pivotally connected with the left rear wheel bracket; the fourth left cross bar 74, one end of the fourth left cross bar 74 is connected with the left vertical bar 75 The lower end is pivotally connected, and the other end of the fourth left crossbar 74 is pivotally connected with the middle and rear support 33; the left first diagonal rod 77, the left first diagonal rod 77 One end is pivotally connected with the left slider 76, and the other end of the left first slanting bar 77 is pivotally connected with the left third cross bar 73; the left second slanting bar 78, the One end of the left second slanting rod 78 is pivotally connected to the left slider 76 , and the other end of the left second slanting rod 78 is pivotally connected to the left fourth cross bar 74 .

The right rear support frame 6 includes a locking device arranged at the lower end of the right vertical bar 65. When the right stroller frame is in an unfolded state, the locking device locks the right vertical bar 65, the The third right cross bar 63 and the fourth right cross bar 64 are locked, and the left rear support frame 7 includes a locking device arranged at the lower end of the left vertical bar 75. state, the locking device locks the left vertical bar 75, the left third cross bar 73, and the left fourth cross bar 74.

The stroller also includes: a horizontally foldable right foot rest arranged between the right front wheel bracket 12 and the middle front bracket 32 ; The horizontally foldable left footrest between.

The wheel assembly 8 includes a right front wheel 81, a left front wheel 82, a right rear wheel 83, and a left rear wheel 84. The right front wheel 81 is arranged at the lower end of the right front wheel bracket 12, and the The left front wheel 82 is arranged on the lower end of the left front wheel bracket 22, the right rear wheel 83 is arranged on the lower end of the right rear wheel bracket 13, and the left rear wheel 84 is arranged on the The lower end of the left rear wheel support 23 described above.

The children's stroller also includes: a horizontally foldable right backrest 9 arranged between the left side bracket 2 and the middle bracket 3 ; The horizontally foldable left backrest 10 of

The right backrest includes a first right backrest bar 91 and a second right backrest bar 92, the lower end of the first right backrest bar 91 is pivotally connected to the middle part of the first right seatpost 41, so The lower end of the second right backrest rod 92 is pivotally connected to the middle part of the second right seatpost 42, and the left backrest includes a first left backrest rod and a second left backrest rod. The lower end of the left back bar is pivotally connected to the middle portion of the first left seat post, and the lower end of the second left back bar is pivotally connected to the middle portion of the second left seat post. The backrest bar can be flexibly disassembled when not needed.

The baby stroller also includes a lock mechanism 100 arranged on the left stroller frame or the right stroller frame, and the lock mechanism 100 has a locking mechanism for locking the left stroller frame or the right stroller frame laterally. Hook the locking hook 101 of the middle bracket 3 when folding.

As shown in Figure 1-4, the baby stroller is in the position of a double car. At this time, one side of the baby stroller can carry children, and one side can be used as a shopping cart. When the user only needs to use one side of the baby stroller , the left cart frame or the right cart frame can be folded horizontally. There is a locking mechanism at the junction of the third crossbar 63, 73, the fourth crossbar 64, 74 and the vertical bar 65, 75 of the rear support frames 6, 7 of the stroller, and the user can kick the locking mechanism upwards with his feet. Pushing the left side frame 2 or the right side frame 1 towards the middle will drive the seat support mechanisms 4, 5 and the rear supports 6, 7 to fold laterally. Users can conveniently switch between double cars and single cars.

As shown in Figure 5-6, the baby stroller is located at the position of a single car, and the baby stroller is folded horizontally to the position shown in the figure, and the user can use the first folding lock hook 100 and the matching first folding foot hook 101 to buckle , the left side bracket 2 or the right side bracket 1 and the middle bracket 3 are fixed together. The first folding lock hook 100 and the first folding foot hook 101 are installed on the cart frame.

As shown in Figure 7-8, for a child stroller, the left and right stroller frames are folded horizontally,

As shown in Figure 9-10, in the process of folding the cart frame horizontally and then vertically, there is a locking mechanism 300 between the push rods 11, 21 and the front wheel brackets 12, 22, after unlocking the locking mechanism , the push rods 11, 21 can rotate forward relative to the front wheel brackets 12, 22, and drive other mechanisms of the stroller to fold longitudinally at the same time, and the stroller is folded longitudinally.

As shown in Figure 11, the stroller is in the fully folded position, and the user can fix the front wheel brackets 12, 22, 32 and the rear wheel brackets 13, 23, 33 of the stroller with the second folding lock hook and the second folding foot hook. , the stroller is secured in a fully folded position. The stroller in the fully folded position is compact and easy to store.

As with the above-mentioned stroller, the user can also first fold it longitudinally and then fold it horizontally, so that the stroller is in a fully folded position. Users can freely choose the folding method according to their needs.

The utility model has been described in detail above, and the description of the embodiment is only used to help understand the method of the utility model and its core idea, and its purpose is to allow those familiar with the technology in this field to understand the content of the utility model and implement it accordingly , and cannot limit the protection scope of the present utility model with this. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (10)

1. a children trolley, comprise go-cart vehicle frame, be arranged at the vehicle wheel component (8) of described go-cart vehicle frame below, described go-cart vehicle frame comprises that a left go-cart vehicle frame, a right go-cart vehicle frame and are connected in the medium-height trestle (3) between described left go-cart vehicle frame and described right go-cart vehicle frame, is characterized in that

Described left go-cart vehicle frame comprises: a left side brackets (2), is arranged on the left seat supporting mechanism (5) between described left side brackets (2) and described medium-height trestle (3); Described left seat supporting mechanism (5) comprising:

First left the bar (51) being connected with described left side brackets (2);

Second left the bar (52) being connected with described medium-height trestle (3);

Left bottom bracing frame, described left bottom bracing frame comprises and intersecting and at a left side for infall pivotal joint the 3rd bottom bar (533) and left the 4th bottom bar (534), front portion, the other end that one end of described left the 3rd bottom bar (533) is rotationally connected with second left bar (52) is directly or indirectly rotationally connected with the rear portion of first left bar (51), and an end of described left the 4th bottom bar (534) is rotationally connected with first left bar (51), the other end and is rotationally connected with the rear portion of second left bar (52) directly or indirectly;

Described right go-cart vehicle frame comprises: a right side support (1), is arranged on the right seat supporting mechanism (4) between described right side support (1) and described medium-height trestle (3); Described right seat supporting mechanism (4) comprising:

First right the bar (41) being connected with described right side support (1);

Second right the bar (42) being connected with described medium-height trestle (3);

Right bottom bracing frame, described right bottom bracing frame comprises and intersecting and at the right side of infall pivotal joint the 3rd bottom bar (433) and right the 4th bottom bar (434), front portion, the other end that one end of described right the 3rd bottom bar (433) is rotationally connected with second right bar (42) is directly or indirectly rotationally connected with the rear portion of first right bar (41), and front portion, the other end that an end of described right the 4th bottom bar (434) is rotationally connected with first right bar (41) is directly or indirectly rotationally connected with the rear portion of second right bar (42);

Described children trolley has double carriage position, single truck position, and when described children trolley is positioned under double carriage position, described left go-cart vehicle frame and right go-cart vehicle frame are all in deployed condition; When described children trolley is positioned under single car state, described left go-cart vehicle frame and right go-cart vehicle frame one of them in deployed condition, another laterally folded and relative medium-height trestle draws in.

2. a kind of children trolley according to claim 1, it is characterized in that: right bottom bracing frame also comprises right the first bottom bar (431) and right the second bottom bar (432), right the 4th bottom bar (434) is connected in the front portion of first right bar (41) indirectly by described right the first bottom bar (431), right the 3rd bottom bar (433) is connected in the front portion of second right bar (42) indirectly by described right the second bottom bar (432), left bottom bracing frame also comprises left the first bottom bar (531) and left the second bottom bar (532), left the 4th bottom bar (534) is connected in the front portion of first left bar (51) indirectly by a described left side the first bottom bar (531), left the 3rd bottom bar (533) is connected in second left bar (52) indirectly by described left the second bottom bar (532).

3. a kind of children trolley according to claim 1, is characterized in that,

Described right side support (1) comprising:

Off front wheel support (12);

Right push rod (11), the bottom of described right push rod (11) is connected rotatedly with the upper end of described off front wheel support (12);

Off hind wheel support (13), the upper end of described off hind wheel support (13) is connected rotatedly with the middle part of described right push rod (11);

Be arranged at the longitudinal folding locking part (300) of the upper end of described right push rod (11) bottom and described off front wheel support (12),

Described left side brackets (2) comprising:

The near front wheel support (22);

Left push rod (21), the bottom of described left push rod (21) is connected rotatedly with the upper end of described the near front wheel support (22);

Left rear wheel support (23), the upper end of described left rear wheel support (23) is connected rotatedly with the middle part of described left push rod (21);

Be arranged at the longitudinal folding locking part (300) of the upper end of described left push rod (21) bottom and described the near front wheel support (22),

Described medium-height trestle (3) comprising:

Middle front frame (32);

Middle push rod (31), the bottom of described middle push rod (31) is connected rotatedly with the upper end of described middle front frame (32);

Middle after poppet (33), the upper end of described middle after poppet (33) is connected rotatedly with the middle part of described middle push rod (31);

Be arranged at the longitudinal folding locking part (300) of the upper end of described middle push rod (31) bottom and described middle wheel support (32).

4. a kind of children trolley according to claim 3, is characterized in that,

The front portion of described first right bar (41) rotates and is connected with described off front wheel support (12), and the rearward end of described first right bar (41) rotates and is connected with described off hind wheel support (13);

The front portion of described second right bar (42) rotates and is connected with described middle front frame (32), and the rearward end of described second right bar (42) rotates and is connected with described middle after poppet (33).

5. a kind of children trolley according to claim 3, it is characterized in that, described children trolley also comprises: be arranged at right back bracing frame (6) between described off hind wheel support (13) and described middle after poppet (33), the left back bracing frame (7) between left rear wheel support (23) and described middle after poppet (33) described in being arranged at

Described right back bracing frame (6) comprising:

Right montant (65);

Right the first cross bar (61), an end of the described right side the first cross bar (61) is connected with the upper end phase pivot of described right montant (65), and the other end of the described right side the first cross bar (61) is connected with described off hind wheel support (13) phase pivot;

Right the second cross bar (62), an end of the described right side the second cross bar (62) is connected with the top phase pivot of described right montant (65), and the other end of the described right side the second cross bar (62) is connected with described middle after poppet (33) phase pivot;

Right slide block (66), what described right slide block (66) slided is arranged on described right montant (65);

Right the 3rd cross bar (63), one end of the described right side the 3rd cross bar (63) is connected with the bottom phase pivot of described right montant (65), and the other end of the described right side the 3rd cross bar (63) is connected with described off hind wheel support (13) phase pivot;

Right the 4th cross bar (64), one end of the described right side the 4th cross bar (64) is connected with the bottom phase pivot of described right montant (65), and the other end of the described right side the 4th cross bar (64) is connected with described middle after poppet (33) phase pivot;

Right the first brace (67), one end of the described right side the first brace (67) is connected with described right slide block (66) phase pivot, and the described right side the first brace (67) other end is connected with the described right side the 3rd cross bar (63) phase pivot;

Right the second brace (68), one end of the described right side the second brace (68) is connected with described right slide block (66) phase pivot, the described right side the second brace (68) other end is connected with described right the 4th cross bar (64) phase pivot

Described left back bracing frame (7) comprising:

Left montant (75);

Left the first cross bar (71), an end of a described left side the first cross bar (71) is connected with the upper end phase pivot of described left montant (75), and the other end of a described left side the first cross bar (71) is connected with described left rear wheel support phase pivot;

Left the second cross bar (72), an end of a described left side the second cross bar (72) is connected with the top phase pivot of described left montant (75), and the other end of a described left side the second cross bar (72) is connected with described middle after poppet (33) phase pivot;

Left slider (76), what described left slider (76) slided is arranged on described left montant (75);

Left the 3rd cross bar (73), one end of a described left side the 3rd cross bar (73) is connected with the bottom phase pivot of described left montant (75), and the other end of a described left side the 3rd cross bar (73) is connected with described left rear wheel support phase pivot;

Left the 4th cross bar (74), one end of a described left side the 4th cross bar (74) is connected with the bottom phase pivot of described left montant (75), and the other end of a described left side the 4th cross bar (74) is connected with described middle after poppet (33) phase pivot;

Left the first brace (77), one end of a described left side the first brace (77) is connected with described left slider (76) phase pivot, and a described left side the first brace (77) other end is connected with a described left side the 3rd cross bar (73) phase pivot;

Left the second brace (78), one end of a described left side the second brace (78) is connected with described left slider (76) phase pivot, and a described left side the second brace (78) other end is connected with described left the 4th cross bar (74) phase pivot.

6. a kind of children trolley according to claim 5, it is characterized in that, described right back bracing frame (6) comprises, be arranged at the blocking device of described right montant (65) bottom, when described right go-cart vehicle frame is during in deployed condition, described blocking device is by described right montant (65), described right the 3rd cross bar (63), described right the 4th cross bar (64) locking

Described left back bracing frame (7) comprises, be arranged at the blocking device of described left montant (75) bottom, when described left go-cart vehicle frame is during in deployed condition, described blocking device is by described left montant (75), described left the 3rd cross bar (73), described left the 4th cross bar (74) locking.

7. a kind of children trolley according to claim 3, it is characterized in that, described children trolley also comprises: be arranged between described off front wheel support (12) and middle front frame (32) can be laterally folded right threading portion, be arranged between described the near front wheel support (22) and described middle front frame (32) can be laterally folded left threading portion.

8. a kind of children trolley according to claim 4, it is characterized in that, described wheel assembly (8) comprises off front wheel (81), the near front wheel (82), off hind wheel (83), left rear wheel (84), described off front wheel (81) is arranged at the bottom of described off front wheel support (12), described the near front wheel (82) is arranged at the bottom of described the near front wheel support (22), described off hind wheel (83) is arranged at the bottom of described off hind wheel support (13), and described left rear wheel (84) is arranged at the bottom of described left rear wheel support (23).

9. a kind of children trolley according to claim 4, it is characterized in that, described children trolley also comprises: be arranged between described left side brackets (2) and described medium-height trestle (3) can be laterally folded right back-rest (9), be arranged between described right side support (1) and described medium-height trestle (3) can be laterally folded left back-rest (10)

Described right back-rest comprises one first right back support bar (91), one second right back-rest bar (92), the bottom of described the first right back support bar (91) is connected with described first right bar (41) middle part phase pivot, the bottom of described the second right back support bar (92) is connected with described second right bar (42) middle part phase pivot

Described left back-rest comprises one first left back support bar, one second left back-rest bar, the bottom of described the first left back support bar is connected with described first left bar middle part phase pivot, and the bottom of described the second left back support bar is connected with described second left bar middle part phase pivot.

10. a kind of children trolley according to claim 1, it is characterized in that, described children trolley also comprises the latch mechanism (100) being arranged on described left go-cart vehicle frame or right go-cart vehicle frame, has for catching on the latch hook (101) of medium-height trestle (3) when laterally folded at left go-cart vehicle frame or right go-cart vehicle frame on described latch mechanism (100).

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