CN113264099B - stroller - Google Patents

Abstract

The invention discloses a children's stroller, comprising a frame with unfolded and folded states, and a seat frame arranged on the frame. When the frame is in the unfolded state, the seat frame includes a seat and a backrest, and the lower part of the backrest is rotatably arranged There is a backrest mounting seat, and the backrest mounting seat can be arranged on the seat in a relative movement along the length extension direction of the seat. During the transition of the frame from the unfolded state to the folded state, the backrest mounting seat moves forward along the seat, and the backrest and the seat are folded together. and folded together with the frame. Compared with the prior art, the present invention has at least the following advantages: 1. When the vehicle frame is folded, the seat frame can be folded in conjunction, and the operation is simple; The folding size of the car is small, which is easy to carry and store; 3. The backrest can be set in one piece, the structure is simple and the support strength is guaranteed.

Description

stroller

technical field

The invention relates to the field of children's products, in particular to a children's stroller.

Background technique

In the existing foldable baby strollers, the folding method of the seat is usually a difficult point. When some strollers are folded, the seat needs to be removed, which is complicated to operate; in order to reduce the volume of the folded frame of some strollers, The backrest of the seat will be designed to be segmented up and down, and the body of the backrest and the headrest will be connected by a rotating shaft. The backrest designed in this way, on the one hand, makes the structure of the seat complicated, increases the production cost and is inconvenient to use, on the other hand The support strength of the backrest is reduced, and the defects are obvious.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a child stroller with a simple folding method of the seat and a small folding volume.

To achieve the above object, the technical scheme adopted in the present invention is:

A children's stroller includes a frame with an unfolded state and a folded state, a seat frame arranged on the frame, the frame is in the unfolded state, the seat frame includes a seat and a backrest, and the backrest has a seat and a backrest. The lower part is rotatably provided with a backrest mounting seat, and the backrest mounting seat is arranged on the seat so as to be relatively movable along the extending direction of the length of the seat. During the transition of the frame from the unfolded state to the folded state, the A backrest mount moves forward along the seat, the backrest and the seat being folded with each other and with the frame.

Preferably, the seat has a sitting surface, and the backrest has a backrest surface and a back surface respectively disposed on two sides with different thickness directions of the seat. When the frame is in a folded state, the back surface and the sitting-stand Faces close together.

Preferably, the backrest mounting seat is relatively slidable on the seat in the front-rear direction, and the frame has a process for switching the frame between the unfolded state and the folded state A drive mechanism for driving the backrest mount to slide relative to the seat.

Further preferably, the vehicle frame has at least a first rod frame and a second rod frame, the rear of the seat is rotatably connected to the first rod frame around a first rotation center line, and the seat can be The front and rear directions are relatively slidable and can be relatively rotatably connected to the second rod frame around the second rotation center line. The second rotation center line and the first rotation center line are parallel to each other and located at the first rotation center. In front of the line, during the transition of the frame from the unfolded state to the folded state, the first rotation center line and the second rotation center line are far away from each other in the front-rear direction, and the driving mechanism includes a driving rod, so One end of the drive rod is rotatably connected to the backrest mounting seat, and the other end of the drive rod is rotatably connected to the frame, and the frame is in the process of transitioning from the unfolded state to the folded state moving away from the first rotational centerline.

Further preferably, the other end of the driving rod is rotatably connected to the second rod frame around a third rotation center line, and the third rotation center line and the second rotation center line are parallel to each other. or collinear extension.

Further preferably, the second rod frame is provided with a support rod extending in the left-right direction, the seat includes a seat plate, a guide rod fixed on the bottom of the seat plate, the guide rod is connected to the seat plate A guide groove extending in the front-rear direction is formed therebetween, the support rod can be relatively rotatable and can be slidably fitted in the guide groove in the front-rear direction, and the support rod is supported under the seat plate.

Preferably, the frame includes a front bracket, a rear bracket, and an armrest frame each extending in an up-down direction, and two of the upper part of the front bracket, the upper part of the rear bracket, and the lower part of the armrest frame The third party is rotatably connected with one of the aforementioned two, or the upper part of the front bracket, the upper part of the rear bracket and the lower part of the armrest frame are rotatably connected to each other, so One of the front bracket, the rear bracket and the armrest frame constitutes the second pole frame.

Further preferably, the vehicle frame further includes a push rod frame and a rear support frame respectively extending in the up-down direction, and a link assembly arranged between the front frame and the rear frame, and the upper part of the armrest frame rotates connected to the push rod frame, the rear support frame is rotatably connected to the rear support frame, the lower part of the push rod frame is rotatably connected to the upper part of the rear support frame, and the connecting rod assembly includes a front connecting rod and rear connecting rod, the front part of the front link is rotatably connected to the front bracket, the rear part of the rear link is rotatably connected to the rear bracket, and the rear part of the front link is connected to the The front part of the rear link is rotatably connected, and the lower part of the rear support frame is connected to the rear link in a relatively rotatable and slidable manner, and the rear support frame constitutes the first rod frame.

Preferably, the vehicle frame includes a front bracket, a rear bracket, an armrest bracket, a push rod bracket, and a rear bracket each extending in an up-down direction, wherein the upper part of the front bracket, the upper part of the rear bracket and the armrest Two of the lower part of the frame are rotationally connected and the third is rotationally connected to one of the aforementioned two, or the upper part of the front frame, the upper part of the rear frame and the lower part of the armrest frame are The three are rotatably connected to each other, the upper part of the armrest frame is rotatably connected to the push rod frame, the rear bracket is rotatably connected to the rear bracket, and the lower part of the push rod frame is rotatably connected to the The upper part of the rear bracket is rotatably connected, and one of the upper part of the front bracket, the upper part of the rear bracket and the lower part of the armrest frame is provided with a support rod, and the support rod can rotate relatively The seat can be relatively slidably connected to the seat in the front-rear direction, the rear part of the seat is rotatably connected to the rear support frame, and the backrest mounting seat can be relatively slidably arranged on the seat in the front-rear direction, The frame also includes a drive rod, one end of the drive rod is rotatably connected to the backrest mounting seat, and the other end of the drive rod is rotatably connected to the upper part of the front bracket and the rear bracket on one of the upper part and the lower part of the armrest frame.

Further preferably, the lower part of the armrest frame is rotatably connected with the upper part of the rear bracket, and the support rod is provided on the upper part of the rear bracket or the lower part of the armrest frame, when the vehicle frame is in a folded state , the seat and the backrest are close to each other, and the rear bracket and the rear support frame are closed to each other.

Due to the application of the above technical solutions, the stroller provided by the present invention is provided with a backrest mounting seat that can move relatively along the length extension direction of the seat. When the frame is folded, the backrest and the seat can be linked together to fold together. The present invention is different from the existing one. Compared with the technology, it has at least the following advantages: 1. When the frame is folded, the seat frame can be folded together, which is easy to operate; 2. In the folded state, the backrest and the seat are attached to each other and folded together with the frame, and the folded volume of the whole vehicle is small. Easy to carry and store; 3. The backrest can be set in one piece, the structure is simple and the support strength is guaranteed.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, which are very important in the art. For those of ordinary skill, other drawings can also be obtained from these drawings without any creative effort.

Accompanying drawing 1 is a three-dimensional schematic diagram of a specific embodiment of the stroller of the present invention under the unfolded state;

Accompanying drawing 2 is the side view schematic diagram of the stroller in FIG. 1;

Accompanying drawing 3 is the perspective view of another angle of the stroller in FIG. 1;

Accompanying drawing 4 is the three-dimensional schematic diagram during the folding process of the stroller in this embodiment;

5 is a schematic side view of the stroller in FIG. 4;

6 is a perspective view of the stroller in the folded state of the present embodiment;

7 is a schematic side view of the stroller in FIG. 6;

8 is a schematic exploded perspective view of the structure of the seat frame and part of the vehicle frame in this embodiment;

FIG. 9 is a schematic perspective view of the seat frame and part of the vehicle frame in the process of folding in this embodiment;

10 is a schematic top view of FIG. 9;

FIG. 11 is a schematic perspective view of the seat frame and part of the vehicle frame in the process of further folding in this embodiment;

Fig. 12 is a perspective view of the seat frame and part of the vehicle frame in a folded state in this embodiment;

Fig. 13 is a schematic exploded perspective view of the structure of the pedal frame and part of the vehicle frame in this embodiment;

14 is a perspective view of the pedal frame and part of the frame in the unfolded state of the present embodiment;

Accompanying drawing 15 is the enlarged schematic diagram of place A in FIG. 14;

FIG. 16 is a schematic perspective view of the step frame and part of the frame during the folding process of this embodiment;

17 is a perspective view of the pedal frame and part of the frame in the folded state of the present embodiment;

Among them: 100, seat frame; 110, seat; 110a, sitting surface; 120, backrest; 120a, backrest; 120b, back side; 130, leg rest; 200, footrest; 210, receiving slot; 220, pedal Connection part; 310, front bracket; 311, front strut; 320, rear bracket; 321, rear strut; 3211, rear strut joint; 410, armrest frame; 411, support rod; 4111, drive rod joint; 412, Grab bar; 420, push rod frame; 430, rear support frame; 431, rear upper stay bar; 432, rear cross bar; 433, rear lower stay bar; 600, drive bar; 700, connecting rod assembly; 710, front connection rod; 711, the main body rod; 712, the driving rod; 720, the rear link; 730, the slider;

11, seat plate; 12, guide rod; 2, backrest mounting seat; 21, upper mounting seat; 211, pin shaft; 22, lower mounting seat; 23, chute; 3, front wheel assembly; 31, front wheel joint; 32. Front wheel body; 4. Rear wheel assembly; 41, Rear wheel joint; 42, Rear wheel body; ; 63, connecting piece; 64, limit piece;

X, the first rotation center line; Y, the second rotation center line; Z, the third rotation center line; P, the fourth rotation center line; Q, the fifth rotation center line; R, the sixth rotation center line; S, Front strut axis.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", The orientation or positional relationship indicated by "left-right direction", "altitude direction", "front-rear direction", etc. is based on Fig. 1. When the child normally rides on the stroller, the orientation or positional relationship observed by the child is only For the convenience of describing the present invention and simplifying the description, it is not indicated or implied that the indicated device or element must have a particular orientation, only have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

It should be noted that, unless otherwise specified, when a feature is called "fixed" or "connected" to another feature, it can be directly fixed or connected to another feature, or it can be indirectly fixed or connected to another feature. on a feature. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. In addition, the descriptions of upper, lower, left, right, etc. used in the present invention are only relative to the mutual positional relationship of each component of the present invention in the accompanying drawings.

Referring to FIGS. 1 to 3 , a child stroller includes a frame having an unfolded state and a folded state, and a wheel assembly disposed at the bottom of the frame. In the unfolded state, the vehicle frame includes a front bracket 310 , a rear bracket 320 , an armrest bracket 410 , a push rod bracket 420 and a rear support bracket 430 , each extending in the up-down direction.

Wherein, two of the upper part of the front bracket 310 , the upper part of the rear bracket 320 and the lower part of the armrest frame 410 are rotatably connected, and the third part is rotatably connected to one of the aforementioned two, or the front bracket 310 is rotatably connected. The upper part, the upper part of the rear bracket 320 and the lower part of the armrest frame 410 are rotatably connected to each other.

In the present embodiment, the front support 310 has two front support rods 311 which are respectively disposed on the left and right sides and both extend in the up-down direction, and the rear support 320 has two rear support rods 321 which are respectively disposed on the left and right sides and both extend in the vertical direction. , the upper end of each rear strut 321 is fixed with a rear strut joint 3211, the front strut 311 on each side is rotatably connected to the rear strut joint 3211 around a rotation line c, and the rotation line c extends along the left and right directions of the frame.

Referring to FIGS. 5 and 8 , the armrest frame 410 has two armrest bars 412 disposed on the left and right sides and extending in the up-down direction, and a support bar 411 connected between the lower ends of the armrest bars 412 on both sides. The upper part of the handrail 412 is rotatably connected to the push rod frame 420 around the rotation line a, and the support rod 411 is rotatably connected to the two rear support rod joints 3211 around the second rotation center line Y (that is, the axis line of the support rod 411 itself). between.

The rear support frame 430 has two rear upper support rods 431 and two rear lower support rods 433 respectively disposed on the left and right sides and extending in the vertical direction, and a rear cross rod 432 extending in the left and right direction. The left and right ends of the rear cross bar 432 extend upward, and the rear lower struts 433 extend downward from the rear cross bar 432 , and in the left and right directions of the rear cross bar 432 , the two rear lower braces 433 are located at the two rear upper braces On the inner side of the rod 431, the rods of the rear bracket 430 are fixed to each other. The upper end of the rear upper strut 431 is rotatably connected to the lower end of the push rod frame 420 around the rotation line b, the rotation line b and the rotation line a are parallel to each other, and the rotation line b is located below the rotation line a; On the upper side, the two rear upper stay bars 431 are located on the inner side of the two handrail bars 412 . Referring to FIG. 3 , the rear lower struts 433 on each side are rotatably connected to the rear struts 321 around the rotation line j. In the left-right direction of the frame, the two rear lower struts 433 are located between the two rear struts 321 . inside.

Referring to FIGS. 1 to 3 and 13 , the frame further includes a link assembly 700 disposed between the front bracket 310 and the rear bracket 320. The link assembly 700 has two groups located on the left and right sides, and each group is connected to Each of the rod assemblies 700 includes a front link 710 and a rear link 720 extending in the front-rear direction, wherein the front link 710 has a main body rod 711 , and a drive that bends downward from the front end of the main body rod 711 and extends backwards Rod 712 . Specifically, the front part of the front link 710 is rotatably connected to the front strut 311 around the fifth rotation center line Q, and the rear end of the front link 710 is rotatably connected to the front end of the rear link 720 around the rotation line d. The rear part of the link 720 is rotatably connected to the rear support rod 321 around the rotation line f, and the rotation line f is located below the rotation line j in the longitudinal direction of the rear support rod 321 . In addition, the lower part of the rear support frame 430 is connected to the rear link 720 in a relatively rotatable and slidable manner. Specifically, the rear support rod 321 is further provided with a sliding member 730 that can slide along the length direction of the rear support rod 321 , the lower end of the rear lower strut 433 is connected to the sliding member 730 in rotation around the rotation line e.

In this embodiment, the wheel assemblies include two sets of front wheel assemblies 3 respectively disposed at the bottoms of the two sets of front struts 311 , and two sets of rear wheel assemblies 4 disposed at the bottoms of the two sets of rear struts 321 respectively. The front wheel assembly 3 includes a front wheel joint 31 and a front wheel body 32, and the front wheel joint 31 is arranged at the bottom of the front support rod 311 in a relative rotation around the axis S of the front support rod 311; similarly, the rear wheel assembly 4 includes a rear wheel joint 41 and a rear wheel body 42 , and the rear wheel joint 41 is arranged at the bottom of the rear support rod 321 to rotate relative to the axis of the rear support rod 321 . Referring to Figures 6 and 7, the frame is provided with a wheel linkage structure (not shown in the figure), when the frame is folded as a whole, the front wheel assembly 3 and the rear wheel assembly 4 can turn inwards around their respective rotation center lines It is turned over and folded flat with the frame as a whole, so that the frame is compact in size after being folded. The specificity of the wheel linkage structure can be based on the prior art (for example, the patent application with the publication number of CN109178077A), which is not limited in the present invention.

In order to further optimize the folding structure of the frame, in this embodiment, the stroller further includes a seat frame 100 disposed on the frame, and the seat frame 100 is located between the rear upper struts 431 on both sides in the left-right direction. When the vehicle frame is in an unfolded state, the seat frame 100 includes a seat 110, a backrest 120 and a leg rest 130, wherein the seat 110 has an upward sitting surface 110a, and the backrest 120 has a backrest surface 120a respectively disposed on two sides with different thickness directions. and the back side 120b; the leg rest 130 is rotatably connected to the front end of the seat 110 around the rotation line i; on seat 110.

When the frame is in the unfolded state, the child can normally ride on the seat frame 100, the backrest 120 supports the back, and the leg rests 130 support the legs; when the frame is folded, the backrest 120 is fitted and folded on the upper part of the seat 110, and the legrests 130 are fitted It is tucked into the lower part of the seat 110 .

The frame has at least a first rod frame and a second rod frame, the rear of the seat 110 is rotatably connected to the first rod frame around the first rotation center line X, and the seat 110 can both relatively slide in the front-rear direction and rotate around the second rod frame. The rotation center line Y is relatively rotatably connected to the second pole frame. The second rotation center line Y and the first rotation center line X are parallel to each other and are located in front of the first rotation center line X. When the frame is folded, the first rotation The center line X and the second rotation center line Y are separated from each other.

In this embodiment, the rear bracket 430 constitutes the first pole frame; one of the front bracket 310 , the rear bracket 320 , and the armrest frame 410 constitutes the second pole frame. In this embodiment, the armrest frame 410 constitutes the second pole frame. .

In other embodiments, the support rod 411 can also be disposed on the upper part of the front bracket 310 or the upper part of the rear bracket 320 , and either the support rod 411 can constitute the second rod frame.

Referring to FIGS. 8 to 12 , specifically, the backrest mounting seat 2 has two groups that are respectively arranged on the left and right sides of the backrest 120 , and each group of backrest mounting seats 2 includes an upper mounting seat 21 , a lower mounting seat 22 and a pin that are fixedly arranged with each other. The shaft 211, wherein the pin 211 is located between the upper mounting seat 21 and the lower mounting seat 22, the lower end of the backrest 120 and the upper mounting seat 21 are rotatably connected around a rotation line h, and the rotation line h extends along the left-right direction of the seat frame 100 .

The seat 110 includes a seat plate 11 and a guide rod 12 fixed at the bottom of the seat plate 11. A guide groove extending in the front-rear direction is formed between the guide rod 12 and the seat plate 11. In this embodiment, the guide rod 12 is spaced in the left-right direction. Among the two provided, the support rod 411 is supported below the seat plate 11 , the support rod 411 can be relatively rotated and can be inserted into the guide groove in a sliding fit in the front-rear direction, and the guide rod 12 provides sliding guidance for the support rod 411 .

It is worth noting that, in this embodiment, the armrest bar 412 and the support bar 411 of the armrest frame 410 are integrally arranged, so that the support bar 411 can be relatively rotated and can be inserted into the guide groove in a sliding fit in the front-rear direction. In this case, the rigidity of the armrest frame 410 is better. However, in other embodiments, the support rod 411 can also be rotatably connected between the lower ends of the handrail rods 412 on both sides around the second rotation center line Y. In this case, the support rod 411 is only inserted in a sliding fit. In the guide groove, the support rod 411 can also be designed as a special-shaped rod with a cross section of any shape such as a square or a triangle.

The seat plate 11 is provided with two sliding grooves 23 extending in the front and rear directions. The two sliding grooves 23 are parallel to each other and are respectively located on the left and right sides. On the lower side of the slot 23 , the pins 211 are inserted into the corresponding chute 23 , so that the backrest mounting seat 2 can slide back and forth along the chute 23 and drive the backrest 120 to slide back and forth along the seat 110 .

In this embodiment, the vehicle frame further has a driving mechanism for driving the backrest mounting seat 2 to slide relative to the seat 110 during the switching process of the vehicle frame between the unfolded state and the folded state.

Specifically, the driving mechanism includes a driving rod 600, one end of the driving rod 600 is rotatably connected to the backrest mounting seat 2, and the other end of the driving rod 600 is rotatably connected to the vehicle frame and is folded from the unfolded state to the vehicle frame. During the state transition process, it moves away from the first rotation center line X. In fact, the other end of the driving rod 600 is rotatably connected to the upper part of the front bracket 310 , the upper part of the rear bracket 320 and the lower part of the armrest frame 410 . Furthermore, the other end of the driving rod 600 is rotatably connected to the supporting rod 411 .

In this embodiment, the driving rod 600 has two rods that are matched with the two backrest mounting bases 2 , and two driving rod joints 4111 extending downward are fixed on the support rod 411 . The rear end of each driving rod 600 is rotatably connected to the lower mounting base 22 around the rotation line g, and the front end of the driving rod 600 is rotatably connected to the driving rod joint 4111 around the third rotation center line Z. The third rotation center line Z and the second rotation center line Y are parallel to each other, and the third rotation center line Z is located below the second rotation center line Y. In other embodiments, the third rotation center line Z and the second rotation center line Y can also extend collinearly.

Referring to FIGS. 13 to 17 , on the other hand, the stroller further includes a footrest 200 disposed on the front bracket 310 for children to place their feet, and the footrest 200 can extend along the length of the front bracket 310 The directions are relatively slidably arranged on the front bracket 310 . When the frame is in the unfolded state, the step frame 200 is in the first position on the front bracket 310; when the frame is in the folded state, the step frame 200 is in the second position on the front bracket 310, and the first position is on the front bracket 310 Below the second position, the frame is further provided with a linkage mechanism for driving the foot frame 200 to slide relative to the front bracket 310 during the transition of the frame between the unfolded state and the folded state.

Specifically, the linkage mechanism includes a linkage frame, the linkage frame is rotatably connected to the foot frame 200 around the fourth rotation center line P, and the linkage frame is slidably connected to the front bracket 310 ; The front end portion is rotatably connected to the linkage frame around the sixth rotation centerline R, and the fifth rotation centerline Q is located at the junction of the main body rod portion 711 and the drive rod portion 712 of the front link 710 . The above-mentioned fourth rotation center line P, fifth rotation center line Q and sixth rotation center line R are parallel to each other, and all extend along the left and right directions of the frame, wherein the fourth rotation center line P is located at the fifth rotation center line Q. below.

Further, the front support rod 311 has a connecting convex column 51 that protrudes inward, and the connecting convex column 51 is rotatably connected to the front link 710 around the fifth rotation center line Q. Each side of the pedal connecting portion 220 is provided with a first guide groove 52 extending in the up-down direction, and the connecting boss 51 is slidably fitted through the first guide groove 52 .

The linkage frame includes a linkage rod 61 extending in the left-right direction. The linkage rod 61 is relatively rotatably connected to the foot frame 200 around the fourth rotation center line P. In fact, the axis line of the linkage rod 61 constitutes the fourth rotation center line P. , the linkage rod 61 is rotatably connected to the foot frame 200 around its own axis. The front support rod 311 is provided with a second guide groove 62 extending in the up-down direction, and the end of the linkage rod 61 is inserted into the second guide groove 62 in a sliding fit. The two guide grooves 62 are located below the connecting protrusions 51 .

In addition, the linkage frame further includes a connecting member 63 arranged on the linkage rod 61 and extending backward from the linkage rod 61 . The connecting member 63 specifically has two respectively located at the left and right ends of the linkage rod 61 , and a driving rod portion 712 on each side. It is rotatably connected with the connecting piece 63 about the sixth rotation center line R. As shown in FIG.

In this embodiment, the bottom of the pedal frame 200 is provided with a receiving groove 210 , and the driving rod portion 712 , the connecting member 63 and the linkage rod 61 are all received in the receiving groove 210 , wherein the driving rod portion 712 and the connecting member 63 are located in the pedal connection. In the accommodating groove 210 at the bottom of the portion 220 , the bottom of the accommodating groove 210 is further fixed with a limiting member 64 , and the limiting member 64 limits the linkage rod 61 in the accommodating groove 210 .

In addition, the stroller further includes a locking device for locking the frame in the unfolded state, which may specifically adopt the structure in the prior art, which is not limited in the present invention.

The working process of the present embodiment is described in detail below:

Referring to FIGS. 1 to 3 , when the frame is in the unfolded state, the backrest mounting seat 2 is located at the rear end of the chute 23 , the support rod 411 is located at the rear end of the guide groove, and the backrest 120 is upward from the rear of the seat 110 . Extending backward obliquely, the backrest surface 120 a is disposed forward, the leg rest 130 extends downward from the front of the seat 110 , and the footrest 200 is in the first position on the front bracket 310 . At this time, the position of the footrest 200 is relatively low, and when the child sits on the seat 110 , both feet can be comfortably placed on the footrest 200 .

4 to 5 , when the frame needs to be folded, the locking device is first unlocked so that the rods of the frame can rotate or slide with each other, and then the push rod frame 420 is pressed down, so that the armrest frame 410 and the The rear brackets 430 are rotated rearward about their respective rotation center lines. On the one hand, the rear part of the seat 110 rotates around the first rotation center line X, and the front part of the seat 110 rotates around the second rotation center line Y, while the first rotation center line X and the second rotation center line Y are far away from each other in the front-rear direction , the support rod 411 slides forward along the guide groove, so that the drive rod 600 rotatably connected with the support rod 411 can pull the backrest mounting seat 2 rotatably connected to the other end of the drive rod 600 to slide forward along the chute 23, and then Pull the backrest 120 to slide forward along the seat 110 , while the backrest 120 rotates backward around the rotation line h to horizontal, the back side 120b of the backrest 120 faces downwards and is opposite to the seat vertical surface 110a of the seat 110 .

On the other hand, the rear bracket 430 rotates backward and is retracted with the rear bracket 320 , the sliding member 730 slides forward along the rear link 720 , the front link 710 and the rear link 720 are relatively rotated and retracted around the rotation line d, and pulled The front bracket 310 and the rear bracket 320 are rotated and retracted around the rotation line c. During this process, the front link 710 is rotated around the fifth rotation center line Q, the main body rod 711 is rotated forward and is retracted with the front support rod 311, and the driving rod 712 Tilt backward, pull the connecting piece 63 to move upward, so that the linkage rod 61 slides upward along the second guide groove 62, that is, the linkage frame moves upward along the front bracket 310, so that the foot frame 200 moves upward relative to the front bracket 310 as a whole, The first guide groove 52 moves upward with the pedal connecting portion 220 , and the connecting protrusion 51 slides downward relative to the first guide groove 52 .

In short, when the entire vehicle frame is converted from the unfolded state to the folded state, the driving mechanism can link the seat frame 100 to fold, and the link mechanism can link the foot frame 200 to slide upward.

Referring to FIGS. 6 to 7 , when the frame is in the folded state, the front bracket 310 and the rear bracket 320 are relatively folded, and the front link 710 and the rear link 720 are folded between the front bracket 310 and the rear bracket 320 ; the seat 110 The back side 120b and the sitting surface 110a are closed relative to each other, and the leg rests 130 are rotated around the rotation line i and closed at the bottom of the seat 110; two sets of front wheel joints 31 are turned opposite to each other and are folded between the two front struts 311 in the left-right direction, the two groups of rear wheel joints 41 are turned oppositely and are folded between the two rear struts 321 in the left-right direction, and the pedal frame 200 is in the second position, The front wheel body 32 is located below the step frame 200 . At this time, the pedal frame 200 is relatively elevated, so that the turning of the front wheel assembly 3 is not affected, and the frame structure is more reasonable.

To sum up, compared with the prior art, the stroller of this embodiment has at least the following advantages:

1. In the folded state of the frame, the structure is compact, the occupied volume is small, and it is easy to carry and transport;

2. When the frame is folded as a whole, the folding of the seat frame 100 and the sliding of the foot frame 200 can be linked, without adding extra steps, and the operation is very simple;

3. The backrest 120 is integrally set, the structure is simple, and the supporting strength is good;

4. Under the premise of not increasing the height of the frame, when the frame is unfolded, the pedal frame 200 can be used normally, and when the frame is folded, the pedal frame 200 will not interfere with the turning of the front wheel assembly 3, and the adjustment is flexible.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with the art to understand the content of the present invention and implement it, and cannot limit the scope of protection of the present invention with this, all according to the spirit of the present invention Substantially equivalent changes or modifications should be included within the protection scope of the present invention.

Claims (9)

1. The utility model provides a children's shallow, is in including frame, the setting that has expansion state and fold condition seat frame on the frame, its characterized in that: the frame is in under the expansion state, the seat frame includes seat and back, the lower part of back is provided with the back mount pad with rotating, the back mount pad can be followed the length extending direction relative motion ground of seat sets up on the seat, the back mount pad can be followed fore-and-aft direction relative slip ground and set up on the seat, have on the frame and be used for the frame is in the expansion state with the in-process of switching between the fold condition is ordered about the back mount pad is relative the gliding actuating mechanism of seat, the frame is by the in-process of expansion state to fold condition conversion, actuating mechanism can link the seat frame is folding, the back mount pad is followed the seat moves forward, the back with the seat draw in each other and with the frame draws in together.

2. The stroller of claim 1, wherein: the seat is provided with a sitting surface, the backrest is provided with a backrest surface and a back side surface which are respectively arranged on two sides with different thickness directions, and when the frame is in a folded state, the back side surface and the sitting surface are folded relatively.

3. The stroller of claim 1, wherein: the frame is at least provided with a first bar frame and a second bar frame, the rear part of the seat is connected on the first bar frame in a rotating way around a first rotating center line, the seat can slide relatively along the front-back direction and can be connected on the second bar frame in a rotating way around a second rotating center line, the second rotating center line and the first rotating center line are parallel to each other and are positioned in front of the first rotating center line, and the first rotating center line and the second rotating center line are far away from each other along the front-back direction in the process of converting from an unfolding state to a folding state,

the driving mechanism comprises a driving rod, one end of the driving rod is rotationally connected to the backrest mounting seat, the other end of the driving rod is rotationally connected to the frame and far away from the first rotation center line in the process of converting the unfolding state to the folding state of the frame.

4. The stroller of claim 3, wherein: the other end of the driving rod is rotatably connected to the second rod frame around a third rotation center line, and the third rotation center line and the second rotation center line are parallel or extend in a collinear manner.

5. The stroller of claim 3, wherein: be provided with the bracing piece that extends along left right direction on the second bar frame, the seat include the bedplate, set firmly in the guide bar of bedplate bottom, the guide bar with form the guide way that extends along the fore-and-aft direction between the bedplate, the bracing piece can enough rotate relatively and can insert along fore-and-aft direction sliding fit ground and establish in the guide way, just the bracing piece supports the below of bedplate.

6. Child stroller according to claim 3 or 4 or 5, characterized in that: the frame comprises a front support, a rear support and an armrest frame which respectively extend along the up-down direction, wherein two of the upper part of the front support, the upper part of the rear support and the lower part of the armrest frame are rotationally connected, and the third one is rotationally connected with one of the two, or the upper part of the front support, the upper part of the rear support and the lower part of the armrest frame are rotationally connected with each other, and one of the front support, the rear support and the armrest frame forms the second rod frame.

7. The stroller of claim 6, wherein: the frame still includes respectively along push rod frame and the back strut that extends from top to bottom, and sets up the fore-stock with link assembly between the after-poppet, the upper portion of handrail frame is connected with rotating on the push rod frame, the back strut with the after-poppet is connected with rotating, the lower part of push rod frame with the upper portion of after-strut is connected with rotating, link assembly includes preceding connecting rod and back connecting rod, the front portion of preceding connecting rod is connected with rotating the fore-stock, the rear portion of back connecting rod is connected with rotating the after-poppet, the rear portion of preceding connecting rod with the front portion of back connecting rod is connected with rotating, the lower part of back strut can rotate relatively and connect with relative sliding on the back connecting rod, the back strut constitute first pole frame.

8. The stroller of claim 1, wherein: the frame comprises a front support, a rear support, an armrest frame, a push rod frame and a rear support frame which respectively extend along the up-down direction, wherein two of the upper part of the front support, the upper part of the rear support and the lower part of the armrest frame are rotationally connected, and the third one is rotationally connected with one of the two, or the upper part of the front support, the upper part of the rear support and the lower part of the armrest frame are rotationally connected together,

the upper part of the armrest frame is rotationally connected to the push rod frame, the rear support frame is rotationally connected with the rear support frame, the lower part of the push rod frame is rotationally connected with the upper part of the rear support frame, one of the upper part of the front support frame, the upper part of the rear support frame and the lower part of the armrest frame is provided with a support rod, the support rod can rotate relatively and can slide relatively along the front and rear directions to be connected with the seat, the rear part of the seat is rotationally connected to the rear support frame,

the backrest installation seat can be arranged on the seat in a relative sliding mode along the front-back direction, the frame further comprises a driving rod, one end portion of the driving rod is connected to the backrest installation seat in a rotating mode, and the other end portion of the driving rod is connected to the supporting rod in a rotating mode.

9. The stroller of claim 8, wherein: the lower part of the armrest frame is rotationally connected with the upper part of the rear support, the support rod is arranged on the upper part of the rear support or the lower part of the armrest frame, and when the frame is in a folded state, the seat and the backrest are mutually drawn together and the rear support frame are mutually drawn together.

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