CN215663603U - Children's barrow - Google Patents

Abstract

The utility model discloses a children cart, which comprises a frame in an unfolding state and a folding state, wherein the frame at least comprises a front support and a foot rest arranged on the front support, the foot rest can be arranged on the front support in a relatively sliding manner along the length extension direction of the front support, and the foot rest is positioned at a first position on the front support when the frame is in the unfolding state; when the frame is in a folded state, the foot rest is in a second position on the front support, the first position is positioned below the second position on the front support, and the frame is further provided with a linkage mechanism for driving the foot rest to slide relative to the front support in the process of converting the frame between the unfolded state and the folded state. This children's shallow has guaranteed the smooth folding of frame under the prerequisite that does not increase the frame height, and frame stability is good, and folding back frame is small, and the conversion process of above-mentioned foot rest need not the exclusive operation, just can link foot rest change position at the whole expansion of frame or folding in-process, and is very convenient.

Description

Children's barrow

Technical Field

The utility model relates to the field of children products, in particular to a stroller.

Background

Some foldable stroller, such as the stroller disclosed in CN109178077A, have a wheel assembly capable of rotating around a vertical center of rotation to further reduce the volume of the folded frame, so that the front and rear wheels can be folded flat with the frame in the folded state.

The stroller thus constructed suffers from problems in design: the distance between the pedal frame and the seat is relatively fixed due to the requirement of the height of the child, and if the pedal frame is arranged at a position close to the bottom of the front support, the pedal frame may hinder the rotation of the front wheel assembly when the frame is folded; if the distance between the foot rest and the seat is ensured, and the foot rest is completely higher than the front wheel assembly, the whole frame is designed to be very high, so that the production cost is increased, the center of gravity of the frame is higher, the stability is poor, and the comfort of parents in pushing is poor.

Disclosure of Invention

The utility model aims to provide a child stroller, wherein a foot rest can slide up and down relative to a front support, and the stroller frame can be conveniently folded.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a children's barrow comprises a frame with an unfolding state and a folding state, wherein the frame at least comprises a front support and a foot rest arranged on the front support, the foot rest can be arranged on the front support in a relatively sliding manner along the length extending direction of the front support, and the frame is in the unfolding state and is in a first position on the front support; the frame is in under fold condition, the step frame is in the second position on the fore-stock, the first position is in be located on the fore-stock the below of second position, still be equipped with on the frame be used for the frame orders about in-process that changes between expansion state and fold condition the step frame is relative the gliding link gear of fore-stock.

Preferably, the linkage mechanism includes a linkage frame, the linkage frame is rotatably connected with the foot rest around a first rotation center line, the linkage frame is connected to the front bracket in a relatively sliding manner, the frame further includes a front connecting rod, the front connecting rod is rotatably connected with the front bracket around a second rotation center line, an end of the front connecting rod is rotatably connected with the linkage frame around a third rotation center line, the first rotation center line, the second rotation center line and the third rotation center line are parallel to each other, and the linkage frame moves upward along the front bracket in a process that the front connecting rod is rotatably folded relative to the front bracket.

Preferably, the front bracket is provided with a connecting convex column, the connecting convex column is rotatably connected with the front connecting rod around the second rotation center line, the foot rest is provided with a first guide groove extending along the vertical direction, and the connecting convex column is inserted into the first guide groove in a sliding fit manner.

Further preferably, the linkage frame includes a linkage rod extending in the left-right direction, the linkage rod is connected to the foot rest in a relatively rotating manner around a first rotation center line, a second guide groove extending in the up-down direction is formed in the front bracket, and the linkage rod is inserted into the second guide groove in a sliding fit manner, wherein the first rotation center line is located above the second rotation center line.

Still further preferably, the axis of the linkage rod forms the first rotation center line, and the linkage rod is rotatably connected to the foot rest around the axis of the linkage rod.

Still further preferably, the linkage frame is still including locating on the gangbar and certainly the connecting piece that the gangbar extends backward, preceding connecting rod has main part pole portion, and certainly the drive rod portion that the front end of main part pole portion is buckled downwards and is extended backward, second axis of rotation is located main part pole portion with drive rod portion department of meeting, drive rod portion with the connecting piece winds third axis of rotation is connected with rotating.

Still more preferably, the foot rest has a receiving groove at a bottom thereof, and the driving lever and the connecting member are received in the receiving groove.

Preferably, the frame further comprises a rear support and a rear connecting rod, the upper portion of the rear support is connected with the upper portion of the front support in a relatively rotating manner, the rear portion of the rear connecting rod is connected to the rear support in a rotating manner, the front portion of the rear connecting rod is connected with the rear portion of the front connecting rod in a rotating manner, when the frame is converted from the unfolding state to the folding state, the front support and the rear support are folded in a relatively rotating manner, and the front connecting rod and the rear connecting rod are folded in a relatively rotating manner between the front support and the rear support.

Preferably, the frame further includes a handle frame, a rear support frame and a push rod frame, wherein two of the upper portion of the front support, the upper portion of the rear support and the lower portion of the handle frame are rotatably connected and a third one of the upper portion of the front support, the upper portion of the rear support and the lower portion of the handle frame are rotatably connected to each other, or the upper portion of the front support, the upper portion of the rear support and the lower portion of the handle frame are rotatably connected to each other, the upper portion of the handle frame is rotatably connected to the push rod frame, the rear support frame is rotatably connected to the rear support frame, the lower portion of the push rod frame is rotatably connected to the upper portion of the rear support frame, and the lower portion of the rear support frame can both relatively rotate and relatively slidably connect to the rear link.

Preferably, the fore-stock has the branch and locates the left and right sides and all follow two preceding branch that the upper and lower direction extends, children's shallow is still including dividing and locating two sets of front wheel subassembly of preceding branch bottom, the front wheel subassembly includes front wheel joint and front wheel body, the front wheel joint winds the axial lead of front branch is located with rotating relatively the bottom of front branch, works as when the frame is in fold condition, two sets of front wheel joint turns over in opposite directions and draws in two along the left and right direction between the front branch, the front wheel position in the below of foot rest.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: according to the child stroller provided by the utility model, the pedal frame can slide up and down along the front support, when the stroller frame is unfolded for use, the pedal frame is positioned at the first position below the stroller frame, and a child can normally place two feet on the pedal frame; when the bicycle frame is folded, the linkage mechanism can link the pedal frame to slide upwards to the second position, so that the pedal frame cannot interfere with the folding of the front wheel assembly or other components. This children's shallow has guaranteed the smooth folding of frame under the prerequisite that does not increase the frame height, and frame stability is good, and folding back frame is small, and the conversion process of above-mentioned foot rest need not the exclusive operation, just can link foot rest change position at the whole expansion of frame or folding in-process, and is very convenient.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of a stroller in an expanded state according to an embodiment of the present invention;

FIG. 2 is a side schematic view of the stroller of FIG. 1;

FIG. 3 is a schematic perspective view of the stroller of FIG. 1 at another angle;

fig. 4 is a schematic perspective view of the stroller in the folding process in this embodiment;

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

FIG. 6 is a perspective view of the stroller in this embodiment in a folded state;

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

FIG. 8 is an exploded perspective view of the seat frame and a portion of the frame in this embodiment;

FIG. 9 is a schematic perspective view of the seat frame and a portion of the frame during folding in the present embodiment;

FIG. 10 is a schematic top view of FIG. 9;

FIG. 11 is a perspective view of the seat frame and a portion of the frame of the present embodiment during further folding;

FIG. 12 is a perspective view of the seat frame and a portion of the frame in this embodiment in a folded state;

FIG. 13 is an exploded perspective view of the footrest and a portion of the frame in this embodiment;

FIG. 14 is a perspective view of the footrest and a portion of the frame in this embodiment in an expanded state;

FIG. 15 is an enlarged view taken at A in FIG. 14;

FIG. 16 is a perspective view of the foldable step frame and a part of the bicycle frame;

FIG. 17 is a perspective view of the foldable footrest and partial frame of the present embodiment;

wherein: wherein: 100. a seat frame; 110. a seat; 110a, a sitting surface; 120. a backrest; 120a, a backrest surface; 120b, a back side; 130. A leg rest; 200. a foot rest; 210. an accommodating groove; 220. a pedal connecting portion; 310. a front bracket; 311. a front support rod; 320. a rear bracket; 321. a rear bracket joint; 410. a handrail frame; 411. a front cross bar; 4111. a drive rod joint; 420. a push rod frame; 430. a rear support frame; 431. an upper rear stay bar; 432. a support bar; 433. a rear lower stay bar; 600. a drive rod; 700. a connecting rod assembly; 710. a front link; 711. a main body rod portion; 712. a driving lever portion; 720. a rear connecting rod; 730. a slider;

11. a seat plate; 12. a guide bar; 2. a backrest mounting seat; 21. an upper mounting seat; 211. a pin shaft; 22. a lower mounting seat; 23. a chute; 3. a front wheel assembly; 31. a front wheel joint; 32. a front wheel body; 4. a rear wheel assembly; 51. connecting the convex columns; 52. a first guide groove; 61. a linkage rod; 62. a second guide groove; 63. a connecting member; 64. a limiting member;

p, a first rotation center line; q, a second rotation center line; r, a third rotation center line; s, a front strut axis; x, a fourth rotation center line; y, a fifth rotation center line; z and a sixth rotation center line.

Detailed Description

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 utility model may be more readily 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", "left-right direction", "height direction", "front-back direction", etc. indicate the orientation or positional relationship observed by the child when the child is normally seated on the stroller based on fig. 1, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, only have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.

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

Among them, two of the upper portion of the front bracket 310, the upper portion of the rear bracket 320, and the lower portion of the armrest frame 410 are rotatably connected, and the third one is rotatably connected to one of the above two, or the upper portion of the front bracket 310, the upper portion of the rear bracket 320, and the lower portion of the armrest frame 410 are rotatably connected to each other.

In this embodiment, the front bracket 310 has two front struts 311 respectively disposed on the left and right sides and extending in the up-down direction, the rear bracket 320 has two rear struts 321 respectively disposed on the left and right sides and extending in the up-down direction, a rear strut connector 3211 is fixedly disposed at the upper end of each rear strut 321, the front strut 311 on each side is rotatably connected to the rear strut connector 3211 around a rotation line c, and the rotation line c extends in the left-right direction of the vehicle frame.

Referring to fig. 5 and 8, the handle frame 410 includes two handle bars 412 disposed on the left and right sides and extending in the vertical direction, and a support bar 411 connected between the lower ends of the handle bars 412 on the left and right sides. The upper portion of the rest bar 412 is rotatably connected to the push rod frame 420 about a rotation line a, and the support rod 411 is rotatably connected between the two rear rod joints 3211 about a fifth rotation center line Y (i.e., the axis line of the support rod 411 itself).

The rear support frame 430 has two rear upper stays 431 and two rear lower stays 433 which are respectively disposed on the left and right sides and extend in the up-down direction, and a rear cross bar 432 which extends in the left-right direction, the rear upper stays 431 extend upward from both left and right end portions of the rear cross bar 432, the rear lower stays 433 extend downward from the rear cross bar 432, and in the left-right direction of the rear cross bar 432, the two rear lower stays 433 are located inside the two rear upper stays 431, and the members of the rear support frame 430 are fixed to each other. The upper end part of the rear upper stay 431 is rotatably connected with the lower end part of the push rod frame 420 around a rotation line b, the rotation line b is parallel to the rotation line a, and the rotation line b is positioned below the rotation line a; two rear upper stays 431 are located inside the two grab bars 412 in the right-left direction of the frame. Referring to fig. 3, the rear lower stays 433 on each side are pivotally connected to the rear stays 321 about a pivot line j, and the two rear lower stays 433 are located inside the two rear stays 321 in the right-left direction of the vehicle frame.

Referring to fig. 1 to 3 and 13, the vehicle frame further includes a link assembly 700 disposed between the front bracket 310 and the rear bracket 320, the link assembly 700 has two sets disposed at left and right sides, each set of link assembly 700 includes a front link 710 and a rear link 720 extending in a front-rear direction, respectively, wherein the front link 710 has a main body rod portion 711, and a driving rod portion 712 extending from a front end of the main body rod portion 711 to be bent downward and rearward. Specifically, the front portion of the front link 710 is rotatably connected to the front bar 311 about a second rotation center line Q, the rear end portion of the front link 710 is rotatably connected to the front end portion of the rear link 720 about a rotation line d, and the rear portion of the rear link 720 is rotatably connected to the rear bar 321 about a rotation line f, which is located below the rotation line j in the length direction of the rear bar 321. In addition, the lower portion of the rear support frame 430 is connected to the rear link 720 to be relatively rotatable and relatively slidable, and specifically, the rear support rod 321 is provided with a slider 730 slidable in the longitudinal direction of the rear support rod 321, and the lower end portion of the rear lower support rod 433 is rotatably connected to the slider 730 around a rotation line e.

In this embodiment, the wheel assembly includes two front wheel assemblies 3 respectively disposed at the bottoms of the two front struts 311, and two rear wheel assemblies 4 respectively disposed at the bottoms of the two rear struts 321. The front wheel assembly 3 comprises 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 manner of 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 provided at the bottom of the rear support rod 321 so as to rotate relatively around the axis of the rear support rod 321. Referring to fig. 6 and 7, the frame is provided with a wheel linkage structure (not shown), when the frame is folded, the front wheel assembly 3 and the rear wheel assembly 4 can turn inwards around the respective rotation center lines and are folded together with the frame in a flat manner, so that the folded frame has a very small volume. The wheel linkage structure may be implemented by the prior art (for example, patent application with application publication No. CN 109178077A), and the present invention is not limited thereto.

Referring to fig. 13 to 17, the stroller further includes a foot rest 200 provided on the front frame 310 for placing a child's feet thereon, wherein the foot rest 200 is slidably provided on the front frame 310 along a longitudinal extension direction of the front frame 310. When the frame is in the unfolded state, the foot rest 200 is in the first position on the front bracket 310; when the frame is in the folded state, the foot rest 200 is at the second position on the front bracket 310, the first position is below the second position on the front bracket 310, and the frame is further provided with a linkage mechanism for driving the foot rest 200 to slide relative to the front bracket 310 in the process of converting the frame between the unfolded state and the folded state.

Specifically, the linkage mechanism includes a linkage frame rotatably connected to the foot rest 200 around a first rotation center line P, the linkage frame being relatively slidably connected to the front bracket 310; the front end of the driving rod portion 712 of the front link 710 is rotatably connected to the yoke about a third rotation center line R, and the second rotation center line Q is located at the junction between the main body rod portion 711 of the front link 710 and the driving rod portion 712. The first rotation center line P, the second rotation center line Q and the third rotation center line R are parallel to each other and extend along the left and right direction of the frame, wherein the first rotation center line P is positioned below the second rotation center line Q.

Furthermore, the front rod 311 is provided with a connecting convex pillar 51 protruding inwards, the connecting convex pillar 51 is rotatably connected with the front rod 710 around a second rotation center line Q, the foot rest 200 is provided with pedal connecting parts 220 respectively arranged at the left and right ends of the foot rest and extending upwards, each pedal connecting part 220 is provided with a first guide groove 52 extending along the vertical direction, and the connecting convex pillar 51 is inserted into the first guide groove 52 in a sliding fit manner.

The linkage frame comprises a linkage rod 61 extending along the left and right direction, the linkage rod 61 is connected to the foot rest 200 in a relative rotation manner around a first rotation center line P, actually, the axis of the linkage rod 61 forms the first rotation center line P, and the linkage rod 61 is connected to the foot rest 200 in a rotation manner around the axis of the linkage rod 61. The front support rod 311 is provided with a second guide groove 62 extending along the vertical direction, the end of the linkage rod 61 is inserted into the second guide groove 62 in a sliding fit manner, wherein the second guide groove 62 is located below the connecting convex column 51 in the length direction of the front support rod 311.

In addition, the linkage frame further includes a connecting member 63 disposed on the linkage rod 61 and extending backward from the linkage rod 61, the connecting member 63 specifically has two connecting members respectively disposed at the left and right ends of the linkage rod 61, and the driving rod portion 712 of each side is rotatably connected to the connecting member 63 around the third rotation center line R.

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

On the other hand, in order to further optimize the folding structure of the frame, in the present embodiment, the stroller further includes a seat frame 100 provided on the frame, and the seat frame 100 is located between the rear upper stays 431 on both sides in the left-right direction. When the frame is in the unfolded state, the seat frame 100 comprises a seat 110, a backrest 120 and a leg rest 130, wherein the seat 110 has an upward seat surface 110a, and the backrest 120 has a backrest surface 120a and a backrest side surface 120b which are respectively arranged at two sides different in the thickness direction; the leg rest 130 is rotatably coupled to a front end portion of the seat 110 about a rotation line i; a backrest mount 2 is rotatably provided at a lower portion of the backrest 120, and the backrest mount 2 is relatively movably provided on the seat 110 in a longitudinal extension direction of the seat 110.

When the frame is in the unfolded state, a child can normally sit on the seat frame 100, the backrest 120 supports the back, and the leg supports 130 support the legs; when the frame is folded, the backrest 120 is closed on the upper part of the seat 110, and the leg rest 130 is closed on the lower part of the seat 110.

The frame is provided with at least a first rod frame and a second rod frame, the rear part of the seat 110 is connected to the first rod frame in a way of rotating around a fourth rotation center line X, the seat 110 can slide relatively along the front-back direction and can be connected to the second rod frame in a way of rotating relatively around a fifth rotation center line Y, the fifth rotation center line Y and the fourth rotation center line X are parallel to each other and are positioned in front of the fourth rotation center line X, and when the frame is folded, the fourth rotation center line X and the fifth rotation center line Y are far away from each other.

In this embodiment, the rear support frame 430 constitutes a first bar frame; one of the front support 310, the rear support 320, and the handle frame 410 constitutes a second bar, and in this embodiment, the handle frame 410 specifically constitutes the second bar.

In other embodiments, the supporting rod 411 may be disposed on the upper portion of the front bracket 310 or the upper portion of the rear bracket 320, and one of the supporting rods 411 may constitute a second bracket.

Referring to fig. 8 to 12, specifically, the backrest mounting seats 2 have two sets respectively disposed at the left and right sides of the backrest 120, each set of backrest mounting seats 2 includes an upper mounting seat 21, a lower mounting seat 22 and a pin 211 fixedly disposed with each other, 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 is rotatably connected with the upper mounting seat 21 around a rotation line h, and the rotation line h extends along the left and right directions of the seat frame 100.

Seat 110 includes bedplate 11, sets firmly guide bar 12 in bedplate 11 bottom, forms the guide way that extends along the fore-and-aft direction between guide bar 12 and the bedplate 11, and in this embodiment, guide bar 12 has two along left and right direction interval setting, and bracing piece 411 supports in the below of bedplate 11, and bracing piece 411 can enough rotate relatively and insert in the guide way along fore-and-aft direction sliding fit ground, and guide bar 12 provides the sliding guide for bracing piece 411.

It should be noted that, in the present embodiment, the grab rail 412 and the support rod 411 of the grab rail frame 410 are integrally disposed, so that the support rod 411 can be inserted into the guide slot in a sliding fit manner along the front-back direction while relatively rotating, and the grab rail frame 410 has better rigidity. However, in other embodiments, the supporting rod 411 may be rotatably connected between the lower ends of the two side grab bars 412 around the second rotation center line Y, in which case the supporting rod 411 is only inserted in the guide groove in a sliding fit, so that the supporting rod 411 may also be designed as a special rod with any cross section such as a square, triangle, etc.

Two chutes 23 extending in the front-rear direction are formed in the seat plate 11, the two chutes 23 are parallel to each other and are respectively disposed on the left and right sides, the upper mounting seat 21 is located on the upper side of the chute 23, the lower mounting seat 22 is located on the lower side of the chute 23, and the pin shaft 211 is inserted into the corresponding chute 23, so that the backrest mounting seat 2 can slide in the front-rear direction along the chute 23, and the backrest 120 is driven to slide in the front-rear direction along the seat 110.

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

Specifically, the driving mechanism includes a driving lever 600, one end portion of the driving lever 600 is rotatably connected to the backrest mounting seat 2, and the other end portion of the driving lever 600 is rotatably connected to the frame and moves away from the fourth rotation center line X during the frame is converted from the unfolded state to the folded state, and in fact, the other end portion of the driving lever 600 is rotatably connected to one of the upper portion of the front frame 310, the upper portion of the rear frame 320, and the lower portion of the handle frame 410, and further, the other end portion of the driving lever 600 is rotatably connected to the supporting lever 411.

In this embodiment, the driving rod 600 has two driving rod joints 4111 that are matched with the two backrest installation seats 2, and two driving rod joints 4111 extending downward are fixed on the supporting rod 411. The rear end of each driving rod 600 is rotatably connected to the lower mounting seat 22 around a rotation line g, the front end of each driving rod 600 is rotatably connected to the driving rod joint 4111 around a sixth rotation center line Z, the rotation line g, the sixth rotation center line Z and the fifth rotation center line Y are parallel to each other, the sixth rotation center line Z is located below the fifth rotation center line Y, and in other embodiments, the sixth rotation center line Z and the fifth rotation center line Y may also extend collinearly.

In addition, the stroller further comprises a locking device for locking the frame in the unfolded state, which can adopt the structure in the prior art, and the utility model is not limited.

The following specifically explains the working process of this embodiment:

referring to fig. 1 to 3, when the frame is in the unfolded state, the backrest mount 2 is located at the rear end of the slide groove 23, the support bar 411 is located at the rear end of the guide groove, the backrest 120 extends rearward and upward from the rear of the seat 110, the backrest surface 120a is disposed forward, the leg rest 130 extends downward from the front of the seat 110, and the foot rest 200 is located at the first position on the front bracket 310. At this time, the foot rest 200 is positioned low, and both feet can be comfortably placed on the foot rest 200 when a child sits on the seat 110.

Referring to fig. 4 to 5, when it is required to fold the vehicle frame, the locking device is first unlocked so that the respective rods of the vehicle 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 rear support frame 430 rotate rearward about the respective rotation center lines. On the one hand, the rear portion of the seat 110 rotates around the fourth rotation center line X, the front portion of the seat 110 rotates around the fifth rotation center line Y, the fourth rotation center line X and the fifth rotation center line Y are 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 to the support rod 411 can pull the backrest mounting seat 2 rotatably connected to the other end portion of the drive rod 600 to slide forward along the slide groove 23, and further pull the backrest 120 to slide forward along the seat 110, and simultaneously the backrest 120 rotates backward to be horizontal around the rotation line h, and the back side surface 120b of the backrest 120 faces downward and is disposed opposite to the seat elevation surface 110a of the seat 110.

On the other hand, the rear support frame 430 rotates backward and closes the rear bracket 320, the sliding member 730 slides forward along the rear link 720, the front link 710 and the rear link 720 rotate and close relatively around the rotation line d, and the front bracket 310 and the rear bracket 320 are pulled to rotate and close around the rotation line c, in this process, the front link 710 rotates around the second rotation center line Q, the main body rod 711 rotates forward and closes the front rod 311, the driving rod 712 tilts backward, the connecting member 63 is pulled to move upward, so that the linkage rod 61 slides upward along the second guide slot 62, that is, the linkage moves upward along the front bracket 310, so that the foot rest 200 moves upward integrally relative to the front bracket 310, the first guide slot 52 moves upward along with the pedal connecting portion 220, and the connecting boss 51 slides downward relative to the first guide slot 52.

In short, when the entire frame is converted from the unfolded state to the folded state, the driving mechanism can be linked with the seat frame 100 to be folded, and the linkage mechanism can be linked with the foot rest 200 to slide upward.

Referring to fig. 6 to 7, when the frame is in the folded state, the front bracket 310 and the rear bracket 320 are folded relatively, 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 and the backrest 120 are closed to each other and are closed to each other with the rear bracket 320 and the rear support frame 430, the back side surface 120b is closed to the seat surface 110a, and the leg rest 130 rotates around the rotation line i and is closed to the bottom of the seat 110; the two sets of front wheel joints 31 are turned in opposite directions and gathered between the two front support rods 311 in the left-right direction, the two sets of rear wheel joints 41 are turned in opposite directions and gathered between the two rear support rods 321 in the left-right direction, the foot rest 200 is in the second position, and the front wheel body 32 is positioned below the foot rest 200. At this time, the foot rest 200 is relatively raised, so that the turnover of the front wheel assembly 3 is not affected, and the frame structure is more reasonable.

In summary, the stroller of the present embodiment has at least the following advantages compared with the prior art:

1. the frame is compact in structure in a folded state, small in occupied volume and convenient to carry and transport;

2. when the whole frame is folded, the folding of the seat frame 100 and the sliding of the foot rest 200 can be linked, no redundant steps are added, and the operation is very simple;

3. the backrest 120 is integrally arranged, so that the structure is simple, and the supporting strength is good;

4. under the prerequisite that does not increase the frame height, the frame is expanded the state, and foot rest 200 can normal use, and under the frame folded state, foot rest 200 can not disturb the upset of front wheel subassembly 3 again, adjusts in a flexible way.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a children's shallow, includes the frame that has expansion state and fold condition which characterized in that: the bicycle frame at least comprises a front bracket and a foot rest arranged on the front bracket, wherein the foot rest can be arranged on the front bracket in a relatively sliding manner along the length extension direction of the front bracket, and the foot rest is positioned at a first position on the front bracket when the bicycle frame is in an unfolded state; the frame is in under fold condition, the step frame is in the second position on the fore-stock, the first position is in be located on the fore-stock the below of second position, still be equipped with on the frame be used for the frame orders about in-process that changes between expansion state and fold condition the step frame is relative the gliding link gear of fore-stock.

2. The stroller of claim 1, wherein: the linkage mechanism comprises a linkage frame, the linkage frame is rotatably connected with the foot rest around a first rotation center line, the linkage frame can be relatively and slidably connected to the front support, the frame is further provided with a front connecting rod, the front connecting rod is rotatably connected with the front support around a second rotation center line, the end part of the front connecting rod is rotatably connected with the linkage frame around a third rotation center line, the first rotation center line, the second rotation center line and the third rotation center line are mutually parallel, and the linkage frame moves upwards along the front support in the process that the front connecting rod is rotatably folded relative to the front support.

3. The stroller of claim 2, wherein: the front bracket is provided with a connecting convex column which is rotationally connected with the front connecting rod around the second rotation center line, the foot rest is provided with a first guide groove extending along the vertical direction, and the connecting convex column is arranged in the first guide groove in a penetrating way in a sliding fit manner.

4. The stroller of claim 2, wherein: the linkage frame comprises linkage rods extending along the left and right directions, the linkage rods are connected to the foot rest in a relatively rotating mode around a first rotating center line, a second guide groove extending along the up and down directions is formed in the front support, the linkage rods are inserted into the second guide groove in a sliding fit mode, and the first rotating center line is located below the second rotating center line.

5. The stroller of claim 4, wherein: the axis of the linkage rod forms the first rotating center line, and the linkage rod is rotatably connected to the foot rest around the axis of the linkage rod.

6. The stroller of claim 4, wherein: the linkage frame is characterized by further comprising a connecting piece arranged on the linkage rod and extending backwards from the linkage rod, the front connecting rod is provided with a main rod part and a driving rod part extending downwards and backwards from the front end of the main rod part, the second rotating center line is located at the position where the main rod part and the driving rod part are connected, and the driving rod part is connected with the connecting piece in a rotating mode around the third rotating center line.

7. The stroller of claim 6, wherein: the bottom of the foot rest is provided with an accommodating groove, and the driving rod part and the connecting piece are accommodated in the accommodating groove.

8. The stroller of claim 2, wherein: the frame still includes after-poppet and back connecting rod, the upper portion of after-poppet with the upper portion of fore-stock is connected with rotating relatively, the rear portion of back connecting rod is connected with rotating rotatably on the after-poppet, the front portion of back connecting rod with the rear portion of front connecting rod is connected with rotating, the frame is by the in-process that the expansion state changes to fold condition, the before-poppet with the after-poppet rotates relatively and draws in, the before-connecting rod with the back connecting rod draws in with rotating relatively the before-poppet with between the after-poppet.

9. The stroller of claim 8, wherein: the frame further comprises a handrail frame, a rear support frame and a push rod frame, wherein two of the upper part of the front support frame, the upper part of the rear support frame and the lower part of the handrail frame are rotationally connected, the third one of the upper part of the front support frame, the upper part of the rear support frame and the lower part of the handrail frame are rotationally connected with one of the two, or the upper part of the front support frame, the upper part of the rear support frame and the lower part of the handrail frame are rotationally connected with each other, the upper part of the handrail frame is rotationally connected with 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, and the lower part of the rear support frame can be rotationally and slidably connected with the rear connecting rod.

10. Child stroller according to any of claims 1 to 9, characterized in that: the fore-stock has the branch and locates the left and right sides and all follow two preceding branch that the upper and lower direction extends, children's shallow is still including dividing and locating two sets of front wheel subassembly of front branch bottom, the front wheel subassembly includes front wheel joint and front wheel body, the front wheel joint winds the axial lead of front branch is located with rotating relatively the bottom of front branch works as when the frame is in fold condition, two sets of front wheel joint overturns in opposite directions and draws in two along the left and right direction between the front branch, the front wheel position in the below of foot rest.

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