CN211001518U - Children's barrow - Google Patents

Abstract

The application discloses a children cart, comprising a frame with an unfolding state and a folding state, wherein the frame comprises two side brackets which are respectively arranged at the left side and the right side, the side bracket at each side comprises a front supporting rod, a rear supporting rod, a push rod, a front connecting rod and a rear connecting rod, thus, the front connecting rod and the rear connecting rod are respectively rotatably connected with the front supporting rod and the push rod, the rear connecting rod is also respectively connected with the front connecting rod and the rear connecting rod, the front supporting rod and the rear connecting rod are mutually linked, the rear connecting rod is also mutually linked with the push rod and the rear connecting rod, for example, when the children cart enters the folding state from the unfolding state, the push rod and the rear connecting rod turn backwards, the push rod and the rear connecting rod also adaptively rotate relatively, the rear connecting rod also drives the front connecting rod to approach the rear supporting rod, the linkage among a plurality of rod pieces is enhanced, even if a certain, the plurality of bars are prevented from being blocked or stuck with each other, so that the user can easily unfold and fold the stroller.

Description

Children's barrow

Technical Field

The application relates to the technical field of children's supplies, especially, relate to a children's shallow.

Background

Some of current children's shallow possess folding function, however, when the user wants to fold the children's shallow that is in the state of expanding or expand the children's shallow that is in fold condition, often not easy, this is because in the practical application in-process, because the road surface jolts, suffers the striking or takes place to topple over, all probably leads to one or more member to receive the exogenic action to take place the aversion, stacks a plurality of members in very little space or when launching a plurality of members from very little space this moment again, the condition that probably blocks or block each other between the different members leads to children's shallow not folding, and it is more difficult to expand after folding.

Disclosure of Invention

An object of this application is to provide a children's shallow, strengthens the linkage nature between the member, reduces the member and receives the condition that external force shifted, makes the user can easily fold and expand children's shallow.

The purpose of the application is realized by adopting the following technical scheme:

the utility model provides a children's shallow, including have the frame of expansion state and fold condition, set up in anterior front wheel subassembly at the bottom of the frame with set up in rear wheel subassembly at the bottom of the frame rear portion, will the frame locking is in the locking mechanical system of expansion state, the frame is including dividing two collateral branch framves of establishing in the left and right sides, every side the collateral branch frame all includes:

a front stay extending obliquely upward from front to rear in an unfolded state of the frame;

the rear supporting rod extends obliquely upwards from back to front in the unfolded state of the frame, and the upper part of the front supporting rod is rotatably connected with the upper part of the rear supporting rod through a first shaft;

the lower part of the push rod is rotationally connected with the upper part of the front support rod through a second shaft;

the front connecting rod extends obliquely upwards from front to back in the unfolded state of the frame, and the front part of the front connecting rod is rotatably connected with the lower part of the front support rod;

the rear connecting rod extends obliquely upwards from front to back in the unfolded state of the frame, the lower part of the rear connecting rod is rotatably connected with the rear part of the front connecting rod, the upper part of the rear connecting rod is rotatably connected with the upper part of the push rod through a third shaft, and the middle lower part of the rear connecting rod is also rotatably connected with the middle upper part of the rear supporting rod;

under the folded state of the frame, the push rod is folded behind the rear supporting rod, one end of the rear connecting rod connected with the push rod is folded at the lower part of the rear supporting rod, the front supporting rod and the rear supporting rod are mutually folded, and the front connecting rod is folded between the front supporting rod and the rear supporting rod.

Optionally, the axes of the first and second shafts coincide or the first and second shafts are coaxial.

Optionally, the frame further comprises an upper cross bar, and two ends of the upper cross bar are rotatably connected with the upper parts of the two push rods through a fourth shaft;

in the deployed state of the frame, the fourth shaft is located above the third shaft.

Optionally, the side bracket of each side further comprises an upper connecting member, and the upper connecting member comprises a first connecting part and a second connecting part which are rotatably connected through the fourth shaft; the third shaft is arranged on the first connecting part or the second connecting part;

in the unfolded state of the frame, the upper part of the first connecting part is fixedly connected to one of the end parts of the upper cross rod on the same side; the lower part of the second connecting part is fixedly connected to the upper part of the push rod.

Optionally, in an unfolded state of the frame, a third clamping portion is arranged at a lower portion of an upper end of one of the rear links, and a fourth clamping portion detachably connected with the third clamping portion is arranged at an upper portion of an end portion of the upper cross bar on one side of the third clamping portion;

and under the folded state of the frame, the third clamping part and the fourth clamping part are clamped.

Optionally, the lower parts of the two front struts respectively extend towards each other and are combined into a whole, a cross rod sleeve is fixedly arranged on the periphery of the combined part, and the front part of each front connecting rod is rotatably connected with the cross rod sleeve through the third shaft.

Optionally, the frame further comprises a bottom rail, and two ends of the bottom rail are respectively fixed to the middle lower parts of the two rear support rods.

Optionally, the frame further comprises a front cross bar and a rear cross bar, two ends of the front cross bar are respectively connected with the upper parts of the two rear support rods, and two ends of the rear cross bar are respectively fixed to the non-end parts of the two rear connecting rods;

the stroller further comprises a child seat pocket mounted on the front cross bar and the rear cross bar.

Optionally, the axes of the first and second shafts coincide or the first shaft is coaxial with the second shaft;

two ends of the front cross rod are positioned on the axis of the first shaft.

Optionally, the rear wheel assembly comprises a brake mechanism, a first axle and a first rear wheel; the brake mechanism comprises a brake button, a sliding piece, a first lock pin, a second lock pin, a first spring and a second spring;

the brake button comprises a first opening, a second opening and a foot brake part; the first opening and the first axle are rotatably connected; an arc-shaped concave part is arranged on the inner wall, close to the foot brake part, of the second opening along the direction of the axis of the rear wheel, the arc-shaped concave part comprises a first concave surface, a convex surface and a second concave surface which are sequentially connected from top to bottom, and the depth of the first concave surface is smaller than that of the second concave surface;

the sliding piece is concave and is provided with a sliding convex part at the side part close to the foot brake part; the sliding convex part is provided with a sliding surface which can slide along the first concave surface, the convex surface and the second concave surface; the sliding piece is also provided with a strip-shaped opening penetrating through the sliding piece at the side part;

the first spring is arranged between the inner bottom of the sliding part and the first lock pin; the first lock pin is provided with a through hole for the second lock pin to pass through, the second lock pin passes through the first lock pin through the through hole and can slide along the length direction of the strip-shaped opening, and the first lock pin is detachably clamped with the first rear wheel;

the second spring is arranged between the top of the sliding piece and the first rear wheel and is wound on the periphery of the first lock pin;

the first wheel shaft is arranged between the brake button and the first rear wheel and fixedly connected with the first rear wheel; the first axle is provided with an axle through hole for accommodating the first lock pin to pass through, and the size of the axle through hole is smaller than that of the second spring.

Compared with the prior art, the beneficial effects of the application lie in:

the application discloses children's shallow sets up preceding connecting rod and back connecting rod and rotationally connects preceding branch and push rod respectively, and the back connecting rod still is connected respectively with preceding connecting rod, back connecting rod, and preceding connecting rod and preceding branch, back connecting rod are linked each other, and the back connecting rod still links each other with between push rod, the back connecting rod. For example, when the stroller enters a folded state from an unfolded state, the push rod and the rear connecting rod turn backwards, the push rod and the rear connecting rod also rotate relatively in an adaptive manner, and the rear connecting rod also drives the front connecting rod to approach the rear supporting rod.

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 illustrates a perspective view of a stroller provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram illustrating a positional relationship between a front strut, a rear strut, and a first axis provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram illustrating a positional relationship between a front support rod, a push rod and a second shaft according to an embodiment of the present disclosure;

fig. 4 is a perspective view of a stroller with a child seat pocket according to an embodiment of the present application;

FIG. 5 is a perspective view of a child seat pocket according to an embodiment of the present application;

FIG. 6 illustrates an exploded view of an unlock button, lock, first connector and second connector provided in accordance with an embodiment of the present application;

FIG. 7 is a schematic structural diagram illustrating a second connecting member according to an embodiment of the present disclosure;

FIG. 8 illustrates a schematic structural view of a rear wheel assembly provided by embodiments of the present application;

FIG. 9 is a schematic diagram illustrating a brake mechanism and a first axle according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a brake button according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram illustrating a positional relationship among a slider, a first lock pin, a second lock pin, a first spring and a second spring according to an embodiment of the present disclosure;

FIG. 12 illustrates a schematic view of a first axle provided by an embodiment of the present application;

fig. 13 is a schematic structural diagram of a first rear wheel according to an embodiment of the present application.

In the figure: 10. a child seat pocket; 11. a surrounding rod; 12. turning over the rod; 121. an additional rod; 13. a lock; 131. a first engaging portion; 132. a second card portion; 14. a first connecting member; 141. a first recess; 142. a third recess; 15. a second connecting member; 151. a second recess; 152. a fourth recess; 153. the recess is open; 16. an unlock button; 161. a button body; 162. a protruding portion; 17. a seat post; 18. a first upright rod; 19. a second upright stanchion; 211. a front support rod; 212. a rear support rod; 213. a push rod; 214. a front link; 215. a rear connecting rod; 216. a cross bar sleeve; 2171. a first connection portion; 2172. a second connecting portion; 2181. a third card part; 2182. a fourth engaging portion; 221. a first shaft; 222. a second shaft; 223. a third axis; 224. a fourth axis; 231. an upper cross bar; 232. a lower cross bar; 233. a front cross bar; 234. a rear cross bar; 241. a brake button; 2411. a first opening; 2412. a second opening; 2414. a first concave surface; 2415. a convex surface; 2416. a second concave surface; 2413. a foot brake part; 242. a slider; 2421. a sliding surface; 2422. a strip-shaped opening; 243. a first lock pin; 244. a second lock pin; 245. a first spring; 246. a second spring; 247. a first axle; 2471. a wheel axle through hole; 248. a first rear wheel; 2481. a rear wheel hole.

Detailed Description

The present application is further described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the present application, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1 to 3, the present application provides a stroller including a frame having an unfolded state and a folded state, a front wheel assembly disposed at a front portion of a bottom of the frame, a rear wheel assembly disposed at a rear portion of the bottom of the frame, and a locking mechanism for locking the frame in the unfolded state, wherein the frame includes two side brackets disposed at left and right sides.

The side brackets on each side include a front strut 211, a rear strut 212, a push rod 213, a front link 214, and a rear link 215.

The front stay 211 extends obliquely upward from front to rear in the unfolded state of the frame; the rear strut 212 extends obliquely upward and forward from the rear in the unfolded state of the frame, and the upper part of the front strut 211 is rotatably connected with the upper part of the rear strut 212 by a first shaft 221; the lower part of the push rod 213 is rotatably connected with the upper part of the front support rod 211 through a second shaft 222; the front link 214 extends obliquely upward from front to rear in the unfolded state of the frame, and the front portion of the front link 214 is rotatably connected to the lower portion of the front link 211; the rear link 215 extends obliquely upward from front to rear in the deployed state of the vehicle frame, a lower portion of the rear link 215 is rotatably connected to a rear portion of the front link 214, an upper portion of the rear link 215 is rotatably connected to an upper portion of the push rod 213 via a third shaft 223, and a middle-lower portion of the rear link 215 is also rotatably connected to a middle-upper portion of the rear link 212.

In the folded state of the frame, the push rod 213 is folded behind the rear support rod 212, one end of the rear link 215 connected with the push rod 213 is folded to the lower part of the rear support rod 212, the front support rod 211 and the rear support rod 212 are mutually folded, and the front link 214 is folded between the front support rod 211 and the rear support rod 212.

In some embodiments, the axes of first shaft 221 and second shaft 222 coincide or first shaft 221 is coaxial with second shaft 222. Thus, the push rod 213 and the front support rod 211, and the front support rod 211 and the rear support rod 212 rotate relatively around the same axis, so that the stroller has a more compact structure, a small volume and a small occupied space.

In some embodiments, the frame further comprises an upper cross bar 231, both ends of the upper cross bar 231 are rotatably connected with the upper portions of the two push rods 213 through a fourth shaft 224, and the fourth shaft 224 is located above the third shaft 223 in the unfolded state of the frame. Therefore, a user can push the baby stroller through the upper cross rod 231, the force application part can be arranged in the middle of the stroller, force application habits of people are met, and user experience is improved; meanwhile, the fourth shaft 224 is located above the third shaft 223, so that when the push rod 213 is turned backwards, the push rod will always be outside the rear connecting rod 215, and the situation that the rod is blocked due to the overlapping of the two positions is avoided; the upper cross bar 231 also improves the stability of the entire frame in the lateral direction.

In some embodiments, the side brackets of each side further include an upper link comprising a first link portion 2171 and a second link portion 2172 rotationally coupled via a fourth shaft 224; the third shaft 223 is provided to the first connection portion 2171 or the second connection portion 2172, and in the unfolded state of the vehicle frame, an upper portion of the first connection portion 2171 is fixedly connected to one of the end portions of the upper crossbar 231 on the same side, and a lower portion of the second connection portion 2172 is fixedly connected to an upper portion of the push rod 213. Thus, the push rod 213 and the rear connecting rod 215 are rotatably connected through the single upper connecting piece, and even if the upper connecting piece is damaged due to frequent rotation, only the upper connecting piece can be replaced without replacing the push rod 213 and the rear connecting rod 215 together, so that the maintenance cost of the stroller is reduced.

In some embodiments, in the unfolded state of the frame, the lower portion of the upper end of one of the rear links 215 is provided with a third locking portion 2181, the upper portion of the end portion of the upper cross bar 231 on the side of the third locking portion 2181 is provided with a fourth locking portion 2182 detachably connected with the third locking portion 2181, and in the folded state of the frame, the third locking portion 2181 and the fourth locking portion 2182 are locked. Therefore, after the stroller is folded, the stroller frame can be locked through simple clamping, and the stroller frame is prevented from being scattered.

In some embodiments, the lower portions of the two front struts 211 extend toward each other and are combined into a whole, a cross bar sleeve 216 is fixedly disposed on the periphery of the combined portion, and the front portion of each front link 214 is rotatably connected to the cross bar sleeve 216. In this way, the two front struts 211 are kept synchronous, and the front struts 211 are rotatably connected with the front connecting rod 214 through the independent cross rod sleeve 216, so that even if the cross rod sleeve 216 is damaged due to frequent rotation, only the cross rod sleeve 216 can be replaced without replacing the front struts 211 together, the maintenance cost of the stroller is reduced, and in addition, the whole frame can be more beautiful in aesthetic point of view.

In some embodiments, the frame further includes a bottom cross bar 232, and both ends of the bottom cross bar 232 are respectively fixed to the middle lower portions of the two rear struts 212. Thus, the bottom rail 232 connects the two rear struts 212, maintains the synchronism between the two rear struts 212, and improves the stability of the entire frame in the lateral direction.

Referring to fig. 4, in some embodiments, the frame further includes a front cross bar 233 and a rear cross bar 234, both ends of the front cross bar 233 are respectively connected to upper portions of the two rear struts 212, both ends of the rear cross bar 234 are respectively fixed to non-end portions of the two rear links 215, and the stroller further includes a child seat pocket 10 mounted on the front cross bar 233 and the rear cross bar 234. Thus, the child seat pocket 10 can be mounted on the front rail 233 and the rear rail 234, and the two rails can bear the weight together, thereby increasing the safety of the stroller.

Referring to fig. 5, the seat bag for children 10 includes a rail 11, a tilt bar 12, and two seat bag side frames symmetrically disposed at left and right sides. Wherein, the surrounding rod 11 and the turning rod 12 can adopt U-shaped structures.

Referring to fig. 6, the seat pocket side frame of each side includes a locking member 13 and first and second links 14 and 15 pivotally coupled to each other.

Two ends of the surrounding rod 11 are respectively connected with a first connecting piece 14, and two ends of the turning rod 12 are respectively connected with a second connecting piece 15, or two ends of the surrounding rod 11 are respectively connected with a second connecting piece 15, and two ends of the turning rod 12 are respectively connected with a first connecting piece 14.

Referring to fig. 6 and 7, the locking member 13 is provided with a first locking portion 131, the first connecting member 14 is provided with a first recess 141 capable of being locked with the first locking portion 131, the second connecting member 15 is provided with at least two second recesses 151 capable of being locked with the first locking portion 131, a depth of the first recess 141 is not less than a thickness of the locking member 13, a resetting member (not shown) is further disposed in the first recess 141, the resetting member enables the locking member 13 to have a movement tendency away from the first recess 141, and a recess opening 153 penetrating the second recess 151 and exposing a portion of the locking member 13 is disposed at a bottom of the second recess 151. The locking piece 13 is movably clamped with the first connecting piece 14 and the second connecting piece 15, wherein the locking piece 13 is detachably clamped with the second connecting piece 15, the locking piece 13 can be detachably clamped with the first connecting piece 14, and the locking piece 13 can also be connected with the resetting piece.

When locking element 13 is not subjected to external force, locking element 13 is partially positioned in first concave portion 141 and partially positioned in any second concave portion 151; when locking member 13 is subjected to an external force at recess opening 153, locking member 13 may be completely disengaged from second recess 151. Like this, only both hands press the latch 13 of both sides simultaneously and just can remove the locking to children's seat pocket 10, realize the relative rotation between turnover pole 12, the surrounding rod 11, and latch 13 of opposite side keeps locking when unilateral latch 13 is pressed, and children's seat pocket 10 can not the unblock. Also, during the relative rotation of the first link 14 and the second link 15, the angle at which the relative rotation occurs between the two is related to the included angle between the different second recesses 151 of the second link 15. For example, when the second connecting member 15 is provided with two second concave portions 151 having an included angle of 60 degrees, the first connecting member 14 and the second connecting member 15 can rotate relative to each other by 60 degrees; when the second connecting member 15 is provided with three second concave portions 151 and the included angles between two adjacent second concave portions 151 are 60 degrees and 90 degrees, respectively, the first connecting member 14 and the second connecting member 15 can rotate relative to each other by 60 degrees and 150 degrees; when the second connection member 15 is provided with four second recesses 151 and the included angles between two adjacent second recesses 151 are 90 degrees, the first connection member 14 and the second connection member 15 can rotate relatively by 90 degrees, 180 degrees, 270 degrees, and 360 degrees.

In some embodiments, the return member is a spring. The spring has mature process and lower cost.

In some embodiments, the depth of second recess 151 is less than the thickness of locking element 13, and when locking element 13 is not subject to external forces, the reset element and second recess 151 allow locking element 13 to be partially disposed in first recess 141 and partially disposed in any of second recesses 151. Thus, even if the reset piece is always in a compressed state, the locking piece 13 cannot completely enter the second concave portion 151, and the user is prevented from needing to press a large distance inwards to unlock the locking piece 13.

In some embodiments, the locking member 13 is provided with two first locking portions 131 opposite to each other, the first connecting member 14 is provided with two first recesses 141 opposite to each other and engageable with the first locking portions 131, and the second connecting member 15 is provided with two second recesses 151 opposite to each other and engageable with the first locking portions 131. In this way, only 180 degrees of relative rotation between the first and second connectors 14 and 15 is possible, and the two opposite first catching portions 131 can stabilize the engagement between the locking member 13 and the first and second connectors 14 and 15.

In some embodiments, locking element 13 is further provided with two oppositely located second locking portions 132, first connecting element 14 is further provided with two oppositely located third recesses 142 engageable with second locking portions 132, and second connecting element 15 is further provided with two oppositely located fourth recesses 152 engageable with second locking portions 132. Like this, increase two second card portions 132, make the joint between latch fitting 13 and first connecting piece 14, the second connecting piece 15 further stable, even there is some card portions to skid or fracture, do not influence other card portions and continue to realize the effect of movably joint. Optionally, the bottom of fourth recess 152 is provided with a recess opening 153 that extends through fourth recess 152 and exposes a portion of lock 13.

In some embodiments, a line connecting the two first card portions 131 is perpendicular to a line connecting the two second card portions 132. Thus, the symmetrical structure improves the stability of the child seat pocket 10.

In some embodiments, the first and second card portions 131 and 132 have the same structure. Thus, four same clamping parts are uniformly distributed at the edge of the locking part 13, the included angle between every two clamping parts is 90 degrees, the relative rotation angle between the first connecting part 14 and the second connecting part 15 is always 90 degrees or a multiple of 90 degrees, and the highly symmetrical structure further improves the stability of the child seat pocket 10.

In some embodiments, each side of the seat pocket side frame further comprises an unlocking button 16, the unlocking button 16 comprises a button body 161 and a protrusion 162, the protrusion 162 passes through the recess opening 153 and movably abuts against the locking member 13, and the protrusion 162 is movably clamped with the recess opening 153. Like this, the user is when the unblock, and not direct contact latch fitting 13, but press unlock button 16, avoid latch fitting 13 directly to expose outside, lead to dust, rainwater, grease on the staff or unrestrained beverage etc. to pollute latch fitting 13 or get into the gap between latch fitting 13 and first connecting piece 14, the second connecting piece 15, influence latch fitting 13's performance and life.

In the present embodiment, the number of the protrusions 162 and the number of the recess openings 153 may be the same, and the plurality of recess openings 153 are uniformly distributed along the inside of the edge of the second recess 151, and the plurality of protrusions 162 are uniformly distributed along the inside of the edge of the button body 161. In some embodiments, the number of recess openings 153 is four, four recess openings 153 are evenly distributed along the inside of the edge of the second recess 151, the number of protrusions 162 is four, and four protrusions 162 are evenly distributed along the inside of the edge of the button body 161. Like this, four extensions 162 are butt latch fitting 13 respectively, four position atress on latch fitting 13, and the atress is comparatively even, avoids button body 161 atress inhomogeneous to lead to the damage, avoids latch fitting 13 long-time atress inhomogeneous to lead to the skew to appear in the joint between latch fitting 13 and first connecting piece 14, the second connecting piece 15, blocks when causing latch fitting 13 unblock.

With continued reference to fig. 5, in some embodiments, the two ends of the rail 11 are respectively connected to a second connecting member 15, the two ends of the turnup bar 12 are respectively connected to a first connecting member 14, the seat bag side frame on each side further includes a seat bar 17, a first upright bar 18 and a second upright bar 19, the upper portion of the first upright bar 18 is rotatably connected to the first connecting member 14, the lower portion of the first upright bar 18 is rotatably connected to the non-end portion of the seat bar 17, the upper portion of the second upright bar 19 is rotatably connected to the second connecting member 15, and the lower portion of the second upright bar 19 is rotatably connected to the rear end portion of the seat bar 17. In this way, the introduction of the second upright rod 19 makes the flip rod 12 turn backward only when rotated, and even if the child seat pocket 10 enters the folded state from the unfolded state, the flip rod 12 will not turn forward to clamp the child, further improving the safety of the child seat pocket 10.

In some embodiments, the child seat pocket 10 further includes an additional lever 121, and both ends of the additional lever 121 are rotatably connected to upper portions of both ends of the flip lever 12, respectively. Thus, the umbrella can be respectively connected with the additional rod 121 and the turnover rod 12, and the folding and unfolding of the umbrella are realized.

With continued reference to fig. 4, the present embodiment also provides a stroller equipped with the seat pocket 10 of any one of the above embodiments.

With continued reference to fig. 1, in some embodiments, the axes of first shaft 221 and second shaft 222 coincide or first shaft 221 and second shaft 222 are coaxial, and the ends of front crossbar 233 are located on the axis of first shaft 221. Thus, the relative rotation between the push rod 213 and the front rod 211, and between the front rod 211 and the rear rod 212, is around the same axis, and the front cross bar 233 is also located on the axis, so that the structure of the stroller is more compact, and the stability of the frame in the lateral direction can be improved by the front cross bar 233.

Referring to fig. 8-11, in some embodiments, the rear wheel assembly includes a brake mechanism, a first axle 247, and a first rear wheel 248.

Referring to fig. 9 and 11, the brake mechanism includes a brake button 241, a slider 242, a first lock pin 243, a second lock pin 244, a first spring 245, and a second spring 246.

Referring to fig. 10, the brake button 241 includes a first opening 2411, a second opening 2412, and a footbrake portion 2413; the first opening 2411 is rotatably connected to the shaft portion of the first rear wheel 248; the second opening 2412 is provided with an arc-shaped concave part in the direction of the axis of the rear wheel near the inner wall of the foot brake part 2413, the arc-shaped concave part comprises a first concave surface 2414, a convex surface 2415 and a second concave surface 2416 which are connected in sequence from top to bottom, and the depth of the first concave surface 2414 is smaller than that of the second concave surface 2416. Optionally, the brake button 241 is spherical to prevent scratching of the shoe or foot.

Referring to fig. 11, the sliding member 242 is recessed and provided with a sliding protrusion at a side portion near the footbrake portion 2413; the sliding protrusion is provided with a sliding surface 2421 slidable along the first concave surface 2414, the convex surface 2415 and the second concave surface 2416; the slider 242 is also provided at the side with a bar-shaped opening 2422 penetrating the slider 242; a first spring 245 is disposed between the inner bottom of the slider 242 and the first locking pin 243; the first locking pin 243 is provided with a locking pin through hole (not shown) for receiving the second locking pin 244 therethrough, the second locking pin 244 passes through the first locking pin 243 through the locking pin through hole and is slidable along the length direction of the strip-shaped opening 2422, and the first locking pin 243 is detachably engaged with the first rear wheel 248; the second spring 246 is disposed between the top of the slider 242 and the first rear wheel 248 and wound around the outer circumference of the first lock pin 243; the first wheel axle 247 is disposed between the brake button 241 and the first rear wheel 248, and the first wheel axle 247 is fixedly connected to the first rear wheel 248.

Referring to fig. 12, the first axle 247 is provided with an axle through hole 2471 receiving the first locking pin 243 therethrough, and the axle through hole 2471 is smaller in size than the second spring 246.

The second locking pin 244 serves to prevent the first locking pin 243 from being separated from the slider 242, and alternatively, the second locking pin 244 and the first locking pin 243 may be integrated.

Referring to fig. 13, optionally, the first rear wheel 248 is provided with one or more rear wheel holes 2481, and the first locking pin 243 is detachably engaged with any one of the rear wheel holes 2481 through the wheel axle through hole 2471.

Thus, when the user steps on the foot brake part 2413, the arc-shaped concave part moves downwards, the sliding convex part slides to abut against the first concave surface 2414 through the convex surface 2415, the elastic force of the first spring 245 pushes the first lock pin 243 to move outwards to pass through the axle through hole 2471 and be clamped with the first rear wheel 248, the first rear wheel 248 stops moving, and the child cart brakes; when the user lifts the foot brake part 2413, the arc-shaped concave part moves upwards, the sliding convex part slides to abut against the second concave surface 2416 through the convex surface 2415, the sliding part 242 is pushed inwards by the elastic force of the second spring 246, the first lock pin 243 is not clamped with the first rear wheel 248 any more, and the child stroller can be pushed normally.

The foregoing description and drawings are only for purposes of illustrating the preferred embodiments of the present application and are not intended to limit the present application, which is, therefore, to the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present application.

Claims (10)

1. The utility model provides a children's shallow, including have the frame of expansion state and fold condition, set up in anterior front wheel subassembly at the bottom of the frame with set up in rear wheel subassembly at the bottom of the frame rear portion, will the frame locking is in the locking mechanical system of expansion state, the frame is including dividing two collateral branch framves of establishing in the left and right sides, its characterized in that, every side the collateral branch frame all includes:

a front stay extending obliquely upward from front to rear in an unfolded state of the frame;

the rear supporting rod extends obliquely upwards from back to front in the unfolded state of the frame, and the upper part of the front supporting rod is rotatably connected with the upper part of the rear supporting rod through a first shaft;

the lower part of the push rod is rotationally connected with the upper part of the front support rod through a second shaft;

the front connecting rod extends obliquely upwards from front to back in the unfolded state of the frame, and the front part of the front connecting rod is rotatably connected with the lower part of the front support rod;

the rear connecting rod extends obliquely upwards from front to back in the unfolded state of the frame, the lower part of the rear connecting rod is rotatably connected with the rear part of the front connecting rod, the upper part of the rear connecting rod is rotatably connected with the upper part of the push rod through a third shaft, and the middle lower part of the rear connecting rod is also rotatably connected with the middle upper part of the rear supporting rod;

under the folded state of the frame, the push rod is folded behind the rear supporting rod, one end of the rear connecting rod connected with the push rod is folded at the lower part of the rear supporting rod, the front supporting rod and the rear supporting rod are mutually folded, and the front connecting rod is folded between the front supporting rod and the rear supporting rod.

2. Child stroller according to claim 1, characterized in that the axes of the first and second shafts coincide or the first shaft and the second shaft are coaxial.

3. The stroller of claim 1, wherein the frame further comprises an upper cross bar, and two ends of the upper cross bar are rotatably connected to the upper portions of the two push rods through a fourth shaft;

in the deployed state of the frame, the fourth shaft is located above the third shaft.

4. The stroller of claim 3, wherein the side brackets of each side further comprise an upper link comprising a first link portion and a second link portion pivotally connected by the fourth axis; the third shaft is arranged on the first connecting part or the second connecting part;

in the unfolded state of the frame, the upper part of the first connecting part is fixedly connected to one of the end parts of the upper cross rod on the same side; the lower part of the second connecting part is fixedly connected to the upper part of the push rod.

5. The stroller of claim 3, wherein in the unfolded state of the frame, a lower portion of an upper end of one of the rear links is provided with a third engaging portion, and an upper portion of an end portion of the upper rail on a side of the third engaging portion is provided with a fourth engaging portion detachably connected to the third engaging portion;

and under the folded state of the frame, the third clamping part and the fourth clamping part are clamped.

6. The stroller of claim 1, wherein the lower portions of the two front struts respectively extend toward each other and are combined into a whole, a cross bar sleeve is fixedly disposed on the outer circumference of the combined portion, and the front portion of each front link is rotatably connected to the cross bar sleeve through the third shaft.

7. The stroller of claim 1, wherein the frame further comprises a bottom cross bar, and two ends of the bottom cross bar are respectively fixed to the middle lower parts of the two rear support bars.

8. The stroller of claim 1, wherein the frame further comprises a front cross bar and a rear cross bar, wherein two ends of the front cross bar are respectively connected to the upper parts of the two rear support rods, and two ends of the rear cross bar are respectively fixed to the non-end parts of the two rear connection rods;

the stroller further comprises a child seat pocket mounted on the front cross bar and the rear cross bar.

9. The stroller of claim 8, wherein the axes of the first and second shafts coincide or the first and second shafts are coaxial;

two ends of the front cross rod are positioned on the axis of the first shaft.

10. The stroller of claim 1, wherein the rear wheel assembly comprises a brake mechanism, a first wheel axle, and a first rear wheel; the brake mechanism comprises a brake button, a sliding piece, a first lock pin, a second lock pin, a first spring and a second spring;

the brake button comprises a first opening, a second opening and a foot brake part; the first opening and the first axle are rotatably connected; an arc-shaped concave part is arranged on the inner wall, close to the foot brake part, of the second opening along the direction of the axis of the rear wheel, the arc-shaped concave part comprises a first concave surface, a convex surface and a second concave surface which are sequentially connected from top to bottom, and the depth of the first concave surface is smaller than that of the second concave surface;

the sliding piece is concave and is provided with a sliding convex part at the side part close to the foot brake part; the sliding convex part is provided with a sliding surface which can slide along the first concave surface, the convex surface and the second concave surface; the sliding piece is also provided with a strip-shaped opening penetrating through the sliding piece at the side part;

the first spring is arranged between the inner bottom of the sliding part and the first lock pin; the first lock pin is provided with a lock pin through hole for allowing the second lock pin to pass through, the second lock pin passes through the first lock pin through the lock pin through hole and can slide along the length direction of the strip-shaped opening, and the first lock pin is detachably clamped with the first rear wheel;

the second spring is arranged between the top of the sliding piece and the first rear wheel and is wound on the periphery of the first lock pin;

the first wheel shaft is arranged between the brake button and the first rear wheel and fixedly connected with the first rear wheel; the first axle is provided with an axle through hole for accommodating the first lock pin to pass through, and the size of the axle through hole is smaller than that of the second spring.

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