CN213168250U - Infant stroller - Google Patents

Abstract

The utility model discloses an infant stroller, which comprises a frame, wherein the frame comprises a front foot, a rear foot, a seat supporting piece and a linkage piece, the front side of the linkage piece is pivoted with the seat supporting piece, the rear side of the linkage piece is pivoted with the rear foot, the front side of the seat supporting piece is pivoted with the front foot, and when the frame is in an unfolded state, the pivoting position of the front side of the seat supporting piece and the linkage piece is positioned at the rear side of the pivoting position of the seat supporting piece and the front foot; therefore, when the frame is in the unfolding state, the front legs, the linkage parts and the rear legs support the seat supporting parts together, and can share the weight of a child sitting in the vehicle together, so that the frame is stable in the unfolding state, and the safety in use can be ensured; and when the folding bicycle is folded, the front legs, the rear legs, the linkage parts and the seat supporting parts rotate to approach each other, so that the volume of the folded bicycle frame is small, and the folding bicycle is convenient to carry and store.

Description

Infant stroller

Technical Field

The utility model relates to an infant product field especially relates to infant's shallow.

Background

The baby stroller can be used for children to ride and parents push the front of the stroller, so that the burden of holding the children by the parents is reduced. The stroller generally includes a frame convertible between an unfolded state and a folded state, a front wheel disposed at a front lower portion of the frame, a rear wheel disposed at a rear lower portion of the frame, and a locking mechanism for locking the frame in the unfolded state.

In actual use, different infant pushchairs are provided with different frames, and some frames are unstable in an unfolded state and cannot bear the weight of children in the pushchair well, so that potential safety hazards exist during use, and the pushchair is large in volume after being folded and inconvenient to carry and store.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned shortcoming, provide an infant's shallow, when expansion state is down, its frame is stable, security when guaranteeing to use, and the frame folding volume of timber is little moreover, portable, deposit.

In order to achieve the above object, the utility model adopts the following technical scheme:

an infant stroller comprises a frame capable of being converted between an unfolded state and a folded state, and a locking mechanism for locking the frame in the unfolded state, wherein the frame comprises a front foot, a rear foot, a seat support and a linkage piece, the front side of the linkage piece is pivoted with the seat support, the rear side of the linkage piece is pivoted with the rear foot, the front side of the seat support is pivoted with the front foot, and when the frame is in the unfolded state, the pivoting position of the seat support and the front side of the linkage piece is located at the rear side of the pivoting position of the seat support and the front foot.

The frame comprises left and right side supports which are connected, and each side support comprises the front foot, the rear foot, a seat support and a linkage.

The frame further comprises a reinforcing rod, and the left side and the right side of the reinforcing rod are respectively connected with the rear side and the rear foot of the linkage part of the brackets on the two sides.

The rear side of the linkage piece is provided with a through hole which penetrates left and right, and the left and right sides of the reinforcing rod are connected with the rear foot after respectively penetrating through the through holes of the linkage pieces of the brackets at the two sides.

The rear foot is provided with an accommodating part, accommodating grooves are respectively formed in the opposite sides of the accommodating parts on the rear feet of the two side supports, and the reinforcing rod penetrates through the through hole of the linkage part and then is inserted into the accommodating grooves.

The left side and the right side of the reinforcing rod are respectively fixed with a blocking piece, so that after the reinforcing rod is connected with the linkage piece and the rear foot of the left side bracket and the right side bracket, the left side and the right side of the linkage piece of each side bracket are respectively abutted against the rear foot and the blocking piece on the same side.

The accommodating part is arranged on one side of the back instep, which is away from the front foot.

The frame further comprises a connecting pipe, the left end and the right end of the connecting pipe are respectively connected with the rear sides of the seat supporting pieces of the brackets on the two sides, and the locking mechanism is arranged among the linkage piece, the seat supporting pieces and the connecting pipe.

The linkage piece is located between back foot and the seat support piece, locking mechanical system including set up in the linkage piece towards the locking groove of seat support piece one side, with seat support piece or/and connecting pipe can move the locking piece of left and right connections relatively, when locking piece one side inserts locking inslot the frame is locked in the expanded state.

Each seat support piece rear side on the collateral branch frame all is provided with the connecting hole that runs through about, both ends are fixed connection respectively in the connecting hole of the seat support piece of both sides support about the connecting pipe.

An unlocking mechanism for unlocking the locking mechanism is provided on the connecting pipe.

The front and rear feet are arranged so that they are relatively parallel when the frame is in the extended and folded condition.

The seat support and the front foot are arranged such that the seat support and the front foot are relatively parallel when the frame is in the deployed, folded condition.

The frame further comprises a driver, the lower side of the driver is coaxially pivoted with the rear side of the front foot and the front side of the rear foot, and the driver is arranged to be parallel to the front foot and the rear foot when the frame is in a folded state.

The lower side of each side bracket is pivoted between the rear side of the front foot and the front side of the rear foot, and the seat supports of the two side brackets are connected to the opposite sides of the front foot of the left and right side brackets.

The utility model has the advantages that:

1. the structure of the frame of the baby stroller not only can ensure that the frame is stable when in an unfolded state and can ensure the use safety, but also ensures that the volume of the folded frame is small, and the frame is convenient to carry and store;

2. the utility model discloses this kind of setting of locking mechanical system and release mechanism not only makes the unblock easy and simple to handle, will be in addition the unblock under frame expansion state, and the operator need bow down to stretch out the hand and go the operation, so, can not produce the maloperation and arouse the condition emergence of locking mechanical system unblock to also avoid the maloperation unblock and lead to the unexpected folding safety problem that arouses of frame, thereby more can guarantee the security of frame under the expansion user state.

Drawings

Fig. 1 is a schematic plan view of the infant stroller of the present invention in an unfolded state;

fig. 2 is a perspective view of the infant stroller of the present invention in an unfolded state;

fig. 3 is a schematic perspective view of the infant stroller of the present invention at another angle in the unfolded state;

FIG. 4 is an exploded view of the portion A of FIG. 2;

FIG. 5 is an enlarged view of the linkage of the infant stroller of the present invention;

FIG. 6 is an enlarged view of the locking member of the stroller of the present invention;

FIG. 7 is an enlarged cross-sectional view taken along line B-B of FIG. 2;

fig. 8 is a schematic plan view of the infant stroller of the present invention during the folding process;

fig. 9 is a schematic perspective view of the infant stroller of the present invention during the folding process;

fig. 10 is a schematic plan view of the infant stroller of the present invention in a folded state;

fig. 11 is a perspective view of the stroller of the present invention in a folded state;

fig. 12 is another perspective view of the stroller frame of the present invention.

Detailed Description

As shown in fig. 1 to 11, the present invention discloses an infant stroller, which comprises a frame 1 capable of being switched between an unfolded state and a folded state, a locking mechanism for locking the frame 1 in the unfolded state, a front wheel 2 connected to the front lower part of the frame 1, and a rear wheel 3 connected to the rear lower part of the frame 1, wherein the frame 1 comprises a front foot 11, a rear foot 12 with the front side pivoted to the rear side of the front foot 11, a seat support 13, and a linkage 14, the front side of the linkage 14 is pivoted to the seat support 13, the rear side is pivoted to the rear foot 12, the front side of the seat support 13 is pivoted to the front foot 11, and when the frame is in the unfolded state, the pivoted position 140 of the front sides of the seat support 13 and the linkage 14 is located at the rear side of the pivoted position 130 of the seat support 13 and the front foot 11. In this way, when the frame 1 is in the unfolded state, the front legs 11, the linkage 14 and the rear legs 12 support the seat support 13 together, and can share the weight of a child sitting in the vehicle together, so that when in the unfolded state, the frame is stable, and the safety during use can be ensured.

In the present embodiment, the frame 1 includes left and right side frames 10 connected together, and each side frame 10 includes the front leg 11, the rear leg 12, a seat support 13, and a linkage 14.

In this embodiment, the frame 1 further includes a reinforcing rod 15, and the left and right ends of the reinforcing rod 15 are respectively connected to the rear side of the link 14 and the rear leg 12 of the corresponding side bracket 10. The setting of stiffener 15 not only can be so that the connection of both sides support 10 is more firm, but also can support 14 rear sides of linkage to this stiffener 15 can also assist linkage 14 to support the child's of taking in the car weight, so, can further guarantee the stability of frame 1 under the expansion state, thereby guarantee the utility model discloses infant's shallow is expanding the safety under the user state.

Preferably, a through hole 141 is formed in the rear side of the linkage 14, and the left and right ends of the reinforcing rod 15 respectively penetrate through the through holes 141 of the linkage 14 of the brackets 10 on the two sides and then are connected to the rear leg 12. That is, the left side of the reinforcing bar 15 passes through the through hole 141 of the link 14 of the left bracket 10 and is then connected to the rear leg 12 of the left bracket 10, and the right side of the reinforcing bar 15 passes through the through hole 141 of the link 14 of the right bracket 10 and is then connected to the rear leg 12 of the right bracket 10. So set up, not only make the equipment of linkage 14 and stiffener 15 more convenient, easy, stiffener 15 can pass through moreover linkage 14 shares child's in the car weight better, thereby further guarantees the utility model discloses security when using.

A blocking member 151 is fixed to each of the left and right sides of the stiffener 15, so that the left and right sides of the link 14 of each side bracket 10 abut against the rear leg 12 and the blocking member 151 on the same side after the stiffener 15 is connected to the link 14 and the rear leg 12 of the left and right side brackets 10. So, the linkage 14 rear side can only rotate around stiffener 15, and can not remove about heel 12 or stiffener 15 relatively to play spacing effect, and take such limit structure, not only make the equipment, the location of stiffener 15, linkage 14 and heel 12 more convenient, easy, because the removal about the linkage 14 rear side has been avoided moreover, thereby also make the carriage is more stable when under the expansion condition.

In this embodiment, the rear leg 12 is provided with an accommodating portion 121, the accommodating portions 121 of the rear legs 12 of the two side brackets are respectively provided with accommodating grooves (not shown) at opposite sides, and the reinforcing rod 15 passes through the through hole 141 of the link 14 and then is inserted into the accommodating grooves, so that the assembly is more convenient and easier. Preferably, the accommodating part 121 is arranged on one side of the rear foot 12 deviating from the front foot 11, that is, the left and right sides of the reinforcing rod 15 are connected to one side of the rear instep departing from the front foot 11, so that when the front foot 11 rotates backwards in the folding process of the frame, the reinforcing rod 15 does not interfere with the rotation of the front foot 11, so that the two front feet 11 can rotate to the space between the two rear feet 12, so that the front and rear size of the folded frame can be smaller, that is, the volume of the folded frame can be smaller, and the folding frame is convenient to carry and store.

The frame 1 further comprises a connecting pipe 16, the left end and the right end of the connecting pipe 16 are respectively connected with the rear sides of the seat supporting pieces 13 of the brackets at the two sides, the locking mechanism is arranged among the linkage piece 14, the seat supporting pieces 13 and the connecting pipe 16, and an unlocking mechanism for unlocking the locking mechanism is arranged on the connecting pipe 16. Like this, release mechanism is equivalent to being set up in the position just as high with seat support piece 13 to want the unblock during locking mechanical system, the operator need bow and stretch out the hand down and go the operation, so, can not produce the maloperation and arouse the condition emergence of locking mechanical system unblock, thereby also avoid the maloperation unblock and lead to the unexpected safety problem that folds and arouse of frame, thereby more can guarantee the security of frame under the expansion user state.

The linkage 14 is located between the rear leg 12 and the seat support 13, the locking mechanism includes a locking groove 142 disposed on one side of the linkage 14 facing the seat support 13 and a locking member 41 connected to the seat support 13 or/and the connecting tube 16 in a manner that the locking member is movable left and right relative to the seat support, when one side of the locking member 41 is inserted into the locking groove 142, the locking mechanism is in a locking state, the seat support 13 cannot rotate relative to the linkage 14, and the frame 1 is locked in an unfolded state and cannot be folded. Preferably, the locking groove 142 is located behind the pivotal connection 140 between the seat support 13 and the front side of the link 14, and is located in front of the pivotal connection between the rear side of the link 14 and the rear leg 12, i.e. in front of the reinforcing bar 15. With such an arrangement, when the frame is in the unfolded state, the connecting pipe 16, the rear side of the seat supporting member 13 and the linkage member 14 are connected through the locking member 41, and the rear side of the linkage member 14 is also connected with the rear leg 12 and the reinforcing rod 15, so that the connection of the brackets on the left side and the right side is more stable, and the connecting pipe 16 and the seat supporting member 13 can support the weight of a child in the vehicle, thereby further ensuring the stability of the frame in the unfolded state, namely ensuring the safety of the frame in the unfolded state.

In this embodiment, the rear side of the seat support 13 on each side bracket 10 is provided with a left and right through connection hole 131, the left and right ends of the connection pipe 16 are respectively fixedly connected to the connection holes 131 of the seat supports 13 of the two side brackets 10, and the side of the link 41 away from the link 14 is connected to the connection pipe 16 in a manner of moving left and right relatively. During the specific assembly, the locking member 41 is provided with a first long hole 411, correspondingly, the hole wall of the connecting hole 131 of the seat support member 13 and the connecting pipe 16 are respectively provided with corresponding round holes 132 and 161, and a rivet sequentially penetrates through the round hole 132 of the hole wall of the connecting hole 131 of the support member, the round hole 161 of the connecting pipe 16 and the first long hole 411, so as to connect the seat support member 13, the connecting pipe 16 and the locking member 41, and the locking member 41 can move left and right relative to the connecting pipe 16 and the seat support member 13. The left and right through connection holes 131 are provided at the rear side of the seat support 13 for the connection pipe 16 to be inserted and fixed, so that the connection between the seat support 13 and the connection pipe 16 is more stable and reliable, and further the stability of the vehicle frame in the unfolded state is improved.

In this embodiment, the locking mechanisms are disposed between the linkage 14, the seat support 13 and the connecting tube 16 of the left and right brackets 10, the locking members 41 of the left and right locking mechanisms are disposed in the connecting tube 16 in a left-right movable manner and spaced apart from each other, a spring 42 is disposed between the two locking members 41, and when the frame 1 is in the unfolded state, under the action of the spring 42, the ends of the left and right locking members 41, which are far away from each other, extend out of the connecting tube 16 and the connecting hole 131 of the brackets on both sides, and are inserted into the locking grooves 142 of the linkage 14 of the brackets 10 on both sides, so that the two locking mechanisms are in the locked state, and the frame 1 is locked in the unfolded state.

The unlocking mechanism comprises a button 5 which can be connected with the connecting pipe 16 in a relatively moving way, one end of the button 5 extends into the connecting pipe 16 and is matched with the two locking pieces 41 to drive the button 5, the two locking pieces 41 move relatively close to each other, so that the two locking pieces 41 are separated from the locking grooves 142 of the two linkage pieces 14, the left locking mechanism and the right locking mechanism are unlocked, and the frame 1 can be folded. Thus, the left and right locking mechanisms can be unlocked simultaneously by only operating one button 5, so that the unlocking operation is convenient.

Preferably, the two locking members 41 are each provided with a first inclined surface 412, and one side of the button 5 facing the two locking members 41 is provided with a left second inclined surface 51 and a right second inclined surface 51, so that when the button 5 is pressed, the two locking members 41 move relatively close to each other through the cooperation of the first inclined surface 412 and the second inclined surfaces 51. In this embodiment, the locking members 41 are both provided with a groove 413, and one side surface of the groove 413 is provided with the first inclined surface 412.

In this embodiment, a fixing seat 6 is fixedly secured to the connecting tube 16, and the button 5 is relatively movably connected to the fixing seat 6. The locking member 41 is further provided with a second long hole 414, and after the fixing base 6 is sleeved on the connecting pipe 16, rivets pass through the fixing base 6, the connecting pipe 16 and the second long hole 414, so that the fixing base 6 does not interfere with the left and right movement of the locking member 41. Specifically, a notch is formed in one side of the fixed seat 6, and a through hole is formed in the corresponding position of the pipe wall of the connecting pipe 16; the left side and the right side of the button 5 are respectively provided with a limiting block 52 in an outward protruding mode, one side, provided with a second inclined surface 51, of the button 5 extends into the connecting pipe 16 through the through hole of the connecting pipe 16, the other side of the button 5 is exposed out of the fixing seat 6 through the notch of the fixing seat 6, the limiting blocks 52 on the left side and the right side of the button 5 are inversely buckled on the inner wall of the periphery of the notch of the fixing seat 6, and therefore the button 5 cannot completely slide out of the fixing seat 6 from the fixing seat 6. For the convenience of assembly, the fixing base 6 includes a first fixing member 61 and a second fixing member 62 fixedly connected in a front-rear direction, so that the first fixing member 61 and the second fixing member 62 can be assembled after one side of the button 5 is inserted into the connecting pipe 16.

The frame 1 further comprises a rear cross bar 120 with left and right ends respectively connected to the lower sides of the left and right side frame rear sides 12, and a front connector 110 with left and right ends respectively connected to the lower sides of the front legs of the left and right side frames. The arrangement of the rear cross bar 120 and the front connecting member 110 can more stably connect the two side brackets.

When the bicycle frame 1 is folded, the button 5 is firstly pressed, so that the two locking pieces 41 move relatively close to each other and are disengaged from the two linkage piece locking grooves 142, the locking mechanism is unlocked, the seat supporting piece 13 can move relative to the linkage piece 14, and the spring 42 is in a compressed state; at this moment, frame 1 can be carried out and folded, and the specific folding operation is:

when the connecting pipe 16 is rotated upward, the rear side of the seat support 13 is rotated upward, the front side of the link 14 is also rotated upward, and correspondingly, the front side of the seat support 13 is rotated forward and downward, and the rear side of the link 14 is rotated backward and downward, so that the front leg 11 pivoted with the front side of the seat support 13 and the rear leg 12 pivoted with the rear side of the link 14 are relatively rotated and approached (as shown in fig. 8 and 9) until the frame 1 is completely folded, at this time, the front leg 11, the rear leg 12, the seat support 13 and the link 14 are rotated and approached with each other, and the relative positions of the reinforcing rod 15 and the rear leg 12 are unchanged (as shown in fig. 10 and 11). So, not only the utility model discloses a folding operation of infant's shallow is very simple, and the frame volume after folding is very little moreover, portable, deposit.

In this embodiment, the front leg 11 and the rear leg 12 are preferably arranged such that the front leg 11 and the rear leg 12 are relatively parallel when the frame is in the unfolded and folded state. That is, during the folding of the frame, the front leg 11 and the rear leg 12 rotate relative to each other until the front leg 11 and the rear leg 12 are parallel. So set up, can guarantee that frame 1 under fold condition is preceding back size little, guarantees that the whole volume after the frame is folding promptly is littleer. And in the present embodiment, the front legs 11 of the left and right side frames are coupled to the inner sides of the rear legs 12 of the left and right side frames, i.e., coupled to the opposite sides of the rear legs 12 of the left and right side frames. Thus, in the folded state of the frame, the two front legs 11 are located between the two rear legs 12 and are parallel to the two rear legs 12.

Preferably, the seat support 13 and the front foot 11 are arranged such that the seat support 13 is relatively parallel to the front foot 11 when the frame is in the unfolded and folded condition. With this arrangement, the front-rear dimension of the frame 1 in the folded state is not increased, and the overall volume of the frame 1 is still small. And in the present embodiment, the seat supports 13 of both side frames are attached to the inner sides of the left and right side frame front legs 11, i.e., to the opposite sides of the left and right side frame front legs 11. In the folded condition of the frame, the two seat supports 13 are located between the two front legs 11 and parallel to the two front legs 11. Since the left and right ends of the connecting tube 16 are connected to the rear sides of the left and right seat supports 13, respectively, when the two seat supports 13 are located between the two front legs 11, the connecting tube 16 is also located between the two front legs 11 without affecting the dimension of the folded frame 1 in the front-rear direction, so that the folded frame 1 is small in the front-rear direction and small in overall volume.

After the connecting pipe 16 is rotated upward, the pressing of the button 5 is released, and the ends of the two locking pieces 41, which are away from each other, are extended out of the connecting pipe 16 and the connecting hole 131 again by the restoring force of the spring 42.

Preferably, the locking member 41 is provided with an inclined surface 415 at a lower side of an end facing the locking groove 141, so that when the folded frame is unfolded, the connecting tube 16 is rotated backward and downward to drive the front leg to rotate forward, when the connecting tube 16 is rotated to a certain position, the inclined surface 415 of the locking member 41 contacts the linkage member 14, because of the existence of the inclined surface 415, the locking member 41 is pushed to move into the connecting tube 16, the spring 42 is compressed again, the connecting tube 16 continues to rotate, when the locking member 41 is aligned with the locking groove 141, the locking member 41 is locked into the locking groove 131 again under the action of the spring 42, and the frame is locked in the unfolded state again.

In this embodiment, the frame 1 further includes a left rider 7 and a right rider 7, and the lower side of the left rider 7 is coaxially pivoted with the rear side of the front leg 11 and the front side of the rear leg 12. When folding the frame 1, the rider 7 can be rotated forward or backward so that it approaches the front and rear legs 11, 12. Preferably, the rider 7 is arranged such that, in the folded state of the frame 1, the rider 7 is parallel to the front leg 11 and the rear leg 12. In this embodiment, the lower side of the rider 7 is pivotally connected between the rear side of the front leg 11 and the front side of the rear leg 12, so that when the frame 1 is in the folded state, the rear leg 12, the rider 7 and the front leg 11 of each side bracket are arranged in parallel in sequence from the outside to the inside, and the seat support 13 is arranged in parallel to the inner side of the front leg 11, so that the folded frame is very thin and flat in the front-rear direction, has a very small volume,

in other embodiments, the lower side of the rider 7 is connected to the upper side of the front leg 11 in a relatively vertically movable manner, so that the rider 7 can be moved downward when the frame 1 is folded, thereby reducing the height of the folded frame 1, and increasing the front-rear dimension of the frame, so that the overall volume of the folded frame 1 is small.

The frame 1 further comprises a push handle 8, and the lower side of the push handle 8 is connected with the handlebar 7 in a relatively up-down moving mode. When the frame 1 is unfolded, the integral height of the push handle 8 and the handle 7 is convenient for a caregiver to push the infant stroller, and when the frame 1 needs to be folded, the push handle 8 can be moved downwards, so that the integral height is reduced, and the volume of the folded frame 1 is further reduced. In other embodiments, the lower side of the push handle 8 may be pivotally connected to the upper side of the handle 7 (not shown), so that when the frame 1 is folded, the push handle 8 can be rotated forward or backward, so that the push handle 8 is close to the handle 7, thereby reducing the overall volume of the folded frame 1.

Referring to fig. 12, the stroller of the present invention further includes a seat backrest 9 pivotally connected to the rear side of the seat support 13 at the lower side. Thus, the seat support 13 and the seat back 9 form a seat frame, and the infant can sit/lie on the seat frame by laying the seat cloth upward.

Preferably, a pivoting portion 134 extends upward from the upper side of the seat support 13, and the left and right ends of the lower side of the seat back 9 are respectively pivoted with the pivoting portions 134 of the seat supports 13 of the two side frames 10. The pivot portion 134 is disposed on the upper side of the supporting base 132, so that a certain distance is formed between the lower end of the seat backrest 9 and the connecting tube 16, thereby preventing the seat backrest 9 from interfering with the button 5 to unlock the locking mechanism.

In this embodiment, the seat supporting member 13 of each side bracket 10 includes a supporting rod 135 and a supporting seat 136 fixedly connected to the rear side of the supporting rod 135, the pivot portion 134 is disposed on the upper side of the supporting seat 136, and the connecting hole 131 is also disposed on the rear side of the supporting seat 136. So set up, can make the equipment more convenient.

In other embodiments, an additional separate seat may be removably attached to the seat support 13.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (30)

1. An infant stroller including a frame that is convertible between an unfolded state and a folded state, a locking mechanism that locks the frame in the unfolded state, characterized in that: the frame comprises a front foot, a rear foot, a seat support and a linkage piece, wherein the front side of the linkage piece is pivoted with the seat support, the rear side of the linkage piece is pivoted with the rear side of the front foot, the front side of the seat support is pivoted with the front foot, and when the frame is in an unfolded state, the pivoting position of the seat support and the front side of the linkage piece is positioned at the rear side of the pivoting position of the seat support and the front foot.

2. The infant stroller of claim 1, wherein: the frame comprises left and right side supports which are connected, and each side support comprises the front foot, the rear foot, a seat support and a linkage.

3. The infant stroller of claim 2, wherein: the frame further comprises a reinforcing rod, and the left side and the right side of the reinforcing rod are respectively connected with the rear side and the rear foot of the linkage part of the brackets on the two sides.

4. The infant stroller of claim 3, wherein: the rear side of the linkage piece is provided with a through hole which penetrates left and right, and the left and right sides of the reinforcing rod are connected with the rear foot after respectively penetrating through the through holes of the linkage pieces of the brackets at the two sides.

5. The infant stroller of claim 4, wherein: the rear foot is provided with an accommodating part, accommodating grooves are respectively formed in the opposite sides of the accommodating parts on the rear feet of the two side supports, and the reinforcing rod penetrates through the through hole of the linkage part and then is inserted into the accommodating grooves.

6. The infant stroller of claim 3 or 4 or 5, wherein: the left side and the right side of the reinforcing rod are respectively fixed with a blocking piece, so that after the reinforcing rod is connected with the linkage piece and the rear foot of the left side bracket and the right side bracket, the left side and the right side of the linkage piece of each side bracket are respectively abutted against the rear foot and the blocking piece on the same side.

7. The infant stroller of claim 5, wherein: the accommodating part is arranged on one side of the back instep, which is away from the front foot.

8. The infant stroller of any one of claims 2-5, 7, wherein: the frame further comprises a connecting pipe, the left end and the right end of the connecting pipe are respectively connected with the rear sides of the seat supporting pieces of the brackets on the two sides, and the locking mechanism is arranged among the linkage piece, the seat supporting pieces and the connecting pipe.

9. The infant stroller of claim 8, wherein: the linkage piece is located between back foot and the seat support piece, locking mechanical system including set up in the linkage piece towards the locking groove of seat support piece one side, with seat support piece or/and connecting pipe can move the locking piece of left and right connections relatively, when locking piece one side inserts locking inslot the frame is locked in the expanded state.

10. The infant stroller of claim 6, wherein: the frame further comprises a connecting pipe, the left end and the right end of the connecting pipe are respectively connected with the rear sides of the seat supporting pieces of the brackets on the two sides, and the locking mechanism is arranged among the linkage piece, the seat supporting pieces and the connecting pipe.

11. The infant stroller of claim 10, wherein: the linkage piece is located between back foot and the seat support piece, locking mechanical system including set up in the linkage piece towards the locking groove of seat support piece one side, with seat support piece or/and connecting pipe can move the locking piece of left and right connections relatively, when locking piece one side inserts locking inslot the frame is locked in the expanded state.

12. The infant stroller of claim 8, wherein: each seat support piece rear side on the collateral branch frame all is provided with the connecting hole that runs through about, both ends are fixed connection respectively in the connecting hole of the seat support piece of both sides support about the connecting pipe.

13. The infant stroller of claim 12, wherein: an unlocking mechanism for unlocking the locking mechanism is provided on the connecting pipe.

14. The infant stroller of claim 9, 10 or 11, wherein: each seat support piece rear side on the collateral branch frame all is provided with the connecting hole that runs through about, both ends are fixed connection respectively in the connecting hole of the seat support piece of both sides support about the connecting pipe.

15. The infant stroller of claim 14, wherein: an unlocking mechanism for unlocking the locking mechanism is provided on the connecting pipe.

16. The infant stroller of claim 1, wherein: the front and rear feet are arranged so that they are relatively parallel when the frame is in the extended and folded condition.

17. The infant stroller of any one of claims 2-5, 7, 9-13, 15, wherein: the front and rear feet are arranged so that they are relatively parallel when the frame is in the extended and folded condition.

18. The infant stroller of claim 6, wherein: the front and rear feet are arranged so that they are relatively parallel when the frame is in the extended and folded condition.

19. The infant stroller of claim 8, wherein: the front and rear feet are arranged so that they are relatively parallel when the frame is in the extended and folded condition.

20. The infant stroller of claim 14, wherein: the front and rear feet are arranged so that they are relatively parallel when the frame is in the extended and folded condition.

21. The infant stroller of claim 16, wherein: the seat support and the front foot are arranged such that the seat support and the front foot are relatively parallel when the frame is in the deployed, folded condition.

22. The infant stroller of claim 17, wherein: the seat support and the front foot are arranged such that the seat support and the front foot are relatively parallel when the frame is in the deployed, folded condition.

23. The infant stroller of claim 18 or 19 or 20, wherein: the seat support and the front foot are arranged such that the seat support and the front foot are relatively parallel when the frame is in the deployed, folded condition.

24. The infant stroller of claim 16, wherein: the frame further comprises a driver, the lower side of the driver is coaxially pivoted with the rear side of the front foot and the front side of the rear foot, and the driver is arranged to be parallel to the front foot and the rear foot when the frame is in a folded state.

25. The infant stroller of claim 17, wherein: the frame further comprises a driver, the lower side of the driver is coaxially pivoted with the rear side of the front foot and the front side of the rear foot, and the driver is arranged to be parallel to the front foot and the rear foot when the frame is in a folded state.

26. The infant stroller of any of claims 18-20, 22, wherein: the frame further comprises a driver, the lower side of the driver is coaxially pivoted with the rear side of the front foot and the front side of the rear foot, and the driver is arranged to be parallel to the front foot and the rear foot when the frame is in a folded state.

27. The infant stroller of claim 21, wherein: the frame further comprises a driver, the lower side of the driver is coaxially pivoted with the rear side of the front foot and the front side of the rear foot, and the driver is arranged to be parallel to the front foot and the rear foot when the frame is in a folded state.

28. The infant stroller of claim 23, wherein: the frame further comprises a driver, the lower side of the driver is coaxially pivoted with the rear side of the front foot and the front side of the rear foot, and the driver is arranged to be parallel to the front foot and the rear foot when the frame is in a folded state.

29. The infant stroller of claim 25 or 28, wherein: the lower side of each side bracket is pivoted between the rear side of the front foot and the front side of the rear foot, and the seat supports of the two side brackets are connected to the opposite sides of the front foot of the left and right side brackets.

30. The infant stroller of claim 26, wherein: the lower side of each side bracket is pivoted between the rear side of the front foot and the front side of the rear foot, and the seat supports of the two side brackets are connected to the opposite sides of the front foot of the left and right side brackets.

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