CN109436076B - Baby handcart - Google Patents

Abstract

The invention discloses a baby handcart, which comprises a frame and a frame locking assembly, wherein the frame is in an unfolding state and a folding state, and the frame locking assembly locks the frame in the unfolding state; the frame includes laterally spaced apart left and right brackets and a cross member positioned between the left and right brackets; the left bracket and the right bracket comprise a front bracket, a rear bracket and a push rod, the upper end of the front bracket and the upper end of the rear bracket are rotationally connected with two of the lower ends of the push rod, and the other is rotationally connected with at least one of the two; an operating component is arranged on the cross member or the rear bracket in an operating way; when the operation assembly is pulled upwards, the frame locking assembly can be driven to unlock, the operation assembly is pulled upwards continuously, and the front support, the rear support and the push rod are closed under the action of gravity. According to the invention, through the arrangement of the operation assembly, the frame locking assembly can be driven to unlock by one hand, so that the folding of the handcart is realized, the structure is simple, and the operation is easy.

Description

Baby handcart

Technical Field

The invention relates to the technical field of baby strollers, in particular to a baby stroller.

Background

The existing baby handcart has complex structure, more parts and difficult operation.

Therefore, there is a need for a simple structure, easy to operate stroller.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the baby handcart which has a simple structure and is easy to operate.

The technical scheme of the invention provides a baby handcart, which comprises a frame and a frame locking assembly, wherein the frame is in an unfolding state and a folding state, and the frame locking assembly locks the frame in the unfolding state;

the frame includes laterally spaced left and right brackets, and a cross member positioned between the left and right brackets;

the left bracket and the right bracket comprise a front bracket, a rear bracket and a push rod, the upper end of the front bracket and the upper end of the rear bracket are rotationally connected with two of the lower ends of the push rod, and the other one is rotationally connected with at least one of the two;

an operating assembly is operably disposed on the cross member or the rear bracket;

when the operation assembly is pulled upwards, the frame locking assembly can be driven to unlock, the operation assembly is pulled upwards continuously, and the front support, the rear support and the push rod are closed and folded under the rotation of the transverse member or the rear support and the action of gravity.

Further, the operation assembly comprises a linkage piece which is rotatably or slidably arranged on the transverse member, and the linkage piece is connected with the frame locking assembly through a connecting wire.

Further, the operation assembly further comprises a pulling piece, wherein the pulling piece is connected with the linkage piece and extends upwards, and when the pulling piece is pulled upwards, the linkage piece can be driven to unlock the frame locking assembly.

Further, the pulling piece is a braid, the braid is connected with the linkage piece, and when the braid is pulled, the braid drives the linkage piece to rotate positively.

Further, the operation assembly further comprises a return torsion spring, and the return spring is connected with the linkage piece;

when the linkage member rotates positively, the return torsion spring is twisted;

when the webbing is released, the return torsion spring drives the linkage piece to rotate reversely.

Further, the cross member includes a seat bar and a connection piece, an end of the seat bar is rotatably connected with one end of the connection piece, the other end of the connection piece is rotatably connected with the front bracket, and a middle section of the seat bar is rotatably connected with the rear bracket.

Further, the linkage piece is sleeved at the rear section of the seat rod.

Further, the connecting wire is connected with the operating assembly through the seat post, the connecting piece and the front bracket.

Further, the frame locking assembly comprises a first pivoting piece, a second pivoting piece, a rotating shaft and a locking plate, wherein the first pivoting piece and the second pivoting piece are connected through the rotating shaft and can rotate around the rotating shaft, and the locking plate slides in the first pivoting piece to be unlocked;

the first pivoting piece is connected with the upper end part of the front bracket, and the second pivoting piece is connected with the lower end part of the push rod.

After the technical scheme is adopted, the method has the following beneficial effects:

according to the invention, the frame locking component can be driven to unlock through the operation component, so that the handcart can be folded by one hand, and the structure is simple and the operation is easy.

Drawings

The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. In the figure:

FIG. 1 is a side perspective view of a stroller in accordance with an embodiment of the present invention;

FIG. 2 is a top perspective view of a stroller in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view showing a partial structure of a stroller according to a first embodiment of the present invention;

FIG. 4 is a schematic view of a portion of a stroller with a linkage omitted;

FIG. 5 is a schematic view of a frame locking assembly of a stroller in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view illustrating an inner side of a first pivot member of a frame locking assembly according to an embodiment of the present invention;

FIG. 7 is a schematic view illustrating an inner side structure of a second pivot member of the frame locking assembly according to the first embodiment of the present invention;

FIG. 8 is a schematic view illustrating an inner side structure of a locking tab and a second pivot member of a frame locking assembly according to an embodiment of the present invention;

FIG. 9 is a schematic view showing an inner side structure of a locking tab and a first pivot member of a frame locking assembly according to an embodiment of the present invention;

FIG. 10 is a partial perspective view of a frame locking assembly according to a second embodiment of the present invention;

FIG. 11 is a partial perspective view of the second embodiment of the present invention with the first pivot member omitted from the frame locking assembly;

FIG. 12 is a partial perspective view of a first pivot member of the frame locking assembly of the second embodiment of the present invention;

FIG. 13 is a partial top view of the second embodiment of the present invention with the first pivot member omitted;

FIG. 14 is a partial exploded view of a frame locking assembly according to a second embodiment of the present invention;

fig. 15 is a view showing a retracted state of the stroller according to the second embodiment of the present invention.

Reference numeral control table:

1-first pivot 2-second pivot 3-locking plate

4-front bracket 5-push rod 6-dinner plate

7-rear bracket 8-support tube 9-rotating shaft

10-linkage 11-chute 12-first shaft slot

13-first pipe body 14-first arc-shaped piece 15-first connecting piece

16-seat post 17-connecting piece 21-slot

22-second axial slot 23-second pipe 24-second arc piece

25-second connector 31-limit post 101-collar

102-guide groove 161-limit groove 241-arc-shaped limit groove

242-notch

1' -first pivoting piece 2' -second pivoting piece 3' -locking piece

4' -front support 5' -push rod 6' -rear support

7' -stay tube 11' -slide rail 12' -first shaft hole

13' -first tubular body 14' -first arcuate shell 15' -first connecting piece

21' -boss 22' -second shaft hole 23' -second pipe body

24' -second arcuate tab 25' -second connector 26' -insert

241' -insertion groove 261' -insertion portion 262' -insertion portion

263' -convex part

Detailed Description

Specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

It is to be readily understood that, according to the technical solutions of the present invention, those skilled in the art may replace various structural modes and implementation modes with each other without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.

Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms.

Embodiment one:

referring to fig. 1-9, fig. 1-9 are schematic structural views of a stroller according to a first embodiment of the present invention.

As shown in fig. 1-2, the stroller includes a frame having an expanded state and a collapsed state, and a frame locking assembly locking the frame in the expanded state;

the frame includes laterally spaced left and right brackets and a cross member positioned between the left and right brackets;

the left bracket and the right bracket respectively comprise a front bracket 4, a rear bracket 7 and a push rod 5, wherein the upper end of the front bracket 4 and the upper end of the rear bracket 7 are rotationally connected with two of the lower ends of the push rod 5, and the other is rotationally connected with at least one of the two;

an operating assembly is operatively provided on the cross member or rear bracket 7;

when the operation assembly is pulled upwards, the frame locking assembly can be driven to unlock, the operation assembly is pulled upwards continuously, and the front support 4, the rear support 7 and the push rod 5 are closed under the action of gravity and rotation of the transverse member or the rear support.

In particular, as shown in fig. 2-3, the operating assembly includes a linkage member 10 rotatably or slidably disposed in the cross member, the linkage member 10 being connected to the frame locking assembly by a connecting wire.

The operating assembly further comprises a pulling member which is connected to the linkage member 10 and extends upwards, and when the pulling member is pulled upwards, the linkage member 10 can be driven to unlock the frame locking assembly.

The pulling piece is a braid, the braid is connected with the linkage piece 10, and when the braid is pulled, the braid drives the linkage piece to rotate positively.

As shown in fig. 3, the webbing is connected to a collar 101 on the link 10, and when the webbing is pulled, the webbing rotates the link 10 forward.

Further, as shown in fig. 3, the cross member includes a seat bar 16 and a link 17, an end of the seat bar 16 is rotatably connected to one end of the link 17, the other end of the link 17 is rotatably connected to the front bracket 4, and a middle section of the seat bar 16 is rotatably connected to the rear bracket 7.

Further, the link 10 is sleeved on the rear section of the seat post 16.

Further, the connecting wire is connected to the operating assembly through the seat post 16, the connecting piece 17 and the front bracket 4.

Specifically, as shown in fig. 3, the linkage 10 further includes a guide groove 102, and the guide groove 102 is an inclined arc groove.

The linkage 10 is sleeved on the seat rod 16, a limit post (not shown) extends out of the seat rod 16, and the limit post is inserted into the guide groove 102. When the linkage 10 rotates, the guide groove 102 also rotates together, the position of the limit post in the guide groove 102 changes continuously, and when the limit post touches the edge of the guide groove 102, the linkage 10 stops rotating. The stopper posts and the guide grooves 102 serve to limit the forward and reverse strokes of the link 10.

Further, as shown in fig. 4, the seat post 16 is provided with a limit groove 161, the limit groove 161 is a straight groove along the axial direction, and a limit post extends from the seat post 16 through the limit groove 161 and the guide groove 102 of the linkage 10 for limiting the forward and reverse travel limit positions of the linkage 10.

In this embodiment, the webbing is pulled by the user, and the webbing is a flexible belt, and may be a cloth belt, or a non-woven fabric belt, or a plastic belt.

Alternatively, a rigid structure may be used to rotate the linkage 10.

Alternatively, the linkage 10 is not limited to rotation, and the webbing or other rigid structure may also move the linkage 10 linearly, such as along the seat post 16.

Further, the operation assembly further comprises a return torsion spring, and the return spring is connected with the linkage member 10;

when the linkage 10 rotates forward, the return torsion spring is twisted;

when the webbing is released, the return torsion spring drives the linkage 10 to rotate reversely.

Specifically, a return spring is mounted inside the linkage 10, the return spring being mounted between the linkage 10 and the seat post 16.

Further, as shown in fig. 5, the frame locking assembly includes a first pivot member 1, a second pivot member 2, a rotation shaft 9, and a locking plate 3 (see fig. 8), wherein the first pivot member 1 and the second pivot member 2 are connected by the rotation shaft 9 and can rotate around the rotation shaft 9, and the locking plate 3 is slidingly unlocked in the first pivot member 1;

the first pivot piece 1 is connected with the upper end part of the front bracket 4, and the second pivot piece 2 is connected with the lower end part of the push rod 5.

Specifically, as shown in fig. 6-9, a chute 11 is provided in the first pivot member 1, a slot 21 is provided in the second pivot member 2, and the locking plate 3 moves back and forth along the chute 11;

the linkage piece 10 is connected with the locking plate 3 through a connecting wire;

when the linkage piece 10 is reversed, the connecting wire drives the locking piece 3 to be inserted into the slot 21, and the locking piece 3 locks the first pivoting piece 1 and the second pivoting piece 2;

when the linkage member 10 rotates forward, the connecting wire drives the locking plate 3 to withdraw from the slot 21, and the first pivoting member 1 and the second pivoting member 2 are unlocked and can rotate relatively.

As shown in fig. 8, the first pivot member 1 is omitted in fig. 8, and it can be seen that the locking plate 3 is inserted into the slot 21 of the second pivot member 2, and at this time, the first pivot member 1 and the second pivot member 2 cannot rotate relatively, so as to maintain the state of fig. 1.

When the relative rotation between the first pivot element 1 and the second pivot element 2 is required, the locking plate 3 is retracted towards the left side in fig. 4, the locking plate 3 is withdrawn from the slot 21 and fully retracted into the first pivot element 1 along the chute 11 of the first pivot element 1. At this time, the first pivot member 1 and the second pivot member 2 are connected only through the rotation shaft 9, and the first pivot member 1 and the second pivot member 2 can rotate around the rotation shaft 9.

Further, as shown in fig. 6 to 7, the first pivot member 1 is provided with a first shaft groove 12 on the inner side, and the second pivot member 2 is provided with a second shaft groove 22 on the inner side, and the rotation shaft 9 is inserted into the first shaft groove 12 and the second shaft groove 22.

Further, as shown in fig. 6, the first pivot member 1 includes a first pipe body 13 and a first arc-shaped piece 14, the first arc-shaped piece 14 extends from the first pipe body 13, and the chute 11 is formed inside the first arc-shaped piece 14;

the first pipe body 13 is a hollow pipe body, the first arc-shaped piece 14 extends from one end of the first pipe body 13, and the first pipe body 13 and the first arc-shaped piece 14 are located on the same line. The thickness of the first arc-shaped piece 14 is approximately half of that of the first pipe body 13, and the first arc-shaped piece 14 is formed by cutting half of a section of the first pipe body 13.

As shown in fig. 7, the second pivot member 2 includes a second pipe body 23 and a second arc-shaped piece 24, the second arc-shaped piece 24 extends from the second pipe body 23, and the slot 21 is formed in the second pipe body 23;

the second pipe body 23 is also a hollow pipe body, the second arc-shaped piece 24 extends from one end of the second pipe body 23, and the second pipe body 23 and the second arc-shaped piece 24 are located on the same line. The thickness of the second arc piece 24 is approximately half of that of the second pipe body 23, and the second arc piece 24 is formed by cutting half of a section of the second pipe body 23.

As shown in fig. 5, the first arc-shaped piece 14 is butted with the second arc-shaped piece 24 and is spliced into a complete tubular column body, and the rotating shaft 9 is connected with the first arc-shaped piece 14 and the second arc-shaped piece 24.

After the first arc-shaped piece 14 and the second arc-shaped piece 24 are spliced, the first pivoting piece 1 and the second pivoting piece 2 form a complete tubular rotary joint, and almost no gap exists between the first pivoting piece 1 and the second pivoting piece 2, so that the internal structure of the first pivoting piece 1 and the second pivoting piece 2 is blocked, and the novel rotary joint has good aesthetic property.

Further, as shown in fig. 7 and 9, an arc-shaped limiting groove 241 distributed around the rotation center is provided on the inner side of the second arc-shaped piece 24, and a notch 242 is provided on the arc-shaped limiting groove 241;

a limiting column 31 extends from the locking plate 3 towards the arc limiting groove 241;

when the locking plate 3 is inserted into the slot 21, the limiting column 31 is positioned outside the arc limiting groove 241;

when the locking piece 3 is withdrawn from the slot 21, the limiting post 31 enters the arc-shaped limiting groove 241 through the notch 242.

Wherein, the arc-shaped limiting grooves 241 are equidistantly distributed around the second axial groove 22, one end of the arc-shaped limiting groove 241 is closed, the other end is provided with a notch 242, and the notch 242 is close to the position of the slot 21.

When the locking tab 3 is inserted into the slot 21, the stopper post 31 is located on the right side of the arc-shaped stopper groove 241 in fig. 3.

When the locking piece 3 is pulled to the left, the locking piece 3 is withdrawn from the slot 21, and the limit post 31 is just inserted into the arc-shaped limit groove 241 through the notch 242. At this time, the first pivot member 1 rotates in the counterclockwise direction of fig. 3, and the limiting post 31 rotates in the counterclockwise direction in the arc-shaped limiting groove 241 together until the first pivot member contacts the closed end of the arc-shaped limiting groove 241.

When the first pivot member 1 rotates clockwise in fig. 8 to be in the same line with the second pivot member 2, the locking plate 3 is reinserted into the slot 21, the limiting post 31 is removed from the notch 242, and the limiting post 31 is removed from the arc-shaped limiting groove 241.

Further, as shown in fig. 6-7, the front ends of the first arc-shaped sheet 14 and the second arc-shaped sheet 24 are convex arc edges, concave arc edges are arranged on the first pipe body 13 and the second pipe body 23, the convex arc edges of the first arc-shaped sheet 14 are in butt joint with the concave arc edges of the second pipe body 23, and the convex arc edges of the second arc-shaped sheet 24 are in butt joint with the concave arc edges of the first pipe body 23.

After the convex arc edge and the concave arc edge are in butt joint, the inner structures of the first arc-shaped sheet 14 and the second arc-shaped sheet 24 can be shielded, and meanwhile, relative rotation is not influenced. Further, as shown in fig. 1-2 and 6, the stroller further includes a dinner plate 6, the first pivot member 1 includes a first tube 13, a first arc-shaped piece 14, and a first connecting member 15, one end of the first tube 13 is connected to the front bracket 4, the other end of the first tube 13 is connected to the first arc-shaped piece 14, and the first connecting member 15 extends from the first tube 13 and is used for connecting the dinner plate 6.

Wherein, two first pivot parts 1 are respectively arranged on two upper ends of the front bracket 4, and the first pivot parts 1 extend out of the first connecting parts 15 for connecting two ends of the dinner plate 6.

As shown in fig. 8, the frame further includes two support tubes 8, wherein the rear support 7, the support tubes 8 and the second pivoting members 2 are respectively provided at two lower ends of the push rod 5, the second connecting members 25 of the two pivoting members 2 are respectively connected with the two support tubes 8, the two support tubes 8 are respectively connected with the two rear support 7, and the support tubes 8 are used for supporting the push rod 5 in the use state of fig. 8.

In this embodiment, there are two linkages 10 mounted on the left and right sides of the seat post 16, respectively, and a webbing is attached to the two linkages 10, with the webbing facing the rear of the stroller.

When the baby stroller is retracted, a user pulls the webbing from the rear of the baby stroller, the webbing drives the linkage piece 10 to rotate towards the upper side of the fig. 1, the linkage piece 10 drives the connecting wire to pull towards the rear, the connecting wire pulls the locking piece 3, the locking piece 3 withdraws from the second pivoting piece 2, and unlocking of the first pivoting piece 1 and the second pivoting piece 2 is achieved. After unlocking, the push rod 5 rotates downwards under the action of gravity, the upper end of the supporting tube 8 also turns downwards, the push rod 5 is close to the rear bracket 7, the webbing is continuously lifted upwards, the seat rod 16 rotates relative to the rear bracket 7, the connecting piece 17 is driven to rotate, the front bracket 4 and the rear bracket 7 are further closed, and finally the baby stroller is completely retracted.

When a user releases the webbing, the linkage piece 10 reverses under the action of the return torsion spring and returns to the initial position, the linkage piece 10 drives the connecting wire to return, the connecting wire drives the locking plate 3 to stretch out, at the moment, the push rod 5 is reversely rotated, the rear support 7 is driven to overturn downwards, the end part of the push rod 5 and the end part of the front support 4 are positioned on the same straight line, and the locking between the first pivoting piece 1 and the second pivoting piece 2 is realized, so that the finished baby stroller is in a unfolded state.

Through this embodiment, can realize the switching of the expansion state of baby's shallow and the state of packing up, simple structure, easy operation.

Embodiment two:

referring to fig. 10-15, fig. 10-15 are schematic structural views of a stroller in accordance with a second embodiment.

As shown in fig. 10-11, the stroller comprises a first pivot member 1', a second pivot member 2', a pivot shaft (not shown) and a locking tab 3';

the first pivoting piece 1 'and the second pivoting piece 2' are connected through a rotating shaft and can rotate around the rotating shaft, a sliding rail 11 'is arranged in the first pivoting piece 1', a boss 21 'is arranged in the second pivoting piece 2', and a locking plate 3 'moves back and forth in the sliding rail 11';

a slot for inserting the locking piece 3' is formed between the boss 21' and the first pivot piece 1',

when the locking plate 3 'is clamped on the boss 21', the locking plate 3 'is inserted into the slot, and the first pivoting piece 1' and the second pivoting piece 2 'are locked by the locking plate 3';

when the locking plate 3 'withdraws from the boss 21', the first pivot piece 1 'and the second pivot piece 2' are unlocked to rotate relatively.

As shown in fig. 10, the locking piece 3 'is blocked in fig. 10, and the locking piece 3' is inserted into the sliding rail 11 'and slides back and forth along the length direction of the sliding rail 11'.

As shown in fig. 11, in this embodiment, the boss 21 'is located at the back of fig. 11 and protrudes toward the locking piece 3'.

When the locking piece 3 'slides to the left in fig. 11, the locking piece 3 abuts against the upper side of the boss 21', so that the first pivot piece 1 'and the second pivot piece 2' cannot rotate relatively.

When the locking piece 3' slides toward the right in fig. 11, the locking piece 3' withdraws from the boss 21 '. At this time, the first pivot member 1 'is connected to the second pivot member 2' only through a rotation shaft, and the first pivot member 1 'rotates around the rotation shaft relative to the second pivot member 2'.

Further, as shown in fig. 10 to 11, the first pivot member 1 'is provided with a first shaft hole 12' on the inner side thereof, and the second pivot member 2 'is provided with a second shaft hole 22' on the inner side thereof, and the rotation shaft is inserted into the first shaft hole 12 'and the second shaft hole 22'.

Further, as shown in fig. 11-13, the first pivot joint 1' further includes a first pipe body 13' and a first arc-shaped housing 14', one end of the first pipe body 13' is connected to the first arc-shaped housing 14', and the other end of the first pipe body 13' is connected to the slide rail 11';

the second pivoting member 2' comprises a second pipe body 23' and a second arc-shaped piece 24', the second arc-shaped piece 24' extends from the second pipe body 23', and the boss 21' extends from the edge of the second arc-shaped piece 24 ';

the second arc piece 24' is inserted into the first arc housing 14', and the rotation shaft 9' connects the first arc housing 14' with the second arc piece 24'.

Specifically, as shown in fig. 12, the first arc-shaped housing 14' of the first pivot member 1' is formed by two substantially semicircular plates, and the center of the first arc-shaped housing 14' is a cavity for inserting the second arc-shaped piece 24' and the locking piece 3'.

As shown in fig. 13, the second arc piece 24' is a sheet-like plate member, and is inserted into the cavity of the first arc housing 14' to be engaged with the locking piece 3'.

Further, as shown in fig. 11-12, the front end of the first arc-shaped housing 14 'is a convex arc edge 141', and the second pipe body 23 'is provided with a concave arc edge 231', and the convex arc edge 141 'of the first arc-shaped housing 14' is butted with the concave arc edge 231 'of the second pipe body 23'.

Wherein, the front end of the first arc-shaped shell 14 'is provided with two convex arc edges 141', and the second tube body 23 'is also provided with two concave arc plates 231'. When the second arc piece 24 'is inserted into the first arc housing 14', the convex arc edge 141 'is abutted with the concave arc plate 231'. As shown in fig. 10, the structure capable of shielding the inside after the butt joint has a certain aesthetic property.

Further, as shown in fig. 11 and 14, the second pivot member 2 'further includes an insert 26', the insert 26 'includes an insertion portion 261', an insertion portion 262 'and a protrusion 263', the insertion portion 261 'is inserted into the second pipe body 23', the insertion portion 262 'is inserted into the second arc-shaped piece 24', and the protrusion 263 'is attached to the boss 21'.

Specifically, the second arc-shaped piece 24 'is further provided with an embedded groove 241', the embedded portion 262 'is embedded in the embedded groove 241', and the upper surface of the embedded portion 262 'is flush with the upper surface of the second arc-shaped piece 24'. The projections 263 'have the same shape as the bosses 21' and are arranged to overlap.

Preferably, the insert 26 'is made of metal, and the second tube 23', the second arcuate piece 24 'and the boss 21' are integrally formed of plastic. The protrusion 263 'serves to enhance the structural strength of the boss 21, prevent the boss 21' from being damaged by the locking piece 3', and the protrusion 263' and the boss 21 'together function to lock the locking piece 3'.

Alternatively, no insert may be provided, and the boss 21' may be made of metal or other structurally strong plastic.

According to the embodiment, the locking and unlocking between the first pivoting piece and the second pivoting piece are realized through the locking piece, the structure is simple, the operation is easy, and a user can realize the switching of the two states by only pulling the locking piece. As shown in fig. 15, the stroller includes a front frame 4 'and a push rod 5', a first pivot member 1 'is connected to an upper end portion of the front frame 4', and a second pivot member 2 'is connected to a lower end portion of the push rod 5'.

Specifically, the first pipe body 13 'of the first pivot joint 1' is sleeved outside the upper end of the front bracket 4', and the second pipe body 23' of the second pivot joint 2 'is sleeved outside the lower end of the push rod 5'.

The switching between the unfolded and the folded state of the whole baby stroller can be realized through the locking plate 3'. When the locking plate 3 'is clamped into the boss 21', the baby stroller is inserted into the slot and is in a unfolded or use state. When the locking tab 3' is withdrawn from the boss 21', the second pivot 2' is rotated clockwise downwards and the push rod 5' is also rotated clockwise downwards until it is in the position close to the front frame 4', the stroller being in the collapsed or folded condition of fig. 15.

Further, as shown in fig. 15, the first pivotal member 1 'includes a first pipe body 13', a first arc-shaped housing 14', and a first connection member 15', the slide rail 11 'is inserted into the front bracket 4', one end of the first pipe body 13 'is connected to the front bracket 4', the other end of the first pipe body 13 'is connected to the first arc-shaped housing 14', and the first connection member 15 'extends from the first pipe body 13' and is used for connecting a dinner plate or a bar located in front of the seat.

Wherein, the first pivot piece 1 'has two, installs respectively on the two upper ends of front bracket 4', and first pivot piece 1 'stretches out first connecting piece 15' for the both ends of joint dinner plate or pin.

Further, as shown in fig. 15, the stroller further includes a rear bracket 6 'and a support pipe 7', and an upper end portion of the rear bracket 6 'is pivotally connected to the front bracket 4';

the second pivot member 2 'includes a second pipe body 23', a second arc-shaped piece 24', and a second connecting member 25', one end of the second pipe body 23 'is connected with the push rod 5', the other end of the second pipe body 23 'is connected with the second arc-shaped piece 24', the second connecting member 25 'extends from the second pipe body 23', one end of the support pipe 7 'is pivotally connected with the second connecting member 25', and the other end of the support pipe 7 'is pivotally connected with the rear bracket 6'.

Wherein, the two rear brackets 6', the supporting tubes 7' and the second pivoting pieces 2' are respectively arranged at the two lower ends of the push rod 5', the second connecting pieces 25' of the two pivoting pieces 2' are respectively connected with the two supporting tubes 7', and the two supporting tubes 7' are respectively connected with the two rear brackets 6 '.

In the use state, the support tube 7 'is used for supporting the push rod 5'. In the collapsed or folded state of fig. 15, the push rod 5 'is rotated downward, and the upper end of the support tube 7' is also flipped downward, so that the push rod 5 'approaches the rear bracket 6', and the rear bracket 6 'is flipped toward the direction approaching the front bracket 4', and finally the stroller is completely retracted.

Through this embodiment, can realize the switching of the expansion state of baby's shallow and the state of packing up, simple structure, easy operation.

What has been described above is merely illustrative of the principles and preferred embodiments of the present invention. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the invention and should also be considered as the scope of protection of the present invention.

Claims (7)

1. A stroller, characterized in that: the vehicle frame comprises a vehicle frame and a vehicle frame locking assembly, wherein the vehicle frame is in an unfolding state and a folding state, and the vehicle frame locking assembly locks the vehicle frame in the unfolding state;

the frame includes laterally spaced left and right brackets, and a cross member positioned between the left and right brackets;

the left bracket and the right bracket comprise a front bracket, a rear bracket and a push rod, the upper end of the front bracket and the upper end of the rear bracket are rotationally connected with two of the lower ends of the push rod, and the other one is rotationally connected with at least one of the two;

the cross member is provided with an operating assembly;

when the operation assembly is pulled upwards, the frame locking assembly can be driven to unlock, the operation assembly is pulled upwards continuously, and the front support, the rear support and the push rod are closed and folded under the rotation of the transverse member or the rear support and the action of gravity; the operation assembly comprises a linkage piece which is rotatably arranged on the transverse member, and the linkage piece is connected with the frame locking assembly through a connecting wire;

the transverse member further comprises a seat rod and a connecting sheet, wherein the end part of the seat rod is rotatably connected with one end of the connecting sheet, the other end of the connecting sheet is rotatably connected with the front bracket, and the middle section of the seat rod is rotatably connected with the rear bracket;

the linkage piece further comprises a guide groove, the guide groove is an inclined arc groove, the linkage piece is sleeved on the seat rod, and a limit column extends out of the seat rod;

the seat rod is provided with a limiting groove, the limiting groove is a straight groove along the axis direction, and the limiting column extends out of the seat rod to penetrate through the limiting groove and the guide groove of the linkage.

2. The stroller of claim 1, wherein: the operation assembly further comprises a pulling piece, wherein the pulling piece is connected with the linkage piece and extends upwards, and when the pulling piece is pulled upwards, the linkage piece can be driven to unlock the frame locking assembly.

3. The stroller of claim 2, wherein: the pulling piece is a braid, the braid is connected with the linkage piece, and when the braid is pulled, the braid drives the linkage piece to rotate positively.

4. A stroller according to claim 3, wherein: the operation assembly further comprises a return torsion spring, and the return torsion spring is connected with the linkage piece;

when the linkage member rotates positively, the return torsion spring is twisted;

when the webbing is released, the return torsion spring drives the linkage piece to rotate reversely.

5. The stroller of claim 1, wherein: the linkage piece is sleeved at the rear section of the seat rod.

6. The stroller of claim 1, wherein: the connecting wire passes through the seat post, the connecting piece and the front bracket to be connected with the operation component.

7. The stroller of any one of claims 1-6, wherein: the frame locking assembly comprises a first pivoting piece, a second pivoting piece, a rotating shaft and a locking plate, wherein the first pivoting piece and the second pivoting piece are connected through the rotating shaft and can rotate around the rotating shaft, and the locking plate slides in the first pivoting piece to be unlocked;

the first pivoting piece is connected with the upper end part of the front bracket, and the second pivoting piece is connected with the lower end part of the push rod.