CN112678062B

CN112678062B - Children's barrow

Info

Publication number: CN112678062B
Application number: CN202011464998.2A
Authority: CN
Inventors: 贺新军; 高翔
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2022-05-03
Anticipated expiration: 2040-12-14
Also published as: CN114789747A; CN112678062A; CN114789747B

Abstract

The invention discloses a children cart, which comprises a push handle rod, a lower bracket, an upper bracket and a central shaft, wherein the lower end part of the push handle rod is rotatably connected with an upper connecting piece through a first shaft, the upper bracket is rotatably connected with the lower bracket through the central shaft, the lower bracket comprises a front wheel bracket, a rear wheel bracket and a lower connecting piece, the upper end part of the front wheel bracket is rotatably connected with the upper end part of the rear wheel bracket, the front wheel bracket and the rear wheel bracket form a rotating connecting part at the periphery of a rotating shaft, the outermost side of the front wheel bracket is provided with a shielding cover for shielding the rotating connecting part, the shielding cover rotates 360 degrees by taking the axial lead of the first shaft as the circle center and has a circular shielding cover projection on a first virtual plane of a vertical plane, the central shaft has a central shaft projection on the first virtual plane, and at least part of the central shaft projection is overlapped with the shielding cover projection; the stroller provided by the invention has the advantages that the size is smaller, the appearance is more attractive, and the whole stroller body is stable and balanced in pushing or rotating of the stroller.

Description

Children's barrow

Technical Field

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

Background

The child stroller in the prior art has a forward pushing state in which a child pushes a traveler backwards and a backward pushing state in which a child pushes the traveler backwards, and the upper frame can rotate around a vertical shaft relative to the lower frame so as to be switched between the forward pushing state and the backward pushing state. In the prior art, when the stroller is observed from the side surface of the stroller, the upper frame is obviously higher than the lower frame, and the whole stroller has larger volume; there are also some stroller, which can be switched between forward and backward pushing states by moving the stroller out of the stroller.

Disclosure of Invention

The object of the present invention is to address the deficiencies of the prior art by providing an improved stroller.

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

the utility model provides a children's shallow, has expansion state and fold condition, children's shallow is including pushing away handlebar pole, upper bracket, lower carriage, wheel subassembly, under expansion state:

the upper bracket comprises an upper connecting piece and a seat arranged on the upper connecting piece;

the lower end part of the push handle rod is rotatably connected with the upper connecting piece through a first shaft, and the axis of the first shaft extends along the left and right directions of the baby stroller;

the lower support comprises front wheel supports positioned on the left side and the right side, rear wheel supports positioned on the left side and the right side, and a lower connecting piece for connecting the front wheel supports and/or the rear wheel supports on the left side and the right side, wheel assemblies are arranged on the lower parts of the front wheel supports and the rear wheel supports, the upper end part of each front wheel support is rotatably connected with the upper end part of the rear wheel support through a second shaft, and the shaft axis of the second shaft is parallel to or coincident with the shaft axis of the first shaft;

the upper end part of the front wheel bracket and the upper end part of the rear wheel bracket form a rotary connecting part at the periphery of the second shaft, the outermost side of the rotary connecting part in the left-right direction is provided with a shielding cover, and the shielding cover at least partially covers the rotary connecting part in the left-right outer side direction;

the upper connecting piece is rotatably connected with the lower connecting piece through a central shaft, and the axis of the central shaft extends along the height direction of the baby stroller;

the axis of the central shaft is positioned in a first virtual plane vertical to the horizontal plane, the axis of the first shaft is vertical to the first virtual plane, the shielding cover rotates 360 degrees around the axis of the first shaft as the center of a circle and has a circular forward shielding cover projection on the first virtual plane, the central shaft also has a forward central shaft projection on the first virtual plane, and at least part of the central shaft projection is overlapped with the shielding cover projection.

In some embodiments, a locking device is arranged between at least two of the push handle rod, the upper bracket and the lower bracket, and when the locking device is in a locking state, the seat has a reverse pushing state facing the push handle rod and a forward pushing state facing away from the push handle rod; when the locking device is in an unlocking state, the upper connecting piece drives the seat to rotate relative to the lower support by taking the central shaft as a rotating shaft, the push handle rod rotates relative to the upper connecting piece around the first shaft 6, so that the upper part of the push handle rod swings relative to the upper connecting piece in the front-back direction, and the seat is switched between a reverse pushing state facing the push handle rod and a forward pushing state facing away from the push handle rod.

In some embodiments, the axis of the first shaft intersects the solid of the central shaft.

In some embodiments, the axis of the first shaft perpendicularly intersects the axis of the central shaft.

In some embodiments, the lower end of the push handle rod is an integrally arranged shielding cover, and the shielding cover is in a disc shape with the axis of the first shaft as the center of a circle.

In some embodiments, the axis of the second shaft lies in a second virtual plane perpendicular to the horizontal plane with the axis of the first shaft.

In some embodiments, the axis of the first shaft is above the axis of the second shaft.

In some embodiments, the axis of the central shaft lies in the second virtual plane.

In some embodiments, a horizontal plane in which the axis of the second shaft lies intersects the solid of the central shaft.

In some embodiments, the axis of the second shaft perpendicularly intersects the axis of the central shaft.

In some embodiments, the axis of the first shaft passes through the cover.

In some embodiments, the axis of the second shaft passes through the cover.

In some embodiments, the shielding cover is any one of a disc, an ellipse, a quadrangle and a triangle which are centered on the axis of the first shaft.

The invention also provides another stroller, which has an unfolded state and a folded state, and comprises a push handle rod, an upper support, a lower support and a wheel assembly, wherein in the unfolded state:

the lower bracket comprises front wheel brackets positioned on the left side and the right side, rear wheel brackets positioned on the left side and the right side, and lower connecting pieces used for connecting the front wheel brackets and/or the rear wheel brackets on the left side and the right side, wheel assemblies are arranged on the lower parts of the front wheel brackets and the rear wheel brackets, the upper end part of each front wheel bracket on each side is rotatably connected with the lower connecting pieces through a front shaft, the upper end part of each rear wheel bracket on each side is rotatably connected with the lower connecting pieces through a rear shaft, and the shaft axis of the front shaft and the shaft axis of the rear shaft are respectively parallel to the shaft axis of the first shaft;

the upper end part of the front wheel bracket and the upper end part of the rear wheel bracket are respectively rotatably connected with the periphery of the lower connecting piece to form a rotating connecting part, the outermost side of the rotating connecting part in the left-right direction is provided with a shielding cover, and the shielding cover at least partially covers the rotating connecting part in the left-right outer direction;

the axis of the central shaft is located in a first virtual plane perpendicular to the horizontal plane, the axis of the first shaft is perpendicular to the first virtual plane, the shielding cover rotates 360 degrees with the axis of the first shaft as a circle center and has a circular forward shielding cover projection on the first virtual plane, the central shaft also has a forward central shaft projection on the first virtual plane, and the central shaft projection is at least partially overlapped with the shielding cover projection.

In some embodiments, the axis of the first shaft intersects the axis of the central shaft perpendicularly.

In some embodiments, the lower end of the push handle rod is an integrally disposed shielding cover, and the shielding cover is any one of a disc, an ellipse, a quadrangle and a triangle which take the axial lead of the first shaft as the center.

In some embodiments, the axis of the first shaft passes through the cover.

In some embodiments, the axis of the front shaft and the axis of the rear shaft respectively pass through the shielding cover.

Due to the application of the technical scheme, the whole volume of the baby stroller provided by the invention is obviously reduced, the gravity center of the upper bracket is reduced, and the whole stroller body is stable and balanced in pushing or rotating of the baby stroller.

Drawings

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

Fig. 1 is a schematic perspective view of a stroller in a forward-pushing state according to a first embodiment of the present invention;

fig. 2 is a partially cut-away perspective view of a stroller according to a first embodiment of the present invention in a forward-pushing state;

fig. 3 is a partially exploded perspective view of the stroller in a forward-pushing state according to the first embodiment of the present invention;

fig. 4A is a schematic side view of the stroller in the forward-pushing state with the leg rest attached thereto according to the first embodiment of the present invention;

FIG. 4B is a schematic sectional view taken along line A-A in FIG. 4A;

FIG. 4C is a schematic sectional view taken along line B-B in FIG. 4A;

fig. 5A is a schematic side view, partially perspective, structural view of a stroller in accordance with a first embodiment of the present invention, with a leg rest attached thereto, in a forward-pushing state;

FIG. 5B is a schematic sectional view taken along line B-B in FIG. 5A;

fig. 6 is a perspective view of the stroller with its upper connection member hidden in a forward-pushing state according to the first embodiment of the present invention;

fig. 7 is a side view of the stroller of the first embodiment of the present invention with the upper connector hidden from view in a forward pushing position;

fig. 8 is a schematic view of a cross-sectional projection structure of a part of the stroller in a forward-pushing state, where the upper connecting member is hidden, along the axis of the central shaft in a vertical plane perpendicular to the horizontal plane;

fig. 9A is a schematic perspective view of the stroller of the present invention in a forward pushing state;

FIG. 9B is a schematic view of the handle bar of the stroller swinging from the forward pushing position to the upright position;

FIG. 9C is a schematic view of the stroller of the present invention being rotated from a forward pushing position to a reverse pushing position;

FIG. 9D is a schematic view of the handle bar of the stroller swinging from the upright position to the reverse position;

FIG. 9E is a schematic structural view of the stroller of the present invention in a reverse-pushing state;

fig. 10 is a schematic perspective view of a stroller according to a second embodiment of the present invention in a forward-pushing state;

fig. 11A is a side view partially perspective structural schematic view of a stroller in a forward-pushing state according to a second embodiment of the present invention;

FIG. 11B is a schematic sectional view taken along line A-A in FIG. 11A;

fig. 12A is a schematic side view, partially perspective structure of a stroller according to a third embodiment of the present invention in a forward pushing state;

FIG. 12B is a schematic sectional view taken along line B-B in FIG. 12A;

fig. 13 is a side view partially perspective structural view of a visible central axis of the stroller in a forward-pushing state according to a third embodiment of the present invention;

fig. 14 is a side view partially perspective structural view of a stroller in a forward-pushing state according to a fourth embodiment of the present invention;

fig. 15 is a side view partially perspective structural view of a stroller in a forward-pushing state according to a fifth embodiment of the present invention;

fig. 16A is a side view partially perspective structural view of a stroller in a forward-pushing state according to a sixth embodiment of the present invention;

FIG. 16B is a schematic sectional view taken along line B-B in FIG. 16A;

fig. 17 is a schematic perspective view of the stroller shown in fig. 9A in a folded state in a forward pushing state;

fig. 1 to 16B are all structural views of the present invention in the unfolded state.

Wherein: 1-upper support; 11-a push handle rod; 12-a shielding cover; 120-forward occlusion cover projection; 13-an upper connection; 130-armrest portion; 131-a backrest part; 2-lower support; 21-front wheel support; 22-rear wheel support; 23-lower connection; 24-a sleeve; 25-a rotation connection; 3-central axis; 31-central axis projection; 4-a wheel assembly; 5-a seat; 51-leg rest; 6-a first shaft; 6000-horizontal plane; 6001-the axis of the first shaft; 6002-axial center of second shaft; 6003-axial line of the central shaft; 6004-first virtual plane; 6005-second virtual plane; 7-a second axis; 71-front axle; 72-rear axle; 73-sliding sleeve shaft; 74-sliding sleeve.

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention may be more readily understood by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "left-right", "height", "front-back" and the like indicate the orientation or positional relationship shown when an adult of a stroller holds a handlebar based on fig. 1, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, only a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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

Example one

As shown in fig. 1-8, the present embodiment provides a stroller having an unfolded state and a folded state (as shown in fig. 17), the stroller includes a push rod 11, a lower frame 2, an upper frame 1, a central shaft 3 and a wheel assembly 4, the push rod 11 is rotatably connected to the upper frame 1 through a first shaft 6, and the upper frame 1 is rotatably connected to the lower frame 2 through the central shaft 3. Wherein, in the deployed state:

specifically, the upper frame 1 includes an upper connecting member 13 and a seat 5 disposed on the upper connecting member 13, and the above-mentioned push handle bar 11 is rotatably connected to the upper connecting member 13 in the upper frame 1 through a first shaft 6, and the upper connecting member 13 is rotatably connected to a lower connecting member 23 in the lower frame 2 through a central shaft 3. In general, a stroller has a member for directly supporting a child, such as a sitting bag, a sleeping bag, or a cradle, which is collectively referred to as a seat 5 in the present embodiment, and the orientation of the child when the child is seated in the seat 5 is referred to as the orientation of the seat 5. The seat 5 is directly or indirectly connected to the upper connecting member 13 or the upper connecting member 13 is part of the seat 5, the seat 5 being rotatable as a unit with the upper connecting member 13 about the central axis 3. In the present embodiment, the seat 5 further includes armrest portions 130, a backrest portion 131, and leg rests 51.

The push handle rods 11 arranged on the left side and the right side can be telescopic or foldable, the holding position can also be arranged commonly used in the field, and the invention is not limited. Specifically, in this embodiment, the push handle rod 11 includes an upper push rod and a lower push rod telescopically sleeved together, and the upper ends of the push handle rods 11 at both sides are connected through the armrest. The lower end parts of the push handle rods 11 at the two sides are respectively connected with the upper connecting piece 13 through the first shaft 6 in a rotating way, and the shaft axis 6001 of the first shaft extends along the left and right directions of the baby stroller; the shielding covers 12 are disposed on the left and right sides of the stroller, the shielding covers 12 in this embodiment are integrally disposed with the lower end portion of the handle bar 11, the shielding covers 12 may have any shape, for example, the shielding covers 12 may have any shape of a disc, an ellipse, a quadrangle, or a triangle, which are centered on the axis 6001 of the first axis, and the shielding covers 12 in this embodiment have a disc or a disk-like body centered (centered on the center of the circle) on the axis 6001 of the first axis. The push handle bar 11 in this embodiment is rotatable relative to the upper link 13.

The lower bracket 2 comprises front wheel brackets 21 symmetrically arranged at the left side and the right side, rear wheel brackets 22 arranged at the left side and the right side, and lower connecting pieces 23 used for connecting the front wheel brackets 21 and/or the rear wheel brackets 22 at the left side and the right side, wherein the lower connecting pieces 23 extend along the left-right direction of the baby stroller, and the lower connecting pieces 23 and the front wheel brackets 21 and/or the rear wheel brackets 22 can be fixedly connected or integrally formed or can be rotatably connected; the lower part of the lower bracket 2 is provided with a wheel assembly 4, in the embodiment, the lower part of the front wheel bracket 21 and the lower part of the rear wheel bracket 22 are respectively provided with the wheel assembly 4, and the front wheel assembly in the embodiment is a steering wheel. The lower portions of the rear wheel brackets 22 on both sides are connected by a transverse link in the left-right direction. The upper end of each front wheel bracket 21 is rotatably connected with the upper end of the rear wheel bracket 22 through the second shaft 7, in this embodiment, at the connecting position of the front wheel bracket 21 and the rear wheel bracket 22, the front wheel bracket 21 is located at the outer side of the rear wheel bracket 22, the rear wheel bracket 22 is rotatably connected with the lower connecting piece 23 around the axial lead 6002 of the second shaft, and further, the rear wheel bracket 22 is rotatably connected with the lower connecting piece 23 through the second shaft 7. The second shaft axis 6002 extends in the left-right direction of the stroller, and the lower link 23 is provided between the rear wheel stays 22 on both sides.

The axis 6002 of the second shaft is parallel to or coincident with the axis 6001 of the first shaft, which makes the cart more stable and beautiful. In the present embodiment, as shown in fig. 1-2, the axis 6002 of the second shaft is parallel to the axis 6001 of the first shaft, the axis 6001 of the first shaft is located above the axis 6002 of the second shaft, the axis 6002 of the second shaft and the axis 6001 of the first shaft are located in a second virtual plane 6005 perpendicular to the horizontal plane, and the axis 6003 of the central shaft is also located in the second virtual plane 6005.

The upper end of each front wheel bracket 21 and the upper end of each rear wheel bracket 22 form a rotary connecting part 25 at the periphery of the second shaft 7, the shielding cover 12 is arranged at the outermost side of the rotary connecting part 25 in the left-right direction, the shielding cover 12 at least partially covers the rotary connecting part 25 in the left-right outer direction, and the shaft axis 6001 of the first shaft penetrates through the shielding cover 12. The shielding cover 12 may be provided separately from the lower end of the push handle bar 11 or may be integrally connected to other peripheral members such as the upper connecting member 13 or the lower connecting member 23.

The outer wall of the rotating connecting portion 25 is a cylindrical surface or a conical surface which takes the axial lead 6003 of the central shaft as the central shaft, that is, at the same height, the outer wall of the rotating connecting portion 25 is an arc, the center of the arc is on the axial lead 6003 of the central shaft, so that the upper support 1 of the stroller can smoothly rotate around the axial lead 6003 of the central shaft, and meanwhile, when the stroller is in a non-state conversion, the outer wall of the rotating connecting portion 25 abuts against or is attached to the upper support 1 or the push handle rod 11 at the corresponding position, so that the lower support 2 stably supports the upper support 1 in the transverse direction of the stroller, and the structural strength of the stroller in the transverse direction is enhanced.

The upper connecting member 13 is rotatably connected to the lower frame 2 via the central shaft 3, and further, the central shaft 3 is respectively connected to the upper connecting member 13 and the lower frame 2, the central shaft axis 6003 extends along the height direction of the stroller, and the central shaft axis 6003 is located in a plane perpendicular to the horizontal plane (i.e., a vertical plane). The upper bracket 1 is rotatably connected with the lower bracket 2 around the central shaft 3, so that the push handle rod 11 and the upper bracket 1 can rotate around the central shaft 3 relative to the lower bracket 2 in a horizontal plane as a whole. The upper bracket 1 can freely rotate 180 degrees around the central shaft 3 from a forward position to a reverse position; accordingly, the stroller has at least two use states, in the present embodiment, the two use states are a forward push state and a backward push state, respectively, when the stroller is in the forward push state as shown in fig. 9A, the seat 5 faces forward and faces away from the push bar 11, the backrest 131 of the seat 5 is inclined backward, the armrest 130 of the seat 5 faces forward, and the upper bracket 1 is located at the forward position; when the stroller is in the reverse-push state as shown in fig. 9E, the seat 5 faces rearward and faces the push handle bar 11, the backrest portion 131 of the seat 5 is inclined forward, the armrest portion 130 of the seat 5 faces rearward, and the upper bracket 1 is located at the reverse position; the front-rear direction of the stroller is referenced to the arrangement of the front and rear wheel assemblies.

The directions of the stroller such as left and right, height, front and back in the present invention refer to the left and right, height and front and back directions of the stroller when the stroller is in the forward pushing state (as shown in fig. 1 and 9A) or the backward pushing state (as shown in fig. 9E); the vertical, horizontal and other directions refer to the vertical, horizontal and other positions (as shown in fig. 1) when the stroller is placed on the horizontal ground in the forward-pushing state or the backward-pushing state, so as to describe the invention of the present invention.

As shown in fig. 1, a vertical plane perpendicular to the left-right direction of the stroller is a first virtual plane 6004, and the axis line 6001 of the first shaft is perpendicular to the first virtual plane 6004. For convenience of illustration, in this embodiment, the axis 6003 of the center shaft 3 is also located in the first virtual plane 6004; the shielding cover 12 rotates 360 degrees around the axis 6001 of the first axis as a circle center and has a circular forward shielding cover projection 120 on the first virtual plane 6004, as shown in fig. 8, the projection of the shielding cover 12 on the first virtual plane 6004 is the shielding cover projection 120, the projection of the central axis 3 on the first virtual plane 6004 is the central axis projection 31, and at least a part of the central axis projection 31 overlaps with the shielding cover projection 120; as shown in fig. 8, the central axis projection 31 partially overlaps the shield cover projection 120.

Because the central shaft projection 31 and the shielding cover projection 120 are partially overlapped, when the stroller is observed from the side surface of the stroller shown in fig. 7, at least part of the central shaft 3 is shielded by the shielding cover 12, so that the whole stroller is more beautiful, the gravity center of the upper bracket 1 is lowered due to the position of the shielding cover 12, the whole stroller body is stable and balanced during pushing or rotating of the stroller, and the folded height is reduced.

It is further preferred that the top end of the projection 31 of the central axis 3 on the first virtual plane 6004 is located within the blanking cover projection 120, further enhancing the aesthetics of the stroller.

The projections of the components referred to below are, unless otherwise specified, projections projected perpendicularly onto the first virtual plane 6004.

The axis 6001 of the first shaft intersects the shield projection 120, and in this embodiment, the axis 6001 of the first shaft passes through the shield 12. A horizontal plane 6000 in which the axis 6001 of the first axis lies intersects the solid of the central axis 3 such that the first axis is at a height close to the central axis 3. Further, the axis 6001 of the first shaft intersects the solid of the center shaft 3, and the first shaft and the center shaft 3 are positioned closer to each other in the front-rear direction of the stroller. In this embodiment, as shown in fig. 7, the axis 6001 of the first shaft is perpendicular to the axis 6003 of the central shaft, so that the frame of the stroller is more compact in overall structure and has a stable center of gravity.

The central shaft 3 is rotatably connected to at least one of the upper support 1 and the lower support 2, in this embodiment, the central shaft 3 is fixedly connected to or integrally formed with the upper support 1, and the central shaft 3 is rotatably connected to the lower support 2.

In this embodiment, the lower link 23 is located below the upper link 13, and the central shaft 3 is rotatably connected to the lower link 23. Specifically, the lower connecting member 23 is a cross bar with two ends connected to the left and right rear wheel brackets 22, as shown in fig. 2 and 6, a sleeve 24 extending in the vertical direction is provided in the middle of the lower connecting member 23, the lower portion of the central shaft 3 is rotatably inserted into the sleeve 24, and as shown in fig. 8, the projection of the sleeve 24 and the shielding cover projection 120 may partially or completely coincide with each other. The length of the sleeve 24 in the vertical direction is larger than the length of the other positions of the lower connecting piece 23 in the vertical direction, so that the central shaft 3 is stably supported, meanwhile, materials are saved, and the overall structure of the baby stroller is simpler.

The horizontal plane on which the axis 6002 of the second shaft is located intersects with the entity of the central shaft 3, or further, the axis 6002 of the second shaft intersects with the entity of the central shaft 3, in this embodiment, the axis 6002 of the second shaft intersects with the axis 6003 of the central shaft. The second shaft axis 6002 intersects the shield projection 120 or further, the second shaft axis 6002 passes through the shield 12 such that the second shaft 7 is at a similar height to the central shaft 3.

At least two locking devices are arranged between the push handle rod 11, the upper bracket 1 and the lower bracket 2, namely: a locking device is arranged between the push handle rod 11 and the upper bracket 1, and a locking device is arranged between the upper bracket 1 and the lower bracket 2. Or a locking device is arranged between the push handle rod 11 and the lower bracket 2, and a locking device is arranged between the upper bracket 1 and the lower bracket 2. And the like, and a locking device can be arranged among the push handle rod 11, the upper bracket 1 and the lower bracket 2. There are many types of locking devices, also known in the art, for locking or unlocking two parts together, which are not described in detail in this application; in the locked state of the locking device, the seat 5 can be in a reverse-pushing state facing the push handle bar 11 (as shown in fig. 9E) or a forward-pushing state facing away from the push handle bar 11 (as shown in fig. 9A); in the unlocked state of the locking device, as shown in fig. 9A to 9E, the upper link 13 rotates the seat 5 relative to the lower frame 2 about the central axis 3 as a rotation axis, and the push handle lever 11 rotates relative to the upper link 13 about the first axis 6, so that the upper portion of the push handle lever 11 swings in the forward and backward direction relative to the upper link 13, and the seat 5 is switched between a reverse-push state facing the push handle lever 11 and a forward-push state facing away from the push handle lever 11.

Specifically, as shown in fig. 9A, when the stroller is in the forward pushing state, the upper portion of the push rod 11 is inclined toward the rear of the stroller. After the locking device is unlocked, the upper portion of the push lever 11 can swing forward about the axis 6001 of the first shaft in the direction of the arrow in fig. 9A. Similarly, the handle bar 11 can be pivoted forward about the axis 6001 of the first shaft when the stroller is in the reverse-pushing position as shown in fig. 9E.

When the stroller is shifted from the forward pushing state to the backward pushing state, as shown in fig. 9A, the push handle lever 11 is first swung forward about the first shaft 6 as a rotation axis, and can be directly swung to a position inclined forward. For convenience of operation, the push handle bar 11 can be swung to the vertical position as shown in fig. 9B, and then the upper frame 1 can be rotated 180 ° in the horizontal plane in the direction of the arrow in fig. 9B-C with respect to the lower frame 2 about the central axis 3 as the rotation axis, to the position as shown in fig. 9D, in which the seat 5 faces backward. The upper portion of the push bar 11 is then swung rearwardly from the upright position of fig. 9D to the position of fig. 9E, whereupon the stroller enters the reverse-push position, completing the transition from the forward-push position to the reverse-push position. The conversion of the stroller from the backward pushing state to the forward pushing state is similar to the above situation, and the reverse operation is only needed. When the stroller is switched between the forward pushing state and the backward pushing state, the components of the push bar 11, the upper bracket 1 and the seat 5, and the child in the seat 5 do not interfere with the lower bracket 2. In the whole conversion process, the child in the stroller does not need to leave the stroller, and meanwhile, the push handle rod 11 is in a backward inclined state no matter the stroller is in a forward pushing state or a backward pushing state, so that the operation of a stroller is facilitated.

Or, the entire upper frame 1 and the push handle bar 11 of the stroller are rotated 180 ° with respect to the lower frame 2 about the central axis 3 as the rotation axis, and then the push handle bar 11 is swung in a direction away from the front wheel assembly about the first axis 6 as the rotation axis, so that the upper portion of the push handle bar 11 is inclined toward the rear of the stroller.

Example two

As shown in fig. 10 and fig. 11A-B, the present embodiment is different from the first embodiment in that the lower frame 2 includes front wheel frames 21 on the left and right sides, rear wheel frames 22 on the left and right sides, and a lower connecting member 23 for connecting the front wheel frames 21 and the rear wheel frames 22 on the left and right sides; the lower part of the lower bracket 2 is provided with a wheel assembly 4, in the embodiment, the lower parts of the front wheel bracket 21 and the rear wheel bracket 22 are provided with the wheel assembly 4, the upper end part of each side of the front wheel bracket 21 is rotatably connected with the upper end part of the rear wheel bracket 22 through a second shaft 7, the shaft axis 6002 of the second shaft is superposed with the shaft axis 6001 of the first shaft and passes through the center of the shielding cover 12, and the shaft axis 6003 of the third shaft is also vertically crossed with the shaft axis 6001 of the first shaft.

EXAMPLE III

As shown in fig. 12A, 12B and 13, the present embodiment is different from the first embodiment in that the lower frame 2 of the stroller in the present embodiment includes front wheel frames 21 located on the left and right sides, rear wheel frames 22 located on the left and right sides, and a lower connecting member 23 for connecting the front wheel frames 21 and the rear wheel frames 22 located on the left and right sides, the upper connecting member 13 is rotatably connected to the lower connecting member 23 through the central shaft 3, the wheel assemblies 4 are disposed on the lower portions of the front wheel frames 21 and the rear wheel frames 22, the upper end portion of each front wheel frame 21 and the upper end portion of each rear wheel frame 22 are respectively rotatably connected to the lower connecting member 23, and the axis of the rotatable connection is parallel to the axis 6001 of the first shaft. Specifically, the upper end of each front wheel bracket 21 is rotatably connected with the lower connecting piece 23 through a front shaft 71, the upper end of each rear wheel bracket 22 is rotatably connected with the lower connecting piece 23 through a rear shaft 72, the shaft axis of the front shaft 71 and the shaft axis of the rear shaft 72 are both parallel to the shaft axis 6001 of the first shaft, the shaft axis of the front shaft 71 and the shaft axis of the rear shaft 72 are located in the same horizontal plane, the front shaft 71 is located in front of the rear shaft 72, and the shaft axis 6001 of the first shaft is located above the horizontal plane where the shaft axis of the front shaft 71 and the shaft axis of the rear shaft 72 are located.

In this embodiment, the upper end of the front wheel bracket 21 and the upper end of the rear wheel bracket 22 are rotatably connected to the lower connecting member 23 to form a rotating connecting portion 25, the shielding cover 12 having an oval shape is disposed on the outermost side of the rotating connecting portion 25 in the left-right direction, and the shielding cover 12 at least partially covers the rotating connecting portion 25 in the left-right outer direction, and the shielding cover 12 in this embodiment is fixedly connected to or integrally formed with the lower end of the push handle 11.

The shaft axis 6001 of the first shaft passes through the center of the ellipse of the shielding cover 12, and the shaft axes of the rotating shafts rotatably connected to the lower link 23 at the upper end portions of the front wheel bracket 21 and the rear wheel bracket 22 respectively also pass through the shielding cover 12, that is, the shaft axes of the front shaft 71 and the rear shaft 72 also pass through the shielding cover 12.

Referring to fig. 12A, the elliptical shielding cover 12 rotates 360 degrees around the axis 6001 of the first axis and has a circular shielding cover projection 120 on the first virtual plane 6004, specifically a circle with the center of the ellipse and the major radius of the ellipse, and the central axis projection 31 at least partially overlaps the shielding cover projection 120.

Example four

As shown in fig. 14, the present embodiment is different from the first embodiment in that the shielding cover 12 has a triangular shape, and the axis 6001 of the first shaft and the axis 6002 of the second shaft are arranged in parallel and both pass through the shielding cover 12.

EXAMPLE five

As shown in fig. 15, the present embodiment is different from the third embodiment in that the shielding cover 12 has a square shape, and the shaft axis 6001 of the first shaft, the shaft axis of the front shaft 71, and the shaft axis of the rear shaft 72 are arranged in parallel to each other and pass through the shielding cover 12. The axis 6001 of the first shaft perpendicularly intersects the axis 6003 of the third shaft, and the axis 6001 of the first shaft passes through the center of the square of the shield cover 12.

EXAMPLE six

As shown in fig. 16A-16B, the present embodiment is different from the third embodiment in that the lower frame 2 of the stroller in the present embodiment includes front wheel frames 21 located on the left and right sides, rear wheel frames 22 located on the left and right sides, and a lower connecting member 23 for connecting the front wheel frames 21 and the rear wheel frames 22 on the left and right sides, the upper connecting member 13 is rotatably connected to the lower connecting member 23 through the central shaft 3, and the wheel assemblies 4 are disposed at the lower portions of the front wheel frames 21 and the rear wheel frames 22. The front wheel bracket 21 is provided with a sliding sleeve 74 which can slide along the front wheel bracket 21, the rear wheel bracket 22 is rotatably connected with the sliding sleeve 74 through a sliding sleeve shaft 73, and the axis of the sliding sleeve shaft 73 is parallel to the axis 6001 of the first shaft. The upper end of each front wheel bracket 21 is rotatably connected with the lower connecting piece 23 through a front shaft 71, the upper end of each rear wheel bracket 22 is rotatably connected with the lower connecting piece 23 through a rear shaft 72, and the axial line of the front shaft 71 and the axial line of the rear shaft 72 are respectively parallel to the axial line 6001 of the first shaft. The front shaft 71 is located behind the rear shaft 72, the axis 6001 of the first shaft, the axis of the front shaft 71 and the axis of the rear shaft 72 are located in the same horizontal plane, and the axis 6001 of the first shaft is located between the axis of the front shaft 71 and the axis of the rear shaft 72. The shielding cover 12 is circular, the axis 6001 of the first shaft passes through the center of the shielding cover 12, and the axis 6003 of the third shaft intersects with the axis 6001 of the first shaft and is located in the same vertical plane.

The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the close-fitting nature of the present invention are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a children's shallow, has expansion state and fold condition, children's shallow is including pushing away lever (11), upper bracket (1), lower carriage (2), wheel subassembly (4), its characterized in that, under expansion state:

the upper bracket (1) comprises an upper connecting piece (13) and a seat (5) arranged on the upper connecting piece (13);

the lower end part of the push handle rod (11) is rotatably connected with the upper connecting piece (13) through a first shaft (6), and the shaft axis (6001) of the first shaft extends along the left and right directions of the baby stroller;

the lower support (2) comprises front wheel supports (21) positioned on the left side and the right side, rear wheel supports (22) positioned on the left side and the right side, and lower connecting pieces (23) used for connecting the front wheel supports (21) and/or the rear wheel supports (22) on the left side and the right side, wheel assemblies (4) are arranged on the lower portions of the front wheel supports (21) and the rear wheel supports (22), the upper end portion of each front wheel support (21) is rotatably connected with the upper end portion of the rear wheel support (22) through a second shaft (7), and the shaft axis (6002) of the second shaft is parallel to or coincident with the shaft axis (6001) of the first shaft;

a rotary connecting part (25) is formed at the periphery of the second shaft (7) by the upper end part of the front wheel bracket (21) and the upper end part of the rear wheel bracket (22), a shielding cover (12) is arranged at the outermost side of the rotary connecting part (25) in the left-right direction, the shielding cover (12) at least partially covers the rotary connecting part (25) in the left-right outer side direction, and the shielding cover (12) is arranged at the lower end part of the push handle rod (11);

the upper connecting piece (13) is rotatably connected with the lower connecting piece (23) through a central shaft (3), and the axis (6003) of the central shaft (3) extends along the height direction of the baby stroller;

the axis (6003) of the central shaft is located in a first virtual plane (6004) perpendicular to a horizontal plane, the axis (6001) of the first shaft is perpendicular to the first virtual plane (6004), the shielding cover (12) rotates 360 degrees around the axis (6001) of the first shaft, a circular forward shielding cover projection (120) is arranged on the first virtual plane (6004), the central shaft (3) also has a forward central shaft projection (31) on the first virtual plane (6004), and at least part of the central shaft projection (31) is overlapped with the shielding cover projection (120).

2. The stroller of claim 1, wherein: at least two locking devices are arranged between the push handle rod (11), the upper support (1) and the lower support (2), and when the locking devices are in a locking state, the seat (5) has a reverse pushing state facing the push handle rod (11) and a forward pushing state facing away from the push handle rod (11); when the locking device is in an unlocking state, the upper connecting piece (13) drives the seat (5) to rotate relative to the lower support (2) by taking the central shaft (3) as a rotating shaft, the push handle rod (11) rotates relative to the upper connecting piece (13) around the first shaft (6), so that the upper part of the push handle rod (11) swings relative to the upper connecting piece (13) in the front-back direction, and the seat (5) is switched between a reverse pushing state facing the push handle rod (11) and a forward pushing state backing against the push handle rod (11).

3. Child stroller according to claim 1, characterized in that the axis (6001) of the first shaft intersects the solid body of the central shaft (3).

4. Child stroller according to claim 3, characterized in that the axis (6001) of the first shaft perpendicularly intersects the axis (6003) of the central shaft.

5. The stroller of claim 1, wherein the shielding cover (12) is integrally formed with the lower end of the handle bar (11), and the shielding cover (12) is disc-shaped with the axis (6001) of the first shaft as the center.

6. Child stroller according to claim 1, characterized in that the axis (6002) of the second shaft and the axis (6001) of the first shaft lie in a same second virtual plane (6005) perpendicular to the horizontal plane.

7. The stroller of claim 6, wherein the axis (6001) of the first shaft is above the axis (6002) of the second shaft.

8. The stroller of claim 6, wherein the axis (6003) of the central shaft lies in the second virtual plane (6005).

9. Child stroller according to claim 1, characterized in that the horizontal plane in which the axis (6002) of the second shaft is located intersects the solid of the central shaft (3).

10. Child stroller according to claim 1, characterized in that the axis (6002) of the second shaft perpendicularly intersects the axis (6003) of the central shaft.

11. Child stroller according to claim 1, wherein said first axis (6001) passes through said cover (12).

12. Child stroller according to claim 1, wherein said second axis (6002) passes through said cover (12).

13. The stroller of claim 1, wherein the cover (12) is one of a disc, an oval, a quadrilateral, and a triangle centered on the axis (6001) of the first shaft.

14. The utility model provides a children's shallow, has expansion state and fold condition, children's shallow is including pushing away lever (11), upper bracket (1), lower carriage (2), wheel subassembly (4), its characterized in that, under expansion state:

the lower end part of the push handle rod (11) is rotatably connected with the upper connecting piece (13) through a first shaft (6), and a shaft axis (6001) of the first shaft extends along the left and right directions of the baby stroller;

the lower support (2) comprises front wheel supports (21) positioned on the left side and the right side, rear wheel supports (22) positioned on the left side and the right side, and lower connecting pieces (23) used for connecting the front wheel supports (21) and/or the rear wheel supports (22) on the left side and the right side, wherein wheel assemblies (4) are arranged on the lower portions of the front wheel supports (21) and the rear wheel supports (22), the upper end portion of each front wheel support (21) is rotatably connected with the lower connecting piece (23) through a front shaft (71), the upper end portion of each rear wheel support (22) is rotatably connected with the lower connecting piece (23) through a rear shaft (72), and the axial lead of the front shaft (71) and the axial lead of the rear shaft (72) are respectively parallel to the axial lead (6001) of the first shaft;

the periphery of the upper end part of the front wheel bracket (21) and the upper end part of the rear wheel bracket (22) which are respectively rotatably connected with the lower connecting piece (23) forms a rotating connecting part (25), the outermost side of the rotating connecting part (25) in the left-right direction is provided with a shielding cover (12), the shielding cover (12) at least partially covers the rotating connecting part (25) in the left-right outer side direction, and the shielding cover (12) is arranged at the lower end part of the push handle rod (11);

the upper connecting piece (13) is rotatably connected with the lower connecting piece (23) through a central shaft (3), and the axis line (6003) of the central shaft extends along the height direction of the baby stroller;

the axis (6003) of the central shaft is located in a first virtual plane (6004) perpendicular to a horizontal plane, the axis (6001) of the first shaft is perpendicular to the first virtual plane (6004), the shielding cover (12) rotates 360 degrees around the axis (6001) of the first shaft as a circle center and has a circular forward shielding cover projection (120) on the first virtual plane (6004), the central shaft (3) also has a forward central shaft projection (31) on the first virtual plane (6004), and at least part of the central shaft projection (31) is overlapped with the shielding cover projection (120).

15. The stroller of claim 14, wherein: at least two of the push handle rod (11), the upper support (1) and the lower support (2) are provided with locking devices, and when the locking devices are in a locking state, the seat (5) has a reverse pushing state facing the push handle rod (11) and a forward pushing state facing back to the push handle rod (11); when the locking device is in an unlocking state, the upper connecting piece (13) drives the seat (5) to rotate relative to the lower support (2) by taking the central shaft (3) as a rotating shaft, the push handle rod (11) rotates relative to the upper connecting piece (13) around the first shaft (6), so that the upper part of the push handle rod (11) swings relative to the upper connecting piece (13) in the front-back direction, and the seat (5) is switched between a reverse pushing state facing the push handle rod (11) and a forward pushing state backing against the push handle rod (11).

16. Child stroller according to claim 14, characterized in that the axis (6001) of the first shaft intersects the solid of the central shaft (3).

17. The stroller of claim 16, wherein the axis (6001) of the first shaft perpendicularly intersects the axis (6003) of the central shaft.

18. The stroller of claim 14, wherein the shielding cover (12) is integrally formed with the lower end of the handle bar (11), and the shielding cover (12) is formed in any one of a disc shape, an oval shape, a quadrilateral shape, and a triangular shape centered on the axis (6001) of the first shaft.

19. Child stroller according to claim 14, wherein said first axis (6001) passes through said cover (12).

20. Child stroller according to claim 14, characterized in that the axis of the front axle (71) and the axis of the rear axle (72) respectively pass through the cover (12).

21. The stroller of claim 14, wherein the cover (12) is one of a disc, an oval, a quadrilateral, and a triangle centered on the axis (6001) of the first shaft.