CN114789747B - Child cart - Google Patents

Child cart Download PDF

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Publication number
CN114789747B
CN114789747B CN202210474464.0A CN202210474464A CN114789747B CN 114789747 B CN114789747 B CN 114789747B CN 202210474464 A CN202210474464 A CN 202210474464A CN 114789747 B CN114789747 B CN 114789747B
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China
Prior art keywords
shaft
stroller
axis
shielding cover
central shaft
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CN202210474464.0A
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Chinese (zh)
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CN114789747A (en
Inventor
贺新军
高翔
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Goodbaby Child Products Co Ltd
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Goodbaby Child Products Co Ltd
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Priority to CN202210474464.0A priority Critical patent/CN114789747B/en
Publication of CN114789747A publication Critical patent/CN114789747A/en
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Publication of CN114789747B publication Critical patent/CN114789747B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00Accessories or details specially adapted for children's carriages or perambulators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62BHAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/20Handle bars; Handles
    • B62B9/203Handle bars; Handles movable from front end to rear end position

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)

Abstract

The invention discloses a child stroller with an unfolding state and a folding state, which comprises a push handle rod, a lower bracket, an upper bracket and a central shaft. The lower end of the push handle rod is rotationally connected with an upper connecting piece through a first shaft, the front wheel support is rotationally connected with a lower connecting piece through a front shaft, the rear wheel support is rotationally connected with the lower connecting piece through a rear shaft, and the upper connecting piece is rotationally connected with the lower connecting piece through a central shaft. The lower end of the pushing handle rod is provided with a shielding cover, the axial lead of the central shaft is positioned in a first virtual plane vertical to the horizontal plane, the shielding cover rotates 360 degrees by taking the axial lead of the first shaft as the center of a circle, a circular forward shielding cover projection is arranged on the first virtual plane, a forward central shaft projection is also arranged on the first virtual plane, and the central shaft projection is at least partially overlapped with the shielding cover projection. The baby stroller provided by the invention has the advantages of smaller volume, more attractive appearance and stable and balanced whole body in pushing or rotating of the baby stroller.

Description

Child cart
RELATED APPLICATIONS
The invention discloses a divisional application which is submitted aiming at application number 202011464998.2, application date 2020, 12 months and 14 days and the invention name of a child cart.
Technical Field
The invention relates to the technical field of children products, in particular to a child trolley.
Background
The child cart in the prior art has a forward pushing state that the child is back to the pusher and a reverse pushing state that the child faces the pusher, and the upper frame can rotate around a vertical shaft relative to the lower frame so as to switch between the forward pushing state and the reverse pushing state. In the prior art, when the side of the child stroller is observed, the upper frame is obviously higher than the lower frame, and the whole child stroller has larger volume; still other child carts require that the child be moved out of the child cart to effect a transition between the forward and reverse pushing conditions when the child needs to be switched between the forward and reverse pushing conditions.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an improved child stroller.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A stroller having an expanded state and a collapsed state, the stroller comprising a push handle bar, an upper support, a lower support, a wheel assembly, in the expanded state:
the upper bracket comprises an upper connecting piece and a seat arranged on the upper connecting piece;
the lower end part of the pushing handle rod is rotationally connected with the upper connecting piece through a first shaft, and the axial lead of the first shaft extends along the left-right direction of the child 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 lower connecting pieces used for connecting the front wheel supports and the rear wheel supports on the left side and the right side, wheel assemblies are arranged at the lower parts of the front wheel supports and the rear wheel supports, the upper end parts of the front wheel supports on each side are rotationally connected with the lower connecting pieces through front shafts, the upper end parts of the rear wheel supports on each side are rotationally connected with the lower connecting pieces through rear shafts, and the axial leads of the front shafts and the axial leads of the rear shafts are respectively parallel to the axial leads of the first shafts;
the upper connecting piece is rotationally connected with the lower connecting piece through a central shaft, and the axial lead of the central shaft extends along the height direction of the child stroller;
The child stroller further comprises a shielding cover, the shielding cover is arranged at the lower end of the pushing handle rod, the axial lead of the central shaft is located in a first virtual plane perpendicular to the horizontal plane, the axial lead of the first shaft is perpendicular to the first virtual plane, the shielding cover rotates 360 degrees by taking the axial lead of the first shaft as the center of a circle, a circular forward shielding cover projection is arranged on the first virtual plane, a forward central shaft projection is also arranged on the first virtual plane, and the central shaft projection at least partially overlaps with the shielding cover projection.
Preferably, the axis of the front shaft and the axis of the first shaft are located in the same horizontal plane.
Preferably, the axis of the rear axle and the axis of the first axle are located in the same horizontal plane.
Preferably, the axis of the first shaft passes through the shielding cover, and the axis of the front shaft and the axis of the rear shaft are positioned in the same horizontal plane with the axis of the first shaft.
Preferably, the axis of the front shaft does not pass through the shielding cover, and the axis of the rear shaft does not pass through the shielding cover.
Preferably, a horizontal plane on which an axis line of the first shaft is located intersects with a solid body of the central shaft.
Preferably, the axis of the first shaft intersects the solid body of the central shaft.
Preferably, the axis of the first shaft perpendicularly intersects with the axis of the central shaft.
Preferably, the front shaft is located at the rear of the rear shaft in the front-rear direction of the lower bracket, and the axis of the first shaft is located between the axis of the front shaft and the axis of the rear shaft.
Further preferably, a sliding sleeve capable of sliding along the front wheel support is arranged on the front wheel support, and the rear wheel support is rotatably connected with the sliding sleeve.
Still further preferably, the rear wheel support is rotatably connected to the sliding sleeve through a sliding sleeve shaft, and an axis of the sliding sleeve shaft is parallel to an axis of the first shaft.
Due to the application of the technical scheme, the whole volume of the child stroller provided by the invention is obviously reduced, so that the center of gravity of the upper bracket is reduced, and the whole stroller body is stable and balanced in pushing or rotating of the child stroller.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
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 in a forward-pushed state according to a first embodiment of the present invention;
fig. 3 is a partially exploded perspective view of a stroller in a forward pushing state according to a first embodiment of the present invention;
FIG. 4A is a schematic side view of a stroller in a forward pushing state after a leg rest is attached to the stroller in accordance with an embodiment of the present invention;
FIG. 4B is a schematic cross-sectional view of A-A of FIG. 4A;
FIG. 4C is a schematic cross-sectional view of B-B of FIG. 4A;
FIG. 5A is a schematic diagram of a partial perspective structure of a child stroller in a forward pushing state after leg supports are attached;
FIG. 5B is a schematic view of the cross-sectional structure B-B of FIG. 5A;
fig. 6 is a schematic perspective view of a child stroller according to a first embodiment of the present invention with an upper connector hidden in a forward pushing state;
FIG. 7 is a schematic side view of a child stroller according to a first embodiment of the present invention with an upper connector hidden in a forward pushing state;
FIG. 8 is a schematic view of a projection structure of a part of a hidden upper connecting piece of a stroller in a forward pushing state, which is cut along an axial line of a central shaft in a vertical plane perpendicular to a horizontal plane;
FIG. 9A is a schematic perspective view of the stroller in a forward pushing state;
FIG. 9B is a schematic view of the push handle bar of the stroller in the present invention swinging from a forward push position to a vertical position;
FIG. 9C is a schematic diagram showing the rotation process of the stroller from the forward pushing state to the reverse pushing state;
FIG. 9D is a schematic view of the push handle bar of the stroller in the present invention swinging from a vertical position to a reverse position;
FIG. 9E is a schematic view of the stroller in a thrust-back position according to the present invention;
fig. 10 is a schematic perspective view of a stroller in a forward pushing state according to a second embodiment of the present invention;
FIG. 11A is a schematic diagram of a partially perspective side view structure of a stroller in a forward pushing state according to a second embodiment of the present invention;
FIG. 11B is a schematic cross-sectional view of A-A of FIG. 11A;
FIG. 12A is a schematic view of a partially perspective side view of a stroller in a forward-pushed position according to a third embodiment of the present invention;
FIG. 12B is a schematic cross-sectional view of B-B of FIG. 12A;
FIG. 13 is a schematic view of a partially perspective side view of a visible central axis of a stroller in a forward-pushed position according to a third embodiment of the present invention;
FIG. 14 is a schematic view of a partially perspective side view of a stroller in a forward-pushed position according to a fourth embodiment of the present invention;
FIG. 15 is a schematic view of a partially perspective side view of a stroller in a forward-pushed position according to a fifth embodiment of the present invention;
FIG. 16A is a schematic view of a partially perspective side view of a stroller in a forward-pushed position according to a sixth embodiment of the present invention;
FIG. 16B is a schematic view in section B-B of FIG. 16A;
FIG. 17 is a schematic perspective view of the stroller in a collapsed position shown in FIG. 9A in a forward pushed position;
fig. 1 to 16B are all structural diagrams of the present invention in an unfolded state.
Wherein: 1-an upper bracket; 11-pushing a handle bar; 12-a shielding cover; 120-shadow cover projection; 13-upper connection; 130-armrest portion; 131-a backrest portion; 2-a lower bracket; 21-a front wheel bracket; 22-rear wheel brackets; 23-lower connection; 24-sleeve; 25-a rotational connection; 3-a central axis; 31-central axis projection; 4-a wheel assembly; 5-seating; 51-leg rest; 6-a first shaft; 6000-horizontal plane; 6001-the axis of the first shaft; 6002-the axis of the second shaft; 6003-the axis of the central shaft; 6004-a first virtual plane; 6005-a second virtual plane; 7-a second axis; 71-front axle; 72-a 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 attached drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer", "left-right direction", "height direction", "front-rear direction", etc. indicate orientations or positional relationships when a person who pushes a stroller holds a push handle bar based on fig. 1, are shown only for convenience of description and simplification of description, and do not indicate or imply that the device or element to be referred must have a specific orientation, have only a specific orientation, be configured and operate in a specific orientation, and therefore 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 or indirectly fixed or connected to the other feature. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Further, the descriptions of the upper, lower, left, right, etc. used in the present invention are merely with respect to the mutual positional relationship of the constituent elements of the present invention in the drawings.
Example 1
As shown in fig. 1 to 8, the present embodiment provides a stroller having an unfolded state and a folded state (as shown in fig. 17), which includes a push handle bar 11, a lower frame 2, an upper frame 1, a central shaft 3, and a wheel assembly 4, wherein the push handle bar 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 bracket 1 includes an upper connector 13 and a seat 5 disposed on the upper connector 13, and the push rod 11 is rotatably connected to the upper connector 13 in the upper bracket 1 through the first shaft 6, and the upper connector 13 is rotatably connected to the lower connector 23 in the lower bracket 2 through the central shaft 3. In general, a child car has a member for directly supporting a child, such as a seat, a sleeping bag, or a cradle, which is collectively referred to as a seat 5 in this embodiment, and the child is seated in the seat 5 with its facing direction referred to as the seat 5. The seat 5 is directly or indirectly connected to the upper connection 13, or the upper connection 13 is part of the seat 5, the seat 5 being rotatable with the upper connection 13 as a whole about the central axis 3. In this embodiment, the seat 5 further includes a armrest 130, a backrest 131, and a leg rest 51.
The push handle bars 11 are arranged on the left side and the right side, the push handle bars 11 can be telescopic or folding, and the positions for holding can also be arranged commonly in the field, so that the invention is not limited. In this embodiment, the pushing handle 11 comprises an upper pushing rod and a lower pushing rod which are telescopically sleeved together, and the upper ends of the pushing handle 11 at two sides are connected through handrails. The lower ends of the pushing handle bars 11 at the two sides are respectively connected with the upper connecting piece 13 in a rotating way through a first shaft 6, and the axial lead 6001 of the first shaft extends along the left-right direction of the baby carriage; the shielding cover 12 is disposed on the left and right sides of the stroller, the shielding cover 12 in this embodiment is integrally disposed with the lower end portion of the push handle 11, and the shielding cover 12 may have any shape, for example, the shielding cover 12 is any one of a disc shape, an oval shape, a quadrilateral shape, and a triangle shape, with the axis 6001 of the first shaft as the center, and the shielding cover 12 in this embodiment is a disc shape or a disc shape body with the axis 6001 of the first shaft as the center (circle center). The push handle bar 11 in this embodiment is rotatable relative to the upper connector 13.
The lower bracket 2 comprises a front wheel bracket 21, a rear wheel bracket 22 and a lower connecting piece 23, wherein the front wheel bracket 21 and the rear wheel bracket 22 are symmetrically arranged on the left side and the right side, the lower connecting piece 23 is used for connecting the front wheel bracket 21 and/or the rear wheel bracket 22 on the left side and the right side, the lower connecting piece 23 extends along the left direction and the right direction of the stroller, and the lower connecting piece 23 and the front wheel bracket 21 and/or the rear wheel bracket 22 can be fixedly connected or integrally formed and can also be rotationally connected; the lower part of the lower bracket 2 is provided with a wheel assembly 4, and in this embodiment, the lower parts of the front wheel bracket 21 and the rear wheel bracket 22 are respectively provided with a wheel assembly 4, which in this embodiment is a steering wheel. The lower parts 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 support 21 is rotatably connected to the upper end of the rear wheel support 22 via the second shaft 7, and in this embodiment, the front wheel support 21 is located outside the rear wheel support 22 at the connection position of the front wheel support 21 and the rear wheel support 22, and the rear wheel support 22 is rotatably connected to the lower connecting member 23 about the axis 6002 of the second shaft, and further, the rear wheel support 22 is rotatably connected to the lower connecting member 23 via the second shaft 7. The axis 6002 of the second shaft extends in the left-right direction of the stroller, and the lower connecting member 23 is provided between the rear wheel brackets 22 on both sides.
The axis 6002 of the second shaft is parallel to or coincident with the axis 6001 of the first shaft, enabling the cart to be more stable and aesthetically pleasing. In this embodiment, as shown in fig. 1-2, the axis line 6002 of the second shaft is parallel to the axis line 6001 of the first shaft, the axis line 6001 of the first shaft is located above the axis line 6002 of the second shaft, the axis line 6002 of the second shaft and the axis line 6001 of the first shaft are located in the same second virtual plane 6005 perpendicular to the horizontal plane, and the axis line 6003 of the central shaft is also located in the second virtual plane 6005.
The upper end portion of each side front wheel support 21 and the upper end portion of the rear wheel support 22 form a rotation connecting portion 25 at the periphery of the second shaft 7, the outermost side of the rotation connecting portion 25 in the left-right direction is provided with a shielding cover 12, the shielding cover 12 at least partially covers the rotation connecting portion 25 in the left-right outer direction, and the axis 6001 of the first shaft passes through the shielding cover 12. The cover 12 may be provided separately or integrally with other peripheral members such as the upper connector 13 or the lower connector 23, instead of being integrally connected to the lower end portion of the push rod 11.
The outer wall of the rotating connecting portion 25 is a cylindrical surface or a conical surface taking the axial lead 6003 of the central shaft as the central shaft, namely, under 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 bracket 1 of the stroller can smoothly rotate around the axial lead 6003 of the central shaft, and meanwhile, when the stroller is in non-state conversion, the outer wall of the rotating connecting portion 25 is abutted or attached with the upper bracket 1 or the pushing handle 11 at the corresponding position, so that the lower bracket 2 stably supports the upper bracket 1 in the transverse direction of the stroller, and the structural strength of the transverse direction of the stroller is enhanced.
The upper connecting piece 13 is rotatably connected with the lower bracket 2 through the central shaft 3, further, the central shaft 3 is respectively connected with the upper connecting piece 13 and the lower bracket 2, the axial lead 6003 of the central shaft extends along the height direction of the stroller, and the axial lead 6003 of the central shaft is positioned in a plane (namely a vertical plane) perpendicular to the horizontal 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 in a horizontal plane relative to the lower bracket 2 around the central shaft 3 as a whole. The upper bracket 1 can freely rotate 180 degrees around the central shaft 3 from the forward position to the reverse position; accordingly, the stroller has at least two use states, in this embodiment, a forward pushing state and a backward pushing state, respectively, when the stroller is in the forward pushing state as shown in fig. 9A, the seat 5 is oriented forward and opposite to the push handle bar 11, the backrest 131 of the seat 5 is inclined backward, the armrest 130 of the seat 5 is oriented forward, and the upper bracket 1 is located in the forward position; when the stroller is in the reverse pushing state as shown in fig. 9E, the seat 5 is oriented rearward and faces the push rod 11, the backrest portion 131 of the seat 5 is inclined forward, the armrest portion 130 of the seat 5 is oriented rearward, and the upper bracket 1 is in the reverse position; the fore-and-aft direction of the stroller refers to the arrangement of the front wheel assembly and the rear wheel assembly.
The left and right, height, front and back directions of the stroller refer to the left and right, height, front and back directions of the stroller when the stroller is in a forward pushing state (shown in fig. 1 and 9A) or in a reverse pushing state (shown in fig. 9E); vertical, horizontal, etc. orientations refer to vertical, horizontal, etc. (as shown in fig. 1) when the stroller is placed on a horizontal ground in a forward pushing state or a reverse pushing state, so as to facilitate description of the inventive content 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 an axis line 6001 of the first axis is perpendicular to the first virtual plane 6004. For convenience of description, in this embodiment, the axis 6003 of the central 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 shaft as the center of the circle 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 shaft 3 on the first virtual plane 6004 is the central shaft projection 31, and the central shaft projection 31 at least partially overlaps with the shielding cover projection 120; as shown in fig. 8, the center axis projection 31 partially overlaps the shield cover projection 120.
Since the central axis projection 31 and the shielding cover projection 120 are partially overlapped, when the stroller is observed from the side of the stroller as shown in fig. 7, the central axis 3 is at least partially shielded by the shielding cover 12, so that the whole stroller is more attractive, the position of the shielding cover 12 lowers the center of gravity of the upper bracket 1, and the whole stroller body is stable and balanced and the folded height is reduced during pushing or rotating of the stroller.
Further preferably, the top end of the projection 31 of the central shaft 3 on the first virtual plane 6004 is located in the shielding cover projection 120, so as to further improve the aesthetic degree of the child stroller.
The projections of the components referred to below refer to projections projected perpendicularly onto the first virtual plane 6004 unless otherwise specified.
The axis 6001 of the first axis intersects the shield projection 120, in this embodiment, the axis 6001 of the first axis passes through the shield 12. The horizontal plane 6000, in which the axis 6001 of the first axis is located, intersects the solid body of the central axis 3 such that the first axis is close to the height of the central axis 3. Further, the axis 6001 of the first shaft intersects with the solid body 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 perpendicularly intersects with the axis 6003 of the central shaft, so that the overall structure of the frame of the stroller is more compact and the center of gravity is stable.
The central shaft 3 is at least rotatably connected to one of the upper bracket 1 and the lower bracket 2, and in this embodiment, the central shaft 3 is fixedly connected to the upper bracket 1 or integrally formed with the upper bracket 1, and the central shaft 3 is rotatably connected to the lower bracket 2.
In this embodiment, the lower connector 23 is located below the upper connector 13, and the central shaft 3 is rotatably connected to the lower connector 23. Specifically, the lower connecting member 23 is a cross bar with two ends connected to the rear wheel brackets 22 on the left and right sides, as shown in fig. 2 and 6, a sleeve 24 extending in the vertical direction is provided at the middle of the lower connecting member 23, and the lower part of the central shaft 3 is rotatably inserted into the sleeve 24, as shown in fig. 8, and the projection of the sleeve 24 and the projection 120 of the shielding cover may partially or completely overlap. The length of the sleeve 24 in the vertical direction is greater than the length of 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 child stroller is simpler.
The horizontal plane on which the axis 6002 of the second shaft is located intersects the solid body of the central shaft 3, or further, the axis 6002 of the second shaft intersects the solid body of the central shaft 3, in this embodiment, the axis 6002 of the second shaft intersects the axis 6003 of the central shaft. The axis 6002 of the second shaft intersects the shield projection 120, or further, the axis 6002 of the second shaft passes through the shield 12 such that the second shaft 7 is proximate in height to the central shaft 3.
The child stroller further comprises a locking device, and the locking device is arranged among at least two of the push handle rod 11, the upper bracket 1 and the lower bracket 2. In this embodiment, a locking device is provided between the push handle 11 and the upper bracket 1, and a locking device is provided between the upper bracket 1 and the lower bracket 2. In other embodiments, a locking device may be provided between the push handle 11 and the lower bracket 2, and a locking device may be provided between the upper bracket 1 and the lower bracket 2; a locking device can be arranged among the push handle rod 11, the upper bracket 1 and the lower bracket 2. The locking means can be of various types, also known in the art, for locking or unlocking two parts together, the application not being described in detail; in the locked state of the locking device, the seat 5 can be in a thrust-back state (fig. 9E) facing the push rod 11 or a thrust-forward state (fig. 9A) facing away from the push rod 11; in the unlocked state of the locking device, as shown in fig. 9A to 9E, the upper link 13 drives the seat 5 to rotate relative to the lower bracket 2 about the central axis 3, and the push rod 11 rotates relative to the upper link 13 about the first axis 6, so that the upper portion of the push rod 11 swings in the front-rear direction relative to the upper link 13, and the seat 5 is switched between a reverse pushing state facing the push rod 11 and a forward pushing state facing away from the push rod 11.
Specifically, as shown in fig. 9A, when the stroller is in the forward pushing state, the upper portion of the push handle bar 11 is inclined rearward of the stroller. After the lock device is unlocked, the upper portion of the push handle lever 11 can swing forward about the axis 6001 of the first shaft in the arrow direction in fig. 9A. Similarly, when the stroller is in the reverse pushing state as shown in fig. 9E, the push handle bar 11 can also be turned forward around the axis 6001 of the first shaft.
When the stroller is shifted from the forward pushing state to the reverse pushing state, as shown in fig. 9A, the push handle lever 11 swings forward about the first shaft 6 as the rotation axis, and can swing directly to the forward inclined position. For convenience of operation, the push rod 11 may be swung to the vertical position shown in fig. 9B, and then the upper bracket 1 is rotated 180 ° in the horizontal plane with respect to the lower bracket 2 about the central axis 3 as the rotation axis according to the arrow direction in fig. 9B-C to the position shown in fig. 9D, with the seat 5 facing rearward. The upper part of the push handle bar 11 is then swung back from the vertical position of fig. 9D to the position of fig. 9E, at which point the stroller enters the reverse push state, completing the transition from the forward push state to the reverse push state. The transition of the stroller from the reverse push state to the forward push state is similar to the above situation, and the stroller can be operated in the reverse direction. The push handle bar 11, the upper bracket 1 and the parts of the seat 5, as well as the child in the seat 5, do not interfere with the lower bracket 2 when the stroller is switched between the forward pushing state and the reverse pushing state. In the whole transition process, children in the child cart do not need to leave the child cart, and meanwhile, no matter the child cart is in a forward pushing state or a reverse pushing state, the pushing handle rod 11 is in a backward inclined state, so that the operation of a cart operator is facilitated.
Or the whole upper bracket 1 and the push handle rod 11 of the baby stroller are rotated 180 degrees relative to the lower bracket 2 by taking the central shaft 3 as a rotation shaft, and then the push handle rod 11 swings in a direction of taking the first shaft 6 as a rotation shaft to be far away from the front wheel assembly, so that the upper part of the push handle rod 11 is inclined towards the rear of the baby stroller.
Example two
As shown in fig. 10, 11A-B, the present embodiment is different from the first embodiment in that the lower bracket 2 includes front wheel brackets 21 on the left and right sides, rear wheel brackets 22 on the left and right sides, and lower connecting members 23 for connecting the front wheel brackets 21 and the rear wheel brackets 22 on the left and right sides; the lower part of the lower bracket 2 is provided with a wheel assembly 4, in this 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 front wheel bracket 21 is rotationally 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 coincides with the shaft axis 6001 of the first shaft and all passes through the center of the shielding cover 12, and the shaft axis 6003 of the central shaft is also perpendicularly intersected with the shaft axis 6001 of the first shaft.
Example III
As shown in fig. 12A, 12B, 13, this embodiment is different from the first embodiment in that the child cart in this embodiment is such that the lower bracket 2 includes front wheel brackets 21 on the left and right sides, rear wheel brackets 22 on the left and right sides, lower connecting members 23 for connecting the front wheel brackets 21 and the rear wheel brackets 22 on the left and right sides, the upper connecting members 13 are rotatably connected with the lower connecting members 23 through the center shafts 3, wheel assemblies 4 are provided at the lower portions of the front wheel brackets 21 and the rear wheel brackets 22, the upper end portions of the front wheel brackets 21 and the upper end portions of the rear wheel brackets 22 on each side are rotatably connected with the lower connecting members 23, and the axis line of the rotational connection is parallel to the axis line 6001 of the first shaft. Specifically, the upper end of each side front wheel bracket 21 is rotatably connected to the lower connecting member 23 via a front axle 71, the upper end of each side rear wheel bracket 22 is rotatably connected to the lower connecting member 23 via a rear axle 72, the axis of the front axle 71 and the axis of the rear axle 72 are both parallel to the axis 6001 of the first axle, the axis of the front axle 71 and the axis of the rear axle 72 are located in the same horizontal plane, the front axle 71 is located in front of the rear axle 72, and the axis 6001 of the first axle is located above the horizontal plane in which the axes of the front axle 71 and the rear axle 72 are located.
In this embodiment, the upper end of the front wheel support 21 and the upper end of the rear wheel support 22 are respectively connected with the lower connector 23 in a rotating manner to form a rotating connection portion 25, the outermost side of the rotating connection portion 25 in the left-right direction is provided with an elliptical shielding cover 12, the shielding cover 12 at least partially covers the rotating connection portion 25 in the left-right outer direction, and the shielding cover 12 in this embodiment is fixedly connected with or integrally formed with the lower end of the push handle bar 11.
The axis 6001 of the first shaft passes through the elliptical center of the shielding cover 12, and the axis of the rotation shaft, which is rotatably connected to the lower connecting member 23 at the upper end of the front wheel bracket 21 and the upper end of the rear wheel bracket 22, respectively, also passes through the shielding cover 12, that is, the axis of the front shaft 71 and the axis of the rear shaft 72 both pass through the shielding cover 12.
As shown in 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 as the center and the long radius of the ellipse as the radius, and the center axis projection 31 at least partially overlaps with the shielding cover projection 120.
Example IV
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 disposed in parallel and all 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 outer shape, and the axis 6001 of the first shaft, the axis of the front shaft 71, and the axis of the rear shaft 72 are disposed parallel to each other and all pass through the shielding cover 12. The axis 6001 of the first shaft perpendicularly intersects with the axis 6003 of the center shaft, and the axis 6001 of the first shaft passes through the center of the square of the shielding cover 12.
Example six
As shown in fig. 16A to 16B, the present embodiment is different from the third embodiment in that the child cart in the present embodiment includes a front wheel support 21 on the left and right sides, a rear wheel support 22 on the left and right sides, a lower connecting member 23 for connecting the front wheel support 21 and the rear wheel support 22 on the left and right sides, and an upper connecting member 13 rotatably connected to the lower connecting member 23 through a central shaft 3, and wheel assemblies 4 are provided at the lower portions of the front wheel support 21 and the rear wheel support 22. The front wheel support 21 is provided with a sliding sleeve 74 which can slide along the front wheel support 21, the rear wheel support 22 is rotatably connected with the sliding sleeve 74 through a sliding sleeve shaft 73, and the axial line of the sliding sleeve shaft 73 is parallel to the axial line 6001 of the first shaft. The upper end of each side front wheel bracket 21 is rotatably connected to the lower link 23 via a front axle 71, and the upper end of each side rear wheel bracket 22 is rotatably connected to the lower link 23 via a rear axle 72, and the axes of the front axle 71 and the rear axle 72 are respectively parallel to the axis 6001 of the first axle. The front axle 71 is located behind the rear axle 72, and the axis 6001 of the first axle, the axis of the front axle 71, and the axis of the rear axle 72 are located in the same horizontal plane, with the axis 6001 of the first axle being located between the axes of the front axle 71 and the rear axle 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 central shaft intersects with the axis 6001 of the first shaft and is located in the same vertical plane.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention to those skilled in the art to understand the present invention and implement the same. All equivalent changes or modifications made in accordance with the tight nature of the present invention should be included in the scope of the present invention.

Claims (10)

1. A stroller having an unfolded state and a folded state, the stroller comprising a push handle bar (11), an upper support (1), a lower support (2), a wheel assembly (4), characterized in that in the unfolded 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 pushing handle rod (11) is rotationally connected with the upper connecting piece (13) through a first shaft (6), and the axial lead (6001) of the first shaft extends along the left-right direction of the child stroller;
The lower bracket (2) comprises front wheel brackets (21) positioned on the left side and the right side, rear wheel brackets (22) positioned on the left side and the right side, and lower connecting pieces (23) used for connecting the front wheel brackets (21) and the rear wheel brackets (22) on the left side and the right side, wheel assemblies (4) are arranged at the lower parts of the front wheel brackets (21) and the rear wheel brackets (22), the upper end parts of the front wheel brackets (21) on each side are rotationally connected with the lower connecting pieces (23) through front shafts (71), the upper end parts of the rear wheel brackets (22) on each side are rotationally connected with the lower connecting pieces (23) through rear shafts (72), and the axial leads of the front shafts (71) and the rear shafts (72) are respectively parallel to the axial leads (6001) of the first shafts;
The upper connecting piece (13) is rotationally connected with the lower connecting piece (23) through a central shaft (3), and the axial lead (6003) of the central shaft extends along the height direction of the child stroller;
The child stroller further comprises a shielding cover (12), the shielding cover (12) is arranged at the lower end of the pushing handle rod (11), the axial lead (6003) of the central shaft is located in a first virtual plane (6004) perpendicular to the horizontal plane, the axial lead (6001) of the first shaft is perpendicular to the first virtual plane (6004), the shielding cover (12) rotates for 360 degrees by taking the axial lead (6001) of the first shaft as a center of a circle and 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 the central shaft projection (31) at least partially overlaps with the shielding cover projection (120).
2. The stroller of claim 1, wherein: the axis of the front shaft (71) and the axis (6001) of the first shaft are positioned in the same horizontal plane.
3. The stroller of claim 1, wherein: the axis of the rear axle (72) and the axis (6001) of the first axle are positioned in the same horizontal plane.
4. The stroller of claim 1, wherein: an axial lead (6001) of the first shaft passes through the shielding cover (12), and an axial lead of the front shaft (71) and an axial lead of the rear shaft (72) are positioned in the same horizontal plane with the axial lead (6001) of the first shaft.
5. The stroller of claim 1, wherein: the axis of the front shaft (71) does not pass through the shielding cover (12), and the axis of the rear shaft (72) does not pass through the shielding cover (12).
6. The stroller of claim 1, wherein: the horizontal plane of the axis line (6001) of the first shaft is intersected with the entity of the central shaft (3).
7. The stroller of claim 1, wherein: an axis line (6001) of the first shaft intersects with a solid body of the central shaft (3); and/or, the axis line (6001) of the first shaft perpendicularly intersects with the axis line (6003) of the central shaft.
8. The stroller of any one of claims 1 to 7, wherein: the front axle (71) is located behind the rear axle (72), and the axis line (6001) of the first axle is located between the axis line of the front axle (71) and the axis line of the rear axle (72).
9. The stroller of claim 8, wherein: the front wheel support (21) is provided with a sliding sleeve (74) which can slide along the front wheel support (21), and the rear wheel support (22) is rotationally connected with the sliding sleeve (74).
10. The stroller of claim 9, wherein: the rear wheel support (22) is rotationally connected with the sliding sleeve (74) through a sliding sleeve shaft (73), and the axial lead of the sliding sleeve shaft (73) is parallel to the axial lead (6001) of the first shaft.
CN202210474464.0A 2020-12-14 2020-12-14 Child cart Active CN114789747B (en)

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CN202011464998.2A CN112678062B (en) 2020-12-14 2020-12-14 Children's barrow

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WO2022127602A1 (en) * 2020-12-14 2022-06-23 好孩子儿童用品有限公司 Baby stroller

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CN206615260U (en) * 2017-02-27 2017-11-07 好孩子儿童用品有限公司 A kind of children trolley

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