WO2019041495A1 - 儿童推车 - Google Patents

儿童推车 Download PDF

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Publication number
WO2019041495A1
WO2019041495A1 PCT/CN2017/107474 CN2017107474W WO2019041495A1 WO 2019041495 A1 WO2019041495 A1 WO 2019041495A1 CN 2017107474 W CN2017107474 W CN 2017107474W WO 2019041495 A1 WO2019041495 A1 WO 2019041495A1
Authority
WO
WIPO (PCT)
Prior art keywords
bracket
stroller
shaft
push rod
crossbar
Prior art date
Application number
PCT/CN2017/107474
Other languages
English (en)
French (fr)
Inventor
张兴荣
马福生
石平中
Original Assignee
好孩子儿童用品有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201721088136.8U external-priority patent/CN207173694U/zh
Priority claimed from CN201710753477.0A external-priority patent/CN107650993B/zh
Priority claimed from CN201710753536.4A external-priority patent/CN107697142B/zh
Priority claimed from CN201721088098.6U external-priority patent/CN207173692U/zh
Application filed by 好孩子儿童用品有限公司 filed Critical 好孩子儿童用品有限公司
Publication of WO2019041495A1 publication Critical patent/WO2019041495A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis

Definitions

  • the invention relates to the technical field of children's products, in particular to a stroller.
  • a stroller of the prior art includes a cart frame having an unfolded position and a folded position, a front wheel assembly and a rear wheel assembly disposed at a bottom of the cart frame, and configured to lock the cart frame in an unfolded state
  • the lower locking mechanism There are a wide variety of existing strollers, the number of cart frame bars is different, and the connection positions between the bars are different, so that the folding principle and the folding manner are different, and the effect after folding is also different. At present, most of the children's carts on the market have disadvantages such as a large number of rods and a large structural size after folding, and the production cost is high, and daily storage and carrying are also inconvenient.
  • the object of the present invention is to provide a stroller that can be folded and folded in a small volume in view of the deficiencies of the prior art.
  • the technical solution adopted by the present invention is:
  • a stroller comprising a cart frame having an unfolded state and a folded state, a front wheel assembly disposed at a lower front portion of the cart frame, and a rear portion disposed at a lower rear of the cart frame a wheel assembly and a locking mechanism for locking the cart frame in an unfolded position, wherein:
  • the cart frame includes side brackets respectively disposed on the left and right sides, and a cross bracket supported between the side brackets on the left and right sides, and the side brackets on each side include a front bracket, a rear bracket, and a push rod An assembly, a side armrest, a front link, and a rear link, the front wheel assembly being rotatably disposed at a lower portion of the front bracket by a first axle, the rear wheel assembly being rotatably disposed on the rear bracket by a second axle Lower part
  • An upper portion of the front bracket is rotatably coupled to an upper portion of the rear bracket, and a lower portion of the side armrest is rotatably coupled to at least one of an upper portion of the front bracket and an upper portion of the rear bracket.
  • An upper portion of the side armrest is rotatably coupled to a lower portion of the push rod assembly, and an end portion of the rear link is rotatably coupled to a lower portion of the push rod assembly, and the other end portion of the rear link is opposite to the front portion
  • One end of the connecting rod is rotatably connected, the rear connecting rod is rotatably connected with the rear bracket, and the other end of the front connecting rod is rotatably connected with the front bracket;
  • the stroller can be folded at least once, and when the stroller is folded once, the pusher assembly is flipped forward to drive the side armrest to flip down and close with the rear bracket, through the front link
  • the rod and the rear link drive the front bracket to be turned backwards to be close to the rear bracket, and when the stroller is in a folded state, the front wheel assembly and the rear wheel assembly on both sides are along Side by side in the left and right direction, when the stroller is in a folded state, in each of the left and right sides of the stroller, one of the first of the first axle and the second axle is located inside
  • the component is located within the contour of one of the two components of the front wheel assembly and the rear wheel assembly.
  • the first axle and the second axle extend in the same linear direction when the stroller is in a folded state.
  • the front wheel assembly and the rear wheel assembly on each side are respectively located on the inner and outer sides of the side brackets on the same side.
  • an upper portion of the front bracket and an upper portion of the rear bracket are rotatably coupled by a first side axle, and the rear wheel assembly of the left and right sides when the stroller is in an unfolded state Rotating respectively on the outer side of the rear bracket, and in each of the left and right sides, the front wheel assembly is located inside the first side shaft, and the rear wheel assembly is located on the first side shaft Outside.
  • an upper portion of the front bracket and an upper portion of the rear bracket are rotatably coupled by a first side axle, and the rear wheel assembly of the left and right sides when the stroller is in an unfolded state Rotatingly connected to the inner side of the rear bracket, and in each of the left and right sides, the front wheel assembly is located outside the first side shaft, and the rear wheel assembly is located at the first side shaft Inside.
  • a first line is formed between the first axle and the axial connection of the first side axle, and the second axle is connected to the axis of the first axle Forming a second straight line, when the stroller is in an unfolded state, an angle between the first straight line and the second straight line is 95 to 150 degrees, and the first wheel shaft and the axis of the second wheel shaft The distance between the heart lines is 400 ⁇ 500mm.
  • the angle between the first line and the second line is 105 to 130 degrees when the stroller is in the deployed state.
  • the stroller when the stroller is in a folded state, between the lower one of the two components of the first axle and the second axle and the upper end surface of the pusher assembly The distance is 230 ⁇ 330mm.
  • the stroller is further capable of secondary folding, and the front wheel assembly and the rear wheel assembly on both sides are in a front-rear direction when the stroller is in a double-folded state.
  • Side by side in each side of the stroller, one of the two components of the first axle and the second axle is located inside the two components of the front wheel assembly and the rear wheel assembly Located within the outline of a component on the outside.
  • the cross bracing comprises:
  • first crossbar extends in a left-right direction, and the left and right end portions of the first crossbar are respectively rotatably connected to the front brackets on the left and right sides through a first horizontal axis;
  • the second crossbar extends in a left-right direction, and the left and right end portions of the second crossbar are respectively rotatably connected to the rear brackets on the left and right sides through a second horizontal axis;
  • the third crossbar extends in a left-right direction, and the left and right end portions of the third crossbar are respectively rotatably connected to the pusher assembly on the left and right sides through a third horizontal axis;
  • the side brackets on both sides are turned around the inner side of the stroller about the first horizontal axis, the second horizontal axis, and the third transverse axis, respectively.
  • the first horizontal axis, the second horizontal axis, and the third side are located on each of the left and right sides of the cart frame
  • the horizontal axes all extend in the same straight line direction.
  • the pusher assembly includes a lower push rod and an upper push rod slidably disposed on the lower push rod along a length extension direction of the lower push rod, an upper portion of the side armrest One end portion of the rear link is rotatably connected to a lower portion of the lower push rod, respectively.
  • the pusher assembly includes a lower push rod, an upper push rod, and a push handle
  • the push handle includes a first rod and a second rod that are fixedly coupled, the first rod and the upper rod
  • the upper end of the push rod is fixedly connected, and when the stroller is in the unfolded state, the first rod and the third cross rod extend in the same linear direction when the stroller is in the second folded state
  • the first rod is perpendicular to the third cross rod.
  • the cross bracing comprises:
  • first crossbar extending in a left-right direction, the first crossbar being telescopically connectable between the front brackets on the left and right sides in a left-right direction;
  • the second crossbar extending in a left-right direction, the second crossbar being telescopically connectable between the rear brackets on the left and right sides in a left-right direction;
  • the third crossbar extending in a left-right direction, the third crossbar being telescopically connectable in a left-right direction between the pusher assemblies on the left and right sides;
  • the stroller can be double-folded, and when the stroller is folded twice, the first crossbar, the second crossbar and the third crossbar are contracted, and the side brackets on both sides Close together in the left and right direction.
  • an upper portion of the front bracket is pivotally coupled to an upper portion of the rear bracket by a rotating shaft
  • a lower portion of the side armrest is at least opposite an upper portion of the front bracket and an upper portion of the rear bracket
  • One of the two components is pivotally coupled by a shaft, the upper portion of the side armrest being pivotally coupled to the lower portion of the push rod assembly by a second shaft, the rear link and the lower portion of the push rod assembly being passed
  • the third shaft is pivotally connected, the rear link and the rear bracket are pivotally connected by a fourth shaft, the front link and the front bracket are pivotally connected by a fifth axis, and the front link and the rear link are connected
  • the rod is pivotally connected by a sixth shaft, and when the frame is in an unfolded state, a rotating shaft for connecting between any two of the front bracket, the rear bracket and the side armrest is located at the second axis and the fifth The rear of the shaft connection.
  • the present invention has the following advantages over the prior art: the rotation axis between the two brackets for connecting the front bracket, the rear bracket and the side armrest is located in the second axle and the second shaft The rear of the five-axis connection makes the folded frame as flat and neat, and the volume is small enough for transportation and carrying.
  • the front bracket, the rear bracket and the side armrest are pivotally connected by the same rotating shaft, the same rotating shaft is the first shaft, the push rod assembly, the side armrest, the rear bracket and the rear
  • the connecting rod constitutes a first four-bar linkage mechanism
  • the front bracket, the rear bracket, the front connecting rod and the rear connecting rod constitute a second four-bar linkage mechanism, and when the frame is folded, driving the first four-bar linkage mechanism
  • Any of the rods can drive the other rods to close together, and the rear bracket and the rear link movement in the first four-bar linkage mechanism drive the front bracket and the front link in the second four-bar linkage mechanism, and the front bracket And the front link and the rear bracket and the rear link are folded together.
  • the pusher assembly includes an upper push rod and a lower push rod that are slidably coupled to each other, the upper push rod and the lower push rod being disposed one above another, the side armrest and the rear link are both a push rod in the push rod assembly is pivotally connected, an upper portion of the front bracket, an upper portion of the rear bracket and a lower portion of the side armrest are pivotally connected to each other by a first shaft, and an upper portion of the side armrest and a lower portion of the lower push rod pass a second shaft is pivotally connected, an upper portion of the rear link is pivotally coupled to a lower portion of the lower push rod through a third shaft, and the rear link is pivotally coupled to the rear bracket via a fourth shaft, the front link The front portion and the front bracket are pivotally connected by a fifth shaft, the rear portion of the front link and the front portion of the rear link are pivotally connected by a sixth shaft, and when the frame is in an unfolded state, the first The shaft is located behind the line connecting the second shaft and the
  • the second shaft is above the third shaft on the lower push rod, the fourth shaft being located below the first shaft and behind the sixth shaft.
  • the side bracket further includes a seat post and a sliding sleeve, the sliding sleeve is pivotally connected to the side armrest through a seventh shaft, the seat post is disposed in the sliding sleeve and the rear portion thereof is The rear link is pivotally coupled by an eighth shaft that is slidable within the sliding sleeve.
  • the seventh shaft is between the first shaft and the second shaft on the side armrest
  • the eighth shaft is located between the third shaft and the fourth shaft on the rear link when When the frame is in an unfolded state, the side armrest is located in front of the push rod assembly and the rear link, the seat post is standing between the side armrest and the rear link and extends in the front-rear direction; when the frame is folded, The seat post is interlocked with the push rod assembly by the side armrest and the rear link linkage.
  • the present invention also provides a stroller, in particular a stroller for a double, comprising a stroller frame having an unfolded state and a folded state, and a front wheel disposed at a lower front portion of the stroller frame An assembly, a rear wheel assembly disposed at a lower rear portion of the cart frame, and a locking mechanism for locking the cart frame in an unfolded position, wherein the cart frame includes two of the aforementioned Side brackets on the side and side brackets in the middle.
  • the cart frame includes three side brackets arranged side by side in the left-right direction, and transverse brackets respectively connected between two adjacent side brackets, each of the side brackets including the front bracket a bracket, a rear bracket, a push rod assembly, a side armrest, a front link and a rear link, the front wheel assembly being rotatably disposed at a lower portion of the front bracket by a first axle, the rear wheel assembly being rotated by a second axle Is disposed at a lower portion of the rear bracket, an upper portion of the front bracket and an upper portion of the rear bracket are rotatably connected by a first side shaft, and a lower portion of the side armrest is at least opposite an upper portion and the rear of the front bracket
  • One of the upper two parts of the bracket is rotatably coupled, the upper portion of the side armrest is rotatably coupled to the lower portion of the push rod assembly, and one end of the rear link is rotated relative to the lower portion of the push rod assembly Connecting, the other end of the rear link is rot
  • first straight line between the first axle and the axial connection of the first side shaft, and forming a second straight line between the second axle and the axial connection of the first side axle, when When the double stroller is in an unfolded state, an angle between the first straight line and the second straight line is 95-150 degrees on each of the side brackets, and the first axle and the The distance between the shaft centers of the second axle is 400 ⁇ 500mm.
  • the stroller can be folded at least once, and when the stroller is folded once, the pusher assembly is flipped forward to bring the side armrest down and close to the rear bracket.
  • the wheel assembly and the rear wheel assembly are respectively located on the left and right sides of the side brackets on the same side.
  • an angle between the first straight line and the second straight line is 105 to 130 degrees.
  • the cross bracing comprises:
  • first crossbar extending in a left-right direction, wherein one end of the first crossbar and the outer front bracket are rotatably connected by a first horizontal axis, and the other end of the first crossbar The portion is fixedly connected to the front bracket in the middle;
  • a second crossbar extending in a left-right direction, wherein one end of the second crossbar and the outer rear bracket are rotatably connected by a second horizontal axis, and the other end of the second crossbar The portion is fixedly connected to the rear bracket in the middle;
  • a third crossbar extending in a left-right direction, an end of the third crossbar being rotatably connected to an upper portion of the pusher assembly on the outer side by a third transverse axis, the third crossbar The other end is fixedly connected to the upper portion of the pusher assembly in the middle;
  • the double stroller can be double-folded, and when the second fold is folded, the two side brackets located on the outer side respectively surround the first horizontal axis, the second horizontal axis, and the third horizontal axis The direction of the side bracket located in the middle is reversed.
  • first horizontal axis, the second horizontal axis, and the side of each side of the outer side of the cart frame when the double stroller is in a double folded state The third horizontal axis extends in the same straight line direction.
  • the first axle and the second axle on the two side brackets on the outer side both extend in the front-rear direction.
  • the first axle and the second axle on the side brackets located in the middle extend in the left-right direction.
  • the front bracket in the middle includes a front strut and a first front wheel joint and a second front wheel joint fixedly coupled to the front end portions of the front strut, respectively, the first front wheel joint
  • the front wheel assembly is rotatably connected to the second front wheel joint through the first axle, respectively, and the two front brackets on the outer side are rotatably connected to the front wheel through the first axle Component.
  • the rear wheel assembly is respectively connected to the left and right sides of the rear bracket located in the middle, when the double stroller is in a folded state, on the side bracket in the middle, on each side
  • the rear wheel assemblies are each located between the front wheel assembly on the same side and the intermediate side bracket.
  • one side of the two rear brackets located on the outer side is rotatably connected to the rear wheel assembly through the second axle, and the left and right sides of the rear bracket located in the middle respectively pass through The second axle is rotatably coupled to the rear wheel assembly.
  • the side brackets on the outer side each include a front bracket, a rear bracket, a pusher assembly, a side armrest, a front link, and a
  • the rear link, the side bracket in the middle includes one of the front bracket, one of the rear brackets, one of the push rod assemblies, one of the side armrests, two of the front links, and two of the Rear link.
  • the present invention has the following advantages over the prior art: the stroller/double stroller of the present invention has a simple structure, can be folded, is easy to fold, and has a folded stroller/double child.
  • the trolley is compact and small in size, making it easy to carry and store.
  • Figure 1 is a perspective view of the stroller of Embodiment 1 in an unfolded state
  • Figure 2 is a perspective view of the stroller of Embodiment 1 in an unfolded state
  • Figure 3 is a side elevational view of the stroller of Embodiment 1 in an unfolded state
  • Figure 4 is a perspective view of the stroller of Embodiment 1 during folding
  • Figure 5 is a perspective view of the stroller of the embodiment 1 during the folding process
  • Figure 6 is a perspective view of the stroller of Embodiment 1 in a folded state
  • Figure 7 is a side view of the stroller of Embodiment 1 in a folded state
  • Figure 8 is a perspective view of the stroller of Embodiment 2 in an unfolded state
  • Figure 9 is a perspective view of the stroller of Embodiment 2 during folding
  • Figure 10 is a perspective view of the stroller of Embodiment 2 in a folded state
  • Figure 11 is a side view of the stroller of Embodiment 2 in a folded state
  • Figure 12 is a perspective view showing the three-dimensional structure of the stroller of Embodiment 5 in an unfolded state
  • Figure 13 is a side elevational view of the stroller of embodiment 5 in an unfolded state
  • Figure 14 is a perspective view showing the three-dimensional structure of the stroller of the fifth embodiment when it is folded once;
  • Figure 15 is a perspective view showing the three-dimensional structure of the stroller of the fifth embodiment when it is folded once;
  • Figure 16 is a side elevational view of the child stroller of the embodiment 5 when the folding is completed;
  • Figure 17 is a front elevational view of the child stroller of the fifth embodiment when it is folded twice;
  • Figure 18 is a perspective view showing the three-dimensional structure of the stroller of the fifth embodiment when the second folding is completed;
  • Figure 19 is a front elevational view showing the completion of the secondary folding of the stroller of Embodiment 5;
  • Figure 20 is a perspective view of the double stroller of Embodiment 6 in an unfolded state
  • Figure 21 is a side elevational view of the double stroller of the embodiment 6 in an unfolded state
  • Figure 22 is a side elevational view of the double stroller of embodiment 6 during folding
  • Figure 23 is a front elevational view (one-folded state) of the double stroller of Embodiment 6 during folding;
  • Figure 24 is a perspective view (double-folded state) of the double stroller of Embodiment 6 in a folded state;
  • Figure 25 is a front view (secondary folded state) of the double stroller of Embodiment 6 in a folded state.
  • 106 a first left lever; 107, a first right lever; 108, a second left lever; 109, a second right lever; 110, a third left lever; 111, a third right lever.
  • the stroller of Embodiment 1 includes a cart frame having an unfolded state and a folded state, a front wheel assembly 21 disposed at a bottom front portion of the cart frame, and a cart disposed at the cart.
  • the rear wheel assembly 22 at the rear of the frame has a locking mechanism for locking the cart frame in the deployed state.
  • the cart frame includes side brackets 1 respectively located on the left and right sides of the stroller and cross braces connected between the side brackets 1 on the left and right sides.
  • the side brackets 1 on each side include a front bracket 11, a rear bracket 12, a push rod assembly 13, a side armrest 14, a front link 15, and a rear link 16.
  • the front wheel assembly 21 is rotatably coupled to the lower portion of the front bracket 11 by a first axle
  • the rear wheel assembly 22 is rotatably coupled to the lower portion of the rear bracket 12 by a second axle 32.
  • the upper portion of the front bracket 11 and the upper portion of the rear bracket 12 are rotatably coupled by a first side shaft 41, and the lower portion of the side armrest 14 passes at least one of the upper two parts of the front bracket 11 and the upper portion of the rear bracket 12 through the second side.
  • the shaft 42 is rotatably coupled.
  • the lower portion of the side armrest 14 and the upper portion of the rear bracket 12 are rotatably coupled by the second side shaft 42, as shown in FIG.
  • first side shaft 41 and the second The side shafts 42 extend in the same linear direction, that is, the upper portion of the front bracket 11, the upper portion of the rear bracket 12, and the lower three members of the side armrest 14 are rotatably connected by the same axis of the first side shaft 41 / the second side shaft 42, as shown in FIG. Shown.
  • the upper portion of the side armrest 14 is rotatably connected to the lower portion of the push rod assembly 13 via the third side shaft 43, and one end portion of the rear link 16 is rotatably connected to the lower portion of the push rod assembly 13 via the fourth side shaft 44, and the rear link 16 is connected.
  • the other end of the front link 15 is rotatably connected to the one end of the front link 15 via the fifth side shaft 45, and the rear link 16 and the rear bracket 12 are rotatably connected by the sixth side shaft 46.
  • the other end of the front link 15 is front and front.
  • the bracket 11 is rotatably coupled by a seventh side shaft 47.
  • the pusher assembly 13 includes a lower push rod 131 that extends obliquely from the front to the rear, and an upper push rod that is slidably disposed on the lower push rod 131 along the length extension direction of the lower push rod 131.
  • the upper portion of the side armrest 14 and the lower portion of the lower push rod 131 are rotatably connected by the third side shaft 43, and one end portion of the rear link 16 and the lower portion of the lower push rod 131 are rotatably connected by the fourth side shaft 44.
  • the lower push rod 131 has a hollow cavity extending along the length thereof, and the upper push rod 132 is inserted into the hollow cavity of the lower push rod 131 from the upper portion of the lower push rod 131, and the upper push rod 132 can be along The length of the hollow body slides up and down.
  • the pusher assembly 13 further includes a push handle including a first rod 133 and a second rod 134 that are fixedly coupled, the first rod 133 being fixedly coupled to the upper end of the upper push rod 132.
  • the seventh side shaft 47 is located below the first side shaft 41; on the rear bracket 12, the first side shaft 41 is located below the second side shaft 42, or The first side shaft 41 is disposed coaxially with the second side shaft 42 and the sixth side shaft 46 is located below the first side shaft 41.
  • the fourth side shaft 44 is located below the third side shaft 43. .
  • a first straight line 51 is formed between the first axle 31 and the axial connection of the first side axle 41, and the second axle 32 and the shaft of the first axle 41
  • a second straight line 52 is formed between the heart lines.
  • the angle between the first straight line 51 and the second straight line 52 is set to 95 to 150 degrees, and the first axle 31 and the second axle
  • the distance between the 32-axis connection is set to 400 ⁇ 500mm.
  • the angle between the first straight line 51 and the second straight line 52 is preferably 105 to 130 degrees.
  • the stroller can be folded once.
  • the side brackets 1 on each side are gathered in the height direction and the front-rear direction.
  • the front wheel assemblies 21 and the rear wheel assemblies 22 on both sides are in the left-right direction.
  • one of the two components of the first axle 31 and the second axle 32 is located on the outer side of the two components of the front wheel assembly 21 and the rear wheel assembly 22.
  • the front wheel assembly 21 and the rear wheel assembly 22 on each side are respectively located on the inner and outer sides of the side bracket 1 on the same side, and the first axle 31 and the second axle 32 are in the same straight line direction. extend.
  • the left and right rear wheel assemblies 22 are respectively rotatably connected to the outer side of the rear bracket 12, and in each of the left and right sides, the front wheel assembly 21 is located on the first side.
  • the rear wheel assembly 22 is located outside the first side shaft 41.
  • the stroller is also capable of secondary folding.
  • the cross brace includes a first cross bar 61, a second cross bar 62 and a third cross bar 63 connected between the side brackets 1 on the left and right sides, first The crossbar 61, the second crossbar 62, and the third crossbar 63 all extend in the left-right direction, and the left and right end portions of the first crossbar 61 are respectively rotatably connected to the front brackets 11 on the left and right sides through the first horizontal shaft 71.
  • the cross bracing bracket further includes a fourth crossbar 64.
  • the fourth crossbar 64 extends in the left-right direction, and the left and right ends of the fourth crossbar 64 are respectively The rear links 16 on the left and right sides are rotatably connected by a fourth horizontal shaft 74.
  • a unidirectional rotation limiting mechanism is disposed between the fourth crossbar 64 and the rear connecting rods 16 on the left and right sides.
  • the one-way rotation limiting mechanism can rotate the side brackets 1 on the left and right sides in only one direction. Can't turn in the other direction.
  • the side brackets 1 on both sides can respectively pass the first horizontal axis 71, the second horizontal axis 72, the third horizontal axis 73, and the fourth horizontal axis 74 to the stroller.
  • the inside folds and folds so that the stroller is folded to a smaller volume.
  • the front wheel assembly 21 and the rear wheel assembly 22 on both sides are arranged side by side in the front-rear direction, and in each side of the stroller, the first axle 31 and the second axle 32 are two One of the components located on the inner side is located within the contour of one of the two components of the front wheel assembly 21 and the rear wheel assembly 22.
  • the locking mechanism includes a first locking mechanism disposed between the upper push rod 132 and the lower push rod 131 and a second locking mechanism disposed between the two members of the two four-bar linkages rotatably connected to each other, A locking mechanism and a second locking mechanism may be separately unlocked, or the second locking mechanism may be activated to unlock the second locking mechanism when the upper push rod 132 slides downward relative to the lower push rod 131 after the first locking mechanism is unlocked.
  • the specific structures of the first locking mechanism and the second locking mechanism are not the technical points to be protected by the patent, and the structures in the prior art can be employed.
  • the first locking mechanism and the second locking mechanism are both in a locked state, and an angle between 95 and 150 degrees is formed between the first straight line 51 and the second straight line 52, the first axle
  • the distance between the 31 and the axial connection of the second axle 32 is maintained at 400 to 500 mm, and the first rod 133 and the third rail 63 extend in the same linear direction, as shown in FIGS. 1 to 3.
  • the folding is first performed.
  • the first locking mechanism is first unlocked, and the upper push rod 132 is slid downward by a distance along the length extending direction of the lower push rod 131 to make the second locking mechanism. Unlocking, then pushing the push rod assembly 13 forward so that the side armrest 14 is turned down about the second side shaft 42 and the rear bracket 12 is closed, and the front bracket 11 and the rear link 16 drive the front bracket 11 around the first side shaft 41.
  • the rear bracket 12 is folded backwards until the rods constituting the side bracket 1 are closely brought together, and the front wheel assemblies 21 on the left and right sides are respectively received inside the side brackets 1 on each side, and the rear wheel assemblies 22 are respectively located.
  • the outer side of the side bracket 1 on each side, preferably the first axle 31 and the second axle 32 extend in the same linear direction, and thus the folding is completed once, and the folded structure is as shown in FIG. 5, at this time, the first rod 133 and the third rod
  • the cross bar 63 still extends in the same linear direction, and the distance between the lower one of the two members of the first axle 31 and the second axle 32 and the upper end surface of the push rod assembly 13 is 230 to 330 mm.
  • the second folding is performed, and when the second folding is performed, the side brackets 1 on both sides are turned around the first horizontal axis 71, the second horizontal axis 72, the third horizontal axis 73, and the fourth horizontal axis 74 toward the inside of the stroller.
  • the front wheel assembly 21 is located on the rear side of the side bracket 1
  • the rear wheel assembly 22 is located on the front side of the side bracket 1
  • the third horizontal axis 73 and the fourth horizontal axis 74 extend in the same linear direction.
  • the first rod 133 is perpendicular to the third cross bar 63.
  • One of the two components of the first axle 31 and the second axle 32 is located below.
  • the distance from the upper end face of the pusher assembly 13 is the same as that after one fold.
  • the stroller is compact and compact, and is easy to carry and store.
  • the rear wheel assemblies 22 on the left and right sides are respectively rotatably connected to the inner side of the rear bracket 12, and in each of the left and right sides, the front wheel assembly 21 is located on the first side.
  • the rear wheel assembly 22 is located inside the first side shaft 41.
  • the front and rear wheel assemblies 21 on the left and right sides are respectively received on the outer side of the side bracket 1 on each side, and the rear wheel assembly 22 is respectively located on the inner side of the side bracket 1 on each side, as shown in FIG. Show.
  • the front wheel assembly 21 is located on the front side of the side bracket 1
  • the rear wheel assembly 22 is located on the rear side of the side bracket 1, as shown in FIG. 10, except for the difference, the rest and the embodiment 1 the same.
  • the cross brace includes a first cross bar 61, a second cross bar 62, and a third cross bar 63.
  • the first cross bar 61, the second cross bar 62, and the third cross bar 63 all extend in the left and right direction.
  • the first crossbar 61 is connected between the front brackets 11 on the left and right sides
  • the second crossbar 62 is connected between the rear brackets 12 on the left and right sides
  • the third crossbar 63 is connected to the first poles 133 on the left and right sides.
  • Each of the first rail 61, the second rail 62, and the third rail 63 is a telescopic rod that can expand and contract in the left-right direction.
  • the cross brace further includes a fourth cross bar 64, the fourth cross bar 64 extends in the left and right direction, and the fourth cross bar 64 is connected to the left and right sides.
  • the fourth crossbar 64 is also a telescopic rod that can expand and contract in the left-right direction. The rest is the same as in the first embodiment.
  • the side brackets 1 on the left and right sides are respectively pushed toward the inner side of the stroller, and the first crossbar 61, the second crossbar 62, the third crossbar 63, and the fourth crossbar 64 are contracted.
  • the side brackets 1 on both sides are brought together to realize the lateral folding of the stroller.
  • the front and rear wheel assemblies 2 on the left and right sides are respectively received inside the side brackets 1 on each side, and the rear wheel assembly 22 is respectively They are located on the outer side of the side bracket 1 on each side.
  • the cross brace includes a first cross bar 61, a second cross bar 62, and a third cross bar 63.
  • the first cross bar 61, the second cross bar 62, and the third cross bar 63 all extend in the left and right direction.
  • the first crossbar 61 is connected between the front brackets 11 on the left and right sides
  • the second crossbar 62 is connected between the rear brackets 12 on the left and right sides
  • the third crossbar 63 is connected to the first poles 133 on the left and right sides.
  • Each of the first rail 61, the second rail 62, and the third rail 63 is a telescopic rod that can expand and contract in the left-right direction.
  • the cross brace further includes a fourth cross bar 64, the fourth cross bar 64 extends in the left and right direction, and the fourth cross bar 64 is connected to the left and right sides. Between the links 16, the fourth crossbar 64 is also a telescopic rod that can expand and contract in the left-right direction. The rest is the same as in Embodiment 2.
  • the side brackets 1 on the left and right sides are respectively pushed toward the inner side of the stroller, and the first crossbar 61, the second crossbar 62, the third crossbar 63, and the fourth crossbar 64 are contracted.
  • the side brackets 1 on both sides are brought together to realize the lateral folding of the stroller.
  • the front and rear wheel assemblies 2 on the left and right sides are respectively received on the outer side of the side bracket 1 on each side, and the rear wheel assembly 22 is respectively They are located on the inner side of the side bracket 1 on each side.
  • a stroller of the present embodiment includes a frame having an unfolded state and a folded state, a front wheel assembly 21 disposed at a front portion of the lower portion of the frame, and a rear portion disposed under the frame.
  • the frame includes two side brackets 1 respectively located on the left and right sides, and a cross bracing bracket connected between the two side brackets 1 and capable of expanding and contracting in the left and right direction.
  • the side bracket 1 includes a front bracket 11 connected to the front wheel assembly 21 at a lower portion, a rear bracket 12 connected to the lower rear wheel assembly 22, a push rod assembly 13, a side armrest 14, a front link 15, a rear link 16, and a seat. Rod 7 and sliding sleeve 8.
  • the push rod assembly 13 includes an upper push rod 132 and a lower push rod 131 that are slidably coupled to each other.
  • the upper push rod 132 and the lower push rod 131 are disposed one above the other.
  • the lower push rod 131 has an inner hollow structure, and the upper push rod 132 is inserted into the lower push rod 131 from the upper portion of the lower push rod 131 and can slide up and down along the length extension direction of the lower push rod 131.
  • the front bracket 11 and the rear bracket 12 are disposed one after the other. Two of the three components of the front bracket 11, the rear bracket 12 and the side armrest 14 are pivotally connected by a rotating shaft, and the third component is pivoted with at least one of the two components through a rotating shaft. Axis connection.
  • the side support 14 is also pivotally connected to the push rod assembly 13 through the second shaft 1012, and the rear link 16 and the lower push rod 131 are pivotally connected by the third shaft 1013, the rear link 16 and the rear
  • the bracket 12 is pivotally connected by a fourth shaft 1014, the front link 15 and the front bracket 11 are pivotally connected by a fifth shaft 1015, and the front link 15 and the rear link 16 are pivoted through the sixth shaft 1016.
  • a shaft connection when the frame is in an unfolded state, a rotation shaft for connecting between any two of the front bracket 11, the rear bracket 12 and the side armrest 14 is located at the second shaft 1012 and for the fifth shaft The rear of the 1015 connection.
  • the three components of the front bracket 11, the rear bracket 12 and the side armrest 14 are pivotally connected by two phases of the same rotating shaft.
  • the same rotating shaft is the first shaft 1011
  • the upper portion of the front bracket 11, the upper portion of the rear bracket 12, and the lower portion of the side armrest 14 are pivotally coupled to each other by the first shaft 1011.
  • the upper portion of the side armrest 14 and the lower portion of the lower push rod 131 are pivotally connected by a second shaft 1012.
  • the upper portion of the rear link 16 and the lower portion of the lower push rod 131 are pivotally connected by a third shaft 1013, and the rear link 16 is pivotally coupled to the rear bracket 12 via a fourth shaft 1014.
  • the front portion of the front link 15 is pivotally coupled to the front bracket 11 via a fifth shaft 1015, and the rear portion of the front link 15 is pivotally coupled to the front portion of the rear link 16 via a sixth shaft 1016.
  • the sliding sleeve 8 is pivotally connected to the central portion of the side armrest 14 via a seventh shaft 1017.
  • the seat post 7 is disposed in the sliding sleeve 8 and the rear portion thereof and the rear connecting rod 16 are pivoted through the eighth shaft 1018. In connection, the seatpost 7 is slidable within the sliding sleeve 8.
  • the lower push rod 131, the side armrest 14, the rear bracket 12 and the rear link 16 constitute a first four-bar linkage mechanism, and the front bracket 11, the rear bracket 12, the front link 15 and the rear link 16 constitute a second fourth Linkage.
  • the side armrest 14, the lower push rod 131, the rear link 16, the seat post 7, and the sliding sleeve 8 constitute a crank slider mechanism.
  • the second shaft 1012 is located above the third shaft 1013 on the lower push rod 131, and the fourth shaft 1014 is located below the first shaft 11 and behind the sixth shaft 1016.
  • the seventh shaft 1017 is located between the first shaft 1011 and the second shaft 1012 on the side armrest 14, and the eighth shaft 1018 is located between the third shaft 1013 and the fourth shaft 1014 on the rear link 16.
  • the locking mechanism includes a first locking member for locking the upper push rod 132 and the lower push rod 131 to each other and a second locking member for locking the lower push rod 131 and the rear link 16 to each other.
  • the cross brace includes a first cross bar 103 disposed between the two push rod assemblies 13 , a second cross bar 104 disposed between the two front brackets 11 , and a first set between the two rear brackets 12 Three crossbars 105.
  • the first crossbar 103 includes a first left lever 106 and a first right lever 107 that are fixedly coupled to the two push rod assemblies 13, respectively, and the first left lever 106 and the first right lever 107 are slidably coupled to each other;
  • the second crossbar 104 includes a second left lever 108 and a second right lever 109 that are fixedly coupled to the two front brackets 11, respectively, and the second left lever 108 and the second right lever 109 are slidably coupled to each other;
  • the rod 105 includes a third left rod 110 and a third right rod 111 that are fixedly coupled to the two rear brackets 12, respectively, and the third left rod 110 and the third right rod 111 are slidably coupled to each other.
  • the front bracket 11 and the rear bracket 12 are mutually extended to form a herringbone shape.
  • the side armrests 14 are deployed above the front bracket 11 and the rear bracket 12, which are located forward of the push rod assembly 13 and the rear link 16.
  • the front link 15 is located below the front bracket 11 and the rear bracket 12 and extends in the front-rear direction.
  • the rear link 16 is J-shaped, and the sixth shaft 1016 is located below the front bracket 11 and the rear bracket 12.
  • the seat post 7 stands between the side armrest 14 and the rear link 16 and extends in the front-rear direction.
  • the first shaft 1011 is located behind the line connecting the second shaft 1012 and the fifth shaft 1015. Meanwhile, the first left lever 106 and the first right lever 107, the second left lever 108 and the second right lever 109, and the third left lever 110 and the third right lever 111 are all slid away from each other to keep the two side brackets away from each other. Expand.
  • the folding of the frame requires two folding operations. First, the folding of the two side brackets 1 is performed by one folding operation, and the respective folding of the two side brackets 1 is completed simultaneously. Then, by folding the bracket by the secondary folding operation, the folding of the two side brackets 1 to each other is performed.
  • the first locking member is operated to unlock, and the upper pushing rod 132 is driven to slide downward, when the lower end of the lower pushing rod 131 reaches the second locking member.
  • the lower push rod 131 triggers the second lock to unlock.
  • the frame is completely unlocked, and any of the rods driving the first four-bar linkage can drive the other rods to close together.
  • the operating push rod assembly 13 moves downwardly to the rear bracket 12, and the side armrest 14 and the rear connecting rod 16 move downward together with the rear bracket 12 under the action of the first four-bar linkage mechanism. fold.
  • the front bracket 11 and the front connecting rod 15 are interlocked with the rear bracket 12 and the rear connecting rod 16 under the action of the second four-bar linkage mechanism, and the front bracket 11 and the front connecting rod 15 and the rear bracket 12 and the rear connecting rod 16 are folded closer together.
  • the seat post 7 slides downward by the action of the crank slider mechanism and rotates rearwardly to be folded closer to the push rod assembly 13. As shown in Figures 15 and 16, the frame is folded once.
  • the first left rod 106 and the first right rod 107, the second left rod 108 and the second right rod 109, and the third left rod 110 and the third right rod 111 are mutually Sliding close causes the two side brackets 1 to close together.
  • first shaft 1011 is located behind the line connecting the second shaft 1012 and the fifth shaft 1015. This can further ensure that the gaps between the rods of the side bracket 1 after folding are small, the overall frame is flat and the volume is small.
  • the stroller described in this embodiment is flat and neat after being folded, has a small volume, and is convenient for transportation and carrying.
  • the frame can be folded up and down and folded laterally to the left and right.
  • the center of gravity of the folded frame is stable and the center of gravity line supports the stroller through the support points of the front wheel assembly 101 and the rear wheel assembly 102 to enable the stroller to stand on the ground.
  • the double stroller of the present embodiment includes a cart frame having an unfolded state and a folded state, a front wheel assembly 21 disposed at a bottom front portion of the cart frame, and a cart disposed at the cart.
  • the cart frame includes three side brackets 1 which are respectively arranged side by side in the left and right direction, and a cross bracket which is respectively connected between the adjacent two side brackets 1.
  • Each side bracket 1 includes a front bracket 11, a rear bracket 12, a push rod assembly 13, a side armrest 14, a front link 15, and a rear link 16.
  • the front wheel assembly 21 is rotatably coupled to the lower portion of the front bracket 11 by a first axle
  • the rear wheel assembly 22 is rotatably coupled to the lower portion of the rear bracket 12 by a second axle 32.
  • the upper portion of the front bracket 11 and the upper portion of the rear bracket 12 are rotatably coupled by a first side shaft 41, and the lower portion of the side armrest 14 passes at least one of the upper two parts of the front bracket 11 and the upper portion of the rear bracket 12 through the second side.
  • the shaft 42 is rotatably coupled.
  • the lower portion of the side armrest 14 and the upper portion of the rear bracket 12 are rotatably coupled by the second side shaft 42, as shown in FIG.
  • first side shaft 41 and the second The side shafts 42 extend in the same linear direction, that is, the upper portion of the front bracket 11, the upper portion of the rear bracket 12, and the lower three members of the side armrest 14 are rotationally coupled by the first side shaft 41 / the second side shaft 42 in the same axis.
  • the upper portion of the side armrest 14 is rotatably connected to the lower portion of the push rod assembly 13 via the third side shaft 43, and one end portion of the rear link 16 is rotatably connected to the lower portion of the push rod assembly 13 via the fourth side shaft 44, and the rear link 16 is connected.
  • the other end of the front link 15 is rotatably connected to the one end of the front link 15 via the fifth side shaft 45, and the rear link 16 and the rear bracket 12 are rotatably connected by the sixth side shaft 46.
  • the other end of the front link 15 is front and front.
  • the bracket 11 is rotatably coupled by a seventh side shaft 47.
  • the push rod assembly 13 includes a lower push rod 131 that extends obliquely from the front to the rear, an upper push rod 132 that is slidably disposed on the lower push rod 131 along the length extension direction of the lower push rod 131, and upper and lower push rods of the side armrest 14
  • the lower portion of the 131 is rotatably coupled by the third side shaft 43, and one end of the rear link 16 is rotatably coupled to the lower portion of the lower push rod 131 via the fourth side shaft 44.
  • the lower push rod 131 has a hollow cavity extending along the length thereof, and the upper push rod 132 is inserted into the hollow cavity of the lower push rod 131 from the upper portion of the lower push rod 131, and the upper push rod 132 can be along The length of the hollow body slides up and down.
  • the seventh side shaft 47 is located below the first side shaft 41; on the rear bracket 12, the first side shaft 41 is located below the second side shaft 42 Alternatively, the first side shaft 41 is disposed coaxially with the second side shaft 42 and the sixth side shaft 46 is located below the first side shaft 41; on the push rod assembly 13, the fourth side shaft 44 is located at the third side shaft 43 Below.
  • a first straight line 51 is formed between the first axle 31 and the axial connection of the first side shaft 41
  • a second line 32 is formed between the second axle 32 and the axial connection of the first side axle 41.
  • the second straight line 52 when the double stroller is in the unfolded state, the angle between the first straight line 51 and the second straight line 52 is 95-150 degrees, and the first axle 31 is connected to the axial center of the second axle 32.
  • the distance between the two is 400 ⁇ 500mm.
  • the angle between the first straight line 51 and the second straight line 52 is preferably 105 to 130 degrees.
  • the two side brackets 1 located on the outer side each include a front bracket 11, a rear bracket 12, a push rod assembly 13, a side armrest 14, a front link 15, and a rear link 16 in the middle.
  • the side bracket 1 includes a front bracket 11, a rear bracket 12, a push rod assembly 13, a side armrest 14, two front links 15, and two rear links 16.
  • the two front brackets 11 on the outer side are identical in structure, and a front wheel assembly 21 is rotatably coupled to a lower portion of each of the front brackets 11, and a front bracket 11 in the middle includes a front branch extending obliquely from the front to the rear.
  • the rod 111 is fixed to the first front wheel joint 112 and the second front wheel joint 113 respectively connected to the front end portion of the front strut 111, and the front strut 111, the first front wheel joint 112 and the second front wheel joint 113 form a Y character.
  • the front portion of the first front wheel joint 112 and the second front wheel joint 113 are rotatably connected to the front wheel assembly 21 via the first axle 31, respectively, and the rear portion of the front support rod 111 and the upper portion of the rear bracket 12 pass through the first portion.
  • the side shafts 41 are rotatably connected.
  • the left and right sides of the lower portion of the rear rear bracket 12 are rotatably coupled to the rear wheel assembly 22 via the second axle 32, and one of the left and right sides of the lower portion of each of the outer rear brackets 12 passes through the second axle 32.
  • a rear wheel assembly 22 is rotatably coupled. With such a configuration, the double stroller can be displaced from the front wheel assembly 21 and the rear wheel assembly 22 on the intermediate side bracket 1 when folded.
  • the two rear wheel assemblies 22 on the outer side are respectively rotatably coupled to the outer side of the rear bracket 12, and in each side of the outer side, the front wheel assembly 21 is located at the first side shaft 41.
  • the rear wheel assembly 22 is located outside the first side shaft 41.
  • the cross brace includes a first cross bar 61, a second cross bar 62 and a third cross bar 63.
  • the first cross bar 61, the second cross bar 62 and the third cross bar 63 all extend in the left and right direction of the double stroller. .
  • One end portion of the first crossbar 61 is rotatably connected to the front bracket 11 on one of the outer side sides via the first horizontal shaft 71, and the other end portion of the first crossbar 61 is fixedly coupled to the intermediate front bracket 11.
  • One end of the second crossbar 62 is rotatably coupled to the rear bracket 12 on one of the outer sides, and the other end of the second crossbar 62 is fixedly coupled to the intermediate rear bracket 12.
  • the cross brace preferably further includes a fourth cross bar 64 extending along the left and right direction of the double stroller, the fourth cross bar 64
  • the rear link 16 on one side of the one end portion and the outer side is rotatably connected by the fourth horizontal shaft 74, and the other end portion of the fourth cross bar 64 is fixedly coupled to one of the two rear rear links 16, respectively.
  • a one-way rotation limiting mechanism is disposed between one end of the rod 64 and the rear link 16 , and the two side brackets 1 located on the outer side can only rotate in one direction by the one-way rotation limiting mechanism, and cannot Turn in the other direction.
  • the specific structure of each one-way rotation limiting mechanism is not the gist of the present invention, and the structure in the prior art can be employed.
  • the two side brackets 1 located on the outer side can respectively be wound around the first side.
  • the horizontal axis 71, the second horizontal axis 72, the third horizontal axis 73, and the fourth horizontal axis 74 are reversely folded in the direction of the intermediate side bracket 1 to be folded twice to reduce the width in the left-right direction of the stroller, thereby making the double The stroller is smaller when folded.
  • Locking mechanisms are respectively disposed on each side bracket 1.
  • the locking mechanism includes a first locking mechanism disposed between the upper push rod 132 and the lower push rod 131 and any phase of the two four-bar linkage mechanisms disposed above Rotating the second locking mechanism between the two connected components, the first locking mechanism and the second locking mechanism may be separately unlocked, or the upper push rod 132 may slide downward relative to the lower push rod 131 after the first locking mechanism is unlocked The second locking mechanism is triggered to unlock the second locking mechanism.
  • the specific structures of the first locking mechanism and the second locking mechanism are not the technical points to be protected by the patent, and the structures in the prior art can be employed.
  • first locking mechanism and the second locking mechanism are both in a locked state, and an angle between 95 and 150 degrees is formed between the first straight line 51 and the second straight line 52, first The distance between the axle line 31 and the shaft center line of the second axle 32 is maintained at 400 to 500 mm, and both the first axle 31 and the second axle 32 extend in the left-right direction as shown in FIGS. 20 and 21.
  • the folding is first performed to unlock the first locking mechanism, and the upper pushing rod 132 is slid downward by a distance along the length extending direction of the lower pushing rod 131, so that the second locking mechanism is unlocked, and then
  • the front pusher assembly 13 is turned over so that the side armrest 14 is turned down about the second side shaft 42 to be close to the rear bracket 12, and the front bracket 15 and the rear link 16 drive the front bracket 11 to be turned backward around the first side shaft 41.
  • the rear brackets 12 are brought closer together until the rods constituting the side brackets 1 are closely brought together, and thus the folding is completed once, and the folded structure is as shown in FIG.
  • the first axle 31 and the second axle 32 still extend in the left-right direction; in each of the outer two sides, the front wheel assemblies 21 are respectively received inside the side brackets 1, and the rear wheel assemblies 22 are respectively located at the side brackets.
  • the front wheel assemblies 21 are respectively located on the left and right sides of the intermediate side brackets 1, and the rear wheel assemblies 22 are also respectively located on the left and right sides of the intermediate side brackets 1, and the rear wheel assemblies 22 on each side are respectively Located between the front wheel assembly 21 and the intermediate side bracket 1.
  • the second folding is performed so that the side brackets 1 on both sides are folded and folded toward the intermediate side bracket 1 around the first horizontal axis 71, the second horizontal axis 72, the third horizontal axis 73, and the fourth horizontal axis 74, respectively, and finally folded.
  • the first horizontal axis 71, the second horizontal axis 72, the third horizontal axis 73, and the fourth horizontal axis 74 extend in the same linear direction on the two side brackets 1 on the outer side.
  • the first axle 31 and the second axle 32 both extend in the front-rear direction, and the states of the front wheel assembly 21 and the rear wheel assembly 22 on the intermediate side bracket 1 are the same as those in the first folding, the first axle 31 and the second axle 32 still extends in the left and right direction.
  • the folded double stroller is compact and small enough to be carried and stored.
  • the outer two rear wheel assemblies 22 are respectively rotatably coupled to the inner side of the rear bracket 12, and in each side of the outer side, the front wheel assembly 21 is located at the first side axle 41. On the outside, the rear wheel assembly 22 is located inside the first side shaft 41.
  • the outer front wheel assemblies 21 are respectively received on the outer sides of the side brackets 1 on each side, and the corresponding rear wheel assemblies 22 are respectively located on the inner sides of the side brackets 1 on each side, except The rest is the same as in the sixth embodiment except for the difference.

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  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)

Abstract

一种儿童推车，包括推车车架，推车车架包括侧支架（1）和横撑支架，侧支架包括前支架（11）、后支架（12）、推杆组件（13）、侧扶手（14）、前连杆（15）和后连杆（16），前轮组件（21）通过第一轮轴（31）转动设在前支架上，后轮组件（22）通过第二轮轴（32）转动设在后支架上，前支架与后支架转动连接，侧扶手至少与前支架和后支架两个部件中的一个部件以及推杆组件转动连接，后连杆分别与推杆组件、后支架和前连杆转动连接，前连杆与前支架转动连接，儿童推车可一次折叠，在一次折叠状态下，两侧的前轮组件和后轮组件均沿左右方向并排设置，每一侧的第一轮轴和第二轮轴两个中位于内侧的一个部件位于前轮组件和后轮组件两个中位于外侧的一个部件的轮廓内。该儿童推车折叠后结构紧凑，体积小。

Description

儿童推车 相关申请的交叉引用
本 PCT 申请是以申请号为 CN201710753536.4 ，申请日为 2017 年 8 月 29 日的中国专利申请，申请号为 CN201710753477.0 ，申请日为 2017 年 8 月 29 日的中国专利申请，申请号为 CN201721088136.8 ，申请日为 2017 年 8 月 29 日的中国专利申请，以及申请号为 CN201721088098.6 ，申请日为 2017 年 8 月 29 日的中国专利申请为基础，并主张这些中国专利申请的优先权，该些中国专利申请的公开内容在此作为整体引入本申请中。
技术领域
本发明涉及儿童用品技术领域，具体涉及一种儿童推车。
背景技术
现有技术中的儿童推车，包括具有展开位置与折叠位置的推车车架、设置于推车车架的底部的前轮组件和后轮组件、用于将推车车架锁定于展开状态下的锁定机构。现有的儿童推车种类繁多，推车车架杆件的数目不同，各杆件之间的连接位置不同，从而折叠原理与折叠方式各不相同，折叠后的效果也不同。目前，市场上存在的儿童推车，大多存在杆件数量多、折叠后结构尺寸大等缺点，生产成本较高，日常的存放与携带也很不方便。
发明内容
有鉴于此，本发明的目的是针对现有技术的不足，提供一种能够折叠、且折叠后体积较小的儿童推车。
作为一个方面，为达到上述目的，本发明采用的技术方案是：
一种儿童推车，包括具有展开状态和折叠状态的推车车架、设置在所述推车车架的下方前部的前轮组件、设置在所述推车车架的下方后部的后轮组件和用于将所述推车车架锁定在展开的锁定机构，其中：
所述推车车架包括分别位于左右两侧的侧支架、连接在左右两侧的所述侧支架之间的横撑支架，每侧的所述侧支架均包括前支架、后支架、推杆组件、侧扶手、前连杆和后连杆，所述前轮组件通过第一轮轴转动地设置在所述前支架的下部，所述后轮组件通过第二轮轴转动地设置在所述后支架的下部；
所述前支架的上部与所述后支架的上部相转动连接，所述侧扶手的下部至少与所述前支架的上部和所述后支架的上部两个部件中的一个部件相转动连接，所述侧扶手的上部与所述推杆组件的下部相转动连接，所述后连杆的一端部与所述推杆组件的下部相转动连接，所述后连杆的另一端部与所述前连杆的一端部相转动连接，所述后连杆与所述后支架相转动连接，所述前连杆的另一端部与所述前支架相转动连接；
所述儿童推车至少能够进行一次折叠，当所述儿童推车进行一次折叠时，所述推杆组件向前翻转带动所述侧扶手向下翻转与所述后支架靠拢，通过所述前连杆和所述后连杆带动所述前支架向后翻转与所述后支架靠拢，当所述儿童推车处于一次折叠状态时，两侧的所述前轮组件和所述后轮组件均沿左右方向并排设置，当所述儿童推车处于一次折叠状态时，所述儿童推车左右两侧的每一侧中，所述第一轮轴和所述第二轮轴两个部件中位于内侧的一个部件位于所述前轮组件和所述后轮组件两个部件中位于外侧的一个部件的轮廓内。
在一些实施例中，当所述儿童推车处于一次折叠状态时，所述第一轮轴和所述第二轮轴沿同一直线方向延伸。
在一些实施例中，当所述儿童推车处于一次折叠状态时，每侧的所述前轮组件和所述后轮组件分别位于同一侧的所述侧支架的内外两侧。
在一些具体的实施例中，所述前支架的上部与所述后支架的上部通过第一侧轴相转动连接，当所述儿童推车处于展开状态时，左右两侧的所述后轮组件分别转动连接在所述后支架的外侧，且左右两侧的每侧中，所述前轮组件均位于所述第一侧轴的内侧，所述后轮组件均位于所述第一侧轴的外侧。
在一些具体的实施例中，所述前支架的上部与所述后支架的上部通过第一侧轴相转动连接，当所述儿童推车处于展开状态时，左右两侧的所述后轮组件分别转动连接在所述后支架的内侧，且左右两侧的每侧中，所述前轮组件均位于所述第一侧轴的外侧，所述后轮组件均位于所述第一侧轴的内侧。
在一些实施例中，所述第一轮轴与所述第一侧轴的轴心连线之间形成第一直线，所述第二轮轴与所述第一侧轴的轴心连线之间形成第二直线，当儿童推车处于展开状态时，所述第一直线与所述第二直线之间的夹角为95~150度，所述第一轮轴与所述第二轮轴的轴心连线之间的距离为400~500mm。
在又一些更具体的实施例中，当儿童推车处于展开状态时，所述第一直线与所述第二直线之间的夹角为105~130度。
作为一个具体的方面，当所述儿童推车处于一次折叠状态时，所述第一轮轴和所述第二轮轴两个部件中位于下方的一个部件与所述推杆组件的上端面之间的距离为230~330mm。
在一些具体实施例中，所述儿童推车还能够进行二次折叠，当所述儿童推车处于二次折叠状态时，两侧的所述前轮组件和所述后轮组件均沿前后方向并排设置，所述儿童推车的每一侧中，所述第一轮轴和所述第二轮轴两个部件中位于内侧的一个部件位于所述前轮组件和所述后轮组件两个部件中位于外侧的一个部件的轮廓内。
在一些实施例中，所述横撑支架包括：
第一横杆，所述第一横杆沿左右方向延伸，所述第一横杆的左右两端部分别与左右两侧的所述前支架通过第一横轴相转动连接；
第二横杆，所述第二横杆沿左右方向延伸，所述第二横杆的左右两端部分别与左右两侧的所述后支架通过第二横轴相转动连接；
第三横杆，所述第三横杆沿左右方向延伸，所述第三横杆的左右两端部分别与左右两侧的所述推杆组件通过第三横轴相转动连接；
当所述儿童推车二次折叠时，两侧的所述侧支架分别绕所述第一横轴、所述第二横轴和所述第三横轴向所述儿童推车的内侧翻转。
更进一步地，当所述儿童推车处于二次折叠状态时，位于所述推车车架的左右两侧的每侧的所述第一横轴、所述第二横轴和所述第三横轴均沿同一直线方向延伸。
在一些实施例中，所述推杆组件包括下推杆和能够沿所述下推杆的长度延伸方向滑动地设置在所述下推杆上的上推杆，所述侧扶手的上部和所述后连杆的一端部分别与所述下推杆的下部相转动连接。
在一些具体实施例中，所述推杆组件包括下推杆、上推杆和推把，所述推把包括相固定连接的第一杆和第二杆，所述第一杆与所述上推杆的上端部相固定连接，当所述儿童推车处于展开状态时，所述第一杆与所述第三横杆沿同一直线方向延伸，当所述儿童推车处于二次折叠状态时，所述第一杆与所述第三横杆相垂直。
在另一些实施例中，所述横撑支架包括：
第一横杆，所述第一横杆沿左右方向延伸，所述第一横杆能够沿左右方向伸缩地连接在左右两侧的所述前支架之间；
第二横杆，所述第二横杆沿左右方向延伸，所述第二横杆能够沿左右方向伸缩地连接在左右两侧的所述后支架之间；
第三横杆，所述第三横杆沿左右方向延伸，所述第三横杆能够沿左右方向伸缩地连接在与左右两侧的所述推杆组件之间；
所述儿童推车能够进行二次折叠，所述儿童推车二次折叠时，所述第一横杆、所述第二横杆和所述第三横杆收缩，两侧的所述侧支架沿左右方向靠拢。
在另一些具体实施例中，所述前支架的上部与所述后支架的上部通过一转轴相枢轴连接，所述侧扶手的下部至少与所述前支架的上部和所述后支架的上部两个部件中的一个部件通过一转轴相枢轴连接，所述侧扶手的上部与所述推杆组件的下部通过第二轴相枢轴连接，所述后连杆与推杆组件的下部通过第三轴相枢轴连接，所述后连杆与后支架通过第四轴相枢轴连接，所述前连杆与前支架通过第五轴向枢轴连接，所述前连杆与后连杆通过第六轴相枢轴连接，当所述车架处于展开状态时，用于连接所述前支架、后支架和侧扶手中的任意两个部件之间的转轴位于第二轴与第五轴连线的后方。
由于上述技术方案运用，本发明与现有技术相比具有下列优点：侧支架中用于连接所述前支架、后支架和侧扶手中的任意两个部件之间的转轴位于第二轴与第五轴连线的后方，使折叠后的车架整体扁平工整，体积足够小，方便运输携带。
在另一些实施例中，所述前支架、后支架和侧扶手三个部件通过同一转轴相枢轴连接，所述同一转轴为第一轴，所述推杆组件、侧扶手、后支架和后连杆构成第一四连杆机构，所述前支架、后支架、前连杆和后连杆构成第二四连杆机构，当所述车架折叠时，驱动第一四连杆机构中的任一杆件均能带动其他杆件与其靠拢收折，同时第一四连杆机构中的后支架和后连杆运动带动第二四连杆机构中的前支架和前连杆联动，前支架和前连杆与后支架和后连杆靠拢收折。
在另一些实施例中，所述推杆组件包括相互滑动连接的上推杆和下推杆，所述上推杆和下推杆一上一下设置，所述侧扶手和后连杆均是与推杆组件中的下推杆枢轴连接，所述前支架的上部、后支架的上部和侧扶手的下部通过第一轴相互枢轴连接，所述侧扶手的上部与下推杆的下部通过第二轴枢轴连接，所述后连杆的上部与下推杆的下部通过第三轴枢轴连接，所述后连杆通过第四轴与后支架枢轴连接，所述前连杆的前部与前支架通过第五轴枢轴连接，所述前连杆的后部与后连杆的前部通过第六轴枢轴连接，当所述车架处于展开状态时，所述第一轴位于所述第二轴和第五轴的连线的后方。
在另一些实施例中，所述第二轴在下推杆上位于第三轴的上方，所述第四轴位于第一轴的下方且位于第六轴的后方。
在一些实施例中，所述侧支架还包括座杆和滑套，所述滑套通过第七轴与侧扶手枢轴连接，所述座杆穿设在所述滑套内且其后部与后连杆通过第八轴枢轴连接，所述座杆能够在滑套内滑动。
在一些实施例中，所述第七轴在侧扶手上位于第一轴和第二轴之间，所述第八轴在后连杆上位于第三轴和第四轴之间，当所述车架处于展开状态时，所述侧扶手位于推杆组件和后连杆的前方，所述座杆立在侧扶手和后连杆之间且沿前后方向延伸；当所述车架折叠时，所述座杆随侧扶手和后连杆联动与推杆组件靠拢收折。
作为另一个方面，本发明还提供一种儿童推车，具体为双人儿童推车，包括具有展开状态和折叠状态的推车车架、设置在所述推车车架的下方前部的前轮组件、设置在所述推车车架的下方后部的后轮组件和用于将所述推车车架锁定在展开的锁定机构，其中：所述推车车架包括位于前述的位于左右两侧的侧支架以及位于中间的侧支架。
更具体地，所述推车车架包括沿左右方向依次并排设置的三个侧支架、分别连接在相邻两个所述侧支架之间的横撑支架，每个所述侧支架均包括前支架、后支架、推杆组件、侧扶手、前连杆和后连杆，所述前轮组件通过第一轮轴转动地设置在所述前支架的下部，所述后轮组件通过第二轮轴转动地设置在所述后支架的下部，所述前支架的上部与所述后支架的上部通过第一侧轴相转动连接，所述侧扶手的下部至少与所述前支架的上部和所述后支架的上部两个部件中的一个部件相转动连接，所述侧扶手的上部与所述推杆组件的下部相转动连接，所述后连杆的一端部与所述推杆组件的下部相转动连接，所述后连杆的另一端部与所述前连杆的一端部相转动连接，所述后连杆与所述后支架相转动连接，所述前连杆的另一端部与所述前支架相转动连接；
所述第一轮轴与所述第一侧轴的轴心连线之间形成第一直线，所述第二轮轴与所述第一侧轴的轴心连线之间形成第二直线，当所述双人儿童推车处于展开状态时，每个所述侧支架上，所述第一直线与所述第二直线之间的夹角为95~150度，所述第一轮轴与所述第二轮轴的轴心连线之间的距离为400~500mm。
在一些实施例中，所述儿童推车至少能够进行一次折叠，当所述儿童推车进行一次折叠时，所述推杆组件向前翻转带动所述侧扶手向下翻转与所述后支架靠拢，通过所述前连杆和所述后连杆带动所述前支架向后翻转与所述后支架靠拢，当所述儿童推车处于一次折叠状态时，左右两侧中每侧的所述前轮组件和所述后轮组件分别位于同一侧的所述侧支架的左右两侧。
作为一个具体的方面，当所述双人儿童推车处于展开状态时，所述第一直线与所述第二直线之间的夹角为105~130度。
在一些实施例中，所述横撑支架包括：
第一横杆，所述第一横杆沿左右方向延伸，所述第一横杆的一端部与外侧的所述前支架通过第一横轴相转动连接，所述第一横杆的另一端部与中间的所述前支架相固定连接；
第二横杆，所述第二横杆沿左右方向延伸，所述第二横杆的一端部与外侧的所述后支架通过第二横轴相转动连接，所述第二横杆的另一端部与中间的所述后支架相固定连接；
第三横杆，所述第三横杆沿左右方向延伸，所述第三横杆的一端部与外侧的所述推杆组件的上部通过第三横轴相转动连接，所述第三横杆的另一端部与中间的所述推杆组件的上部相固定连接；
所述双人儿童推车能够进行二次折叠，二次折叠时，位于外侧的两个的所述侧支架分别绕所述第一横轴、所述第二横轴和所述第三横轴向位于中间的所述侧支架的方向翻转。
在又一些具体实施例中，当所述双人儿童推车处于二次折叠状态时，位于所述推车车架的外侧的每侧的所述第一横轴、所述第二横轴和所述第三横轴均沿同一直线方向延伸。
在又一些具体实施例中，当所述双人儿童推车处于二次折叠状态时，位于外侧的两个所述侧支架上的所述第一轮轴和所述第二轮轴均沿前后方向延伸，位于中间的所述侧支架上的所述第一轮轴和所述第二轮轴均沿左右方向延伸。
在一些实施例中，位于中间的所述前支架包括前支杆和分别固定连接在所述前支杆的前端部的第一前轮接头和第二前轮接头，所述第一前轮接头和所述第二前轮接头上分别通过所述第一轮轴转动地连接有所述前轮组件，位于外侧的两个所述前支架分别通过所述第一轮轴转动地连接有所述前轮组件。
作为一个具体的方面，位于中间的所述后支架的左右两侧分别连接有所述后轮组件，当所述双人儿童推车处于折叠状态时，在中间的所述侧支架上，每侧的所述后轮组件均位于同一侧的所述前轮组件与中间的所述侧支架之间。
在一些实施例中，位于外侧的两个的所述后支架的一侧均通过所述第二轮轴转动地连接有所述后轮组件，位于中间的所述后支架的左右两侧分别通过所述第二轮轴转动地连接有所述后轮组件。
作为另一个具体的方面，位于外侧的所述侧支架均包括一个所述前支架、一个所述后支架、一个所述推杆组件、一个所述侧扶手、一个所述前连杆和一个所述后连杆，位于中间的所述侧支架包括一个所述前支架、一个所述后支架、一个所述推杆组件、一个所述侧扶手、两个所述前连杆和两个所述后连杆。
本发明的范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的（但不限于）具有类似功能的技术特征进行互相替换而形成的技术方案等。
由于上述技术方案的运用，本发明与现有技术相比具有下列优点：本发明的儿童推车/双人儿童推车结构简单，能够折叠，折叠操作方便，且折叠后的儿童推车/双人儿童推车结构紧凑，体积较小，便于携带及存放。
附图说明
附图1为实施例1的儿童推车在展开状态下的立体图之一；
附图2为实施例1的儿童推车在展开状态下的立体图之二；
附图3为实施例1的儿童推车在展开状态下的侧视图；
附图4为实施例1的儿童推车在折叠过程中的立体图之一；
附图5为实施例1的儿童推车在折叠过程中的立体图之二；
附图6为实施例1的儿童推车在折叠状态下的立体图；
附图7为实施例1的儿童推车在折叠状态下的侧视图；
附图8为实施例2的儿童推车在展开状态下的立体图；
附图9为实施例2的儿童推车在折叠过程中的立体图；
附图10为实施例2的儿童推车在折叠状态下的立体图；
附图11为实施例2的儿童推车在折叠状态下的侧视图；
附图12为实施例5的儿童推车处于展开状态时的立体结构示意图；
附图13为实施例5的儿童推车处于展开状态时的侧视图；
附图14为实施例5的儿童推车一次折叠时的立体结构示意图；
附图15为实施例5的儿童推车一次折叠完成时的立体结构示意图；
附图16为实施例5的儿童推车一次折叠完成时的侧视图；
附图17为实施例5的儿童推车二次折叠时的主视图；
附图18为实施例5的儿童推车二次折叠完成时的立体结构示意图；
附图19为实施例5的儿童推车二次折叠完成时的主视图；
附图20为实施例6的双人儿童推车在展开状态下的立体图；
附图21为实施例6的双人儿童推车在展开状态下的侧视图；
附图22为实施例6的双人儿童推车在折叠过程中的侧视图；
附图23为实施例6的双人儿童推车在折叠过程中的正视图（一次折叠状态）；
附图24为实施例6的双人儿童推车在折叠状态下的立体图（二次折叠状态）；
附图25为实施例6的双人儿童推车在折叠状态下的正视图（二次折叠状态）。
其中：1、侧支架；11、前支架；12、后支架；13、推杆组件；131、下推杆；132、上推杆；133、第一杆；134、第二杆；14、侧扶手；15、前连杆；16、后连杆；21、前轮组件；22、后轮组件；31、第一轮轴；32、第二轮轴；41、第一侧轴；42、第二侧轴；43、第三侧轴；44、第四侧轴；45、第五侧轴；46、第六侧轴；47、第七侧轴；51、第一直线；52、第二直线；61/103、第一横杆；62/104、第二横杆；63/105、第三横杆；64、第四横杆；7、座杆； 71、第一横轴；72、第二横轴；73、第三横轴；74、第四横轴；8、滑套；
1011、第一轴；1012、第二轴；1013、第三轴；1014、第四轴；1015、第五轴；1016、第六轴；1017、第七轴；1018、第八轴；
106、第一左杆；107、第一右杆；108、第二左杆；109、第二右杆；110、第三左杆；111、第三右杆。
具体实施方式
下面结合附图和具体实施例来对本发明的技术方案作进一步的阐述。
实施例 1
如图1至图7所示，实施例1的儿童推车包括具有展开状态和折叠状态的推车车架、设置在推车车架的底前部的前轮组件21、设置在推车车架的底后部的后轮组件22、用于将推车车架锁定在展开状态下的锁定机构。
推车车架包括分别位于儿童推车的左右两侧的侧支架1和连接在左右两侧的侧支架1之间的横撑支架。
每侧的侧支架1均包括前支架11、后支架12、推杆组件13、侧扶手14、前连杆15和后连杆16。前轮组件21通过第一轮轴31转动地连接在前支架11的下部，后轮组件22通过第二轮轴32转动地连接在后支架12的下部，当推车车架处于展开状态时，前支架11、侧扶手14和推杆组件13均从前向后向上倾斜设置，后支架12从后向前向上倾斜设置。
前支架11的上部与后支架12的上部通过第一侧轴41相转动连接，侧扶手14的下部至少与前支架11的上部和后支架12的上部两个部件中的一个部件通过第二侧轴42相转动连接。一种具体的实施例，侧扶手14的下部与后支架12的上部通过第二侧轴42相转动连接，如图2所示；又一种具体的实施例，第一侧轴41和第二侧轴42沿同一直线方向延伸，即前支架11的上部、后支架12的上部以及侧扶手14的下部三个部件通过第一侧轴41/第二侧轴42相同轴转动连接，如图1所示。侧扶手14的上部与推杆组件13的下部通过第三侧轴43相转动连接，后连杆16的一端部与推杆组件13的下部通过第四侧轴44相转动连接，后连杆16的另一端部与前连杆15的一端部通过第五侧轴45相转动连接，后连杆16与后支架12通过第六侧轴46相转动连接，前连杆15的另一端部与前支架11通过第七侧轴47相转动连接。这样，在前支架11、后支架12、后连杆16和前连杆15之间就形成一个四连杆机构，在推杆组件13、侧扶手14、后支架12和后连杆16之间也形成一个四连杆机构。
为了使儿童推车折叠后体积更小，推杆组件13包括从前向后向上倾斜延伸的下推杆131、能够沿下推杆131的长度延伸方向滑动地设置在下推杆131上的上推杆132，侧扶手14的上部与下推杆131的下部通过第三侧轴43相转动连接，后连杆16的一端部与下推杆131的下部通过第四侧轴44相转动连接。
作为一种具体的方面，下推杆131具有沿其长度方向延伸的中空腔体，上推杆132自下推杆131的上部插入在下推杆131的中空腔体内，且上推杆132能够沿中空腔体的长度延伸方向上下滑动。
推杆组件13还包括推把，推把包括相固定连接的第一杆133和第二杆134，第一杆133与上推杆132的上端部相固定连接。
当侧支架1处于展开状态时，在前支架11上，第七侧轴47位于第一侧轴41的下方；在后支架12上，第一侧轴41位于第二侧轴42的下方，或者，第一侧轴41与第二侧轴42同轴设置，第六侧轴46位于第一侧轴41的下方；在推杆组件13上，第四侧轴44位于第三侧轴43的下方。
当侧支架1展开状态时，如图3所示，第一轮轴31与第一侧轴41的轴心连线之间形成第一直线51，第二轮轴32与第一侧轴41的轴心连线之间形成第二直线52，当儿童推车处于展开状态时，第一直线51与第二直线52之间的夹角设置为95~150度，第一轮轴31与第二轮轴32的轴心连线之间的距离设置为400~500mm。为了使儿童推车折叠后体积更小，结构更紧凑，第一直线51与第二直线52之间的夹角优选为105~130度。
该儿童推车能够进行一次折叠，一次折叠时，每侧的侧支架1均沿高度方向和前后方向收拢，在一次折叠状态下，两侧的前轮组件21和后轮组件22均沿左右方向并排设置，儿童推车左右两侧的每一侧中，第一轮轴31和第二轮轴32两个部件中位于内侧的一个部件位于前轮组件21和后轮组件22两个部件中位于外侧的一个部件的轮廓内。优选当儿童推车处于一次折叠状态时，每侧的前轮组件21和后轮组件22分别位于同一侧的侧支架1的内外两侧，且第一轮轴31和第二轮轴32沿同一直线方向延伸。
本实施例中，当儿童推车处于展开状态时，左右两侧的后轮组件22分别转动连接在后支架12的外侧，且左右两侧的每侧中，前轮组件21均位于第一侧轴41的内侧，后轮组件22均位于第一侧轴41的外侧。这样，当儿童推车处于一次折叠状态时，前轮组件21位于侧支架1的内侧，后轮组件22位于侧支架1的外侧。
该儿童推车还能够进行二次折叠，具体的，横撑支架包括连接在左右两侧的侧支架1之间的第一横杆61、第二横杆62和第三横杆63，第一横杆61、第二横杆62和第三横杆63均沿左右方向延伸，第一横杆61的左右两端部分别与左右两侧的前支架11通过第一横轴71相转动连接，第二横杆62的左右两端部分别与左右两侧的后支架12通过第二横轴72相转动连接，第三横杆63的左右两端部分别与左右两侧的第一杆133通过第三横轴73相转动连接。为了使推车车架在展开位置下的稳定性较强，优选横撑支架还包括第四横杆64，第四横杆64沿左右方向延伸，第四横杆64的左右两端部分别与左右两侧的后连杆16通过第四横轴74相转动连接。在第一横杆61与左右两侧的前支架11之间、第二横杆62与左右两侧的后支架12之间、第三横杆63与左右两侧的第一杆133之间以及第四横杆64与左右两侧的后连杆16之间均设有单向转动限位机构，通过该单向转动限位机构可使左右两侧的侧支架1分别只能向一个方向转动，而无法向另一个方向转动。本实施例中，当儿童推车二次折叠时，两侧的侧支架1可分别绕第一横轴71、第二横轴72、第三横轴73和第四横轴74向儿童推车的内侧翻转折叠，从而使儿童推车折叠后体积更小。当儿童推车处于二次折叠状态时，两侧的前轮组件21和后轮组件22均沿前后方向并排设置，儿童推车的每一侧中，第一轮轴31和第二轮轴32两个部件中位于内侧的一个部件位于前轮组件21和后轮组件22两个部件中位于外侧的一个部件的轮廓内。
上述各单向转动限位机构的具体结构不是本发明的要点，可采用现有技术中的结构。
锁定机构包括设置在上推杆132和下推杆131之间的第一锁定机构和设置在上述的两个四连杆机构中任意相转动连接的两个部件之间的第二锁定机构，第一锁定机构和第二锁定机构可单独解锁，也可以在第一锁定机构解锁后，上推杆132相对下推杆131向下滑动时触发第二锁定机构使第二锁定机构解锁。第一锁定机构和第二锁定机构的具体结构均不是本专利所要保护的技术要点，均可采用现有技术中的结构。
当儿童推车处于展开状态时，第一锁定机构和第二锁定机构均处于锁定状态，第一直线51和第二直线52之间形成95~150度之间的一夹角，第一轮轴31与第二轮轴32的轴心连线之间的距离保持在400~500mm，第一杆133与第三横杆63沿同一直线方向延伸，如图1~图3所示。
当儿童推车折叠时，先进行一次折叠，一次折叠时，先使第一锁定机构解锁，使上推杆132沿下推杆131的长度延伸方向向下滑动一距离后，使第二锁定机构解锁，然后向前翻转推杆组件13，使得侧扶手14绕第二侧轴42向下翻转与后支架12靠拢，通过前连杆15和后连杆16驱使前支架11绕第一侧轴41向后翻转与后支架12靠拢，直至组成侧支架1的各杆件紧密靠拢在一起，且左右两侧的前轮组件21分别收容在每侧的侧支架1的内侧，后轮组件22分别位于每侧的侧支架1的外侧，优选第一轮轴31与第二轮轴32沿同一直线方向延伸，至此完成一次折叠，折叠后的结构如图5所示，此时，第一杆133与第三横杆63仍沿同一直线方向延伸，第一轮轴31和第二轮轴32两个部件中位于下方的一个部件与推杆组件13的上端面之间的距离为230~330mm。然后进行二次折叠，二次折叠时，使两侧的侧支架1分别绕第一横轴71、第二横轴72、第三横轴73和第四横轴74向儿童推车的内侧翻转折叠，最终折叠如图6和图7所示，此时，前轮组件21位于侧支架1的后侧，后轮组件22位于侧支架1的前侧，第一横轴71、第二横轴72、第三横轴73和第四横轴74沿同一直线方向延伸，第一杆133与第三横杆63相垂直，第一轮轴31和第二轮轴32两个部件中位于下方的一个部件与推杆组件13的上端面之间的距离与一次折叠后的相同。该儿童推车折叠后的结构紧凑，体积较小，便于携带及存放。
实施例2
如图8~图11所示，本实施例中，左右两侧的后轮组件22分别转动连接在后支架12的内侧，且左右两侧的每侧中，前轮组件21均位于第一侧轴41的外侧，后轮组件22均位于第一侧轴41的内侧。
这样，该儿童推车一次折叠完成后，左右两侧的前轮组件21分别收容在每侧的侧支架1的外侧，后轮组件22分别位于每侧的侧支架1的内侧，如图9所示。该儿童推车二次折叠完成后，前轮组件21位于侧支架1的前侧，后轮组件22位于侧支架1的后侧，如图10所示，除该区别外，其余与实施例1相同。
实施例3
本实施例中，横撑支架包括第一横杆61、第二横杆62和第三横杆63，第一横杆61、第二横杆62和第三横杆63均沿左右方向延伸，第一横杆61连接在左右两侧的前支架11之间，第二横杆62连接在左右两侧的后支架12之间，第三横杆63连接在左右两侧的第一杆133之间，第一横杆61、第二横杆62和第三横杆63均为能够沿左右方向伸缩的伸缩杆。为了使推车车架在展开位置下的稳定性较强，优选横撑支架还包括第四横杆64，第四横杆64沿左右方向延伸，第四横杆64连接在左右两侧的后连杆16之间，第四横杆64也为能够沿左右方向伸缩的伸缩杆。其余与实施例1相同。这样，儿童推车二次折叠时，向儿童推车的内侧分别推动左右两侧的侧支架1，第一横杆61、第二横杆62、第三横杆63和第四横杆64收缩，使两侧的侧支架1靠拢在一起，从而实现儿童推车的横向折叠，此折叠状态时，左右两侧的前轮组件2分别收容在每侧的侧支架1的内侧，后轮组件22分别位于每侧的侧支架1的外侧。
实施例4
本实施例中，横撑支架包括第一横杆61、第二横杆62和第三横杆63，第一横杆61、第二横杆62和第三横杆63均沿左右方向延伸，第一横杆61连接在左右两侧的前支架11之间，第二横杆62连接在左右两侧的后支架12之间，第三横杆63连接在左右两侧的第一杆133之间，第一横杆61、第二横杆62和第三横杆63均为能够沿左右方向伸缩的伸缩杆。为了使推车车架在展开位置下的稳定性较强，优选横撑支架还包括第四横杆64，第四横杆64沿左右方向延伸，第四横杆64连接在左右两侧的后连杆16之间，第四横杆64也为能够沿左右方向伸缩的伸缩杆。其余与实施例2相同。这样，儿童推车二次折叠时，向儿童推车的内侧分别推动左右两侧的侧支架1，第一横杆61、第二横杆62、第三横杆63和第四横杆64收缩，使两侧的侧支架1靠拢在一起，从而实现儿童推车的横向折叠，此折叠状态时，左右两侧的前轮组件2分别收容在每侧的侧支架1的外侧，后轮组件22分别位于每侧的侧支架1的内侧。
实施例5
如图12至图19所示，本实施例的一种儿童推车，包括具有展开状态和折叠状态的车架、设置在车架下方前部的前轮组件21、设置在车架下方后部的后轮组件22和用于将车架锁定在展开的锁定机构。所述车架包括分别位于左右两侧的两个侧支架1、连接在两个所述侧支架1之间且能够沿左右方向伸缩的横撑支架。所述侧支架1包括下部与前轮组件21连接的前支架11、下部与后轮组件22连接的后支架12、推杆组件13、侧扶手14、前连杆15、后连杆16、座杆7和滑套8。
所述推杆组件13包括相互滑动连接的上推杆132和下推杆131。所述上推杆132和下推杆131一上一下设置。所述下推杆131呈内部中空的结构，所述上推杆132自下推杆131的上部插入在下推杆131内且能沿下推杆131的长度延伸方向上下滑动。
所述前支架11和后支架12一前一后设置。所述前支架11、后支架12和侧扶手14三个部件中的两个部件通过一转轴相枢轴连接，第三个部件至少与所述的两个部件中的一个部件通过一转轴相枢轴连接。所述侧扶14还与推杆组件13通过第二轴1012相枢轴连接，所述后连杆16与下推杆131通过第三轴1013相枢轴连接，所述后连杆16与后支架12通过第四轴1014相枢轴连接，所述前连杆15与前支架11通过第五轴1015向枢轴连接，所述前连杆15与后连杆16通过第六轴1016相枢轴连接，当所述车架处于展开状态时，用于连接所述前支架11、后支架12和侧扶手14中的任意两个部件之间的转轴位于第二轴1012与用于第五轴1015连线的后方。
本实施例中，所述前支架11、后支架12和侧扶手14三个部件是通过同一转轴两两相枢轴连接的。具体地说，所述同一转轴为第一轴1011，所述前支架11的上部、后支架12的上部和侧扶手14的下部通过第一轴1011相互枢轴连接。所述侧扶手14的上部与下推杆131的下部通过第二轴1012枢轴连接。所述后连杆16的上部与下推杆131的下部通过第三轴1013枢轴连接，所述后连杆16通过第四轴1014与后支架12枢轴连接。所述前连杆15的前部与前支架11通过第五轴1015枢轴连接，所述前连杆15的后部与后连杆16的前部通过第六轴1016枢轴连接。所述滑套8通过第七轴1017与侧扶手14的中部枢轴连接，所述座杆7穿设在所述滑套8内且其后部与后连杆16通过第八轴1018枢轴连接，所述座杆7能够在滑套8内滑动。
所述下推杆131、侧扶手14、后支架12和后连杆16构成第一四连杆机构，所述前支架11、后支架12、前连杆15和后连杆16构成第二四连杆机构。所述侧扶手14、下推杆131、后连杆16、座杆7和滑套8构成曲柄滑块机构。
所述第二轴1012在下推杆131上位于第三轴1013的上方，所述第四轴1014位于第一轴11的下方且位于第六轴1016的后方。所述第七轴1017在侧扶手14上位于第一轴1011和第二轴1012之间，所述第八轴1018在后连杆16上位于第三轴1013和第四轴1014之间。
所述锁定机构包括用于将上推杆132和下推杆131相互锁定的第一锁定件和用于将下推杆131和后连杆16相互锁定的第二锁定件。
所述横撑支架包括设置在两个推杆组件13之间的第一横杆103、设置在两个前支架11之间的第二横杆104和设置在两个后支架12之间的第三横杆105。所述第一横杆103包括分别与两个推杆组件13固定连接的第一左杆106和第一右杆107，所述第一左杆106和第一右杆107相互滑动连接；所述第二横杆104包括分别与两个前支架11固定连接的第二左杆108和第二右杆109，所述第二左杆108和第二右杆109相互滑动连接；所述第三横杆105包括分别与两个后支架12固定连接的第三左杆110和第三右杆111，所述第三左杆110和第三右杆111相互滑动连接。
当所述车架处于展开状态时，所述上推杆132向上滑动伸出在下推杆131的上部，所述第一锁定件将上推杆132和下推杆131相互锁定。同时第二锁定件将下推杆131和后连杆16相互锁定。所述前支架11和后支架12一前一后相互展开呈人字形撑立。所述侧扶手14展开在前支架11和后支架12的上方，所述侧扶手14位于推杆组件13和后连杆16的前方。所述前连杆15位于前支架11和后支架12的下方且沿前后方向延伸。所述后连杆16呈J型，所述第六轴1016位于前支架11和后支架12的下方。所述座杆7立在侧扶手14和后连杆16之间且沿前后方向延伸。所述第一轴1011位于所述第二轴1012和第五轴1015的连线的后方。同时，所述第一左杆106和第一右杆107、第二左杆108和第二右杆109以及第三左杆110和第三右杆111均相互滑动远离使两个侧支架相互远离展开。
所述车架折叠需要进行两次折叠操作，首先是通过一次折叠操作来进行两个侧支架1各自的折叠，两个侧支架1的各自折叠是同步完成的。然后再通过二次折叠操作横撑支架进行两个侧支架1相互收拢的折叠。
具体地说，当所述车架进行一次折叠时，首先，操作所述第一锁定件解锁，驱动所述上推杆132向下滑动，当下推杆131的下端到达第二锁定件处时，所述下推杆131触发第二锁定件解锁。此时，车架就被完全解锁，驱动第一四连杆机构中的任一杆件均能带动其他杆件与其靠拢收折。本实施例中，操作推杆组件13向下运动与后支架12靠拢，进而在第一四连杆机构的作用下，侧扶手14和后连杆16均一起向下运动与后支架12靠拢收折。同时前支架11和前连杆15在第二四连杆机构的作用下与后支架12和后连杆16联动，前支架11和前连杆15与后支架12和后连杆16靠拢收折。而且，同时所述座杆7在曲柄滑块机构的作用下向下滑动且向后转动与推杆组件13靠拢收折。如图15和图16所示，车架完成一次折叠。
当所述车架进行二次折叠时，所述第一左杆106和第一右杆107、第二左杆108和第二右杆109以及第三左杆110和第三右杆111均相互滑动靠近使两个侧支架1相互靠近收拢。
由于所述第一轴1011位于所述第二轴1012和第五轴1015的连线的后方。这样能够进一步保证侧支架1的各杆件折叠后相互间的间隙小，车架整体扁平，体积小。
可见，本实施例所述的儿童推车折叠后扁平工整，体积小，方便运输携带。车架能够上下折叠以及横向左右收折，折叠后的车架重心稳定且重心线经过前轮组件101和后轮组件102撑地的支撑点使儿童推车能够自立在地面上。
实施例6
如图20至图25所示，本实施例的双人儿童推车包括具有展开状态和折叠状态的推车车架、设置在推车车架的底前部的前轮组件21、设置在推车车架的底后部的后轮组件22、用于将推车车架锁定在展开状态下的锁定机构。
推车车架包括分别沿左右方向依次并排设置的三个侧支架1和分别连接在相邻两个侧支架1之间的横撑支架。
每个侧支架1均包括前支架11、后支架12、推杆组件13、侧扶手14、前连杆15和后连杆16。前轮组件21通过第一轮轴31转动地连接在前支架11的下部，后轮组件22通过第二轮轴32转动地连接在后支架12的下部，当推车车架处于展开状态时，前支架11、侧扶手14和推杆组件13均从前向后向上倾斜设置，后支架12从后向前向上倾斜设置。
前支架11的上部与后支架12的上部通过第一侧轴41相转动连接，侧扶手14的下部至少与前支架11的上部和后支架12的上部两个部件中的一个部件通过第二侧轴42相转动连接。一种具体的实施例，侧扶手14的下部与后支架12的上部通过第二侧轴42相转动连接，如图1所示；又一种具体的实施例，第一侧轴41和第二侧轴42沿同一直线方向延伸，即前支架11的上部、后支架12的上部以及侧扶手14的下部三个部件通过第一侧轴41/第二侧轴42相同轴转动连接。侧扶手14的上部与推杆组件13的下部通过第三侧轴43相转动连接，后连杆16的一端部与推杆组件13的下部通过第四侧轴44相转动连接，后连杆16的另一端部与前连杆15的一端部通过第五侧轴45相转动连接，后连杆16与后支架12通过第六侧轴46相转动连接，前连杆15的另一端部与前支架11通过第七侧轴47相转动连接。这样，在前支架11、后支架12、后连杆16和前连杆15之间就形成一个四连杆机构，在推杆组件13、侧扶手14、后支架12和后连杆16之间也形成一个四连杆机构。
推杆组件13包括从前向后向上倾斜延伸的下推杆131、能够沿下推杆131的长度延伸方向滑动地设置在下推杆131上的上推杆132，侧扶手14的上部与下推杆131的下部通过第三侧轴43相转动连接，后连杆16的一端部与下推杆131的下部通过第四侧轴44相转动连接。一种具体的实施例，下推杆131具有沿其长度方向延伸的中空腔体，上推杆132自下推杆131的上部插入在下推杆131的中空腔体内，且上推杆132能够沿中空腔体的长度延伸方向上下滑动。
当推车车架处于展开状态时，在前支架11上，第七侧轴47位于第一侧轴41的下方；在后支架12上，第一侧轴41位于第二侧轴42的下方，或者，第一侧轴41与第二侧轴42同轴设置，第六侧轴46位于第一侧轴41的下方；在推杆组件13上，第四侧轴44位于第三侧轴43的下方。
在每个侧支架1上，第一轮轴31与第一侧轴41的轴心连线之间形成第一直线51，第二轮轴32与第一侧轴41的轴心连线之间形成第二直线52，当双人儿童推车处于展开状态时，第一直线51与第二直线52之间的夹角为95~150度，第一轮轴31与第二轮轴32的轴心连线之间的距离为400~500mm，通过这样的设置，可使双人儿童推车折叠后体积更小。为了使双人儿童推车折叠后体积更小，结构更紧凑，第一直线51与第二直线52之间的夹角优选为105~130度。
本实施例中，位于外侧的两个侧支架1均包括一个前支架11、一个后支架12、一个推杆组件13、一个侧扶手14、一个前连杆15和一个后连杆16，位于中间的侧支架1包括一个前支架11、一个后支架12、一个推杆组件13、一个侧扶手14、两个前连杆15和两个后连杆16。
在该实施例中，位于外侧的两个前支架11的结构相同，每个前支架11的下部转动连接有一个前轮组件21，位于中间的前支架11包括从前向后向上倾斜延伸的前支杆111、分别固定连接在前支杆111的前端部的第一前轮接头112和第二前轮接头113，前支杆111、第一前轮接头112和第二前轮接头113形成Y字型结构，第一前轮接头112和第二前轮接头113的前部分别通过第一轮轴31转动连接有一个前轮组件21，前支杆111的后部与后支架12的上部通过第一侧轴41相转动连接。位于中间的后支架12的下部的左右两侧均通过第二轮轴32转动连接有一个后轮组件22，每个位于外侧的后支架12的下部的左右两侧中的一侧通过第二轮轴32转动连接有一个后轮组件22。通过这样的结构设置，可使该双人儿童推车在折叠时，使位于中间侧支架1上的前轮组件21与后轮组件22的位置相互错开。
当双人儿童推车处于展开状态时，位于外侧的两个后轮组件22分别转动连接在后支架12的外侧，且外侧两侧的每一侧中，前轮组件21均位于第一侧轴41的内侧，后轮组件22均位于第一侧轴41的外侧。
横撑支架包括第一横杆61、第二横杆62和第三横杆63，第一横杆61、第二横杆62和第三横杆63均沿该双人儿童推车的左右方向延伸。第一横杆61的一端部与与外侧两侧中一侧的前支架11通过第一横轴71相转动连接，第一横杆61的另一端部与中间的前支架11相固定连接。第二横杆62的一端部与外侧两侧中一侧的后支架12通过第二横轴72相转动连接，第二横杆62的另一端部与中间的后支架12相固定连接。第三横杆63的一端部与外侧两侧中一侧的上推杆132通过第三横轴73相转动连接，第三横杆63的另一端部与中间的上推杆132相固定连接。为了使推车车架在展开位置下的稳定性较强，优选横撑支架还包括第四横杆64，第四横杆64沿该双人儿童推车的左右方向延伸，第四横杆64的一端部与外侧两侧中一侧的后连杆16通过第四横轴74相转动连接，第四横杆64的另一端部分别与中间的两个后连杆16中的一个相固定连接。在第一横杆61的一端部与前支架11之间、第二横杆62的一端部与后支架12之间、第三横杆63的一端部与上推杆132之间以及第四横杆64的一端部与后连杆16之间均设有单向转动限位机构，通过该单向转动限位机构可使位于外侧的两个侧支架1分别只能向一个方向转动，而无法向另一个方向转动。各单向转动限位机构的具体结构不是本发明的要点，可采用现有技术中的结构。
这样，当双人儿童推车的侧支架1沿上下和前后方向进行一次折叠收拢减小了该儿童推车的高度及前后方向上的长度后，位于外侧的两个侧支架1可分别绕第一横轴71、第二横轴72、第三横轴73和第四横轴74向中间的侧支架1方向翻转进行二次折叠，以减小该儿童推车左右方向上的宽度，从而使双人儿童推车折叠后体积更小。
锁定机构分别设置在每个侧支架1上，具体的，锁定机构包括设置在上推杆132和下推杆131之间的第一锁定机构和设置在上述的两个四连杆机构中任意相转动连接的两个部件之间的第二锁定机构，第一锁定机构和第二锁定机构可单独解锁，也可以在第一锁定机构解锁后，上推杆132相对下推杆131向下滑动时触发第二锁定机构使第二锁定机构解锁。第一锁定机构和第二锁定机构的具体结构均不是本专利所要保护的技术要点，均可采用现有技术中的结构。
当双人儿童推车处于展开状态时，第一锁定机构和第二锁定机构均处于锁定状态，第一直线51和第二直线52之间形成95~150度之间的一夹角，第一轮轴31与第二轮轴32的轴心连线之间的距离保持在400~500mm，第一轮轴31和第二轮轴32均沿左右方向延伸，如图20和图21所示。
当双人儿童推车折叠时，先进行一次折叠，使第一锁定机构解锁，使上推杆132沿下推杆131的长度延伸方向向下滑动一距离后，使第二锁定机构解锁，然后向前翻转推杆组件13，使得侧扶手14绕第二侧轴42向下翻转与后支架12靠拢，通过前连杆15和后连杆16驱使前支架11绕第一侧轴41向后翻转与后支架12靠拢，直至组成侧支架1的各杆件紧密靠拢在一起，至此完成一次折叠，折叠后的结构如图23所示。此时，第一轮轴31和第二轮轴32仍均沿左右方向延伸；在外侧两侧的每一侧中，前轮组件21分别收容在侧支架1的内侧，后轮组件22分别位于侧支架1的外侧。在中间的侧支架1上，前轮组件21分别位于中间的侧支架1的左右两侧，后轮组件22也分别位于中间的侧支架1的左右两侧，且每侧的后轮组件22均位于前轮组件21与中间的侧支架1之间。然后进行二次折叠，使两侧的侧支架1分别绕第一横轴71、第二横轴72、第三横轴73和第四横轴74向中间侧支架1方向翻转折叠，最终折叠如图24和图25所示，此时，第一横轴71、第二横轴72、第三横轴73和第四横轴74沿同一直线方向延伸，位于外侧的两个侧支架1上的第一轮轴31和第二轮轴32均沿前后方向延伸，位于中间的侧支架1上的前轮组件21和后轮组件22的状态与一次折叠时的状态相同，第一轮轴31和第二轮轴32仍均沿左右方向延伸。折叠后的双人儿童推车结构紧凑，体积较小，便于携带及存放。
实施例7
当双人儿童推车处于展开状态时，外侧的两个后轮组件22分别转动连接在后支架12的内侧，且外侧两侧的每一侧中，前轮组件21均位于第一侧轴41的外侧，后轮组件22均位于第一侧轴41的内侧。
该双人儿童推车折叠时，一次折叠完成后，外侧的前轮组件21分别收容在每侧的侧支架1的外侧，对应的后轮组件22分别位于每侧的侧支架1的内侧，除该区别外，其余与实施例6相同。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (30)

  1. 一种儿童推车，包括具有展开状态和折叠状态的推车车架、设置在所述推车车架的下方前部的前轮组件、设置在所述推车车架的下方后部的后轮组件和用于将所述推车车架锁定在展开的锁定机构，其特征在于：所述推车车架包括分别位于左右两侧的侧支架、连接在左右两侧的所述侧支架之间的横撑支架，每个所述侧支架均包括前支架、后支架、推杆组件、侧扶手、前连杆和后连杆，所述前轮组件通过第一轮轴转动地设置在所述前支架的下部，所述后轮组件通过第二轮轴转动地设置在所述后支架的下部，所述前支架的上部与所述后支架的上部相转动连接，所述侧扶手的下部至少与所述前支架的上部和所述后支架的上部两个部件中的一个部件相转动连接，所述侧扶手的上部与所述推杆组件的下部相转动连接，所述后连杆的一端部与所述推杆组件的下部相转动连接，所述后连杆的另一端部与所述前连杆的一端部相转动连接，所述后连杆与所述后支架相转动连接，所述前连杆的另一端部与所述前支架相转动连接，所述儿童推车至少能够进行一次折叠，当所述儿童推车进行一次折叠时，所述推杆组件向前翻转带动所述侧扶手向下翻转与所述后支架靠拢，并且通过所述前连杆和所述后连杆带动所述前支架向后翻转与所述后支架靠拢，当所述儿童推车处于一次折叠状态时，两侧的所述前轮组件和所述后轮组件均沿左右方向并排设置，所述儿童推车左右两侧的每一侧中，所述第一轮轴和所述第二轮轴两个部件中位于内侧的一个部件位于所述前轮组件和所述后轮组件两个部件中位于外侧的一个部件的轮廓内。
  2. 根据权利要求1所述的一种儿童推车，其特征在于：当所述儿童推车处于一次折叠状态时，所述第一轮轴和所述第二轮轴沿同一直线方向延伸。
  3. 根据权利要求1所述的一种儿童推车，其特征在于：当所述儿童推车处于一次折叠状态时，每侧的所述前轮组件和所述后轮组件分别位于同一侧的所述侧支架的内外两侧。
  4. 根据权利要求3所述的一种儿童推车，其特征在于：所述前支架的上部与所述后支架的上部通过第一侧轴相转动连接，当所述儿童推车处于展开状态时，左右两侧的所述后轮组件分别转动连接在所述后支架的外侧，且左右两侧的每侧中，所述前轮组件均位于所述第一侧轴的内侧，所述后轮组件均位于所述第一侧轴的外侧。
  5. 根据权利要求3所述的一种儿童推车，其特征在于：所述前支架的上部与所述后支架的上部通过第一侧轴相转动连接，当所述儿童推车处于展开状态时，左右两侧的所述后轮组件分别转动连接在所述后支架的内侧，且左右两侧的每侧中，所述前轮组件均位于所述第一侧轴的外侧，所述后轮组件均位于所述第一侧轴的内侧。
  6. 根据权利要求4或5所述的一种儿童推车，其特征在于：所述第一轮轴与所述第一侧轴的轴心连线之间形成第一直线，所述第二轮轴与所述第一侧轴的轴心连线之间形成第二直线，当儿童推车处于展开状态时，所述第一直线与所述第二直线之间的夹角为95~150度，所述第一轮轴与所述第二轮轴的轴心连线之间的距离为400~500mm。
  7. 根据权利要求6所述的一种儿童推车，其特征在于：当儿童推车处于展开状态时，所述第一直线与所述第二直线之间的夹角为105~130度。
  8. 根据权利要求1所述的一种儿童推车，其特征在于：当所述儿童推车处于一次折叠状态时，所述第一轮轴和所述第二轮轴两个部件中位于下方的一个部件与所述推杆组件的上端面之间的距离为230~330mm。
  9. 根据权利要求1所述的一种儿童推车，其特征在于：所述推杆组件包括下推杆和能够沿所述下推杆的长度延伸方向滑动地设置在所述下推杆上的上推杆，所述侧扶手的上部和所述后连杆的一端部分别与所述下推杆的下部相转动连接。
  10. 根据权利要求1至9中任一项所述的一种儿童推车，其特征在于：所述儿童推车还能够进行二次折叠，当所述儿童推车处于二次折叠状态时，两侧的所述前轮组件和所述后轮组件均沿前后方向并排设置。
  11. 根据权利要求10所述的一种儿童推车，其特征在于：所述横撑支架包括：
    第一横杆，所述第一横杆沿左右方向延伸，所述第一横杆的左右两端部分别与左右两侧的所述前支架通过第一横轴相转动连接；
    第二横杆，所述第二横杆沿左右方向延伸，所述第二横杆的左右两端部分别与左右两侧的所述后支架通过第二横轴相转动连接；
    第三横杆，所述第三横杆沿左右方向延伸，所述第三横杆的左右两端部分别与左右两侧的所述推杆组件通过第三横轴相转动连接；
    当所述儿童推车进行二次折叠时，两侧的所述侧支架分别绕所述第一横轴、所述第二横轴和所述第三横轴向所述儿童推车的内侧翻转。
  12. 根据权利要求11所述的一种儿童推车，其特征在于：当所述儿童推车处于二次折叠状态时，位于所述推车车架的左右两侧的每侧的所述第一横轴、所述第二横轴和所述第三横轴均沿同一直线方向延伸。
  13. 根据权利要求11所述的一种儿童推车，其特征在于：所述推杆组件包括下推杆、上推杆和推把，所述推把包括相固定连接的第一杆和第二杆，所述第一杆与所述上推杆的上端部相固定连接，当所述儿童推车处于展开状态时，所述第一杆与所述第三横杆沿同一直线方向延伸，当所述儿童推车处于二次折叠状态时，所述第一杆与所述第三横杆相垂直。
  14. 根据权利要求1所述的一种儿童推车，其特征在于：所述横撑支架包括：
    第一横杆，所述第一横杆沿左右方向延伸，所述第一横杆能够沿左右方向伸缩地连接在左右两侧的所述前支架之间；
    第二横杆，所述第二横杆沿左右方向延伸，所述第二横杆能够沿左右方向伸缩地连接在左右两侧的所述后支架之间；
    第三横杆，所述第三横杆沿左右方向延伸，所述第三横杆能够沿左右方向伸缩地连接在与左右两侧的所述推杆组件之间；
    所述儿童推车能够进行二次折叠，所述儿童推车二次折叠时，所述第一横杆、所述第二横杆和所述第三横杆收缩，两侧的所述侧支架沿左右方向靠拢。
  15. 根据权利要求1至4中任一项所述的一种儿童推车，其特征在于：所述前支架的上部与所述后支架的上部通过一转轴相枢轴连接，所述侧扶手的下部至少与所述前支架的上部和所述后支架的上部两个部件中的一个部件通过一转轴相枢轴连接，所述侧扶手的上部与所述推杆组件的下部通过第二轴相枢轴连接，所述后连杆与推杆组件的下部通过第三轴相枢轴连接，所述后连杆与后支架通过第四轴相枢轴连接，所述前连杆与前支架通过第五轴向枢轴连接，所述前连杆与后连杆通过第六轴相枢轴连接，当所述车架处于展开状态时，用于连接所述前支架、后支架和侧扶手中的任意两个部件之间的转轴位于第二轴与第五轴连线的后方。
  16. 根据权利要求15所述的一种儿童推车，其特征在于：所述前支架、后支架和侧扶手三个部件通过同一转轴相枢轴连接，所述同一转轴为第一轴，所述推杆组件、侧扶手、后支架和后连杆构成第一四连杆机构，所述前支架、后支架、前连杆和后连杆构成第二四连杆机构，当所述车架折叠时，驱动第一四连杆机构中的任一杆件均能带动其他杆件与其靠拢收折，同时第一四连杆机构中的后支架和后连杆运动带动第二四连杆机构中的前支架和前连杆联动，前支架和前连杆与后支架和后连杆靠拢收折。
  17. 根据权利要求1或16所述的一种儿童推车，其特征在于：所述推杆组件包括相互滑动连接的上推杆和下推杆，所述上推杆和下推杆一上一下设置，所述侧扶手和后连杆均是与推杆组件中的下推杆枢轴连接，所述前支架的上部、后支架的上部和侧扶手的下部通过第一轴相互枢轴连接，所述侧扶手的上部与下推杆的下部通过第二轴枢轴连接，所述后连杆的上部与下推杆的下部通过第三轴枢轴连接，所述后连杆通过第四轴与后支架枢轴连接，所述前连杆的前部与前支架通过第五轴枢轴连接，所述前连杆的后部与后连杆的前部通过第六轴枢轴连接，当所述车架处于展开状态时，所述第一轴位于所述第二轴和第五轴的连线的后方。
  18. 根据权利要求17所述的一种儿童推车，其特征在于：所述第二轴在下推杆上位于第三轴的上方，所述第四轴位于第一轴的下方且位于第六轴的后方。
  19. 根据权利要求17所述的一种儿童推车，其特征在于：所述侧支架还包括座杆和滑套，所述滑套通过第七轴与侧扶手枢轴连接，所述座杆穿设在所述滑套内且其后部与后连杆通过第八轴枢轴连接，所述座杆能够在滑套内滑动。
  20. 根据权利要求19所述的一种儿童推车，其特征在于：所述第七轴在侧扶手上位于第一轴和第二轴之间，所述第八轴在后连杆上位于第三轴和第四轴之间，当所述车架处于展开状态时，所述侧扶手位于推杆组件和后连杆的前方，所述座杆立在侧扶手和后连杆之间且沿前后方向延伸；当所述车架折叠时，所述座杆随侧扶手和后连杆联动与推杆组件靠拢收折。
  21. 根据权利要求1所述的一种儿童推车，其特征在于：所述推车车架还包括位于左右两侧的所述侧支架之间的中间的侧支架。
  22. 根据权利要求21所述的一种儿童推车，其特征在于：所述前支架的上部与所述后支架的上部通过第一侧轴相转动连接，所述第一轮轴与所述第一侧轴的轴心连线之间形成第一直线，所述第二轮轴与所述第一侧轴的轴心连线之间形成第二直线，当所述儿童推车处于展开状态时，每个所述侧支架上，所述第一直线与所述第二直线之间的夹角为95~150度，所述第一轮轴与所述第二轮轴的轴心连线之间的距离为400~500mm。
  23. 根据权利要求22所述的一种儿童推车，其特征在于：当所述儿童推车处于展开状态时，所述第一直线与所述第二直线之间的夹角为105~130度。
  24. 根据权利要求21所述的一种儿童推车，其特征在于：所述横撑支架包括：
    第一横杆，所述第一横杆沿左右方向延伸，所述第一横杆的一端部与外侧的所述前支架通过第一横轴相转动连接，所述第一横杆的另一端部与中间的所述前支架相固定连接；
    第二横杆，所述第二横杆沿左右方向延伸，所述第二横杆的一端部与外侧的所述后支架通过第二横轴相转动连接，所述第二横杆的另一端部与中间的所述后支架相固定连接；
    第三横杆，所述第三横杆沿左右方向延伸，所述第三横杆的一端部与外侧的所述推杆组件的上部通过第三横轴相转动连接，所述第三横杆的另一端部与中间的所述推杆组件的上部相固定连接；
    所述儿童推车能够进行二次折叠，二次折叠时，位于外侧的两个的所述侧支架分别绕所述第一横轴、所述第二横轴和所述第三横轴向位于中间的所述侧支架的方向翻转。
  25. 根据权利要求24所述的一种儿童推车，其特征在于：当所述儿童推车处于二次折叠状态时，位于所述推车车架的外侧的每侧的所述第一横轴、所述第二横轴和所述第三横轴均沿同一直线方向延伸。
  26. 根据权利要求24所述的一种儿童推车，其特征在于：当所述儿童推车处于二次折叠状态时，位于外侧的两个所述侧支架上的所述第一轮轴和所述第二轮轴均沿前后方向延伸，位于中间的所述侧支架上的所述第一轮轴和所述第二轮轴均沿左右方向延伸。
  27. 根据权利要求1所述的一种儿童推车，其特征在于：位于中间的所述侧支架上的所述前支架包括前支杆和分别固定连接在所述前支杆的前端部的第一前轮接头和第二前轮接头，所述第一前轮接头和所述第二前轮接头上分别通过所述第一轮轴转动地连接有所述前轮组件，位于外侧的两个所述侧支架上的所述前支架分别通过所述第一轮轴转动地连接有所述前轮组件。
  28. 根据权利要求27所述的一种儿童推车，其特征在于：位于中间的所述侧支架上的所述后支架的左右两侧分别连接有所述后轮组件，当所述儿童推车处于折叠状态时，在中间的所述侧支架上，每侧的所述后轮组件均位于同一侧的所述前轮组件与中间的所述侧支架之间。
  29. 根据权利要求21所述的一种儿童推车，其特征在于：位于外侧的两个所述侧支架上的所述后支架的一侧均通过所述第二轮轴转动地连接有所述后轮组件，位于中间的所述侧支架上的所述后支架的左右两侧分别通过所述第二轮轴转动地连接有所述后轮组件。
  30. 根据权利要求21至29中任一项所述的一种儿童推车，其特征在于：位于外侧的所述侧支架均包括一个所述前支架、一个所述后支架、一个所述推杆组件、一个所述侧扶手、一个所述前连杆和一个所述后连杆，位于中间的所述侧支架包括一个所述前支架、一个所述后支架、一个所述推杆组件、一个所述侧扶手、两个所述前连杆和两个所述后连杆。
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