WO2019007196A1 - 一种儿童推车的车轮支架收拢机构及车架 - Google Patents

一种儿童推车的车轮支架收拢机构及车架 Download PDF

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Publication number
WO2019007196A1
WO2019007196A1 PCT/CN2018/090916 CN2018090916W WO2019007196A1 WO 2019007196 A1 WO2019007196 A1 WO 2019007196A1 CN 2018090916 W CN2018090916 W CN 2018090916W WO 2019007196 A1 WO2019007196 A1 WO 2019007196A1
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WO
WIPO (PCT)
Prior art keywords
support bar
action
rotating shaft
cross member
disposed
Prior art date
Application number
PCT/CN2018/090916
Other languages
English (en)
French (fr)
Inventor
张正球
Original Assignee
昆山森夏儿童用品有限公司
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Filing date
Publication date
Application filed by 昆山森夏儿童用品有限公司 filed Critical 昆山森夏儿童用品有限公司
Publication of WO2019007196A1 publication Critical patent/WO2019007196A1/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
    • B62B7/083—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 the wheel axes being moved from each other during folding
    • 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
    • B62B7/086—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 becoming smaller in all three dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/003—Hand-propelled vehicles or sledges being foldable or dismountable when not in use with actuation mechanisms which drive the folding or unfolding operation

Definitions

  • the invention relates to the field of baby carriages, in particular to a wheel bracket gathering mechanism and a frame of a stroller.
  • Strollers or strollers are an indispensable tool for the maintenance of infants and young children. Especially as people's life pace is gradually increasing, in order to save the cost of baby care, the stroller is essential for the baby's growth. Supplies.
  • the common scooter's chassis is mostly X-shaped bracket. For the elderly and women with children, the folding and opening of the stroller is time-consuming, laborious and even impossible to complete, and the length after folding is large, which can not meet the modern stroller. Demand.
  • the object of the present invention is to provide a wheel bracket folding mechanism for a stroller, which only needs to be pushed up or down, so that the wheel bracket can be unlocked and folded in one step.
  • a wheel bracket gathering mechanism of a stroller comprising:
  • a front cross member disposed between the two front support bars and having an unfolded state and a folded state
  • a rear cross member disposed between the two rear support bars and having an unfolded state and a folded state
  • the wheel bracket gathering mechanism further includes a bottom support rod, the front end of the bottom support rod is disposed in linkage with the front cross member, and the rear end of the bottom support rod is disposed in linkage with the rear cross member, and the rear
  • the folding action of the cross brace assembly drives the upward movement of the rear end of the bottom support bar, the upward action of the bottom support bar drives the folding action of the front cross brace assembly, and the unfolding action of the rear cross brace assembly drives the bottom support
  • the downward movement of the rear end of the rod the downward movement of the bottom support rod drives the unfolding action of the front cross member.
  • the front cross member includes a first support bar
  • the first support bar includes two support joints disposed on the left and right and two first links disposed on the left and right, the two front support bars and the two
  • the outer ends of the support joints are respectively rotatably connected by the rotating shaft A
  • the inner ends of the two support joints and the outer ends of the two first connecting rods are respectively rotatably connected through the rotating shaft B
  • the two first connecting rods are respectively The inner end is rotatably connected to each other by a rotating shaft C
  • the rotating shaft A extends in the left-right direction
  • the rotating shaft B, C is perpendicular to the extending direction of the rotating shaft A and perpendicular to the extending direction of the bottom support rod;
  • the rear cross brace assembly includes a second support bar, and the second support bar includes two second links disposed on the left and right sides, and the outer ends of the two rear support bars and the two second links are respectively passed through the rotating shaft D
  • the rotating connection, the inner ends of the two second links are rotatably connected to each other by a rotating shaft E, and the rotating shafts D, E are perpendicular to the plane of the two rear supporting rods.
  • the rear cross member is further provided with a first locking component that locks it in an unfolded state and a first unlocking component that drives an unlocking action of the first locking component, the first unlocking component including a support rod and a draw rod, wherein the middle support rod is disposed in linkage with the rear cross member, and the draw rod is movably coupled to the middle support rod in an up and down direction and is disposed in linkage with the first locking member.
  • the upward movement of the drawbar sequentially drives the unlocking action of the first locking component and the upward movement of the middle support bar, and the upward movement of the middle support bar drives the folding action of the rear cross member, the traction
  • the downward movement of the rod sequentially drives the downward movement of the middle support rod and the locking operation of the first locking member, and the downward movement of the middle support rod drives the deployment movement of the rear cross member.
  • the second support bar is disposed in three lanes, including an upper support bar, an oblique support bar and a lower support bar
  • the upper support bar includes two upper and lower upper links disposed on the left and right
  • the oblique support bar includes a two-stage oblique link disposed on the left and right sides
  • the lower support bar includes two lower-section lower links disposed on the left and right sides
  • the middle support bar is provided with a first sliding member that is slidable relative thereto, and the first locking member is disposed on Between the middle support rod and the first sliding member, the outer ends of the two upper connecting rods are respectively rotatably connected to the two rear supporting rods, and the inner ends of the two upper connecting rods are respectively Rotatingly connecting the middle support rods, the outer ends of the two oblique links are respectively rotatably connected to the two rear support rods, and the inner ends of the two oblique links are respectively rotatably connected to the The inner ends of the two lower links are rotat
  • the outer end of the oblique link is adjacent to the lower link, and the rear cross member is in an unfolded state, the first sliding member is adjacent to the upper link, and the rear cross member In the folded state, the first sliding member is adjacent to the lower link.
  • the drawbar is engaged with the first locking component by a bevel structure
  • the first locking component includes a bead
  • the bead is telescopically coupled to the middle support bar in a front-rear direction.
  • the bead protrudes from the middle support bar and engages the first sliding member, and the inclined structure of the drawbar and the bevel structure of the bead under the external force Cooperating to drive the card to retract into the middle support bar against the force of the elastic return member.
  • a frame for a stroller comprising:
  • the push handle assembly includes two push handles disposed on the left and right sides, and the inner ends of the two push handles are rotatably connected to each other about the rotating shaft F;
  • a side stay assembly disposed between the front support bar, the rear support bar and the push bar on the same side, the side brace assembly having an unfolded state and a folded state and being provided with a third locking member that locks it in the unfolded state And a third unlocking assembly that drives the unlocking action of the third locking member;
  • the third unlocking assembly includes a traction rope and a rotating shaft G, one end of the traction rope is interlocked with the third locking component, and the other end of the traction rope is coupled to the rotating shaft G and the traction rope follows Rotating or unwinding of the rotating shaft G, the rotating shaft G is rotatably connected to the push rod, the outer end of the push rod and the rotating shaft G are interlocked with each other, and the folding action of the push handle assembly
  • the rotating take-up action of the rotating shaft G is driven, and the unfolding action of the push handle assembly drives the rotating and paying action of the rotating shaft G; the rotating shafts F, G are perpendicular to the plane of the two push rods.
  • the second locking member includes a positioning ring gear
  • the positioning ring gear is axially movably coupled to the rotary joint A of one of the push handles, under the force of the elastic return member,
  • the positioning ring gear is positioned and connected to the circumferential tooth of the rotary joint B of the other push handle. Under the action of an external force, the positioning ring gear is disengaged from the rotary joint B against the force of the elastic return member to make the
  • the rotary joints A, B are rotatably connected, and one of the rotary joints A, B is the rotary shaft F and the other is a sleeve.
  • the second locking component further includes a limiting structure
  • the limiting structure is radially movably coupled to the rotary joint A, and the limiting structure is under the force of the elastic reset component
  • the ring moves axially, and the operating end of the limiting structure is provided with an unlocking handle.
  • the traction rope is disposed in a cavity of the push rod.
  • the present invention has the following advantages over the prior art:
  • FIG. 1 is a perspective view showing a state in which a frame of a stroller of the present invention is unfolded.
  • Fig. 2 is a side elevational view showing the unfolded state of the stroller of the present invention.
  • Figure 3 is a side elevational view of the frame half-folded state of the stroller of the present invention.
  • FIG. 4 is a top plan view of the front cross member of the present invention in an unfolded state.
  • Figure 5 is a plan view showing the folded state of the front cross member of the present invention.
  • Figure 6 is a rear elevational view of the rear cross member of the present invention in an unfolded state.
  • Figure 7 is a side elevational view of the expanded state of the rear cross member of the present invention.
  • Figure 8 is a rear elevational view of the folded state of the rear cross member of the present invention.
  • Figure 9 is a side elevational view of the folded state of the rear cross member of the present invention.
  • Fig. 10 is a plan view showing the unfolded state of the pusher disclosed in the present invention.
  • Figure 11 is a top plan view of the pusher folding process of the present invention.
  • Figure 12 is a structural schematic view showing the locked state of the second locking member disclosed in the present invention.
  • Figure 13 is a structural schematic view showing the locked state of the third locking member disclosed in the present invention.
  • Figure 14 is a schematic view showing the structure of the unlocking state of the third locking member disclosed in the present invention.
  • Fig. 15 is a perspective view showing the unfolded state of the stroller of the present invention.
  • Figure 16 is a side elevational view of the frame of the stroller of the present invention in an unfolded state.
  • Figure 17 is a side elevational view of the frame half-folded state of the stroller of the present invention.
  • a frame for a stroller includes:
  • a front cross member 200 disposed between the two front support bars 100 and having an unfolded state and a folded state;
  • a rear cross member 400 disposed between the two rear support bars 300 and having an unfolded state and a folded state;
  • a bottom support rod 500 whose front end and rear end are respectively arranged in conjunction with the front cross member 200 and the rear cross member 400.
  • the folding action of the rear cross member 400 drives the upward movement of the rear end of the bottom support rod 500, and the bottom support rod 500
  • the upward movement drives the folding action of the front cross brace assembly 200
  • the unfolding action of the rear cross brace assembly 400 drives the downward action of the rear end of the bottom support bar 500
  • the downward action of the bottom support bar 500 drives the unfolding action of the front cross brace assembly 200;
  • a side support assembly 800 disposed between the front support bar 100, the rear support bar 300, and the push bar 600 on the same side.
  • the folding action of the rear cross brace assembly drives the folding action of the front cross brace assembly through the bottom support bar, and the rear cross brace assembly is convenient and fast to fold, which is very convenient for the elderly and the woman, and the folded frame is smaller in size. .
  • the front cross member 200 includes a first support bar
  • the first support bar includes two support joints 210 disposed on the left and right, and two first links 220 disposed on the left and right, the two front support bars 100 and the two support joints 210
  • the outer ends of the two supporting links 210 are rotatably connected to the outer ends of the two first connecting rods 220 respectively through the rotating shaft B, and the inner ends of the two first connecting rods 220 are respectively passed through the rotating shaft C.
  • the mutually rotatable connection, the rotation axis A extends in the left-right direction, and the rotation axis B, C is perpendicular to the extending direction of the rotation axis A and perpendicular to the extending direction of the bottom support bar 500;
  • the rear cross member 400 includes a second support rod, and the second support rod includes two second links 410 disposed on the left and right sides.
  • the outer ends of the two rear support rods 300 and the two second links 410 are respectively rotatably connected through the rotating shaft D.
  • the inner ends of the two second links 410 are rotatably connected to each other by a rotating shaft E, and the rotating shafts D, E are perpendicular to the plane of the two rear support bars 300.
  • the rear cross member 400 is further provided with a first locking member 420 that locks it in the deployed state and a first unlocking assembly 430 that drives the unlocking action of the first locking member 420.
  • the first unlocking assembly 430 includes The support rod 431 and the draw rod 432 are disposed in linkage with the rear cross member 400.
  • the pull rod 432 is movably coupled to the middle support rod 431 and is disposed in linkage with the first locking member 420.
  • the draw rod 432 is disposed.
  • the upward movement sequentially drives the unlocking action of the first locking member 420 and the upward movement of the middle support rod 431.
  • the upward movement of the middle support rod 431 drives the folding action of the rear cross member 400, and the downward movement of the traction rod 432 sequentially drives the middle support rod.
  • the downward movement of the 431 and the locking operation of the first locking member 420, the downward movement of the middle support rod 431 drives the unfolding operation of the rear cross member 400.
  • the second support rod is disposed in three lanes, including an upper support rod, an inclined support rod and a lower support rod.
  • the upper support rod includes two upper and lower upper links 411 disposed on the left and right sides, and the oblique support rods are disposed on the left and right sides.
  • the two-stage oblique link 412 includes a two-stage lower link 413 disposed on the left and right sides.
  • the middle support rod 431 is provided with a first sliding member 433 slidable relative thereto.
  • the first locking member 420 is disposed on the middle support rod 431.
  • the outer ends of the two upper connecting rods 411 are respectively rotatably connected to the two rear supporting rods 300, and the inner ends of the two upper connecting rods 411 are respectively rotatably connected to the supporting rod 431.
  • the outer ends of the two oblique links 412 are respectively rotatably connected to the two rear support bars 300.
  • the inner ends of the two oblique links 412 are respectively rotatably connected to the middle support rod 431, and the outer ends of the two lower links 413 are respectively
  • the two rear support bars 300 are respectively rotatably connected, and the inner ends of the two lower links 413 are rotatably connected to the support rods 431, respectively.
  • the outer end of the diagonal link 412 is adjacent to the lower link 413, and in the unfolded state, the first sliding member 433 is adjacent to the upper link 411, and the rear cross member 400 is in the folded state.
  • the first sliding member 433 is adjacent to the lower link 413.
  • the drawbar 432 is engaged with the first locking member 420 by a beveled structure.
  • the first locking member 420 includes a bead 421.
  • the bead 421 is telescopically coupled to the middle support bar 431 in the front-rear direction, and is elastically reset. Under the force of the member 422, the bead 421 extends out of the middle support rod 431 and snaps onto the first sliding member 433. Under the action of an external force, the bevel structure of the drawbar 432 cooperates with the bevel structure of the bead 421 to drive the bead 421 to overcome The force of the elastic return member 422 is retracted into the middle support rod 431.
  • the bead 421 is coupled to a spring piece that acts as a resilient return member and is provided with a beveled structure.
  • the bottom of the drawbar 432 is provided with a first unlock button 434 that receives an upward external force.
  • the bottom of the middle support rod 431 is further provided with a pressure piece 435 that receives a downward external force.
  • the pusher assembly 700 has an expanded state and a folded state and is provided with a second locking member 710 that locks it in the deployed state and a second unlocking assembly 720 that drives the unlocking action of the second locking member 710, the push handle
  • the assembly 700 includes two push handles 730 disposed on the left and right. The inner ends of the two push handles 730 are rotatably connected to each other about the rotation axis F.
  • the side support assembly 800 has an unfolded state and a folded state and is provided with a third lock that locks it in the unfolded state. a component 810 and a third unlocking component 820 that drives an unlocking action of the third locking component 810.
  • the third unlocking component 820 includes a traction cord 821 and a rotating shaft G822.
  • One end of the traction cord 821 and the third locking component 810 are interlocked with each other, and the traction cord 821 is The other end is connected to the rotating shaft G822, and the pulling rope 821 is taken up or released with the rotation of the rotating shaft G822.
  • the rotating shaft G822 is rotatably connected to the push rod 600, and the outer end of the push rod 730 is interlocked with the rotating shaft G822, and the pushing assembly is
  • the folding action of the 700 drives the rotation of the rotating shaft G822, and the unfolding action of the pusher assembly 700 drives the rotation of the rotating shaft G822; the rotating shafts F, G are perpendicular to the plane of the two push rods 600.
  • the second locking member 710 includes a positioning ring gear 711 that is axially movably coupled to the rotary joint A712 of one of the push rods, and is positioned by the force of the elastic return member 713.
  • the ring gear 711 is locatingly coupled to the rotary joint B714 of the other push rod. Under the action of an external force, the positioning ring gear 711 is disengaged from the rotary joint B714 against the force of the elastic return member 713 to rotate the rotary joints A, B712, 714.
  • the second unlocking assembly 720 includes a second unlocking button disposed at the operating end of the positioning ring gear 711.
  • the second locking component 710 further includes a limiting structure 715.
  • the limiting structure 715 is radially movably coupled to the rotating joint A712. Under the force of the elastic restoring component 716, the limiting structure 715 is located. On the axial movement track of the ring gear 711, under the action of an external force, the limiting structure 715 overcomes the axial movement trajectory of the positioning ring gear 711 against the force of the elastic return member 716 to axially move the positioning ring gear 711, and the limit position The operating end of the structure 715 is provided with an unlocking handle 717.
  • the leash 821 is threaded into the cavity of the push rod 600.
  • the side support assembly 800 includes a second sliding member 831, a front link 832, and a rear link 833.
  • the second sliding member 831 is slidably coupled to the rear support bar 300. Rotatingly connecting the front support rod 100 and the second sliding member 831, the two ends of the rear link 833 are respectively rotatably connected to the push rod 600 and the second sliding member 831, and the upper end of the rear support rod 300 is fixed relative to the side armrest 834, front The upper end of the support rod 100 and the lower end of the push rod 600 are respectively rotatably connected to the side armrest 834;
  • the third locking member 810 includes a hook 811 and a slider 812.
  • the upper end of the hook 811 is rotatably coupled to the rear support bar 300.
  • the slider 812 is movably connected up and down on the hook 811 at the elastic reset member 813. Under the force, the lower end of the hook 811 is snap-connected with the second sliding member 831. Under the external force, the slider 812 overcomes the force of the elastic returning member 813 and cooperates with the second sliding member 831 to make the lower end of the hook 811.
  • the second sliding member 831 is released by rotating in a direction away from the rear support bar 300.
  • the second sliding component 831 is a sliding sleeve sleeved on the outer side of the rear support bar 300.
  • the outer side of the front support bar 100 is sleeved with a front fixing sleeve, and the two ends of the front connecting rod 832 are respectively rotatably connected.
  • the sleeve and the front fixing sleeve are sleeved on the outer side of the push rod 600, and the two ends of the rear link 833 are respectively rotatably connected to the sliding sleeve and the rear fixing sleeve.
  • the pulling rod 432 drives the ball 421 to retract into the middle support bar 431 against the restoring force of the elastic returning member 422 (based on the principle of the beveling fit), and then drives the middle support bar 431 upward.
  • the first sliding member 433 is slid relative to the middle support rod 431, the folding action of the rear cross member 400 is achieved, and the folding action of the rear cross member 400 drives the upward movement of the bottom support rod 500, and the upward movement of the bottom support rod 500 is driven.
  • the folding action of the cross brace assembly 200 is the folding action of the cross brace assembly 200.
  • a downward force is applied to the second unlocking button, and the pusher 730 is folded to drive the rotating shaft G822 to rotate, thereby driving the traction rope 831 to take up the wire, thereby driving the slider 812 to overcome the restoring force of the elastic returning member 813 to move off the second sliding member 831.
  • the unlocking of the side brace assembly 800 is achieved, thereby achieving the folding action of the front support bar 100, the rear support bar 300, and the push bar 600.
  • the above lateral folding process and the longitudinal folding process can be performed simultaneously.
  • a downward force is applied to the pressing block 435, and the middle support rod 431 descends, and then the ball 431 is retracted into the middle support rod 431 against the restoring force of the elastic returning member 422 under the action of the inclined surface of the pulling rod 432 (based on the principle of the inclined surface matching)
  • the first sliding member 433 slides up against the middle support rod 431 to realize the unfolding action of the rear cross member 400, and the unfolding motion of the rear cross member 400 drives the downward movement of the bottom support rod 500, and the bottom support rod 500
  • the downward movement drives the unfolding action of the front cross member 200.
  • the deployment of the front support bar 100, the rear support bar 300, and the push rod 600 drives the second sliding member 831 upward with respect to the rear support bar 300. Then, the slider 812 overcomes the elastic reset of the elastic return member 813 under the action of the second sliding member 831. The force enters the card slot of the second sliding member 831 (based on the principle of the ramp fit), pushing the pusher to deploy.
  • the side support assembly 800 includes a push rod connector 851, a front link 852, and a rear link 853.
  • the upper end of the push rod connector 851 is The lower end of the push rod 600 is hinged at point a, the lower end of the push rod connector 851 is hinged to the point b at the side arm 854, and the lower end of the push rod 600 is also hinged to the upper end of the rear link 853 at point c, and the middle portion of the rear link 853
  • the rear support bar 300 is hinged to the point c, and the upper end of the rear support bar 300 is fixedly connected to the side armrest 854.
  • the rear end of the front link 852 and the lower end of the rear link 853 are hinged at point e, the front end of the front link 852 is hinged to the point f at the front support bar 100, and the upper end of the front support bar 100 and the side armrest 854 are hinged at point f;
  • Abcd constitutes the first four-link structure, def constitutes the second four-link structure, and two four-link structures interlock with each other;
  • the third locking member 810 includes a slider 814 that is movably coupled to the push rod 600. Under the force of the elastic return member 815, the slider 814 extends the push rod 600 and snaps the push rod connector 851. Under the action of an external force, the slider 814 is retracted into the push rod 600 against the force of the elastic return member 815, and the slider is coupled to the traction cord 821.
  • the pulling rod 432 drives the ball 421 to retract into the middle support bar 431 against the restoring force of the elastic returning member 422 (based on the principle of the beveling fit), and then drives the middle support bar 431 upward.
  • the first sliding member 433 is slid relative to the middle support rod 431, the folding action of the rear cross member 400 is achieved, and the folding action of the rear cross member 400 drives the upward movement of the bottom support rod 500, and the upward movement of the bottom support rod 500 is driven.
  • the folding action of the cross brace assembly 200 is the folding action of the cross brace assembly 200.
  • a downward force is applied to the second unlocking button, and the pusher 730 is folded to drive the rotating shaft G822 to rotate, thereby driving the pulling rope 831 to take up the wire, thereby driving the slider 814 to overcome the restoring force of the elastic returning member 815 to move off the push rod connecting member 851.
  • the unlocking of the side brace assembly 800 is achieved, thereby achieving the folding action of the front support bar 100, the rear support bar 300, and the push bar 600.
  • the above lateral folding process and the longitudinal folding process can be performed simultaneously.
  • a downward force is applied to the pressing block 435, and the middle support rod 431 descends, and then the ball 431 is retracted into the middle support rod 431 against the restoring force of the elastic returning member 422 under the action of the inclined surface of the pulling rod 432 (based on the principle of the inclined surface matching)
  • the first sliding member 433 slides up against the middle support rod 431 to realize the unfolding action of the rear cross member 400, and the unfolding motion of the rear cross member 400 drives the downward movement of the bottom support rod 500, and the bottom support rod 500
  • the downward movement drives the unfolding action of the front cross member 200.
  • the deployment of the front support bar 100, the rear support bar 300, and the push rod 600 drives the second sliding member 831 upward with respect to the rear support bar 300. Then, the slider 814 overcomes the elastic reset of the elastic return member 815 under the action of the push rod connector 851. The force enters the slot of the push rod connector 851 (based on the principle of the ramp fit), pushes the pusher to deploy, and realizes the longitudinal deployment of the frame.

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

Abstract

一种儿童推车的车轮支架收拢机构，包括两前支撑杆（100）、前横撑组件（200）、两后支撑杆（300）、后横撑组件（400）以及底部支撑杆（500），两前支撑杆左右设置并用于安装前轮组件，前横撑组件设置于两前支撑杆之间并具有展开状态和折叠状态，两后支撑杆左右设置并用于安装后轮组件，后横撑组件设置于两后支撑杆之间并具有展开状态和折叠状态，底部支撑杆前、后端分别与前、后横撑组件联动设置。后横撑组件的折叠动作通过底部支撑杆带动前横撑组件的折叠动作，后横撑组件折叠方便、快速，且折叠后的车架体积更小。还公开了采用上述车轮支架收拢机构的儿童推车的车架。

Description

一种儿童推车的车轮支架收拢机构及车架 技术领域
本发明涉及童车领域，具体涉及一种儿童推车的车轮支架收拢机构及车架。
背景技术
儿童推车或婴儿推车是一种婴幼儿养护必不可少的工具之一，特别是随着人们生活节奏的逐渐加快，为了节约婴儿陪护成本，婴儿车便是婴儿成长过程中必不可少的用品。常见的婴儿车的底架多为X形支架，对于带孩子的老人和女士来说，婴儿车的折叠和打开费时、费力甚至无法完成，而且折叠后的长度较大，已经不能满足现代婴儿车的需求。
发明内容
本发明的目的是提供一种儿童推车的车轮支架收拢机构，其只需要上推或下压动作，即可实现车轮支架的解锁和折叠，一步完成。
为达到上述目的，本发明采用的技术方案是：一种儿童推车的车轮支架收拢机构，包括：
-两前支撑杆，二者左右设置并用于安装前轮组件；
-前横撑组件，其设置于所述两前支撑杆之间并具有展开状态和折叠状态；
-两后支撑杆，二者左右设置并用于安装后轮组件；
-后横撑组件，其设置于所述两后支撑杆之间并具有展开状态和折叠状态；
其中，所述车轮支架收拢机构还包括底部支撑杆，所述底部支撑杆前端与所述前横撑组件联动设置，所述底部支撑杆后端与所述后横撑组件联动设置，所述后横撑组件的折叠动作带动所述底部支撑杆后端的上行动作，所述底部支撑杆的上行动作带动所述前横撑组件的折叠动作，所述后横撑组件的 展开动作带动所述底部支撑杆后端的下行动作，所述底部支撑杆的下行动作带动所述前横撑组件的展开动作。
上述技术方案中，所述前横撑组件包括第一支撑杆，所述第一支撑杆包括左右设置的两支撑接头和左右设置的两第一连杆，所述两前支撑杆与所述两支撑接头的外端通过转轴A分别可转动的连接，所述两支撑接头的内端与所述两第一连杆的外端通过转轴B分别可转动的连接，所述两第一连杆的内端通过转轴C相互可转动的连接，所述转轴A沿左右方向延伸，所述转轴B，C垂直于所述转轴A的延伸方向并垂直于所述底部支撑杆的延伸方向；
所述后横撑组件包括第二支撑杆，所述第二支撑杆包括左右设置的两第二连杆，所述两后支撑杆与所述两第二连杆的外端通过转轴D分别可转动的连接，所述两第二连杆的内端通过转轴E相互可转动的连接，所述转轴D，E垂直于所述两后支撑杆所在平面。
上述技术方案中，所述后横撑组件还设有将其锁定于展开状态的第一锁定部件和驱动所述第一锁定部件的解锁动作的第一解锁组件，所述第一解锁组件包括中支撑杆和牵引杆，所述中支撑杆与所述后横撑组件联动设置，所述牵引杆沿上下方向可移动的连接在所述中支撑杆上并与所述第一锁定部件联动设置，所述牵引杆的上行动作依次带动所述第一锁定部件的解锁动作和所述中支撑杆的上行动作，所述中支撑杆的上行动作带动所述后横撑组件的折叠动作，所述牵引杆的下行动作依次带动所述中支撑杆的下行动作和所述第一锁定部件的锁定动作，所述中支撑杆的下行动作带动所述后横撑组件的展开动作。
上述技术方案中，所述第二支撑杆设置为三道，包括上支撑杆、斜支撑杆以及下支撑杆，所述上支撑杆包括左右设置的两段上连杆，所述斜支撑杆包括左右设置的两段斜连杆，所述下支撑杆包括左右设置的两段下连杆，所述中支撑杆上设有一可相对其滑动的第一滑动部件，所述第一锁定部件设于 所述中支撑杆和所述第一滑动部件之间，所述两段上连杆的外端分别可转动的连接所述两后支撑杆上，所述两段上连杆的内端分别可转动的连接所述中支撑杆上，所述两段斜连杆的外端分别可转动的连接所述两后支撑杆上，所述两段斜连杆的内端分别可转动的连接所述中支撑杆上，所述两段下连杆的外端分别可转动的连接所述两后支撑杆上，所述两段下连杆的内端分别可转动的连接所述中支撑杆上。
上述技术方案中，所述斜连杆的外端靠近所述下连杆，所述后横撑组件在展开状态下，所述第一滑动部件靠近所述上连杆，所述后横撑组件在折叠状态下，所述第一滑动部件靠近所述下连杆。
上述技术方案中，所述牵引杆与所述第一锁定部件通过斜面结构配合，所述第一锁定部件包括卡珠，所述卡珠沿前后方向可伸缩的连接在所述中支撑杆上，在弹性复位部件的作用力下，所述卡珠伸出所述中支撑杆并卡接所述第一滑动部件，在外力作用下，所述牵引杆的斜面结构与所述卡珠的斜面结构配合以带动所述卡珠克服所述弹性复位部件的作用力缩进所述中支撑杆之内。
本发明还提供另外一个技术方案：一种儿童推车的车架，包括：
-如上所述的车轮支架收拢机构；
-两推杆，二者左右设置并用于安装推把组件，所述推把组件具有展开状态和折叠状态并设有将其锁定于展开状态的第二锁定部件和驱动所述第二锁定部件的解锁动作的第二解锁组件，所述推把组件包括左右设置的两推把，所述两推把的内端绕转轴F相互可转动的连接；
-侧撑组件，其设置在位于同一侧的前支撑杆、后支撑杆以及推杆之间，所述侧撑组件具有展开状态和折叠状态并设有将其锁定于展开状态的第三锁定部件和驱动所述第三锁定部件的解锁动作的第三解锁组件；
所述第三解锁组件包括牵引绳和转轴G，所述牵引绳的一端与所述第三 锁定部件相互联动，所述牵引绳的另一端连接于所述转轴G上且所述牵引绳随着所述转轴G的转动收线或放线，所述转轴G可转动的连接于所述推杆上，所述推把的外端与所述转轴G相互联动，所述推把组件的折叠动作带动所述转轴G的转动收线动作，所述推把组件的展开动作带动所述转轴G的转动放线动作；所述转轴F，G垂直于所述两推杆所在平面。
上述技术方案中，所述第二锁定部件包括定位齿圈，所述定位齿圈轴向可移动的连接于其中一根所述推把的旋转接头A上，在弹性复位部件的作用力下，所述定位齿圈与另一根所述推把的旋转接头B周向齿定位连接，在外力作用下，所述定位齿圈克服弹性复位部件的作用力与所述旋转接头B脱离以使所述旋转接头A，B可转动的连接，所述旋转接头A，B中，其中一者为所述转轴F，另一者为轴套。
上述技术方案中，所述第二锁定部件还包括限位结构，所述限位结构径向可移动的连接于所述旋转接头A上，在弹性复位部件的作用力下，所述限位结构位于所述定位齿圈的轴向移动轨迹上，在外力作用下，所述限位结构克服所述弹性复位部件的作用力避开所述定位齿圈的轴向移动轨迹以使所述定位齿圈轴向移动，所述限位结构的操作端设有解锁拉手。
上述技术方案中，所述牵引绳穿设于所述推杆的空腔中。
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：
1)本发明公开的儿童推车的车轮支架收拢机构，后横撑组件的折叠动作通过底部支撑杆带动前横撑组件的折叠动作，后横撑组件折叠方便、快速，非常方便老人和女士使用，且折叠后的车架体积更小；
2)本发明公开的儿童推车的车轮支架收拢机构，牵引杆的上行动作带动第一锁定部件的解锁、后横撑组件的折叠以及前横撑组件的折叠，操作非常简单方便；
3)本发明公开的儿童推车的车架，推把组件的折叠动作带动侧撑组件 的解锁动作，操作简单省时省力。
附图说明
图1是本发明公开的儿童推车的车架展开状态的立体图。
图2是本发明公开的儿童推车的车架展开状态的侧视图。
图3是本发明公开的儿童推车的车架半折叠状态的侧视图。
图4是本发明公开的前横撑组件展开状态的俯视图。
图5是本发明公开的前横撑组件折叠状态的俯视图
图6是本发明公开的后横撑组件展开状态的后视图。
图7是本发明公开的后横撑组件展开状态的侧视图。
图8是本发明公开的后横撑组件折叠状态的后视图。
图9是本发明公开的后横撑组件折叠状态的侧视图。
图10是本发明公开的推把展开状态的俯视图。
图11是本发明公开的推把折叠过程的俯视图。
图12是本发明公开的第二锁定部件锁紧状态的结构示意图。
图13是本发明公开的第三锁定部件锁紧状态的结构示意图。
图14是本发明公开的第三锁定部件解锁状态的结构示意图。
图15是本发明公开的儿童推车的车架展开状态的立体图。
图16是本发明公开的儿童推车的车架展开状态的侧视图。
图17是本发明公开的儿童推车的车架半折叠状态的侧视图。
其中：100、前支撑杆；200、前横撑组件；210、支撑接头；220、第一连杆；300、后支撑杆；400、后横撑组件；410、第二连杆；411、上连杆；412、斜连杆；413、下连杆；420、第一锁定部件；421、卡珠；422、弹性复位部件；430、第一解锁组件；431、中支撑杆；432、牵引杆；433、第一滑动部件；434、第一解锁按钮；435、压块；500、底部支撑杆；600、推杆；700、推把组件；710、第二锁定部件；711、定位齿圈；712、旋转接头A； 713、弹性复位部件；714、旋转接头B；715、限位结构；716、弹性复位部件；717、解锁拉手；720、第二解锁组件；730、推把；800、侧撑组件；810、第三锁定部件；811、卡勾；812、滑块；813、弹性复位部件；820、第三解锁组件；821、牵引绳；822、转轴G；831、第二滑动部件；832、前连杆；833、后连杆；834、侧扶手。
具体实施方式
结合附图及实施例对本发明作进一步描述：
参见图1至图14，如其中的图例所示，一种儿童推车的车架，包括：
-两前支撑杆100，二者左右设置并用于安装前轮组件；
-前横撑组件200，其设置于两前支撑杆100之间并具有展开状态和折叠状态；
-两后支撑杆300，二者左右设置并用于安装后轮组件；
-后横撑组件400，其设置于两后支撑杆300之间并具有展开状态和折叠状态；
-底部支撑杆500，其前端和后端分别与前横撑组件200和后横撑组件400联动设置，后横撑组件400的折叠动作带动底部支撑杆500后端的上行动作，底部支撑杆500的上行动作带动前横撑组件200的折叠动作，后横撑组件400的展开动作带动底部支撑杆500后端的下行动作，底部支撑杆500的下行动作带动前横撑组件200的展开动作；
--两推杆600，二者左右设置并用于安装推把组件700；
-侧撑组件800，其设置在位于同一侧的前支撑杆100、后支撑杆300以及推杆600之间。
上述技术方案中，后横撑组件的折叠动作通过底部支撑杆带动前横撑组件的折叠动作，后横撑组件折叠方便、快速，非常方便老人和女士使用，且折叠后的车架体积更小。
一种实施方式中，前横撑组件200包括第一支撑杆，第一支撑杆包括左右设置的两支撑接头210和左右设置的两第一连杆220，两前支撑杆100与两支撑接头210的外端通过转轴A分别可转动的连接，两支撑接头210的内端与两第一连杆220的外端通过转轴B分别可转动的连接，两第一连杆220的内端通过转轴C相互可转动的连接，转轴A沿左右方向延伸，转轴B，C垂直于转轴A的延伸方向并垂直于底部支撑杆500的延伸方向；
后横撑组件400包括第二支撑杆，第二支撑杆包括左右设置的两第二连杆410，两后支撑杆300与两第二连杆410的外端通过转轴D分别可转动的连接，两第二连杆410的内端通过转轴E相互可转动的连接，转轴D，E垂直于两后支撑杆300所在平面。
一种实施方式中，后横撑组件400还设有将其锁定于展开状态的第一锁定部件420和驱动第一锁定部件420的解锁动作的第一解锁组件430，第一解锁组件430包括中支撑杆431和牵引杆432，中支撑杆431与后横撑组件400联动设置，牵引杆432沿上下方向可移动的连接在中支撑杆431上并与第一锁定部件420联动设置，牵引杆432的上行动作依次带动第一锁定部件420的解锁动作和中支撑杆431的上行动作，中支撑杆431的上行动作带动后横撑组件400的折叠动作，牵引杆432的下行动作依次带动中支撑杆431的下行动作和第一锁定部件420的锁定动作，中支撑杆431的下行动作带动后横撑组件400的展开动作。
一种实施方式中，上述第二支撑杆设置为三道，包括上支撑杆、斜支撑杆以及下支撑杆，上支撑杆包括左右设置的两段上连杆411，斜支撑杆包括左右设置的两段斜连杆412，下支撑杆包括左右设置的两段下连杆413，中支撑杆431上设有一可相对其滑动的第一滑动部件433，第一锁定部件420设于中支撑杆431和第一滑动部件433之间，两段上连杆411的外端分别可转动的连接两后支撑杆300上，两段上连杆411的内端分别可转动的连接中 支撑杆431上，两段斜连杆412的外端分别可转动的连接两后支撑杆300上，两段斜连杆412的内端分别可转动的连接中支撑杆431上，两段下连杆413的外端分别可转动的连接所述两后支撑杆300上，两段下连杆413的内端分别可转动的连接中支撑杆431上。
一种实施方式中，斜连杆412的外端靠近下连杆413，后横撑组件400在展开状态下，第一滑动部件433靠近上连杆411，后横撑组件400在折叠状态下，第一滑动部件433靠近下连杆413。
一种实施方式中，牵引杆432与第一锁定部件420通过斜面结构配合，第一锁定部件420包括卡珠421，卡珠421沿前后方向可伸缩的连接在中支撑杆431上，在弹性复位部件422的作用力下，卡珠421伸出中支撑杆431并卡接第一滑动部件433，在外力作用下，牵引杆432的斜面结构与卡珠421的斜面结构配合以带动卡珠421克服弹性复位部件422的作用力缩进中支撑杆431之内。
一种实施方式中，卡珠421连接于一弹簧片上，弹簧片作为弹性复位部件并设有斜面结构。
一种实施方式中，牵引杆432的底部设有承受向上外力的第一解锁按钮434。
一种实施方式中，中支撑杆431的底部还设有承受向下外力的压块435。
一种实施方式中，推把组件700具有展开状态和折叠状态并设有将其锁定于展开状态的第二锁定部件710和驱动第二锁定部件710的解锁动作的第二解锁组件720，推把组件700包括左右设置的两推把730，两推把730的内端绕转轴F相互可转动的连接，侧撑组件800具有展开状态和折叠状态并设有将其锁定于展开状态的第三锁定部件810和驱动第三锁定部件810的解锁动作的第三解锁组件820，第三解锁组件820包括牵引绳821和转轴G822，牵引绳821的一端与第三锁定部件810相互联动，牵引绳821的另一端连接 于转轴G822上且牵引绳821随着转轴G822的转动收线或放线，转轴G822可转动的连接于推杆600上，推把730的外端与转轴G822相互联动，推把组件700的折叠动作带动转轴G822的转动收线动作，推把组件700的展开动作带动转轴G822的转动放线动作；转轴F，G垂直于两推杆600所在平面。
一种实施方式中，第二锁定部件710包括定位齿圈711，定位齿圈711轴向可移动的连接于其中一根推杆的旋转接头A712上，在弹性复位部件713的作用力下，定位齿圈711与另一根推杆的旋转接头B714齿定位连接，在外力作用下，定位齿圈711克服弹性复位部件713的作用力与旋转接头B714脱离以使旋转接头A，B712,714可转动的连接，第二解锁组件720包括设于定位齿圈711的操作端的第二解锁按钮。
一种实施方式中，第二锁定部件710还包括限位结构715，限位结构715径向可移动的连接于旋转接头A712上，在弹性复位部件716的作用力下，限位结构715位于定位齿圈711的轴向移动轨迹上，在外力作用下，限位结构715克服弹性复位部件716的作用力避开定位齿圈711的轴向移动轨迹以使定位齿圈711轴向移动，限位结构715的操作端设有解锁拉手717。
一种实施方式中，牵引绳821穿设于推杆600的空腔中。
一种实施方式中，侧撑组件800包括第二滑动部件831、前连杆832以及后连杆833，第二滑动部件831滑动连接于后支撑杆300上，前连杆832的两端分别可转动的连接前支撑杆100和第二滑动部件831，后连杆833的两端分别可转动的连接推杆600和第二滑动部件831，后支撑杆300的上端与侧扶手834相对固定，前支撑杆100的上端和推杆600的下端分别可转动的连接于侧扶手834上；
第三锁定部件810包括卡勾811和滑块812，卡勾811的上端可转动的连接在后支撑杆300上，滑块812上下可移动的连接在卡勾811上，在弹性复位部件813的作用力下，卡勾811的下端与第二滑动部件831卡接连接， 在外力作用下，滑块812克服弹性复位部件813的作用力与第二滑动部件831斜面配合以使卡勾811的下端向远离后支撑杆300的方向旋转释放第二滑动部件831。
一种实施方式中，第二滑动部件831为套设于后支撑杆300外侧的滑套，前支撑杆100的外侧套设有前固定套，前连杆832的两端分别可转动的连接滑套和前固定套，推杆600的外侧套设有后固定套，后连杆833的两端分别可转动的连接滑套和后固定套。
以下为采用上述技术方案的儿童推车的横向收拢过程：
给第一解锁按钮一个向上的力，牵引杆432驱动卡珠421克服弹性复位部件422的恢复力缩回到中支撑杆431中(基于斜面配合的原理)，然后带动中支撑杆431上行，此时，第一滑动部件433相对中支撑杆431下滑，实现后横撑组件400的折叠动作，后横撑组件400的折叠动作带动底部支撑杆500的上行运动，底部支撑杆500的上行运动带动前横撑组件200的折叠动作。
以下为采用上述技术方案的儿童推车的纵向折叠过程：
给第二解锁按钮一个向下的力，推动推把730折叠，带动转轴G822转动，进而带动牵引绳831收线，进而带动滑块812克服弹性复位部件813的恢复力上行脱离第二滑动部件831(基于斜面配合的原理)，实现侧撑组件800的解锁，进而实现前支撑杆100、后支撑杆300以及推杆600的折叠动作。
上述横向收拢过程与纵向折叠过程可同时进行。
以下为采用上述技术方案的儿童推车的横向展开过程：
给压块435一个向下的力，中支撑杆431下行，然后卡珠431在牵引杆432的斜面作用下克服弹性复位部件422的恢复力缩回到中支撑杆431中(基于斜面配合的原理)，此时，第一滑动部件433相对中支撑杆431上滑，实 现后横撑组件400的展开动作，后横撑组件400的展开动作带动底部支撑杆500的下行运动，底部支撑杆500的下行运动带动前横撑组件200的展开动作。
以下为采用上述技术方案的儿童推车的纵向展开过程：
前支撑杆100、后支撑杆300以及推杆600的展开带动第二滑动部件831相对后支撑杆300上行，然后，滑块812在第二滑动部件831的作用下克服弹性复位部件813的弹性复位作用力进入第二滑动部件831的卡槽中(基于斜面配合的原理)，推动推把展开。
参见图15至图17，如其中的图例所示，另一种实施方式中，侧撑组件800包括推杆连接件851、前连杆852以及后连杆853，推杆连接件851的上端与推杆600的下端铰接于a点，推杆连接件851的下端与侧扶手854铰接于b点，推杆600的下端还与后连杆853的上端铰接于c点，后连杆853的中段与后支撑杆300铰接于c点，后支撑杆300的上端与侧扶手854固定连接，
前连杆852的后端与后连杆853的下端铰接于e点，前连杆852的前端与前支撑杆100铰接于f点，前支撑杆100的上端与侧扶手854铰接于f点；
abcd构成第一个四连杆结构，def构成第二个四连杆结构，两个四连杆结构相互联动；
第三锁定部件810包括滑块814，滑块814可移动连于推杆600上，在弹性复位部件815的作用力下，滑块814伸出推杆600并卡接推杆连接件851，在外力作用下，滑块814克服弹性复位部件815的作用力缩进推杆600之内，滑块与牵引绳821连接。
以下为采用上述技术方案的儿童推车的横向收拢过程：
给第一解锁按钮一个向上的力，牵引杆432驱动卡珠421克服弹性复位部件422的恢复力缩回到中支撑杆431中(基于斜面配合的原理)，然后带 动中支撑杆431上行，此时，第一滑动部件433相对中支撑杆431下滑，实现后横撑组件400的折叠动作，后横撑组件400的折叠动作带动底部支撑杆500的上行运动，底部支撑杆500的上行运动带动前横撑组件200的折叠动作。
以下为采用上述技术方案的儿童推车的纵向折叠过程：
给第二解锁按钮一个向下的力，推动推把730折叠，带动转轴G822转动，进而带动牵引绳831收线，进而带动滑块814克服弹性复位部件815的恢复力上行脱离推杆连接件851(基于斜面配合的原理)，实现侧撑组件800的解锁，进而实现前支撑杆100、后支撑杆300以及推杆600的折叠动作。
上述横向收拢过程与纵向折叠过程可同时进行。
以下为采用上述技术方案的儿童推车的横向展开过程：
给压块435一个向下的力，中支撑杆431下行，然后卡珠431在牵引杆432的斜面作用下克服弹性复位部件422的恢复力缩回到中支撑杆431中(基于斜面配合的原理)，此时，第一滑动部件433相对中支撑杆431上滑，实现后横撑组件400的展开动作，后横撑组件400的展开动作带动底部支撑杆500的下行运动，底部支撑杆500的下行运动带动前横撑组件200的展开动作。
以下为采用上述技术方案的儿童推车的纵向展开过程：
前支撑杆100、后支撑杆300以及推杆600的展开带动第二滑动部件831相对后支撑杆300上行，然后，滑块814在推杆连接件851的作用下克服弹性复位部件815的弹性复位作用力进入推杆连接件851的卡槽中(基于斜面配合的原理)，推动推把展开，实现车架的纵向展开。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况 下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种儿童推车的车轮支架收拢机构，包括：
    -两前支撑杆(100)，二者左右设置并用于安装前轮组件；
    -前横撑组件(200)，其设置于所述两前支撑杆(100)之间并具有展开状态和折叠状态；
    -两后支撑杆(300)，二者左右设置并用于安装后轮组件；
    -后横撑组件(400)，其设置于所述两后支撑杆(300)之间并具有展开状态和折叠状态；
    其特征在于，所述车轮支架收拢机构还包括底部支撑杆(500)，所述底部支撑杆(500)前端与所述前横撑组件(200)联动设置，所述底部支撑杆(500)后端与所述后横撑组件(400)联动设置，所述后横撑组件(400)的折叠动作带动所述底部支撑杆(500)后端的上行动作，所述底部支撑杆(500)的上行动作带动所述前横撑组件(200)的折叠动作，所述后横撑组件(400)的展开动作带动所述底部支撑杆(500)后端的下行动作，所述底部支撑杆(500)的下行动作带动所述前横撑组件(200)的展开动作。
  2. 根据权利要求1所述的儿童推车的车轮支架收拢机构，其特征在于，所述前横撑组件(200)包括第一支撑杆，所述第一支撑杆包括左右设置的两支撑接头(210)和左右设置的两第一连杆(220)，所述两前支撑杆(100)与所述两支撑接头(210)的外端通过转轴A分别可转动的连接，所述两支撑接头(210)的内端与所述两第一连杆(220)的外端通过转轴B分别可转动的连接，所述两第一连杆(220)的内端通过转轴C相互可转动的连接，所述转轴A沿左右方向延伸，所述转轴B，C垂直于所述转轴A的延伸方向并垂直于所述底部支撑杆(500)的延伸方向；
    所述后横撑组件(400)包括第二支撑杆，所述第二支撑杆包括左右设置的两第二连杆(410)，所述两后支撑杆(300)与所述两第二连杆(410)的外端通过转轴D分别可转动的连接，所述两第二连杆(410)的内端通过转轴E 相互可转动的连接，所述转轴D，E垂直于所述两后支撑杆(300)所在平面。
  3. 根据权利要求2所述的儿童推车的车轮支架收拢机构，其特征在于，所述后横撑组件(400)还设有将其锁定于展开状态的第一锁定部件(420)和驱动所述第一锁定部件(420)的解锁动作的第一解锁组件(430)，所述第一解锁组件(430)包括中支撑杆(431)和牵引杆(432)，所述中支撑杆(431)与所述后横撑组件(400)联动设置，所述牵引杆(432)沿上下方向可移动的连接在所述中支撑杆(431)上并与所述第一锁定部件(420)联动设置，所述牵引杆(432)的上行动作依次带动所述第一锁定部件(420)的解锁动作和所述中支撑杆(431)的上行动作，所述中支撑杆(431)的上行动作带动所述后横撑组件(400)的折叠动作，所述牵引杆(432)的下行动作依次带动所述中支撑杆(431)的下行动作和所述第一锁定部件(420)的锁定动作，所述中支撑杆(431)的下行动作带动所述后横撑组件(400)的展开动作。
  4. 根据权利要求3所述的儿童推车的车轮支架收拢机构，其特征在于，所述第二支撑杆设置为三道，包括上支撑杆、斜支撑杆以及下支撑杆，所述上支撑杆包括左右设置的两段上连杆(411)，所述斜支撑杆包括左右设置的两段斜连杆(412)，所述下支撑杆包括左右设置的两段下连杆(413)，所述中支撑杆(431)上设有一可相对其滑动的第一滑动部件(433)，所述第一锁定部件(420)设于所述中支撑杆(431)和所述第一滑动部件(433)之间，所述两段上连杆(411)的外端分别可转动的连接所述两后支撑杆(300)上，所述两段上连杆(411)的内端分别可转动的连接所述中支撑杆(431)上，所述两段斜连杆(412)的外端分别可转动的连接所述两后支撑杆(300)上，所述两段斜连杆(412)的内端分别可转动的连接所述中支撑杆(431)上，所述两段下连杆(413)的外端分别可转动的连接所述两后支撑杆(300)上，所述两段下连杆(413)的内端分别可转动的连接所述中支撑杆(431)上。
  5. 根据权利要求4所述的儿童推车的车轮支架收拢机构，其特征在于，所 述斜连杆(412)的外端靠近所述下连杆(413)，所述后横撑组件(400)在展开状态下，所述第一滑动部件(433)靠近所述上连杆(411)，所述后横撑组件(400)在折叠状态下，所述第一滑动部件(433)靠近所述下连杆(413)。
  6. 根据权利要求4或5任一所述的儿童推车的车轮支架收拢机构，其特征在于，所述牵引杆(432)与所述第一锁定部件(420)通过斜面结构配合，所述第一锁定部件(420)包括卡珠(421)，所述卡珠(421)沿前后方向可伸缩的连接在所述中支撑杆(431)上，在弹性复位部件(422)的作用力下，所述卡珠(421)伸出所述中支撑杆(431)并卡接所述第一滑动部件(433)，在外力作用下，所述牵引杆(432)的斜面结构与所述卡珠(421)的斜面结构配合以带动所述卡珠(421)克服所述弹性复位部件(422)的作用力缩进所述中支撑杆(431)之内。
  7. 一种儿童推车的车架，其特征在于，包括：
    -如权利要求1至6任一所述的车轮支架收拢机构；
    -两推杆(600)，二者左右设置并用于安装推把组件(700)，所述推把组件(700)具有展开状态和折叠状态并设有将其锁定于展开状态的第二锁定部件(710)和驱动所述第二锁定部件(710)的解锁动作的第二解锁组件(720)，所述推把组件(700)包括左右设置的两推把(730)，所述两推把(730)的内端绕转轴F相互可转动的连接；
    -侧撑组件(800)，其设置在位于同一侧的前支撑杆(100)、后支撑杆(300)以及推杆(600)之间，所述侧撑组件(800)具有展开状态和折叠状态并设有将其锁定于展开状态的第三锁定部件(810)和驱动所述第三锁定部件(810)的解锁动作的第三解锁组件(820)；
    所述第三解锁组件(820)包括牵引绳(821)和转轴G(822)，所述牵引绳(821)的一端与所述第三锁定部件(810)相互联动，所述牵引绳(821)的另一端连接于所述转轴G(822)上且所述牵引绳(821)随着所述转轴G(822) 的转动收线或放线，所述转轴G(822)可转动的连接于所述推杆(600)上，所述推把(730)的外端与所述转轴G(822)相互联动，所述推把组件(700)的折叠动作带动所述转轴G(822)的转动收线动作，所述推把组件(700)的展开动作带动所述转轴G(822)的转动放线动作；所述转轴F，G垂直于所述两推杆(600)所在平面。
  8. 根据权利要求7所述的儿童推车的车架，其特征在于，所述第二锁定部件(710)包括定位齿圈(711)，所述定位齿圈(711)轴向可移动的连接于其中一根所述推把(730)的旋转接头A(712)上，在弹性复位部件(713)的作用力下，所述定位齿圈(711)与另一根所述推把(730)的旋转接头B(714)周向齿定位连接，在外力作用下，所述定位齿圈(711)克服弹性复位部件(713)的作用力与所述旋转接头B(714)脱离以使所述旋转接头A，B(712,714)可转动的连接，所述旋转接头A，B(712,714)中，其中一者为所述转轴F，另一者为轴套。
  9. 根据权利要求8所述的儿童推车的车架，其特征在于，所述第二锁定部件(710)还包括限位结构(715)，所述限位结构(715)径向可移动的连接于所述旋转接头A(712)上，在弹性复位部件(716)的作用力下，所述限位结构(715)位于所述定位齿圈(711)的轴向移动轨迹上，在外力作用下，所述限位结构(715)克服所述弹性复位部件(716)的作用力避开所述定位齿圈(711)的轴向移动轨迹以使所述定位齿圈(711)轴向移动，所述限位结构(715)的操作端设有解锁拉手(717)。
  10. 根据权利要求7所述的儿童推车的车架，其特征在于，所述牵引绳(821)穿设于所述推杆(600)的空腔中。
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