US20200391781A1 - Stroller - Google Patents

Stroller Download PDF

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Publication number
US20200391781A1
US20200391781A1 US16/474,399 US201916474399A US2020391781A1 US 20200391781 A1 US20200391781 A1 US 20200391781A1 US 201916474399 A US201916474399 A US 201916474399A US 2020391781 A1 US2020391781 A1 US 2020391781A1
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US
United States
Prior art keywords
handlebar
locking
rear leg
rotatably connected
stroller
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US16/474,399
Other languages
English (en)
Inventor
Xiaofeng Wang
Shunping Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongshan Kingmoon Children Products Co Ltd
Original Assignee
Zhongshan Kingmoon Children Products Co Ltd
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 CN201810186731.8A external-priority patent/CN108275192B/zh
Priority claimed from CN201820312244.7U external-priority patent/CN207931790U/zh
Priority claimed from CN201810647800.0A external-priority patent/CN108860280B/zh
Application filed by Zhongshan Kingmoon Children Products Co Ltd filed Critical Zhongshan Kingmoon Children Products Co Ltd
Assigned to ZHONGSHAN KINGMOON CHILDREN PRODUCTS CO. LTD. reassignment ZHONGSHAN KINGMOON CHILDREN PRODUCTS CO. LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WANG, XIAOFENG, YANG, Shunping
Publication of US20200391781A1 publication Critical patent/US20200391781A1/en
Abandoned legal-status Critical Current

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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
    • B62B7/068—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable by sliding a bushing along a rod, e.g. like folding means of an umbrella
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/10—Perambulator bodies; Equipment therefor
    • B62B9/102—Perambulator bodies; Equipment therefor characterized by details of the seat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/10—Perambulator bodies; Equipment therefor
    • B62B9/102—Perambulator bodies; Equipment therefor characterized by details of the seat
    • B62B9/104—Perambulator bodies; Equipment therefor characterized by details of the seat with adjustable or reclining backrests
    • 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
    • B62B2205/20—Catches; Locking or releasing an articulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/20—Handle bars; Handles

Definitions

  • the technical field relates to mechanical, wheeled devices including a stroller, and more particularly to a stroller that is conveniently folded.
  • a stroller is a functional carriage designed to facilitate the outdoor activities of a baby or other small item, greatly reducing the burden of carrying the baby or other small item when going out.
  • conventional strollers are generally foldable in order to reduce space occupation.
  • most conventional strollers still have the following defects: 1. They cannot be fully folded and still occupy a large space after being folded, which is not conducive to carrying and transporting; 2. The structure is complex and the production cost is high. 3. Most conventional strollers need to be collapsed manually, and the collapsing operation is rather complicated.
  • An objective of the present invention is to address the defects of the prior art, thereby providing a stroller that has a small size and a simple structure.
  • the present invention adopts the following technical solution:
  • a stroller comprising: a frame that can be collapsed from an unfolded state to a folded state, the frame comprising a front leg set, a rear leg set, a seat set, a side armrest, a handlebar set, and a slider, the upper end of the side armrest being rotatably connected to the slider, the lower end of the side armrest being rotatably connected to the upper end of the rear leg set, the middle portion of the rear leg set being rotatably connected to the lower end of the handlebar set, at least one of the upper end of the rear leg set and the lower end of the side armrest being rotatably connected to the upper end of the front leg set, the middle portion of the front leg set being rotatably connected to the front end of the seat set, the rear end of the seat set being rotatably connected to the lower end of the handlebar set, in particular via a connecting member, and the slider being capable of sliding along the length of the handlebar set; a front wheel assembly, disposed at a front portion of the bottom
  • a stroller may include a frame, which is collapsible from an unfolded state to a folded state, the frame comprising a front leg set, a rear leg set, a seat set, a side armrest, a handlebar set, and a slider, the upper end of the side armrest being rotatably connected to the slider, the lower end of the side armrest being rotatably connected to the upper end of the rear leg set, the middle portion of the rear leg set being rotatably connected to the lower end of the handlebar set, at least one of the upper end of the rear leg set and the lower end of the side armrest being rotatably connected to the upper end of the front leg set, the middle portion of the front leg set being rotatably connected to the seat set, the rear end of the seat set being rotatably connected to the lower end of the handlebar set, in particular via a connecting member, and the slider being capable of sliding along the length of the handlebar set, a front wheel assembly,
  • the stroller includes the locking mechanism with a locking pin and a locking hole, the locking pin being disposed on the handlebar set, the locking hole being disposed in the slider, the frame being in a locked state when the locking pin is inserted into the locking hole, and the frame being in an unlocked state when the locking pin is disengaged from the locking hole.
  • the locking pin includes a stopper portion and a locking portion that extends laterally from the stopper portion, the locking portion being inserted into the locking hole, and the stopper portion being limited to one side of the locking hole.
  • the handlebar set includes an upper handlebar set and a lower handlebar set, and a joint head disposed between the upper handlebar set and the lower handlebar set.
  • the locking mechanism further includes a spring, a central portion of the locking portion is provided with a cylindrical support portion, the locking portion is recessed with an accommodating space, the lower handlebar set comprises an insert, one end of the spring extends into the accommodating space and abuts against the cylindrical support portion, and the other end of the spring abuts against the insert.
  • the locking mechanism further includes a cord, in particular a steel cord, one end of the cord being connected to the locking pin, the other end of the cord being connected to the joint head.
  • the handlebar set further includes the connecting member connected to the lower end of the lower handlebar set, and the rear end of the seat set is rotatably connected to the connecting member.
  • the frame further includes a backrest bar, the backrest bar being rotatably connected to the connecting member.
  • the upper end of the rear leg set is rotatably connected to the upper end of the front leg set, and the upper end of the front leg set is not rotatably connected to the lower end of the side armrest.
  • the upper end of the front leg set is rotatably connected to the lower end of the side armrest, and the upper end of the front leg set is not rotatably connected to the upper end of the rear leg set.
  • the upper end of the front leg set, the upper end of the rear leg set, and the lower end of the side armrest are coaxially hinged.
  • the middle portion of the front leg set is rotatably connected to the seat set, in particular to the front end or to a middle portion of the seat set.
  • Some example embodiments include an automatically collapsible stroller frame, that includes a front leg set ( 11 ), the front leg set ( 11 ) comprising a front leg bar ( 111 ), a rear leg set ( 12 ), the rear leg set ( 12 ) comprising a rear leg bar ( 121 ), a handlebar set ( 15 ), the handlebar set ( 15 ) comprising a lower handlebar tube ( 152 ) and a U-shaped upper handlebar tube ( 151 ) that is rotatably disposed at an upper end of the lower handlebar tube ( 152 ), the lower handlebar tube ( 152 ) being provided with a slider ( 16 ) that is slidable along its axial direction, a locking assembly ( 4 ) being provided between the lower handlebar tube ( 152 ) and the slider ( 16 ) for locking or unlocking the slider ( 16 ), the lower end of the lower handlebar tube ( 152 ) being hinged to the middle portion of the rear leg bar ( 121 ), a transmission member ( 14 )
  • the connecting base ( 154 ) being connected to the lower end of the lower handlebar tube ( 152 ) which is hinged to the middle portion of the rear leg bar ( 121 ).
  • the backrest set ( 9 ) further including a backrest set ( 9 ), the backrest set ( 9 ) including a U-shaped backrest bar ( 91 ), the end of the backrest bar ( 91 ) being hinged to the connecting base ( 154 ).
  • the rear end of the elastic member ( 43 ) is fixed to the connecting base ( 154 ) or directly fixed to the rear leg bar ( 121 ).
  • the locking assembly ( 4 ) includes a locking pin ( 41 ) disposed in the lower handlebar tube ( 152 ) and a locking hole ( 42 ) disposed in the slider ( 16 ), and the locking pin ( 41 ) can penetrate the lower handlebar tube ( 152 ) and be elastically engaged in the locking hole ( 42 ).
  • a rotating base ( 153 ) is disposed between the lower handlebar tube ( 152 ) and the upper handlebar tube ( 151 ), and a pull cord is disposed between the rotating base ( 153 ) and the locking pin ( 41 ).
  • the upper handlebar tube ( 151 ) is provided with an unlocking member ( 50 ) for unlocking or locking the upper handlebar tube ( 151 ) so that it is rotatable or fixable relative to the lower handlebar tube ( 152 ).
  • the upper end of the front leg bar ( 111 ), the lower end of the transmission member ( 14 ) and the upper end of the rear leg bar ( 121 ) are coaxially hinged.
  • the upper end of the front leg bar ( 111 ) is hinged to the upper end of the rear leg bar ( 121 ) and is not hinged to the lower end of the transmission member ( 14 ). In some examples, the upper end of the front leg bar ( 111 ) is hinged to the lower end of the transmission member ( 14 ) and is not hinged to the upper end of the rear leg bar ( 121 ). In some examples, the elastic member ( 43 ) is a spring or rubber band.
  • a stroller including a frame which is collapsible from an unfolded state to a folded state, the frame includes a front leg set, a rear leg set,
  • the slider being capable of sliding along the handlebar set, a front wheel assembly, disposed at a front portion of the bottom of the frame, a rear wheel assembly, disposed at a rear portion of the bottom of the frame, and a locking mechanism, disposed between the handlebar set and the slider, the locking mechanism being configured to lock the frame in an unfolded state.
  • the lower end of the side armrest being rotatably connected to the upper end of the rear leg set.
  • the rear leg set being rotatably connected to the lower end of the handlebar set.
  • the middle portion of the rear leg set being rotatably connected to the lower end of the handlebar set.
  • at least one of the upper end of the rear leg set and the lower end of the side armrest being rotatably connected to the upper end of the front leg set.
  • the middle portion of the front leg set being rotatably connected to the seat set.
  • the rear end of the seat set being rotatably connected to the lower end of the handlebar set.
  • the locking mechanism comprises a locking pin and a locking hole, the locking pin being disposed on the handlebar set, the locking hole being disposed in the slider, the frame being in a locked state when the locking pin is inserted into the locking hole, and the frame being in an unlocked state when the locking pin is disengaged from the locking hole.
  • the handlebar set comprises an upper handlebar set and a lower handlebar set, and a joint head disposed between the upper handlebar set and the lower handlebar set.
  • the locking mechanism further comprises a spring, a central portion of a locking portion is provided with a cylindrical support portion, the locking portion is recessed with an accommodating space, the lower handlebar set comprises an insert, one end of the spring extends into the accommodating space and abuts against the cylindrical support portion, and the other end of the spring abuts against the insert.
  • the locking mechanism further comprises a linkage member, in particular a pull cord, more in particular a steel cord, one end of the linkage member being connected to the locking pin, the other end of the linkage member being connected to the joint head.
  • the handlebar set further comprises the connecting member connected to a lower portion of the lower handlebar set, the middle portion of the rear leg set is rotatably connected to the connecting member via the lower portion of the lower handlebar set, and the rear portion of the seat set is rotatably connected to the connecting member.
  • the upper portion of the rear leg set is rotatably connected to the upper portion of the front leg set, and the upper portion of the front leg set is not rotatably connected to the lower portion of the side armrest.
  • the upper portion of the front leg set is rotatably connected to the lower portion of the side armrest, and the upper portion of the front leg set is not rotatably connected to the upper end of the rear leg set.
  • the upper end of the front leg set, the upper end of the rear leg set, and the lower end of the side armrest are coaxially hinged.
  • the middle portion of the front leg set is rotatably connected to the seat set, in particular to the front end or to a middle portion of the seat set.
  • a collapsible stroller frame includes a front leg set ( 11 ), the front leg set ( 11 ) comprising a front leg bar ( 111 ), a rear leg set ( 12 ), the rear leg set ( 12 ) comprising a rear leg bar ( 121 ), a handlebar set ( 15 ) being provided with a slider ( 16 ) that is slidable along its axial direction, a locking assembly ( 4 ) being provided between the handlebar set ( 15 ) and the slider ( 16 ) for locking or unlocking the slider ( 16 ), the handlebar set ( 15 ) being hinged to the rear leg bar ( 121 ), a transmission member ( 14 ) being hinged between the slider ( 16 ) and the rear leg bar ( 121 ) or the front leg bar ( 111 ), and an elastic member ( 43 ) being associated with the front leg bar ( 111 ) and the rear leg bar ( 121 ) such that when the stroller frame collapses, the front leg bar ( 111 )
  • the handlebar set ( 15 ) comprising a lower handlebar tube ( 152 ) and an upper handlebar tube ( 151 ) that is rotatably disposed at an upper end of the lower handlebar tube ( 152 ), the lower handlebar tube ( 152 ) being provided with the slider ( 16 ) that is slidable along its axial direction.
  • the locking assembly ( 4 ) being provided between the lower handlebar tube ( 152 ) and the slider ( 16 ).
  • the lower handlebar tube ( 152 ) being hinged to the rear leg bar ( 121 ),
  • the upper handlebar tube ( 151 ) is U-shaped.
  • the lower end of the lower handlebar tube ( 152 ) being hinged to the rear leg bar ( 121 ), in particular to a middle portion thereof.
  • the transmission member ( 14 ) being hinged between the slider ( 14 ) on the one hand and the upper portion of the rear leg bar ( 121 ) or the upper portion of the front leg bar ( 111 ) on the other hand.
  • the stroller frame is automatically collapsible, wherein the front leg bar ( 111 ) and the rear leg bar ( 121 ) are automatically brought close together under the elastic pulling of the elastic member ( 43 ), thereby completing the collapsing.
  • it further includes a seat set ( 13 ), the seat set ( 13 ) being hinged to the front leg bar ( 111 ), the seat set ( 13 ) being hinged to the lower end of the lower handlebar tube ( 152 ), in particular via a connecting base ( 154 ).
  • the front end of the elastic member ( 43 ) being fixed to the seat set ( 13 ), in particular fixed to a front portion or to a middle portion of the seat set ( 13 ).
  • the front portion of the seat set ( 13 ) being hinged to the middle portion of the front leg bar ( 111 ).
  • the rear end of the seat set ( 13 ) being hinged to the lower end of the lower handlebar tube ( 152 ), in particular via the connecting base ( 154 ).
  • the connecting base ( 154 ) being connected to the lower end of the lower handlebar tube ( 152 ) which is hinged to the middle portion of the rear leg bar ( 121 ).
  • the backrest set ( 9 ) further includes a backrest set ( 9 ), the backrest set ( 9 ) comprising a U-shaped backrest bar ( 91 ), the end of the backrest bar ( 91 ) being hinged to the connecting base ( 154 ).
  • the rear end of the elastic member ( 43 ) is directly or indirectly fixed to the connecting base ( 154 ) or directly fixed to the rear leg bar ( 121 ).
  • the locking assembly ( 4 ) comprises a locking pin ( 41 ) disposed in the lower handlebar tube ( 152 ) and a locking hole ( 42 ) disposed in the slider ( 16 ), and the locking pin ( 41 ) can penetrate the lower handlebar tube ( 152 ) and be elastically engaged in the locking hole ( 42 ).
  • a rotating base ( 153 ) is disposed between the lower handlebar tube ( 152 ) and the upper handlebar tube ( 151 ), and a pull cord is disposed between the rotating base ( 153 ) and the locking pin ( 41 ).
  • the upper handlebar tube ( 151 ) is provided with an unlocking member ( 50 ) for unlocking or locking the upper handlebar tube ( 151 ) so that it is rotatable or fixable relative to the lower handlebar tuber ( 152 ).
  • the upper end of the front leg bar ( 111 ), the lower end of the transmission member ( 14 ) and the upper end of the rear leg bar ( 121 ) are coaxially hinged.
  • the upper end of the front leg bar ( 111 ) is hinged to the upper end of the rear leg bar ( 121 ) and is not hinged to the lower end of the transmission member ( 14 ). In some examples, the upper end of the front leg bar ( 111 ) is hinged to the lower end of the transmission member ( 14 ) and is not hinged to the upper end of the rear leg bar, ( 121 ). In some examples, the elastic member ( 43 ) is a spring or rubber band.
  • the embodiments have the following example beneficial effects: after the locking mechanism is unlocked, the frame of the stroller can be collapsed from an unfolded state to a folded state, and the front leg set, the rear leg set, the seat set, the side armrest, and the handlebar set can be relatively rotated; thus, the frame of the stroller is fully folded to reduce the space occupied by the stroller, allowing easy carrying and transportation.
  • the present invention has the advantages of a simple structure, easy production and assembly, and a low production cost.
  • the technical problem to be solved by the present invention is to provide an automatically collapsible stroller frame to make the collapsing operation more convenient and faster.
  • FIG. 1 is a perspective view of the frame of the present invention in an unfolded state
  • FIG. 2 is a lateral view of the frame of the present invention in an unfolded state
  • FIG. 3 is a schematic view of the process of folding the frame of the present invention.
  • FIG. 4 is a perspective view of the frame of the present invention in a folded state
  • FIG. 5 is a front view of the frame of the present invention in an unfolded state
  • FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5 and an enlarged view of the locking mechanism in the locked state;
  • FIG. 7 is a schematic view of the locking pin and spring of the present invention.
  • FIG. 8 is a schematic view of the upper handlebar set of the present invention when folded
  • FIG. 9A is a cross-sectional view taken along line B-B of FIG. 8 and an enlarged view of the locking mechanism in the unlocked state;
  • FIG. 9B is a further enlarged view of the locking mechanism in the unlocked state
  • FIG. 10 is a perspective view and a partial enlarged view of the frame of the present invention and the backrest bar;
  • FIG. 11 is a schematic view showing an example embodiment of the connection relationship between the front leg set, the rear leg set, and the side armrest according to the present invention.
  • FIG. 12 is a schematic view showing an example embodiment of the connection relationship between the front leg set, the rear leg set, and the side armrest according to the present invention.
  • FIG. 13 is a schematic view showing a third embodiment of the connection relationship between the front leg set, the rear leg set, and the side armrest according to the present invention.
  • FIG. 14 is an example structural diagram of the present invention when it is unfolded
  • FIG. 15 is another example structural diagram of the present invention when it is unfolded
  • FIG. 16 is a structural view of the present invention when the stroller collapses
  • FIG. 17 is a structural view of the present invention after collapsing of the stroller.
  • FIG. 18 is a cross-sectional view of the locking assembly of the present invention in the locked state
  • FIG. 19A is a cross-sectional view of the locking assembly of the present invention in an unlocked state
  • FIG. 19B is a further enlarged view of the locking assembly in the unlocked state
  • FIG. 20 is a schematic diagram showing the configuration in which the upper end of the front leg bar, the lower end of the transmission member, and the upper end of the rear leg bar are coaxially hinged;
  • FIG. 21 is a schematic view showing the configuration in which the upper end of the front leg bar is hinged to the upper end of the rear leg bar and is not hinged to the lower end of the transmission member;
  • FIG. 22 is a schematic view showing the configuration in which the upper end of the front leg bar is hinged to the lower end of the transmission member and is not hinged to the upper end of the rear leg bar.
  • a stroller according to a preferred embodiment of the present invention comprises a frame 1 , a front wheel assembly 2 disposed at a front portion of the bottom of the frame 1 , a rear wheel assembly 3 disposed at a rear portion of the bottom of the frame 1 , and a locking mechanism 4 disposed on the frame 1 .
  • the frame 1 can be collapsed from an unfolded state to a folded state.
  • the frame 1 comprises a front leg set 11 , a rear leg set 12 , a seat set 13 , a side armrest 14 , a handlebar set 15 , and a slider 16 .
  • the upper portion of the side armrest 14 is rotatably connected to the slider 16 .
  • the lower portion of the side armrest 14 is rotatably connected to the front leg set 11 or to the rear leg set 12 .
  • the rear leg set 12 is rotatably connected to the lower portion of the handlebar set 15 . At least one of the rear leg set 12 and the side armrest 14 is rotatably connected to the front leg set 11 .
  • the front leg set 11 is rotatably connected to the seat set 13 .
  • the seat set 13 is rotatably connected to the lower portion of the handlebar set 15 , in particular via a connecting member 154 .
  • the slider 16 is capable of sliding along the handlebar set 15 .
  • the upper end of the side armrest 14 is rotatably connected to the slider 16 .
  • the lower end of the side armrest 14 is rotatably connected to the upper end of the rear leg set 12 .
  • the rear leg set 12 in particular the middle portion of the rear leg set, is rotatably connected to the lower end of the handlebar set 15 .
  • At least one of the upper end of the rear leg set 12 and the lower end of the side armrest 14 is rotatably connected to the upper end of the front leg set 11 .
  • the upper end of the rear leg set 12 , the lower end of the side armrest 14 , and the upper end of the front leg set 11 are coaxially hinged, and their connection relationship is shown in FIG. 11 .
  • the middle portion of the front leg set 11 is rotatably connected to the seat set 13 , in particular to the front end or to a middle portion of the seat set 13
  • the rear end of the seat set 13 is rotatably connected to the lower end of the handlebar set 15 , in particular via the connecting member 154 .
  • the slider 16 can be slid along the length of the handlebar set 15 .
  • the front wheel assembly 2 is rotatably connected to the lower end of the front leg set 11
  • the rear wheel assembly 3 is rotatably connected to the lower end of the rear leg set 12 .
  • the locking mechanism 4 is provided between the handlebar set 15 and the slider 16 , and the locking mechanism 4 is configured to lock the frame 1 in an unfolded state.
  • the frame 1 of the stroller can be collapsed from an unfolded state to a folded state.
  • the front leg set 11 , the rear leg set 12 , the seat set 13 , the side armrest 14 , and the handlebar set 15 can be relatively rotated.
  • the frame 1 of the stroller is fully folded to reduce the space occupied by the stroller, allowing easy carrying and transportation.
  • the present invention has a simple structure, is easy to produce and assemble, and has a low production cost.
  • the front wheel assembly 2 is rotatably connected to the lower end of the front leg set 11
  • the rear wheel assembly 3 is rotatably connected to the lower end of the rear leg set 12 .
  • the locking mechanism 4 comprises a locking pin 41 and a locking hole 42 , the locking pin 41 being disposed on the handlebar set 15 , the locking hole 42 being disposed in the slider 16 , the frame 1 being in a locked state when the locking pin 41 is inserted into the locking hole 42 , and the frame 1 being in an unlocked state when the locking pin 41 is disengaged from the locking hole 42 .
  • the frame 1 is in the locked state, since the locking pin 41 located in the handlebar set 15 is inserted into the locking hole 42 of the slider 16 , the slider 16 cannot be slid.
  • the frame 1 cannot collapse from an unfolded state to a folded state, thus preventing the frame 1 from unexpectedly collapsing and injuring the baby when the stroller is used.
  • the locking pin 41 is disengaged from the locking hole 42 , and the slider 16 can slide along the length of the handlebar set 15 .
  • the frame 1 can collapse from an unfolded state to a folded state.
  • the locking mechanism 4 of the present invention has a simple structure and functions reliably.
  • the locking pin 41 comprises a stopper portion 411 and a locking portion 412 that extends laterally from the stopper portion 411 .
  • the locking portion 412 is inserted into the locking hole 42 , and the stopper portion 411 is limited to one side of the locking hole 42 .
  • the stopper portion 411 is configured to limit the position of the locking portion 412 to prevent the locking portion 412 from being excessively inserted.
  • the locking mechanism 4 further comprises a spring 43 , a cylindrical support portion 4121 is provided in a central portion of the locking portion 412 , the locking portion 412 is recessed with an accommodating space 4122 .
  • the handlebar set 15 comprises an upper handlebar set 151 and a lower handlebar set 152 , and a joint head 153 between the upper handlebar set 151 and the lower handlebar set 152 , and the upper handlebar set 151 can be rotated relative to the lower handlebar set 152 by the joint head 153 .
  • the lower handlebar set 152 comprises an insert 1521 , one end of the spring 43 extends into the accommodating space 4122 and abuts against the cylindrical support portion 4121 , and the other end of the spring 43 abuts against the insert 1521 .
  • the locking mechanism 4 has a function of automatic restoration.
  • the frame 1 is opened from a folded state to an unfolded state, the locking pin 41 is automatically inserted into the locking hole 42 by the elastic force of the spring 43 .
  • the frame 1 can be automatically locked, without the need of manual locking. This prevents any adverse consequences when a user forgets to lock a stroller when using it.
  • the locking mechanism 4 further comprises a linkage member.
  • One end of the linkage member is connected to the locking pin 41 , and the other end of the linkage member is connected to the joint head 153 .
  • the linkage member is a pull cord, in particular a steel cord 60 (see FIG. 9B ), also referred to as a pull cord 60 , one end of the steel cord 60 being connected to the locking pin 41 , the other end of the steel cord 60 being connected to the joint head 153 .
  • the frame 1 To fold the frame 1 , it is only necessary to rotate the upper handlebar set 151 , and, at the same time, the joint head 153 rotates, thereby driving the steel cord to move, so that the locking pin 41 is disengaged from the locking hole 42 and the spring 43 is in a compressed state. In this case, the frame 1 is in the unlocked state, and can be smoothly collapsed from an unfolded state to a folded state. During the folding, gravity assists in the folding movement.
  • the handlebar set 15 further comprises a connecting member 154 that is connected to the lower portion of the lower handlebar set 152 , in particular to the lower end of the lower handlebar set 152 .
  • the middle portion of the rear leg set 12 is rotatably connected to the connecting member 154 via its connection with the lower handlebar set.
  • the rear portion of the seat set 13 in particular the rear end of the seat set 13 , is rotatably connected to the connecting member 154 .
  • the rotatable connection between the middle portion of the rear leg set 12 and the rear portion of the seat set, in particular the rear end of the seat set 13 occurs via the lower portion of the handlebar set 15 , in particular the lower end of the handlebar set 15 and via the connecting member 154 .
  • the frame 1 further comprises a backrest bar 91 , the backrest bar 91 being connected to the connecting member 154 .
  • the backrest bar 91 is used for mounting a baby's back cushion.
  • the connecting member 154 is provided with a plurality of tooth portions 1541 .
  • the backrest bar 91 can be rotated to engage with the different tooth portions 1541 , thereby adjusting the angle of the backrest cushion so that the baby feels more comfortable when sitting in the stroller.
  • FIG. 12 is a schematic view showing an example embodiment of the connection relationship between the front leg set, the rear leg set, and the side armrest according to the present invention, wherein the upper portion of the rear leg set 12 is rotatably connected to the upper portion of the front leg set 11 , and the upper portion of the front leg set 11 is not rotatably connected to the lower portion of the side armrest 14 .
  • the upper end of the rear leg set 12 is rotatably connected to the upper end of the front leg set 11
  • the upper end of the front leg set 11 is not rotatably connected to the lower end of the side armrest 14 .
  • FIG. 13 is a schematic view showing a third embodiment of the connection relationship between the front leg set, the rear leg set, and the side armrest according to the present invention, wherein the upper portion of the front leg set 11 is rotatably connected to the lower portion of the side armrest 14 , and the upper portion of the front leg set 11 is not rotatably connected to the upper end of the rear leg set 12 .
  • the upper end of the front leg set 11 is rotatably connected to the lower end of the side armrest 14 , and the upper end of the front leg set 11 is not rotatably connected to the upper end of the rear leg set 12 .
  • a further embodiment of a collapsible stroller frame in particular an automatically collapsible stroller frame of the present invention comprises: a front leg set 11 , the front leg set 11 comprising a front leg bar 111 ; and a rear leg set 12 , the rear leg set 12 comprising a rear leg bar 121 .
  • the stroller frame further comprises a handlebar set 15 .
  • the handlebar set 15 is provided with a slider 16 that is slidable along its axial direction.
  • the handlebar set 15 comprises a lower handlebar tube 152 and a U-shaped upper handlebar tube 151 that is rotatably disposed at an upper end of the lower handlebar tube 152 , the lower handlebar tube 152 being provided with the slider 16 that is slidable along its axial direction.
  • a locking assembly 4 is provided between the handlebar set 15 and the slider 16 for locking or unlocking the slider 16 , the handlebar set 15 is hinged to the rear leg bar 121 , and a transmission member 14 is hinged between the slider 16 and the rear leg bar 121 or the front leg bar 111 .
  • the locking assembly 4 is provided between the lower handlebar tube 152 and the slider 16 for locking or unlocking the slider 16 so that it is fixed to the lower handlebar tube 152 or is slidable in the axial direction of the lower handlebar tube 152 .
  • the lower handlebar tube 152 is hinged to the rear leg bar 121 .
  • the lower end of the lower handlebar tube 152 is hinged to the rear leg bar 121 , in particular to the middle portion of the rear leg bar 121 .
  • a transmission member 14 is hinged between the slider 16 and the upper portion of the rear leg bar 121 or the upper portion of the front leg bar 111 .
  • the upper end of the front leg bar 111 is hinged to the lower end of the transmission member 14 and/or the upper end of the rear leg bar 121 .
  • the upper end of the front leg bar 111 , the lower end of the transmission member 14 , and the upper end of the rear leg bar 121 are coaxially hinged.
  • the stroller frame further comprises an elastic member 43 , the elastic member 43 being a spring or a rubber band.
  • the elastic member 43 is associated with the front leg bar 111 and the rear leg bar 121 such that when the stroller frame collapses, the front leg bar 111 and the rear leg bar 121 are automatically brought close together under the elastic pulling of the elastic member 43 , thereby completing the collapsing
  • the elastic member 43 is disposed between the front leg bar 111 and the rear leg bar 121 such that when the stroller frame collapses, the front leg bar 111 and the rear leg bar 121 are automatically brought close together under the elastic pulling of the elastic member 43 , thereby completing automatic collapsing.
  • the locking assembly 4 unlocks the slider 16 , and the front leg bar 111 and the rear leg bar 121 are automatically brought close together by the elastic pulling of the elastic member 43 .
  • the transmission member 14 drives the slider 16 to slide down the axial direction of the lower handlebar tube 152 to drive the lower handlebar tube 152 towards the direction of the rear leg bar 121 , thereby collapsing the whole stroller frame, which is very fast and convenient. Gravity and the force from the elastic member 7 cooperate during the folding movement.
  • the stroller frame further comprises a seat set 13 , the seat set 13 being hinged to the front leg bar 111 , the seat set 13 being hinged to the lower end of the lower handlebar tube 152 , in particular via a connecting base 154 .
  • the front portion of the seat set 13 is hinged to a middle portion of the front leg bar 111 .
  • the rear end of the seat set 13 is hinged to the lower end of the lower handlebar tube 152 , in particular via a connecting base 154 .
  • the front end of the elastic member 43 is fixed to the seat set 13 .
  • the elastic member 43 may be fixed to the front portion or to a middle portion of the seat set.
  • the elastic member 43 acts between the seat set 13 and the rear leg bar 121 .
  • the front leg bar 111 and the rear leg bar 121 are automatically brought together, and the seat set 13 is also rotated forward to move towards the front leg bar 111 .
  • the elastic member 43 can be arranged slightly differently, while maintaining the same functionality of pulling the front leg bar 111 and the rear leg bar 121 toward one another during the folding movement.
  • the stroller further comprises a backrest set 9 , the backrest set 9 comprising a U-shaped backrest bar 91 , the connecting base 154 being connected to the lower end of the lower handlebar tube 152 which in turn is hinged to the middle portion of the rear leg bar 121 .
  • the end of the backrest bar 91 is hinged to the connecting base 154 .
  • the rear end of the elastic member 43 is directly or indirectly fixed to the connecting base 154 .
  • the rear end of the elastic member 43 may be connected to a transverse rod which interconnects the right and left connecting base 154 .
  • the rear end of the elastic member 43 is also directly fixable to the rear leg bar 121 .
  • the locking assembly 4 comprises a locking pin 41 provided in the lower handlebar tube 152 and a locking hole 42 provided in the slider 16 , and the locking pin 41 can penetrate the lower handlebar tube 152 and be elastically engaged in the locking hole 42 .
  • the locking pin 41 in the lower handlebar tube 152 is engaged in the locking hole 42 of the slider 16 , so that the slider 16 is not slidable relative to the lower handlebar tube 152 .
  • the stroller frame is not collapsible from an unfolded state to a folded state, and thus the stroller frame does not unexpectedly collapse and injure the baby when the stroller is used.
  • the locking assembly 4 When the locking assembly 4 is in the unlocked state, the locking pin 41 is disengaged from the locking hole 42 , and the slider 16 is slidable along the axial direction of the lower handlebar tube 152 .
  • the stroller frame is collapsible from an unfolded state to a folded state.
  • the locking assembly 4 of the present invention has a simple structure and operates reliably.
  • a rotating base 153 is provided between the lower handlebar tube 152 and the upper handlebar tube 151 , and a linkage member, in particular a pull cord ( 60 , see FIG. 19B ) is disposed between the rotating base 153 and the locking pin 41 .
  • a linkage member in particular a pull cord ( 60 , see FIG. 19B ) is disposed between the rotating base 153 and the locking pin 41 .
  • the rotating base 153 rotates at the same time, thereby driving the pulling cord to move so that the locking pin 41 is disengaged from the locking hole 42 .
  • the locking assembly 4 is in an unlocked state, and the stroller frame is automatically collapsible from an unfolded state to a folded state.
  • the upper handlebar tube 151 is provided with an unlocking member 50 for unlocking or locking the upper handlebar tube 151 so that it is rotatable or fixed relative to the lower handlebar tube 152 .
  • an unlocking member 50 for unlocking or locking the upper handlebar tube 151 so that it is rotatable or fixed relative to the lower handlebar tube 152 .
  • FIG. 21 differs from the above-mentioned configuration only in that the upper end of the front leg bar 111 , the lower end of the transmission member 14 , and the upper end of the rear leg bar 121 are not coaxially hinged. Instead, the upper end of the front leg bar 111 is hinged to the upper end of the rear leg bar 121 and is not hinged to the lower end of the transmission member 14 .
  • the connection relationship of the front leg bar 111 , the transmission member 14 , and the rear leg bar 121 which may be slightly different from that of other example embodiments, it is also possible to achieve all the technical effects of the same.
  • a further embodiment of the present invention as shown in FIG. 22 differs from the above-mentioned configuration only in that the upper end of the front leg bar 111 , the lower end of the transmission member 14 , and the upper end of the rear leg bar 121 are not coaxially hinged. Instead, the upper end of the front leg bar 111 is hinged to the lower end of the transmission member 14 and is not hinged to the upper end of the rear leg bar 121 .
  • the connection relationship of the front leg bar 111 , the transmission member 14 , and the rear leg bar 121 is slightly different from that of some example embodiments of the present invention, it is also possible to achieve all the technical effects of the same.
  • the stroller frame When the present invention is used, the stroller frame is unfolded to a state shown in FIG. 14 or FIG. 15 (the unfolding operation still needs to be manually performed).
  • the unlocking member 50 To collapse the stroller, it is only necessary to operate the unlocking member 50 so that the upper handlebar tube 151 is unlocked and operate it to rotate relative to the lower handlebar tube 152 and fold.
  • the rotating base 153 rotates at the same time, thereby driving the pulling cord to move so that the locking pin 41 is disengaged from the locking hole 42 .
  • the locking assembly 4 is in an unlocked state.
  • the front leg bar 111 and the rear leg bar 121 are automatically brought together, and the seat set 13 also rotates forward to move towards the front leg bar 111 .
  • the transmission member 14 drives the slider 16 to slide down the axial direction of the lower handlebar tube 152 , thereby driving the lower handlebar tube 152 to move towards the rear leg bar 121 .
  • the connecting base 154 and the backrest bar 91 are rotated to, following the lower handlebar tube 152 , move towards the rear leg bar 121 , thereby collapsing the whole stroller frame, which is very quick and convenient.
  • the collapsed stroller frame supported by the front and rear castors, stands upright. Therefore, it is possible to place the collapsed stroller upright without the need of laying it flat, thereby saving floor space.
  • middle portion as used herein, for instance in connection with the front leg set and the rear leg set is to be interpreted broadly and refers to the portion between the opposing ends thereof.
  • the words “comprise,” “comprising,” and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in a sense of “including, but not limited to.” Words using the singular or plural number also include the plural or singular number respectively. Additionally, the words “herein,” “hereunder,” “above,” “below,” and words of similar import refer to this application as a whole and not to any particular portions of this application. When the word “or” is used in reference to a list of two or more items, that word covers all of the following interpretations of the word: any of the items in the list, all of the items in the list and any combination of the items in the list.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
US16/474,399 2018-03-07 2019-03-07 Stroller Abandoned US20200391781A1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
CN201810186731.8A CN108275192B (zh) 2018-03-07 2018-03-07 婴儿车
CN201810186731.8 2018-03-07
CN201820312244.7 2018-03-07
CN201820312244.7U CN207931790U (zh) 2018-03-07 2018-03-07 婴儿车
CN201810647800.0A CN108860280B (zh) 2018-06-22 2018-06-22 一种可自动收车的童车车架
CN201810647800.0 2018-06-22
CNPCT/CN2018/094789 2018-07-06
PCT/CN2018/094789 WO2019242048A1 (fr) 2018-06-22 2018-07-06 Cadre de poussette pour bébé pouvant être plié automatiquement
PCT/CN2019/077331 WO2019101238A2 (fr) 2018-03-07 2019-03-07 Poussette

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/077331 A-371-Of-International WO2019101238A2 (fr) 2018-03-07 2019-03-07 Poussette

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/507,001 Continuation US10882546B2 (en) 2018-03-07 2019-07-09 Stroller

Publications (1)

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US20200391781A1 true US20200391781A1 (en) 2020-12-17

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ID=66631215

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/474,399 Abandoned US20200391781A1 (en) 2018-03-07 2019-03-07 Stroller

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Country Link
US (1) US20200391781A1 (fr)
EP (1) EP3762274A4 (fr)
KR (1) KR102165079B1 (fr)
WO (1) WO2019101238A2 (fr)

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US20220169297A1 (en) * 2020-11-30 2022-06-02 Graco Children's Products, Inc. Systems, methods, and apparatus for providing a compact automatic folding stroller
US11352041B2 (en) * 2019-03-29 2022-06-07 Dongguan Master Kids Toy Co., Ltd. Baby stroller with quick folding structure
WO2023217975A3 (fr) * 2022-05-11 2023-12-28 Wonderland Switzerland Ag Dispositif de limitation, structure de montage d'auvent et porte-bébé

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CN116101355A (zh) * 2021-11-10 2023-05-12 明门瑞士股份有限公司 扶手支撑杆连动收折的座椅、车架组件及婴儿载具

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CN207931790U (zh) * 2018-03-07 2018-10-02 中山市金亮儿童用品有限公司 婴儿车
CN108860280B (zh) * 2018-06-22 2020-12-01 中山市金亮儿童用品有限公司 一种可自动收车的童车车架
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11352041B2 (en) * 2019-03-29 2022-06-07 Dongguan Master Kids Toy Co., Ltd. Baby stroller with quick folding structure
US20220169297A1 (en) * 2020-11-30 2022-06-02 Graco Children's Products, Inc. Systems, methods, and apparatus for providing a compact automatic folding stroller
WO2023217975A3 (fr) * 2022-05-11 2023-12-28 Wonderland Switzerland Ag Dispositif de limitation, structure de montage d'auvent et porte-bébé

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WO2019101238A3 (fr) 2019-07-11
KR102165079B1 (ko) 2020-10-13
EP3762274A4 (fr) 2022-01-12
KR20190106991A (ko) 2019-09-18
WO2019101238A2 (fr) 2019-05-31
EP3762274A2 (fr) 2021-01-13

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