WO2020210927A1 - 可折叠的儿童车 - Google Patents

可折叠的儿童车 Download PDF

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Publication number
WO2020210927A1
WO2020210927A1 PCT/CN2019/082606 CN2019082606W WO2020210927A1 WO 2020210927 A1 WO2020210927 A1 WO 2020210927A1 CN 2019082606 W CN2019082606 W CN 2019082606W WO 2020210927 A1 WO2020210927 A1 WO 2020210927A1
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WO
WIPO (PCT)
Prior art keywords
rear fork
fork rod
pivotally connected
rod
pivot joint
Prior art date
Application number
PCT/CN2019/082606
Other languages
English (en)
French (fr)
Inventor
吴春华
Original Assignee
嘉兴小虎子车业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 嘉兴小虎子车业有限公司 filed Critical 嘉兴小虎子车业有限公司
Priority to US17/437,302 priority Critical patent/US20220177068A1/en
Priority to PCT/CN2019/082606 priority patent/WO2020210927A1/zh
Priority to KR1020217019438A priority patent/KR102516072B1/ko
Publication of WO2020210927A1 publication Critical patent/WO2020210927A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B62K15/006—Collapsible or foldable cycles the frame being foldable
    • B62K15/008—Collapsible or foldable cycles the frame being foldable foldable about 2 or more axes
    • 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
    • B62B7/042—Steering devices
    • 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
    • B62B7/044—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor three wheeled
    • 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
    • B62B7/12—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor convertible, e.g. into children's furniture or toy
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B62K15/006—Collapsible or foldable cycles the frame being foldable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K9/00—Children's cycles
    • B62K9/02—Tricycles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62H—CYCLE STANDS; SUPPORTS OR HOLDERS FOR PARKING OR STORING CYCLES; APPLIANCES PREVENTING OR INDICATING UNAUTHORIZED USE OR THEFT OF CYCLES; LOCKS INTEGRAL WITH CYCLES; DEVICES FOR LEARNING TO RIDE CYCLES
    • B62H7/00—Devices for learning to ride cycles, not otherwise provided for, e.g. assisting balance

Definitions

  • This application relates to a baby carriage, and in particular to a foldable baby carriage.
  • Common children’s vehicles (such as children’s tricycles) currently on the market mainly include: a frame body, a front fork connected to the frame body, a front wheel installed to the front fork, a rear wheel frame connected to both sides of the frame body, The two rear wheels of the rear wheel frame, the seat assembly arranged on the frame body, and the steering assembly arranged on the frame body.
  • a push rod assembly for adult use can also be provided.
  • the frame body of this children's tricycle cannot be folded, so its longitudinal dimension cannot be changed. Therefore, this kind of children's tricycle is relatively large, and it is very inconvenient in transportation and packaging.
  • Some people have also developed foldable children's tricycles, but such children's tricycles often need to disassemble parts when folding, which is inconvenient to operate, and the volume after folding is still relatively large.
  • the Chinese patent CN105480342B which the applicant of this application submitted on April 13, 2016 and has been authorized, relates to a foldable children's tricycle and its folding method.
  • This kind of children's tricycle has an unfolded state and a folded state, wherein the frame includes an upper link assembly, a lower link assembly, a head tube and a support rod, which form a four-bar linkage mechanism, thereby folding and unfolding.
  • folding first unlock the locking device, then lift up the push rod assembly to disengage the upper and lower link assemblies, and then flip the push rod assembly to make the push rod assembly, handlebars, upper link assembly and lower link assembly move closer to each other , Stacked from top to bottom.
  • This configuration can effectively reduce the volume of the children's tricycle for easy carrying, and can fold and unfold the children's tricycle when necessary.
  • the content of CN105480342B can be fully cited in this article for reference. The applicant hopes to further develop a new type of children's tricycle on this basis, which has more convenient folding and unfolding operations and a more compact volume after folding.
  • the object of the present invention is to provide a foldable child vehicle with more convenient folding and unfolding operations and a more compact volume after folding.
  • the present invention provides a foldable stroller, which has an unfolded state and a folded state.
  • the foldable stroller includes a frame body, arranged at the front of the frame body and including at least one front The front wheel assembly of the wheel, the rear wheel assembly provided at the rear of the frame body and including at least two rear wheels, and the seat assembly provided on the upper part of the frame body, wherein the frame body includes: a head Tube; at least one girder, the girder has a first end and a second end, the first end of the girder is pivotally connected to the head tube; at least one connector, the second end of the girder is pivotally connected To the connecting head; at least two rear fork rods, the rear fork rod has a first end and a second end, the first end of the rear fork rod is pivotally connected to the connecting head, the rear fork rod The second end is connected to the rear wheel assembly.
  • the at least one girder includes a first girder and a second girder, and the first ends of the first girder and the second girder are both pivotally connected to the head tube by at least one connecting block, so
  • the at least one connector includes a first connector and a second connector, the first connector and the second connector can contact and separate from each other, the second beam of the first beam and the second beam Both ends are pivotally connected to the first connector and the second connector.
  • the first connecting head has a first upper pivot joint, a second upper pivot joint, and a third upper pivot joint facing different directions
  • the second connecting head has a first lower pivot facing different directions. Joints, second lower pivot joints and third lower pivot joints, wherein the second end of the first frame is pivotally connected to the first connector through the first upper pivot joint, and the second end of the second frame The second end is pivotally connected to the second connecting head through the first lower pivot joint.
  • it further includes a locking member that locks the first connector and the second connector together during normal use, and when it needs to be folded, the locking member is loosened open.
  • the at least two rear fork rods include a first rear fork rod and a second rear fork rod
  • the first rear fork rod includes a first upper rear fork rod and a first lower rear fork rod
  • the second rear fork includes a second upper rear fork and a second lower rear fork.
  • the at least two rear fork rods include a first rear fork rod and a second rear fork rod
  • the first rear fork rod includes a first upper rear fork rod and a first lower rear fork rod
  • the two rear fork rods include a second upper rear fork rod and a second lower rear fork rod.
  • Each rear fork rod has a first end and a second end.
  • the first end of the first upper rear fork rod passes through the The third upper pivot joint is pivotally connected to the first connector, the first end of the second upper rear fork is pivotally connected to the first connector through the second upper pivot joint, and the first The first end of the lower rear fork is pivotally connected to the second connecting head by the third lower pivot joint, and the first end of the second lower rear fork is pivotally connected to the second connecting head by the second lower pivot joint
  • the second connecting head, the second ends of the first upper rear fork rod and the first lower rear fork rod are pivotally connected to a rear wheel fixing seat located inside the rear wheel, and the second upper rear The second end of the fork rod and the second lower rear fork rod are pivotally connected to a rear wheel fixing seat located inside the other rear wheel.
  • it further comprises a push rod assembly for providing guidance for folding of the foldable stroller.
  • the at least one connector includes a first connector and a second connector
  • the push rod assembly includes a push rod
  • the first connector is slidable relative to the push rod
  • the The second connecting head is fixed relative to the push rod.
  • the foldable children's vehicle is a foldable children's tricycle
  • the foldable children's tricycle includes a front wheel arranged at the front of the frame body, and a rear wheel arranged at the rear of the frame body. Two rear wheels and a steering assembly arranged at the front of the frame body.
  • the foldable children's tricycle further includes pedals for driving the front wheels and/or pedals fixed to the frame body.
  • each part of the foldable children's tricycle is from bottom to top after being folded: the rear wheel assembly, the frame body, the steering assembly and the front wheel assembly, and the Seat components.
  • the present invention also provides a foldable frame for a foldable child vehicle.
  • the frame includes: a head tube; a first frame and a second frame, the first frame and the second frame respectively Has a first end and a second end, the first end of the first beam is pivotally connected to the head tube, and the first end of the second beam is pivotally connected to the head tube; a first connecting head and A second connector, the first connector has a first upper pivot joint, a second upper pivot joint, and a third upper pivot joint facing different directions, and the second connector has a first lower pivot joint facing different directions.
  • the two ends are pivotally connected to the second connector through the first lower pivot joint, the first connector and the second connector can move toward or away from each other; and a first rear fork lever And a second rear fork rod
  • the first rear fork rod includes a first upper rear fork rod and a first lower rear fork rod
  • the second rear fork rod includes a second upper rear fork rod and a second lower rear fork rod
  • Each of the rear fork rods has a first end and a second end, and the first end of the first upper rear fork rod is pivotally connected to the first connecting head through the third upper pivot joint, the The first end of the second upper rear fork is pivotally connected to the first connecting head by the second upper pivot joint, and the first end of the first lower rear fork is pivoted by the third lower pivot joint
  • the foldable frame further includes a push rod assembly
  • the push rod assembly includes a retractable push rod
  • the first connector is slidable relative to the push rod
  • the second connection The head is fixed relative to the push rod.
  • the foldable child vehicle of the present invention cleverly applies the principle of a plane linkage mechanism, and does not need to disassemble parts during folding, can realize "one-key” folding, and is very convenient and quick to operate. Moreover, compared with the prior art, the foldable baby stroller of the present invention has a more compact volume after being folded, especially the longitudinal size is significantly reduced.
  • Figure 1 is a side view of a children's tricycle according to a first embodiment of the present invention, the children's tricycle is not equipped with a push rod assembly;
  • Figure 2 is a perspective exploded view of the children's tricycle shown in Figure 1;
  • Figure 3 is a front view of the children's tricycle shown in Figure 1;
  • Figure 4 is a perspective exploded view of the children's tricycle shown in Figure 1 viewed from another angle;
  • Figure 5 is a three-dimensional exploded view of the frame body
  • Figure 6 is a perspective exploded view of the frame body viewed from another angle
  • Figure 7 is a side view of a children's tricycle according to a second embodiment of the present invention, the children's tricycle is equipped with a push rod assembly;
  • Figure 8 is a front view of the children's tricycle shown in Figure 7;
  • Figure 9 is a perspective view of the children's tricycle shown in Figure 7 after being folded;
  • Figure 10 is a perspective exploded view of the children's tricycle shown in Figure 7;
  • Figure 11 is a perspective exploded view of the children's tricycle shown in Figure 7 from another angle;
  • Figure 12 is a perspective exploded view of a frame body according to a second embodiment of the present invention.
  • Fig. 13 is an exploded perspective view of the frame body according to the second embodiment of the present invention viewed from another angle.
  • the foldable children's tricycle includes: a frame body 1, a steering assembly 2 arranged at the front of the frame body 1, and including A front wheel assembly of one front wheel 24, a rear wheel assembly including two rear wheels 3 arranged at the rear of the frame body 1, and a seat assembly 4 arranged on the upper part of the frame body 1.
  • the frame body 1 mainly includes a head pipe 22, a first beam 11 and a second beam 12, a first connector 13 and a second connector 14, a first rear fork rod 15 and a second rear fork rod 16.
  • the structure of the frame body 1 will be described in detail below.
  • the steering assembly 2 is inserted in the head pipe 22 of the frame body 1.
  • the steering assembly 2 includes a handle 21 for controlling the traveling direction of the children's tricycle. More specifically, the steering assembly 2 is connected to the front fork 23. One end of the front fork 23 is also inserted into the head tube 22 of the frame body 1, and the other end of the front fork 23 is installed with a front wheel assembly.
  • the front wheels 24 are driven by pedals 25. Riding children can step on the pedals 25 to move, while controlling the direction of the children's tricycle through the handle 21 of the steering assembly 2.
  • the seat assembly 4 is arranged on the upper part of the frame body 1, and preferably is detachably mounted on a fixed seat on the frame body 1.
  • the seat assembly 4 may include, for example, a fence, a backrest, etc., and these components are preferably pivotably folded to facilitate the folding of the entire children's tricycle.
  • a pedal 41 fixed to the frame body 1 can also be provided for children riding to step on their feet.
  • the first beam 11 and the second beam 12 respectively have a first end or front end and a second end or rear end.
  • the head pipe 22 is provided with a connection block 5, and the connection block 5 may, for example, include an upper connection block 51 and a lower connection block 52.
  • the first end of the first beam 11 is pivotally connected to the head pipe 22 by the upper connecting block 51.
  • the first end of the second beam 12 is pivotally connected to the head pipe 22 by the lower connecting block 52.
  • the first connecting head 13 has a first upper pivot joint 131, a second upper pivot joint 132, and a third upper pivot joint 133 respectively facing different directions.
  • the second connecting head 14 has a first lower pivot joint 141, a second lower pivot joint 142, and a third lower pivot joint 143 respectively facing different directions.
  • the second end of the first beam 11 is pivotally connected to the first connecting head 13 through the first upper pivot joint 131.
  • the second end of the second beam 12 is pivotally connected to the second connecting head 14 through the first lower pivot joint 141.
  • first rear fork rod 15 and the second rear fork rod 16 are basically the same.
  • first rear fork rod 15 includes a first upper rear fork rod 151 and a first lower rear fork rod 152
  • second rear fork rod 16 includes a second upper rear fork rod 161 and a second lower rear fork rod. 162.
  • Each rear fork has a front end or first end and a rear end or second end.
  • the first end of the first upper rear fork rod 151 is pivotally connected to the first connecting head 13 through the third upper pivot joint 133
  • the first end of the second upper rear fork rod 161 is pivotally connected to the first connecting head 13 through the second upper pivot joint 132 First connector 13.
  • the first end of the first lower rear fork rod 152 is pivotally connected to the second connecting head 14 through the third lower pivot joint 143, and the first end of the second lower rear fork rod 162 is pivotally connected to the second connecting head 14 through the second lower pivot joint 142 The second connection head 14.
  • the second ends of the first upper rear fork rod 151 and the first lower rear fork rod 152 are pivotally connected to the rear wheel fixing seat 31 located inside one rear wheel.
  • the second ends of the second upper rear fork rod 161 and the second lower rear fork rod 162 are pivotally connected to the rear wheel fixing seat 31 located inside the other rear wheel.
  • the first connector 13 and the second connector 14 can move toward or away from each other in a substantially vertical direction.
  • the first connector 13 and the second connector 14 are in contact with each other; when the tricycle is in a folded state, the first connector 13 and the second connector 14 are separated from each other.
  • the locking member 6 can be released first, and the first connecting head 13 and the second connecting head 14 can be separated by hand, so that the first beam 11 and the first upper rear
  • the fork rod 151 and the second upper rear fork rod 161 move in the first direction together with the first connecting head 13 and gradually converge inward, while simultaneously making the second main beam 12, the second lower rear fork rod 152 and the second lower rear fork rod 162 moves along with the second connecting head 14 in a second direction opposite to the first direction and gradually gathers inward.
  • the frame body 1 is formed into a folded state, in which the first frame 11, the first upper rear fork rod 151, the second upper rear fork rod 161, the second frame 12, the second lower rear fork rod 152 and the second lower rear
  • the fork rods 162 are close to each other and are substantially parallel to each other, thereby forming a compact folded state.
  • the remaining components of the children's tricycle for example, the steering assembly 2 and the seat assembly 4) are also folded inwardly with the folding movement of the frame body 1. This completes the folding process of the entire children's tricycle.
  • the parts of the children's tricycle are respectively the rear wheel assembly, the frame body 1, the steering assembly 2, the front wheel assembly, and the seat assembly 4 after being folded.
  • the foldable children's tricycle according to the second embodiment of the present invention further includes a push rod assembly 7.
  • the push rod assembly 7 can be used by adults like a traditional push rod assembly. More importantly, in the present invention, the push rod assembly 7 also functions as a guide for the folding of the children's tricycle.
  • the push rod assembly 7 mainly includes a handle 73 and a push rod.
  • the push rod is preferably retractable.
  • the first connecting head 13 is provided with a through hole 71 for the push rod to pass through, and the second connecting head 14 is provided with a connecting tube 72 that can be engaged with the push rod. Therefore, the first connecting head 13 is slidable relative to the push rod, and the second connecting head 14 is fixed relative to the push rod.
  • the push rod has a proximal end (that is, the end provided with the handle 73) and a distal end (that is, the end connected to the second connector 14).
  • the folding process of the children's tricycle according to the second embodiment of the present invention is as follows. First, shorten the push rod and release the locking member 6. Then separate the first connector 13 and the second connector 14 by hand. Then, make the first frame 11, the first upper rear fork rod 151 and the second upper rear fork rod 161 move along the push rod to the proximal end of the push rod along with the first connecting head 13 and gradually gather inward toward the push rod ; At the same time, the second main beam 12, the second lower rear fork rod 152 and the second lower rear fork rod 162 are gradually gathered from the second connector 14 toward the push rod at the distal end of the push rod.
  • the frame body 1 is formed into a folded state, in which the first frame 11, the first upper rear fork rod 151, the second upper rear fork rod 161, the second frame 12, the second lower rear fork rod 152 and the second lower rear
  • the fork rod 162 is very close to the push rod and is substantially parallel to the push rod, thereby forming a compact folded state.
  • the remaining components of the children's tricycle for example, the steering assembly 2 and the seat assembly 4) are also folded inward in sequence along with the movement of the frame body 1. This completes the folding process of the entire children's tricycle.
  • Figure 9 shows the folded children's tricycle. It can be seen from the figure that the various parts of the children's tricycle are respectively the rear wheel assembly, the frame body 1, the steering assembly 2, the front wheel assembly, and the seat assembly 4 after being folded.
  • one front wheel can be turned into two or more front wheels; or the steering assembly and the pedals can be removed, and if necessary, at least one universal wheel can be used as the front wheel.
  • the frame body of the foldable child vehicle of the present invention can also be changed.
  • the fork rod 16 may be in the form of a single rod, or may be in the form of a single rod with multiple sections.
  • the first beam 11 and the second beam 12 in the above embodiment can also be simplified into one. In other words, a configuration of one frame with two rear fork rods and one frame with four or more rear fork rods can be formed.
  • connection blocks, connecting heads, pivot joints, locking parts and other components used in the present invention are all well-known to those skilled in the art, but other arrangements may also be adopted.
  • first ends of the first beam 11 and the second beam 12 are respectively pivotally connected to two connecting blocks, and the first ends of the first beam 11 and the second beam 12 may also be pivotally connected to A connection block.
  • head tube used herein should cover various connection structures.

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

Abstract

一种可折叠的儿童车，具有展开状态和折叠状态，包括车架主体（1）、设置在车架主体（1）前部且包括至少一个前轮（24）的前轮组件、设置在车架主体（1）后部且包括至少两个后轮（3）的后轮组件、以及设置在车架主体（1）上部的座位组件（4），其中，车架主体（1）包括：头管（22）；至少一根大梁（11,12），大梁（11,12）具有第一端和第二端，大梁（11,12）的第一端枢转连接至头管（22）；至少一个连接头（13,14），大梁（11,12）的第二端枢转连接至连接头（13,14）；至少两根后叉杆（15,16），后叉杆（15,16）具有第一端和第二端，后叉杆（15,16）的第一端枢转连接至连接头（13,14），后叉杆（15,16）的第二端连接至后轮组件，本申请的可折叠儿童车在折叠时无需拆卸零部件，可实现"一键式"折叠，操作起来更加方便快捷。

Description

可折叠的儿童车 技术领域
本申请涉及儿童车，尤其是涉及一种可折叠的儿童车。
背景技术
目前市场上常见的儿童车(例如儿童三轮车)主要包括：车架主体、连接至车架主体的前叉、安装到前叉的前轮、连接至车架主体两侧的后轮架、安装到后轮架的两个后轮、设置在车架主体上的座位组件、以及设置在车架主体上的转向组件。如果需要，还可以设置供成人使用的推杆组件。这种儿童三轮车的车架主体不能折叠，于是不能改变其纵向尺寸。因此，这种儿童三轮车的体积较大，在运输和包装方面都十分不便。也有人开发了可折叠的儿童三轮车，但此类儿童三轮车在折叠时经常需要拆卸零件，操作不方便，而且折叠后的体积仍然较大。
本申请的申请人于2016年4月13日递交并且已获授权的中国专利CN105480342B涉及一种可折叠的儿童三轮车及其折叠方法。这种儿童三轮车具有展开状态和折叠状态，其中车架包括上连杆组件、下连杆组件、头管和支撑杆，它们形成四连杆机构，由此折叠和展开。折叠时，先解锁锁定装置，然后向上提拉推杆组件使其脱离上、下连杆组件，再先前翻转推杆组件使推杆组件、车把、上连杆组件和下连杆组件相互靠拢，自上而下依次堆叠。这种配置能有效地减小儿童三轮车的体积以便于携带，并且在需要时对儿童三轮车进行折叠和展开。CN105480342B的内容可全部援引到本文中以作参考。申请人希望能在此基础上进一步研发出一种新型的儿童三轮车，其折叠和展开操作更加便捷，且折叠后的体积更加紧凑。
发明内容
针对以上所述的问题，本发明的目的在于，提供一种折叠和展开操作更加便捷、且折叠后的体积更加紧凑的可折叠的儿童车。
为实现上述目的，本发明提供了一种可折叠的儿童车，具有展开状态和折叠状态，所述可折叠的儿童车包括车架主体、设置在所述车架主体前部且包括至少一个前轮的前轮组件、设置在所述车架主体后部且包括至少两个后轮的后轮组件、以及设置在所述车架主体上部的座位组件，其中，所述车架主体包括：头管；至少一根大梁，所述大梁具有第一端和第二端，所述大梁的第一端枢转连接至所述头管；至少一个连接头，所述大梁的第二端枢转连接至所述连接头；至少两根后叉杆，所述后叉杆具有第一端和第二端，所述后叉杆的第一端枢转连接至所述连接头，所述后叉杆的第二端连接至所述后轮组件。
优选的是，所述至少一根大梁包括第一大梁和第二大梁，所述第一大梁和所述第二大梁的第一端都通过至少一个连接块枢转连接至所述头管，所述至少一个连接头包括第一连接头和第二连接头，所述第一连接头和所述第二连接头能相互接触和相互分开，所述第一大梁和所述第二大梁的第二端都枢转连接至所述第一连接头和所述第二连接头。
优选的是，所述第一连接头具有分别向着不同方向的第一上枢接头、第二上枢接头和第三上枢接头，所述第二连接头具有分别向着不同方向的第一下枢接头、第二下枢接头和第三下枢接头，其中，所述第一大梁的第二端通过所述第一上枢接头枢转连接至所述第一连接头，所述第二大梁的第二端通过所述第一下枢接头枢转连接至第二连接头。
优选的是，还包括锁紧件，所述锁紧件在正常使用时将所述第一连接头和所述第二连接头锁定在一起，而当需要折叠时，所述锁紧件被松开。
优选的是，所述至少两根后叉杆包括第一后叉杆和第二后叉杆，所述第一后叉杆包括第一上后叉杆和第一下后叉杆，所述第二后叉杆包括第二上后叉杆和第二下后叉杆。
优选的是，所述至少两根后叉杆包括第一后叉杆和第二后叉杆，所述第一后叉杆包括第一上后叉杆和第一下后叉杆，所述第二后叉杆包括第二上后叉杆和第二下后叉杆，各所述后叉杆分别具有第一端和第二端，所述第一上后叉杆的第一端通过所述第三上枢接头枢转连接至所述第一连接头，所述第二上后叉杆的第一端通过所述第二上枢接头枢转连接至所述第一连接头，所述第一下后叉杆的第一端通过所述第三下枢接头枢转连接至所述第二连接头，所述第二下后叉杆的第一端通过第二下枢接头枢转连接至所述第二连接头，所述第一上后叉杆和所述第一下后叉杆的第二端枢转连接至位于所述后轮内侧的后轮固定座， 所述第二上后叉杆和第二下后叉杆的第二端枢转连接至位于另一个所述后轮内侧的后轮固定座。
优选的是，还包括推杆组件，用于为所述可折叠的儿童车的折叠提供导向。
优选的是，所述至少一个连接头包括第一连接头和第二连接头，所述推杆组件包括推杆，所述第一连接头相对于所述推杆是可滑动的，而所述第二连接头相对于所述推杆固定。
优选的是，所述可折叠的儿童车是可折叠的儿童三轮车，所述可折叠的儿童三轮车包括设置在所述车架主体前部的一个前轮、设置在所述车架主体后部的两个后轮、以及设置在所述车架主体前部的转向组件。
优选的是，所述可折叠的儿童三轮车还包括用于驱动所述前轮的脚蹬和/或固定到所述车架主体的踏板。
优选的是，所述可折叠的儿童三轮车的各部分在折叠之后自下而上分别是：所述后轮组件、所述车架主体、所述转向组件及所述前轮组件、以及所述座位组件。
本发明还提供了一种可折叠的车架，用于可折叠的儿童车，所述车架包括：头管；第一大梁和第二大梁，所述第一大梁和所述第二大梁分别具有第一端和第二端，所述第一大梁的第一端枢转连接至所述头管，所述第二大梁的第一端枢转连接至所述头管；第一连接头和第二连接头，所述第一连接头具有分别向着不同方向的第一上枢接头、第二上枢接头和第三上枢接头，所述第二连接头具有分别向着不同方向的第一下枢接头、第二下枢接头和第三下枢接头，所述第一大梁的第二端通过所述第一上枢接头枢转连接至所述第一连接头，所述第二大梁的第二端通过所述第一下枢接头枢转连接至所述第二连接头，所述第一连接头和所述第二连接头能彼此相向地或相离地运动；以及第一后叉杆和第二后叉杆，所述第一后叉杆包括第一上后叉杆和第一下后叉杆，所述第二后叉杆包括第二上后叉杆和第二下后叉杆，各所述后叉杆分别具有第一端和第二端，所述第一上后叉杆的第一端通过所述第三上枢接头枢转连接至所述第一连接头，所述第二上后叉杆的第一端通过所述第二上枢接头枢转连接至所述第一连接头，所述第一下后叉杆的第一端通过所述第三下枢接头枢转连接至所述第二连接头，所述第二下后叉杆的第一端通过所述第二下枢接头枢转连接至所述第二连接头，所述第一上后叉杆和所述第一下后叉杆的第二端枢转连接至位于一个后轮内侧的后轮固定座，所述第二上后叉杆和所述第二下后叉杆的第二端枢 转连接至位于另一个后轮内侧的后轮固定座。
优选的是，可折叠的车架还包括推杆组件，所述推杆组件包括可伸缩的推杆，所述第一连接头相对于所述推杆是可滑动的，而所述第二连接头相对于所述推杆固定。
本发明的可折叠儿童车巧妙地应用了平面连杆机构的原理，其在折叠时无需拆卸零部件，可实现“一键式”的折叠，操作起来非常方便快捷。而且，与现有技术相比，本发明的可折叠儿童车在折叠后的体积更加紧凑，尤其是显著减小了纵向尺寸。
附图说明
图1是根据本发明第一实施例的儿童三轮车的侧视图，该儿童三轮车没有安装推杆组件；
图2是图1所示儿童三轮车的立体分解图；
图3是图1所示儿童三轮车的前视图；
图4是从另一角度看的图1所示儿童三轮车的立体分解图；
图5是车架主体的立体分解图；
图6是从另一角度看的车架主体的立体分解图；
图7是根据本发明第二实施例的儿童三轮车的侧视图，该儿童三轮车安装有推杆组件；
图8是图7所示儿童三轮车的前视图；
图9是图7所示儿童三轮车被折叠后的立体图；
图10是图7所示儿童三轮车的立体分解图；
图11是从另一角度看的图7所示儿童三轮车的立体分解图；
图12是根据本发明第二实施例的车架主体的立体分解图；以及
图13是从另一角度看的根据本发明第二实施例的车架主体的立体分解图。
具体实施方式
以下将结合附图来详细描述根据本发明的儿童三轮车的优选实施例，附图中凡是相同的零部件都用相同的标号来表示。文中所用的术语“前”、“后”、“上”、“下”仅表示相对的位置关系，并不构成特定的限制。
如图1－4所示，根据本发明第一实施例的可折叠儿童三轮车包括：车架主 体1、设置在车架主体1前部的转向组件2、设置在车架主体1前部且包括一个前轮24的前轮组件、设置在车架主体1后部且包括两个后轮3的后轮组件、以及设置在车架主体1上部的座位组件4。
车架主体1主要包括头管22、第一大梁11和第二大梁12、第一连接头13和第二连接头14、第一后叉杆15和第二后叉杆16。车架主体1的结构将在下文中作详细描述。
转向组件2插设在车架主体1的头管22中。转向组件2包括把手21，用于控制儿童三轮车的行进方向。更具体地说，转向组件2连接至前叉23。前叉23的一端也插设在车架主体1的头管22中，前叉23的另一端安装有前轮组件。前轮24由脚蹬25驱动。骑行的儿童可一边踩踏脚蹬25行进，一边通过转向组件2的把手21来操控儿童三轮车的行进方向。
座位组件4设置在车架主体1的上部，优选的是可拆卸地安装到位于车架主体1上的固定座上。座位组件4可例如包括围栏、靠背等，这些部件优选是可枢转折叠的，以便于整个儿童三轮车的折叠。另外，为乘坐更加舒适，还可以设置固定到车架主体1的踏板41，以供乘坐的儿童踏放脚。
以下将进一步结合图5和图6来详细描述车架主体1的结构。
如图所示，第一大梁11和第二大梁12分别具有第一端或称前端以及第二端或称后端。头管22设置有连接块5，连接块5可例如包括上连接块51和下连接块52。第一大梁11的第一端通过上连接块51枢转连接至头管22。第二大梁12的第一端通过下连接块52枢转连接至头管22。第一连接头13具有分别向着不同方向的第一上枢接头131、第二上枢接头132和第三上枢接头133。类似地，第二连接头14具有分别向着不同方向的第一下枢接头141、第二下枢接头142和第三下枢接头143。第一大梁11的第二端通过第一上枢接头131枢转连接至第一连接头13。第二大梁12的第二端通过第一下枢接头141枢转连接至第二连接头14。
第一后叉杆15和第二后叉杆16的结构基本相同。在本实施例中，第一后叉杆15包括第一上后叉杆151和第一下后叉杆152，第二后叉杆16包括第二上后叉杆161和第二下后叉杆162。各后叉杆分别具有前端或称第一端以及后端或称第二端。第一上后叉杆151的第一端通过第三上枢接头133枢转连接至第一连接头13，第二上后叉杆161的第一端通过第二上枢接头132枢转连接至第一连接头13。第一下后叉杆152的第一端通过第三下枢接头143枢转连接至 第二连接头14，第二下后叉杆162的第一端通过第二下枢接头142枢转连接至第二连接头14。第一上后叉杆151和第一下后叉杆152的第二端枢转连接至位于一个后轮内侧的后轮固定座31。第二上后叉杆161和第二下后叉杆162的第二端枢转连接至位于另一个后轮内侧的后轮固定座31。
第一连接头13和第二连接头14可沿大致垂向彼此相向地或相离地运动。优选地，当儿童三轮车处于正常使用状态时，第一连接头13和第二连接头14相互接触；当儿童三轮车处于折叠状态时，第一连接头13和第二连接头14相互分开。另外，优选地可设置锁紧件6，以在正常使用时将第一连接头13和第二连接头14锁定在一起。当需要折叠时，可将锁紧件6松开。
当要折叠根据本发明第一实施例的儿童三轮车时，可先松开锁紧件6，用手将第一连接头13和第二连接头14分开，使第一大梁11、第一上后叉杆151和第二上后叉杆161随第一连接头13一起向第一方向运动并逐渐向内聚拢，同时使第二大梁12、第二下后叉杆152和第二下后叉杆162随第二连接头14一起向与第一方向相反的第二方向运动并逐渐向内聚拢。最终使车架主体1形成收折状态，其中第一大梁11、第一上后叉杆151、第二上后叉杆161、第二大梁12、第二下后叉杆152和第二下后叉杆162相互靠近，且基本上相互平行，由此形成紧凑的折叠状态。与此同时，使儿童三轮车的其余部件(例如转向组件2、座位组件4)也随车架主体1的折叠运动而分别向内收折。这样就完成了整个儿童三轮车的折叠过程。
当要将儿童三轮车从折叠状态打开成正常使用状态时，可先展开儿童三轮车的座位组件4，用两手分别握着转向组件2和第一上后叉杆151或第二上后叉杆161向外展开。在展开过程中，第一接头13和第二接头14相向地运动，使第一大梁11、第一上后叉杆151、第二上后叉杆161、第二大梁12、第二下后叉杆152和第二下后叉杆162也跟随着第一接头13和第二接头14的运动而运动，从而展开到位。最后，将锁紧件6锁紧就能使儿童三轮车处于正常使用状态。
如将在下文中提及的，儿童三轮车的各部分在折叠之后自下而上分别是：后轮组件、车架主体1、转向组件2、前轮组件、以及座位组件4。
以下将结合图7－图13来描述根据本发明第二实施例的可折叠儿童三轮车。与前述第一实施例不同的是，根据本发明第二实施例的可折叠儿童三轮车还包括推杆组件7。该推杆组件7能像传统的推杆组件那样供成人使用。更重要的 是，在本发明中，推杆组件7还起到了为儿童三轮车的折叠提供导向的作用。
推杆组件7主要包括把手73和推杆。推杆优选是可伸缩的。在第一连接头13上设置有供推杆穿过的通孔71，在第二连接头14上设置有可与推杆接合的连接管72。因此，第一连接头13相对于推杆是可滑动的，而第二连接头14则相对于推杆固定。推杆具有近端(即设置有把手73的那一端)和远端(即与第二连接头14连接的那一端)。
根据本发明第二实施例的儿童三轮车的折叠过程如下。首先将推杆缩短并且松开锁紧件6。然后用手将第一连接头13和第二连接头14分开。接着，使第一大梁11、第一上后叉杆151和第二上后叉杆161随第一连接头13一起沿着推杆向推杆的近端运动并逐渐向内朝着推杆聚拢；同时使第二大梁12、第二下后叉杆152和第二下后叉杆162在推杆的远端从第二连接头14逐渐向内朝着推杆聚拢。最终使车架主体1形成收折状态，其中第一大梁11、第一上后叉杆151、第二上后叉杆161、第二大梁12、第二下后叉杆152和第二下后叉杆162非常靠近推杆，且基本上平行于推杆，由此形成紧凑的折叠状态。与此同时，使儿童三轮车的其余部件(例如转向组件2、座位组件4)也随车架主体1的运动而依次向内收折。这样就完成了整个儿童三轮车的折叠过程。
图9示出了折叠后的儿童三轮车。从图中可以看到，儿童三轮车的各部分在折叠之后自下而上分别是：后轮组件、车架主体1、转向组件2、前轮组件、以及座位组件4。
当要将儿童三轮车从折叠状态打开成正常使用状态时，可先展开儿童三轮车的座位组件4，用两手分别握着转向组件2和第一上后叉杆151或第二上后叉杆161向外展开。在展开过程中，第一接头13和第二接头14相向地运动，使第一大梁11、第一上后叉杆151、第二上后叉杆161、第二大梁12、第二下后叉杆152和第二下后叉杆162也跟随着第一接头13和第二接头14的运动而运动，从而展开到位。最后，将锁紧件6锁紧就能使儿童三轮车处于正常使用状态。
以上对根据本发明优选实施例的可折叠儿童三轮车进行了描述。应理解的是，本发明的关于折叠结构的构思并不限于儿童三轮车，而是可更广泛地应用于例如儿童推车、溜娃车等产品。相应地，可以将一个前轮变成两个或更多个前轮；或者可以移除转向组件和脚蹬，如果需要，可采用至少一个万向轮来作前轮。
本发明的可折叠儿童车的车架主体也是可以变化的。例如，上述实施例中包括第一上后叉杆151和第一下后叉杆152的第一后叉杆15以及包括第二上后叉杆161和第二下后叉杆162的第二后叉杆16可以采用单根的形式，也可以采用单根有多段的形式。例如，上述实施例中的第一大梁11和第二大梁12也可以简化成一根。换言之，可以形成一根大梁配两根后叉杆、一根大梁配四根或更多根后叉杆的配置。
本发明所采用的连接块、连接头、枢接头、锁紧件等零部件都是本领域技术人员公知的，但也可以采用其它一些布置形式。例如，在上述实施例中第一大梁11和第二大梁12的第一端分别枢转连接至两个连接块，也可以将第一大梁11和第二大梁12的第一端枢转连接至一个连接块。应理解的是，本文中所使用的术语“头管”应涵盖各种连接结构。
虽然以上对本发明进行了详细的描述，但应该理解的是，本领域的技术人员应该可以在以上揭示内容的基础上做出各种变化形式。因此，本发明的保护范围仅由所附权利要求书来限定。
以下是各附图标记的说明：
1：车架主体
2：转向组件
3：后轮
4：座位组件
5：连接块
6：锁紧件
7：推杆组件
11：第一大梁
12：第二大梁
13：第一连接头
14：第二连接头
15：第一后叉杆
16：第二后叉杆
21：把手
22：头管
23：前叉
24：前轮
25：脚蹬
31：后轮固定座
41：踏板
51：上连接块
52：下连接块
71：通孔
72：连接管
73：把手
131：第一上枢接头
132：第二上枢接头
133：第三上枢接头
141：第一下枢接头
142：第二下枢接头
143：第三下枢接头
151：第一上后叉杆
152：第一下后叉杆
161：第二上后叉杆
162：第二下后叉杆

Claims (13)

  1. 一种可折叠的儿童车，具有展开状态和折叠状态，所述可折叠的儿童车包括车架主体、设置在所述车架主体前部且包括至少一个前轮的前轮组件、设置在所述车架主体后部且包括至少两个后轮的后轮组件、以及设置在所述车架主体上部的座位组件，其中，所述车架主体包括：头管；至少一根大梁，所述大梁具有第一端和第二端，所述大梁的第一端枢转连接至所述头管；至少一个连接头，所述大梁的第二端枢转连接至所述连接头；至少两根后叉杆，所述后叉杆具有第一端和第二端，所述后叉杆的第一端枢转连接至所述连接头，所述后叉杆的第二端连接至所述后轮组件。
  2. 如权利要求1所述的可折叠的儿童车，其特征在于，所述至少一根大梁包括第一大梁和第二大梁，所述第一大梁和所述第二大梁的第一端都通过至少一个连接块枢转连接至所述头管，所述至少一个连接头包括第一连接头和第二连接头，所述第一连接头和所述第二连接头能相互接触和相互分开，所述第一大梁和所述第二大梁的第二端都枢转连接至所述第一连接头和所述第二连接头。
  3. 如权利要求2所述的可折叠的儿童车，其特征在于，所述第一连接头具有分别向着不同方向的第一上枢接头、第二上枢接头和第三上枢接头，所述第二连接头具有分别向着不同方向的第一下枢接头、第二下枢接头和第三下枢接头，其中，所述第一大梁的第二端通过所述第一上枢接头枢转连接至所述第一连接头，所述第二大梁的第二端通过所述第一下枢接头枢转连接至第二连接头。
  4. 如权利要求2所述的可折叠的儿童车，其特征在于，还包括锁紧件，所述锁紧件在正常使用时将所述第一连接头和所述第二连接头锁定在一起，而当需要折叠时，所述锁紧件被松开。
  5. 如权利要求1所述的可折叠的儿童车，其特征在于，所述至少两根后叉杆包括第一后叉杆和第二后叉杆，所述第一后叉杆包括第一上后叉杆和第一下后叉杆，所述第二后叉杆包括第二上后叉杆和第二下后叉杆。
  6. 如权利要求3所述的可折叠的儿童车，其特征在于，所述至少两根后叉杆包括第一后叉杆和第二后叉杆，所述第一后叉杆包括第一上后叉杆和第一下后叉杆，所述第二后叉杆包括第二上后叉杆和第二下后叉杆，各所述后叉杆分别具有第一端和第二端，所述第一上后叉杆的第一端通过所述第三上枢接头枢 转连接至所述第一连接头，所述第二上后叉杆的第一端通过所述第二上枢接头枢转连接至所述第一连接头，所述第一下后叉杆的第一端通过所述第三下枢接头枢转连接至所述第二连接头，所述第二下后叉杆的第一端通过第二下枢接头枢转连接至所述第二连接头，所述第一上后叉杆和所述第一下后叉杆的第二端枢转连接至位于所述后轮内侧的后轮固定座，所述第二上后叉杆和第二下后叉杆的第二端枢转连接至位于另一个所述后轮内侧的后轮固定座。
  7. 如权利要求1所述的可折叠的儿童车，其特征在于，还包括推杆组件，用于为所述可折叠的儿童车的折叠提供导向。
  8. 如权利要求1所述的可折叠的儿童车，其特征在于，所述至少一个连接头包括第一连接头和第二连接头，所述推杆组件包括推杆，所述第一连接头相对于所述推杆是可滑动的，而所述第二连接头相对于所述推杆固定。
  9. 如以上任一项权利要求所述的可折叠的儿童车，其特征在于，所述可折叠的儿童车是可折叠的儿童三轮车，所述可折叠的儿童三轮车包括设置在所述车架主体前部的一个前轮、设置在所述车架主体后部的两个后轮、以及设置在所述车架主体前部的转向组件。
  10. 如权利要求9所述的可折叠的儿童车，其特征在于，所述可折叠的儿童三轮车还包括用于驱动所述前轮的脚蹬和/或固定到所述车架主体的踏板。
  11. 如权利要求9所述的可折叠的儿童车，其特征在于，所述可折叠的儿童三轮车的各部分在折叠之后自下而上分别是：所述后轮组件、所述车架主体、所述转向组件及所述前轮组件、以及所述座位组件。
  12. 一种可折叠的车架，用于可折叠的儿童车，所述车架包括：
    头管；
    第一大梁和第二大梁，所述第一大梁和所述第二大梁分别具有第一端和第二端，所述第一大梁的第一端枢转连接至所述头管，所述第二大梁的第一端枢转连接至所述头管；
    第一连接头和第二连接头，所述第一连接头具有分别向着不同方向的第一上枢接头、第二上枢接头和第三上枢接头，所述第二连接头具有分别向着不同方向的第一下枢接头、第二下枢接头和第三下枢接头，所述第一大梁的第二端通过所述第一上枢接头枢转连接至所述第一连接头，所述第二大梁的第二端通过所述第一下枢接头枢转连接至所述第二连接头，所述第一连接头和所述第二连接头能彼此相向地或相离地运动；以及
    第一后叉杆和第二后叉杆，所述第一后叉杆包括第一上后叉杆和第一下后叉杆，所述第二后叉杆包括第二上后叉杆和第二下后叉杆，各所述后叉杆分别具有第一端和第二端，所述第一上后叉杆的第一端通过所述第三上枢接头枢转连接至所述第一连接头，所述第二上后叉杆的第一端通过所述第二上枢接头枢转连接至所述第一连接头，所述第一下后叉杆的第一端通过所述第三下枢接头枢转连接至所述第二连接头，所述第二下后叉杆的第一端通过所述第二下枢接头枢转连接至所述第二连接头，所述第一上后叉杆和所述第一下后叉杆的第二端枢转连接至位于一个后轮内侧的后轮固定座，所述第二上后叉杆和所述第二下后叉杆的第二端枢转连接至位于另一个后轮内侧的后轮固定座。
  13. 如权利要求12所述的可折叠的车架，其特征在于，还包括推杆组件，所述推杆组件包括可伸缩的推杆，所述第一连接头相对于所述推杆是可滑动的，而所述第二连接头相对于所述推杆固定。
PCT/CN2019/082606 2019-04-15 2019-04-15 可折叠的儿童车 WO2020210927A1 (zh)

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