WO2014110963A1 - 婴儿推车 - Google Patents

婴儿推车 Download PDF

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Publication number
WO2014110963A1
WO2014110963A1 PCT/CN2013/090537 CN2013090537W WO2014110963A1 WO 2014110963 A1 WO2014110963 A1 WO 2014110963A1 CN 2013090537 W CN2013090537 W CN 2013090537W WO 2014110963 A1 WO2014110963 A1 WO 2014110963A1
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WO
WIPO (PCT)
Prior art keywords
push rod
bracket
frame
slider
rear wheel
Prior art date
Application number
PCT/CN2013/090537
Other languages
English (en)
French (fr)
Inventor
武海军
Original Assignee
好孩子儿童用品有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201320020279.0U external-priority patent/CN203111283U/zh
Priority claimed from CN201320023397.7U external-priority patent/CN203111255U/zh
Application filed by 好孩子儿童用品有限公司 filed Critical 好孩子儿童用品有限公司
Priority to EP13871464.7A priority Critical patent/EP2946985B1/en
Publication of WO2014110963A1 publication Critical patent/WO2014110963A1/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
    • 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
    • B62B7/062—Coupling unit between front wheels, rear wheels and handle
    • 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
    • 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
    • B62B9/203—Handle bars; Handles movable from front end to rear end position

Definitions

  • the utility model relates to a baby stroller.
  • a stroller of the prior art includes a cart frame having an unfolded position and a folded position, a front wheel assembly disposed at a front portion of the bottom of the cart frame, and disposed at the bottom of the stud frame a rear wheel assembly of the portion, a frame locking mechanism for locking the cart frame in the deployed position, and a human body receiving device disposed on the cart frame.
  • a cart frame having an unfolded position and a folded position
  • a front wheel assembly disposed at a front portion of the bottom of the cart frame, and disposed at the bottom of the stud frame a rear wheel assembly of the portion
  • a frame locking mechanism for locking the cart frame in the deployed position
  • a human body receiving device disposed on the cart frame.
  • the technical problem to be solved by the present invention is to provide a baby stroller.
  • a technical solution adopted by the present invention is: a baby stroller comprising a foldable frame, a seat disposed on the frame, a front wheel assembly, a rear wheel assembly, A locking mechanism that locks the frame in an unfolded state.
  • the frame includes a pusher frame, a foldable base frame, and the pusher frame includes a pusher seat that is rotatably coupled to the base frame through the first shaft, and a push rod that is only slidably disposed on the pusher base.
  • the locking mechanism includes a bracket locking mechanism for locking the base frame, a reversing locking mechanism for locking the push rod bracket and the base frame on the push rod bracket and/or the base frame, being disposed on the push rod base and/or pushing A telescopic locking mechanism on the rod for locking the push rod and the push rod seat.
  • the base frame includes a front bracket and a rear bracket, the front wheel assembly is disposed at a lower portion of the front bracket, and the rear wheel assembly is disposed at a lower portion of the rear bracket, and the upper portion of the front bracket and the upper portion of the rear bracket bypass the first One shaft is connected in a relatively rotational manner.
  • the front wheel assembly includes a front wheel joint and a front wheel rotatably coupled to the front wheel joint.
  • the front wheel joint and the front bracket are rotatably connected by the front wheel steering shaft, and the front wheel joint and the front bracket are disposed between A front wheel orientation mechanism having a locked position and an unlocked position.
  • the front wheel orientation mechanism includes front wheel elastics that are stably in the locked position.
  • the front wheel steering shaft preferably extends in the vertical direction.
  • the rear wheel assembly includes a rear wheel joint, a rear wheel rotatably coupled to the rear wheel joint, and the rear wheel joint and the rear bracket are rotatably coupled by the rear wheel steering shaft.
  • a rear wheel orientation mechanism having a locked position and an unlocked position is provided between the rear wheel joint and the rear bracket, the rear wheel orientation mechanism includes a rear wheel elastic member that is stably in the locked position, and the rear wheel steering shaft preferably follows the vertical The direction extends.
  • the base frame is provided with a front wheel control mechanism for controlling the unlocking of the front wheel orientation mechanism, and a rear wheel control mechanism for controlling the unlocking of the rear wheel orientation mechanism.
  • the front wheel control mechanism includes a front traction cable
  • the rear wheel control mechanism includes a rear A traction rod positioning mechanism is arranged between the traction cable and the base frame and the push rod frame.
  • the pusher frame has a first working position, a second working position and a third working position.
  • the first working position the push rod is inclined from bottom to top, and the front traction cable is pulled against the elastic force of the front wheel elastic member.
  • the front wheel orientation mechanism is in the unlocked position, the rear wheel orientation mechanism is in the locked position; in the second working position, the push rod is tilted from bottom to top, the front wheel orientation mechanism is in the locked position, and the rear traction cable overcomes the elasticity of the rear wheel elastic member
  • the force is pulled, the rear wheel orientation mechanism is in the unlocked position; in the third working position, the push rod is maintained in the substantially vertical direction, the front traction cable is pulled against the elastic force of the front wheel elastic member, and the front wheel orientation mechanism is unlocked Position, the rear traction cable is pulled against the elastic force of the rear wheel elastic member, and the rear wheel orientation mechanism is in the unlocked position.
  • the terms "before” and "after” as used herein and elsewhere are defined according to user habits and cannot be understood as general
  • the front wheel control mechanism further includes a front slider slidably disposed on the base frame on the front side of the first shaft, a front steering member fixed or rotatably disposed on the front bracket, and a front traction cable winding
  • the upper portion thereof is connected to the front sliding block, and the first receiving groove is formed on the push rod seat, and the first slope is disposed on one side opening portion of the first receiving groove, and the push rod frame is rotated around the first axis to In the second working position, the front slider is inserted in the first receiving slot, and the front slider is adjacent to the first axis.
  • the front slider is The first receiving groove is disengaged, and the front slider is away from the first axis.
  • the front slider may be slidably disposed on the front bracket.
  • the rear wheel control mechanism further includes a rear slider slidably disposed on the base frame and located at a rear side of the first shaft, a rear steering member fixed or rotatably disposed on the rear bracket, and a rear traction cable winding
  • the upper portion thereof is connected to the rear sliding block, and the second receiving groove is disposed on the push rod seat, and the second slope disposed on one side opening portion of the second receiving groove is turned to the first axis.
  • the rear slider In the second working position or the third working position, the rear slider is separated from the second receiving slot, and the rear slider is away from the first axis.
  • the pusher frame is rotated around the first axis to the first working position, the rear slider Inserted in the second receiving slot, the rear slider is close to the first axis.
  • the rear slider is slidably disposed on the rear bracket.
  • the front wheel orientation mechanism includes a front wheel orientation slider that is slid or rotated on the front bracket, and the front wheel elastic member is disposed between the front wheel orientation slider and the front bracket, and the lower portion of the front traction cable is The front wheel orientation slider is connected; and/or the rear wheel orientation mechanism includes a rear wheel orientation slider that is slid or rotated on the rear bracket, and the rear wheel elastic member is disposed between the rear wheel orientation slider and the rear bracket, and the rear traction The lower part of the cable is connected to the rear wheel orientation slider.
  • the pedestal further includes:
  • first bottom link the front portion of the first bottom link is rotatably coupled to the front bracket about the second axis;
  • the rear portion of the second bottom link is rotatably coupled to the rear bracket about a third axis, the rear portion of the first bottom link and the second bottom link
  • the front portion is rotatably coupled around the fourth shaft, and the bracket locking mechanism is disposed between the first bottom link and the second bottom link.
  • the bracket locking mechanism includes an unlocking button for unlocking, and the pusher can be in a process of sliding the push rod downward relative to the push rod seat Pressing the unlock button causes the bracket locking mechanism to unlock.
  • the reversing locking mechanism is capable of locking the pusher frame relative to the base frame in a first working position and a second working position.
  • the pusher seat, the upper portion of the front bracket and the upper portion of the rear bracket are rotatably coupled about the first shaft.
  • the reversing locking mechanism includes a locking member having a locking tongue pivotally coupled to the push rod base about a fifth axis, and is disposed at an upper portion of the front bracket and/or the rear portion a first locking slot and a second locking slot of the upper portion of the bracket, the pusher bracket having a first working position and a second working position, wherein when the pusher frame is in the first working position, the locking tongue is inserted in the In the first lock groove, when the pusher frame is in the second working position, the lock tongue is inserted in the second lock groove, and the fifth axis is offset from the first axis.
  • the telescopic locking mechanism is capable of locking the push rod relative to the push rod base in at least two positions, the first position being the push rod substantially at the upper portion of the push rod base and the second position being the push rod Basically located in the lower part of the push rod seat.
  • the telescopic locking mechanism includes a first positioning slot formed on the push rod base, and a first opening slot on the push rod base and below the first positioning slot. a second positioning groove, rotating or slidingly disposed on the lower first positioning block of the push rod, rotating or sliding a second positioning block disposed at an upper portion of the push rod, when the cart frame is in the deployed position
  • the first positioning block is inserted into the first positioning slot, and when the cart frame is in the folded position, the second positioning block is inserted into the second positioning slot of the weight.
  • the push rod is provided with a control mechanism for controlling the movement of the first positioning block and the second positioning block.
  • the lower side of the second positioning groove has a first slope that can be in contact with the first positioning block to exit downwardly from the second positioning groove
  • the upper corner portion of the first positioning block has a second inclined surface that can be in contact with the upper portion of the opening of the second positioning groove to withdraw upwardly from the second positioning groove
  • the lower corner portion of the second positioning block has the same
  • the lower portion of the opening of the first positioning groove is in contact with the third inclined surface of the first positioning groove.
  • the front wheel assembly is disposed at a bottom front portion of the base frame, and the rear wheel assembly is disposed at a bottom rear portion of the base frame.
  • up and down orientation words are defined in the position where the cart frame is in the deployed position, and the position of the front wheel assembly is the front and the position of the rear wheel assembly is the rear.
  • the utility model has the following advantages compared with the prior art: the base frame constitutes a link mechanism capable of being separately folded, and during the folding process, the push rod can slide downward relative to the push rod seat, thereby reducing the height, Smaller after folding.
  • Figure 1 is a side view of the cart frame in a deployed position (the pusher frame is in the first working position);
  • Figure 2 is a side view of the cart frame in a deployed position (the pusher frame is in a third working position);
  • Figure 3 is a side view of the cart frame in the deployed position (the pusher frame is in the second working position);
  • Figure 4 is a plan view of Figure 2;
  • Figure 5 is an enlarged cross-sectional view taken along line A-A of Figure 4.
  • Figure 6 is an enlarged cross-sectional view taken along line B-B of Figure 4.
  • Figure 7 is a side view of the cart frame in a folded position
  • Figure 8 is a plan view of Figure 1;
  • Figure 9 is an enlarged cross-sectional view taken along line C-C of Figure 8.
  • Figure 10 is a cross-sectional view taken along line D-D of Figure 8.
  • Figure 11 is a plan view of Figure 3;
  • 71 a lock member
  • 72 a first lock groove
  • 73 a second lock groove
  • 81 a first positioning block
  • 82 a second positioning block
  • 83 a first positioning slot
  • 84 a second positioning slot
  • a stroller includes a cart frame having a deployed position and a folded position, a seat 3, a front wheel assembly 4, a rear wheel assembly 5 for locking the cart frame in a deployed position.
  • the lower locking mechanism As shown in the accompanying drawings, a stroller includes a cart frame having a deployed position and a folded position, a seat 3, a front wheel assembly 4, a rear wheel assembly 5 for locking the cart frame in a deployed position.
  • the lower locking mechanism is shown in the accompanying drawings.
  • the cart frame includes a detachable base frame 1 and a pusher frame 2, and the pusher frame 2 includes a pusher base 21 rotatably coupled to the base frame 1 through the first shaft 91, and is slidably disposed on the push rod base 21 only.
  • the push rod 22 includes a bracket locking mechanism for locking the base frame 1, a reversing locking mechanism disposed between the push rod base 21 and the base frame 1, and a telescopic mechanism disposed between the push rod base 21 and the push rod 22. Locking mechanism.
  • the first shaft 91 is located on the push rod holder 21.
  • the front wheel assembly 4 is disposed at the bottom front portion of the base frame 1, and the rear wheel assembly 5 is disposed at the bottom rear portion of the base frame 1.
  • the pedestal 1 includes:
  • the front wheel assembly 4 is disposed at a lower portion of the front bracket 11;
  • the rear bracket 12, the upper portion of the front bracket 11 and the upper portion of the rear bracket 12 are rotatably connected around the first shaft 91, and the rear wheel assembly 5 is disposed at the lower portion of the rear bracket 12;
  • first bottom link 13 the front portion of the first bottom link 13 is rotatably coupled to the front bracket 11 about the second shaft 92;
  • the second bottom link 14 and the rear portion of the second bottom link 14 are rotatably coupled to the rear bracket 12 about the third shaft 93.
  • the rear portion of the first bottom link 13 and the front portion of the second bottom link 14 are wound around the fourth portion.
  • the shaft 94 is rotatably coupled, and the bracket locking mechanism is disposed between the first bottom link 13 and the second bottom link 14.
  • the front bracket 11, the rear bracket 12, the first bottom link 13, and the second bottom link 14 constitute a four-bar linkage mechanism, and the first shaft 91, the second shaft 92, the third shaft 93 and the fourth shaft 94 have four rotation shafts. As long as any one of the rotating shafts is locked, the four-bar linkage mechanism can be locked to form a stable triangular mechanism.
  • the bracket locking mechanism is disposed between the first bottom link 13 and the second bottom link 14, and includes an unlocking button 61 for unlocking, when the push rod 22 slides downward relative to the push rod seat 21.
  • the push rod 22 can press the unlock button 61 to unlock the bracket locking mechanism.
  • One rotation or sliding is provided with an elastic unlocking button 61, and the other of the two is provided with a locking groove.
  • the base frame 1 can also adopt other structures, such as omitting the second bottom link 14, the front portion of the first bottom link 13 and the front bracket 11 are rotatably connected around the second axis, first The rear portion of the bottom link 13 and the rear bracket 12 are slidable in the up and down direction or in the axial direction.
  • the front wheel assembly 4 includes a front wheel joint 41, a front wheel 42 rotatably coupled to the front wheel joint 41, and a front wheel joint 41 and a front bracket 11 are rotatably coupled around the front wheel steering shaft 43, the front wheel joint 41 and the front bracket 11
  • a front wheel orientation mechanism having a locked position and an unlocked position including a front wheel elastic member 45 that is stably in a locked position, the front wheel steering shaft 43 extending in a vertical direction is disposed therebetween.
  • the rear wheel assembly 5 includes a rear wheel joint 51, a rear wheel 52 rotatably coupled to the rear wheel joint 51, and a rear wheel joint 51 and a rear bracket 12 are rotatably coupled around the rear wheel steering shaft 53, the rear wheel joint 51 and the rear bracket 12
  • a rear wheel orientation mechanism having a locked position and an unlocked position is provided, the rear wheel orientation mechanism including a rear wheel elastic member 55 that is stably in the locked position, and the rear wheel steering shaft 53 extends in the vertical direction.
  • the base frame 1 is provided with a front wheel control mechanism for controlling the unlocking of the front wheel orientation mechanism, and a rear wheel control mechanism for controlling the unlocking of the rear wheel orientation mechanism.
  • the front wheel control mechanism includes a front traction cable 33
  • the rear wheel control mechanism includes the rear Traction cable 123.
  • the pusher frame 2 has a first working position and a second working position.
  • the push rod 22 When the pusher frame 2 is rotated about the first axis 91 to the first working position, the push rod 22 is inclined from bottom to top, and the front traction cable 33 overcomes the front wheel.
  • the elastic force of the elastic member 45 is dragged, the front wheel orientation mechanism is in the unlocked position, and the rear wheel orientation mechanism is in the locked position.
  • the pusher frame 2 is rotated about the first shaft 91 to the second working position, the push rod 22 is from bottom to top. Tilting forward, the front wheel orientation mechanism is in the locked position, the rear traction cable 123 is dragged against the elastic force of the rear wheel elastic member 55, and the rear wheel orientation mechanism is in the unlocked position.
  • the pusher frame 2 also has a third working position in which the push rod is vertically held substantially in the up and down direction, and the front traction cable 33 is dragged against the elastic force of the front wheel elastic member 45, and the front wheel is oriented
  • the mechanism is in the unlocked position, the rear traction cable 123 is dragged against the elastic force of the rear wheel elastic member 55, and the rear wheel orientation mechanism is in the unlocked position.
  • the front wheel control mechanism further includes a front slider 31 slidably disposed on the base frame 1 and located on the front side of the first shaft 91, and a front steering member 32 fixed or rotatably disposed on the front bracket 11, and the front traction cable 33 is bypassed before After the steering member 32 is connected to the front slider 31, the front slider 31 is moved upward when the front traction cable 33 is pulled downward, and the front traction cable 33 is dragged upward when the front slider 31 is moved downward.
  • a first receiving groove 56 is defined in the push rod holder 21, and a first slope 57 is disposed on one side opening of the first receiving groove 56.
  • the block 31 is inserted into the first receiving slot 56, and the front slider 31 is adjacent to the first shaft 91.
  • the front slider 31 and the first slider 31 A receiving groove 56 is disengaged by the first slope 57, and the front slider 31 is away from the first shaft 91.
  • the front slider 31 is slidably disposed on the front bracket 11.
  • another front wheel control mechanism may be used to directly omit the front slider 31 and the front steering member 32, and the upper portion of the front traction cable 33 is directly connected to the push rod holder 21.
  • the rear wheel control mechanism further includes a rear slider 121 slidably disposed on the base frame 1 and located at a rear side of the first shaft 91, and fixed or rotated.
  • the rear steering member 122 on the rear bracket 12 is connected to the rear slider 121 after the rear traction cable 123 bypasses the rear steering member 122.
  • the rear traction cable 123 is pulled down, the rear slider 121 moves upward, and vice versa.
  • the block 121 moves downward, the rear traction cable is dragged upward.
  • a second receiving groove 58 is defined in the push rod holder 21 , and a second slope 59 is disposed on one side opening of the second receiving groove 58 .
  • the rear slider 121 and the second receiving groove 58 are separated by the second slope 59, and the rear slider 121 is away from the first shaft 91.
  • the rear slider 121 is reinserted into the second receiving groove 58 along the second slope 59, and the rear slider 121 is close to the first shaft 91.
  • the rear slider 121 is slidably disposed on the rear bracket 12.
  • the front wheel orientation mechanism includes a front wheel orientation slider 44 that is slid or rotated on the front bracket 11, and the front wheel elastic member 45 is disposed between the front wheel orientation slider 44 and the front bracket 11, the lower portion and the front of the front traction cable 33.
  • the wheel orientation sliders 44 are connected, and the rear wheel orientation mechanism includes a rear wheel orientation slider 54 disposed on the rear bracket 12, and the rear wheel elastic member 55 is disposed between the rear wheel orientation slider 54 and the rear bracket 12.
  • the lower portion of the rear traction cable 123 is coupled to the rear wheel orientation slider 54.
  • the reversing locking mechanism is capable of locking the pusher frame 2 relative to the base frame 1 in the first working position and the second working position.
  • the cart frame enables forward and reverse carts.
  • the upper portion of the push rod holder 21 and the front bracket 11 and the upper portion of the rear bracket 12 are rotatably connected around the first shaft 91.
  • the reversing locking mechanism includes a locking member 71 having a locking bolt rotatably coupled to the push rod holder 21 about the fifth shaft 95, a first locking groove 72 opening at an upper portion of the front bracket 11 and/or an upper portion of the rear bracket 12
  • the second locking slot 73 has a first working position and a second working position.
  • the pusher frame 2 When the pusher frame 2 is in the first working position, the pusher frame 2 is inclined rearward, and the locking tongue is inserted into the first locking groove 72. When the pusher frame 2 is in the second working position, the pusher frame 2 is tilted forward, the lock tongue is inserted in the second lock groove 73, and the fifth shaft 95 is offset from the first shaft 91.
  • the base frame 1 When the base frame 1 is in the deployed position, the front wheel bracket 11 and the rear wheel bracket 12 are in a fixed state, so the push rod bracket 12 can be locked with the front wheel bracket 11 or the rear wheel bracket 12.
  • the push rod 22 is slidably provided with a dial block, and when the dial block slides, the fifth shaft 95 of the lock member 71 can be rotated.
  • the lock member 71 may be slidably disposed on the push rod holder 21, and is switched between the first lock groove 72 and the second lock groove 73 by sliding.
  • the telescopic locking mechanism can lock the push rod 22 in the first working position and the second working position.
  • the push rod seat 21 is fixedly located at the lower portion of the push rod 22, and when the push rod 22 is in the first position In the second working position, the push rod holder 21 is fixedly located at the upper portion of the push rod 22.
  • the pusher frame 2 can be placed in a vertical position, and then the telescopic locking mechanism is unlocked, and the push rod 22 is pressed downward, and the push rod 22 can be The bracket locking mechanism is unlocked and the cart frame is folded.
  • the telescopic locking mechanism includes a first positioning slot 83 formed on the push rod base 21, a second positioning slot 84 that is defined on the push rod base 21 and located below the first positioning slot 83, and is slidably disposed on the push rod.
  • the lower first positioning block 81 of the second sliding block 82 is disposed on the upper portion of the push rod 22, and the first positioning block 81 is inserted into the first positioning slot 83 when the cart frame is in the deployed position.
  • the vehicle frame is in the folded position, and the second positioning block 82 is inserted into the second positioning groove 84 of the weight to lock the cart frame in the folded position.
  • the push rod 22 is provided with a control mechanism for controlling the movement of the first positioning block 81 and the second positioning block 82.
  • the specific structure of the control mechanism is not the gist of the present invention, and generally includes an operation button, a traction cable, a return elastic member, and the like. This will not be repeated here.
  • the lower side of the second positioning groove 84 has a first inclined surface that can be in contact with the first positioning block 81 so as to exit downwardly from the second positioning groove 84.
  • the upper corner of the first positioning block 81 has a second positioning groove. The upper portion of the opening of the 84 is in contact with the second inclined surface of the second positioning groove 84.
  • the second positioning groove 84 and the first positioning block 81 are not locked, and the lower corner portion of the second positioning block 82 has The first positioning groove 83 and the second positioning block 82 can not be locked when the push rod 22 is slid downward when the lower portion of the opening of the first positioning groove 83 is in contact with the third inclined surface of the first positioning groove 83.

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

Abstract

一种婴儿推车，包括具有展开位置与折叠位置的推车车架、座位（3）、前轮组件（4）、后轮组件（5）、用于将推车车架锁定于展开位置下的锁定机构，推车车架包括能够折叠的基架（1）、推杆架（2），推杆架（2）包括与基架（1）转动连接的推杆座（21）、仅仅滑动地设置在推杆座（21）上的推杆（22），锁定机构包括用于锁定基架（1）的支架锁定机构、设置于推杆座（21）与基架（1）之间的换向锁定机构、设置于推杆座（21）与推杆（22）之间的伸缩锁定机构。基架构成连杆机构能够实现单独折叠，在折叠过程中，推杆（22）相对推杆座（21）能够向下滑动，从而降低高度，折叠后体积较小。

Description

婴儿推车
技术领域
本实用新型涉及一种婴儿推车。
背景技术
现有技术中的儿童推车，包括具有展开位置与折叠位置的推车车架、设置于所述的推车车架底前部的前轮组件、设置于所述的推车车架底后部的后轮组件、将所述的推车车架锁定于展开位置下的车架锁定机构、设置于所述的推车车架上的人体收容装置。现有的推车车架的种类繁多，推车车架的杆件的数目不同，各杆件之间连接关系、连接位置不同，从而折叠原理与折叠方式各不相同。
实用新型内容
本实用新型要解决的技术问题是提供一种婴儿推车。
在解决上述技术问题，本实用新型采用的一种技术方案是：一种婴儿推车，包括具有可折叠的车架、设置于车架上的座位、前轮组件、后轮组件、用于将车架在展开状态下锁定的锁定机构。车架包括推杆架、能够折叠的基架，推杆架包括通过第一轴与基架转动连接的推杆座、仅仅可滑动地设置在推杆座上的推杆。锁定机构包括用于锁定基架的支架锁定机构、设置于推杆架和/或基架上的用于相对锁定推杆架与基架的换向锁定机构、设置于推杆座和/或推杆上的用于相对锁定推杆和推杆座的伸缩锁定机构。
在某些实施方式中，所述的基架包括前支架和后支架，前轮组件设置于前支架的下部，后轮组件设置于后支架的下部，前支架的上部与后支架的上部绕第一轴相对转动地连接。
在一具体实例中，前轮组件包括前轮接头、转动连接在前轮接头上的前轮，前轮接头与前支架通过前轮转向轴相转动连接，前轮接头与前支架之间设置有具有锁定位置与解锁位置的前轮定向机构。前轮定向机构包括使其稳定地处于锁定位置下的前轮弹性件。前轮转向轴优选沿着铅垂方向延伸。后轮组件包括后轮接头、转动连接在后轮接头上的后轮，后轮接头与后支架通过后轮转向轴转动连接。后轮接头与后支架之间设置有具有锁定位置与解锁位置的后轮定向机构，后轮定向机构包括使其稳定地处于锁定位置下的后轮弹性件，后轮转向轴优选沿着铅垂方向延伸。
基架上设置有用于控制所述的前轮定向机构解锁的前轮控制机构、用于控制后轮定向机构解锁的后轮控制机构，前轮控制机构包括前牵引索，后轮控制机构包括后牵引索，基架与推杆架之间设置有推杆定位机构。
推杆架具有第一工作位置、第二工作位置及第三工作位置，在第一工作位置下，推杆自下至上向后倾斜，前牵引索克服前轮弹性件的弹性力被牵拉，前轮定向机构处于解锁位置，后轮定向机构处于锁定位置；在第二工作位置下，推杆自下至上向前倾斜，前轮定向机构处于锁定位置，后牵引索克服后轮弹性件的弹性力被牵拉，后轮定向机构处于解锁位置；在第三工作位置下，推杆保持在基本竖直方向，前牵引索克服前轮弹性件的弹性力被牵拉，前轮定向机构处于解锁位置，后牵引索克服后轮弹性件的弹性力被牵拉，后轮定向机构处于解锁位置。本文此处及其它各处所提及的“前”、“后”是根据使用者习惯来定义的，不能被理解为一般性的技术用词，所谓“前”即车内的婴儿面对的方向，“后”即车内的婴儿背对的方向。
在一种优选的实施例中，前轮控制机构还包括滑动设置在基架上的位于第一轴前侧的前滑块、固定或转动设置在前支架上的前转向件，前牵引索绕过前转向件后其上部与前滑块相连接，推杆座上开设第一收容槽、设置于第一收容槽的一侧开口部的第一斜坡，当推杆架绕第一轴转至第二工作位置下，前滑块插在第一收容槽内，前滑块靠近第一轴，当推杆架绕第一轴转至第三工作位置或第一工作位置下，前滑块与第一收容槽相脱离，前滑块与第一轴相远离。
更进一步地，前滑块可以可滑动地设置在前支架上。
在一种优选的实施例中，后轮控制机构还包括滑动设置在基架上并位于第一轴后侧的后滑块、固定或转动设置在后支架上的后转向件，后牵引索绕过后转向件后其上部与后滑块相连接，推杆座上开设第二收容槽、设置于第二收容槽的一侧开口部的第二斜坡，当推杆架绕第一轴转至第二工作位置或第三工作位置下，后滑块与第二收容槽相脱离，后滑块与第一轴相远离，当推杆架绕第一轴转至第一工作位置下，后滑块插在第二收容槽内，后滑块与第一轴相靠近。
更进一步地，后滑块可滑动地设置在后支架上。
在一具体实施例中，前轮定向机构包括滑动或转动设置在前支架上的前轮定向滑块，前轮弹性件设置于前轮定向滑块与前支架之间，前牵引索的下部与前轮定向滑块相连接；以及/或者后轮定向机构包括滑动或转动设置在后支架上的后轮定向滑块，后轮弹性件设置于后轮定向滑块与后支架之间，后牵引索的下部与后轮定向滑块相连接。
在某些进一步实施方式中，所述的基架还包括：
第一底连杆，所述的第一底连杆的前部与所述的前支架绕第二轴转动连接；
第二底连杆，所述的第二底连杆的后部与所述的后支架绕第三轴转动连接，所述的第一底连杆的后部与所述的第二底连杆的前部绕第四轴转动连接，所述的支架锁定机构设置于所述的第一底连杆与所述的第二底连杆之间。
在某些又一进一步实施方式中，所述的支架锁定机构包括用于解锁的解锁按钮，当所述的推杆相对所述的推杆座向下滑动的过程中，所述的推杆能够按压所述的解锁按钮，使得所述的支架锁定机构解锁。
在某些又一进一步实施方式中，所述的换向锁定机构能够将所述的推杆架相对所述的基架锁定于第一工作位置与第二工作位置。
在某些又一进一步实施方式中，所述的推杆座、所述的前支架的上部与所述的后支架的上部绕所述的第一轴转动连接。
再进一步的，所述的换向锁定机构包括绕第五轴转动连接在所述的推杆座上的具有锁舌的锁件、开设在所述的前支架的上部与/或所述的后支架的上部的第一锁槽与第二锁槽，所述的推杆架具有第一工作位置与第二工作位置，当所述的推杆架处于第一工作位置下，锁舌插在所述的第一锁槽内，当所述的推杆架处于第二工作位置下，锁舌插在所述的第二锁槽内，所述的第五轴偏离所述的第一轴。
在某些实施方式中，所述的伸缩锁定机构能够将推杆相对推杆座至少在两个位置锁定，第一个位置为推杆基本位于推杆座的上部，第二个位置为推杆基本位于推杆座的下部。
在某些实施方式中，所述的伸缩锁定机构包括开设在所述的推杆座上的第一定位槽、开设在所述的推杆座上并位于所述的第一定位槽下方的第二定位槽、转动或滑动设置于所述的推杆的下部第一定位块、转动或滑动设置在所述的推杆的上部的第二定位块，当所述的推车车架处于展开位置下，所述的第一定位块插在所述的第一定位槽内，当所述的推车车架处于折叠位置下，所述的第二定位块插在握权这的第二定位槽内，所述的推杆上设置有用于控制所述的第一定位块与第二定位块活动的控制机构。
在某些进一步实施方式中，所述的第二定位槽的下侧具有能够与所述的第一定位块相抵触从而使之向下退出所述的第二定位槽的第一斜面，所述的第一定位块的上角部具有能够与第二定位槽的开口上部相抵触从而向上退出所述的第二定位槽的第二斜面，所述的第二定位块的下角部具有能够与所述的第一定位槽的开口下部相抵触从而向退出所述的第一定位槽的第三斜面。
在某些实施方式中，所述的前轮组件设置于所述的基架的底前部，所述的后轮组件设置于所述的基架的底后部。
以上所涉及到的前后上下等方位词，是在推车车架处于展开位置下作定义的，并且前轮组件所在的位置为前，后轮组件所在的位置为后。
本实用新型的范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的（但不限于）具有类似功能的技术特征进行互相替换而形成的技术方案等。
由于上述技术方案运用，本实用新型与现有技术相比具有下列优点：基架构成连杆机构能够实现单独折叠，在折叠过程中，推杆相对推杆座能够向下滑动，从而降低高度，折叠后体积较小。
附图说明
附图1为推车车架处于展开位置下的侧视图（推杆架处于第一工作位置下）；
附图2为推车车架处于展开位置下的侧视图（推杆架处于第三工作位置）；
附图3为推车车架处于展开位置下的侧视图（推杆架处于第二工作位置下）；
附图4为附图2的俯视图；
附图5为附图4的A-A放大剖面图；
附图6为附图4的B-B放大剖面图；
附图7为推车车架处于折叠位置下的侧视图；
附图8为图1的俯视图；
附图9为图8中C-C处的放大剖面图；
附图10为图8中D-D处的剖面图；
附图11为图3的俯视图；
其中：1、基架；2、推杆架；3、座位；4、前轮组件；5、后轮组件；
11、前支架；12、后支架；13、第一底连杆；14、第二底连杆；
21、推杆座；22、推杆；
31、前滑块；32、前转向件；33、前牵引索；
41、前轮接头；42、前轮；43、前轮转向轴；44、前轮定向滑块；45、前轮弹性件；
51、后轮接头；52、后轮；53、后轮转向轴；54、后轮定向滑块；55、后轮弹性件；
121、后滑块；122、后转向件；123、后牵引索；
56、第一收容槽；57、第一斜坡；58、第二收容槽；59、第二斜坡；
61、解锁按钮；
71、锁件；72、第一锁槽；73、第二锁槽；
81、第一定位块；82、第二定位块；83、第一定位槽；84、第二定位槽；
91、第一轴；92、第二轴；93、第三轴；94、第四轴；95、第五轴。
具体实施方式
如各附图所示，一种婴儿推车，包括具有展开位置与折叠位置的推车车架、座位3、前轮组件4、后轮组件5、用于将推车车架锁定于展开位置下的锁定机构。
推车车架包括能够折叠的基架1、推杆架2，推杆架2包括与基架1通过第一轴91转动连接的推杆座21、仅仅滑动地设置在推杆座21上的推杆22，锁定机构包括用于锁定基架1的支架锁定机构、设置于推杆座21与基架1之间的换向锁定机构、设置于推杆座21与推杆22之间的伸缩锁定机构。第一轴91位于推杆座21上。
前轮组件4设置于基架1的底前部，后轮组件5设置于基架1的底后部。
本实施例中，基架1包括：
前支架11，前轮组件4设置于前支架11的下部；
后支架12，前支架11的上部与后支架12的上部绕第一轴91转动连接，后轮组件5设置于后支架12的下部；
第一底连杆13，第一底连杆13的前部与前支架11绕第二轴92转动连接；
第二底连杆14，第二底连杆14的后部与后支架12绕第三轴93转动连接，第一底连杆13的后部与第二底连杆14的前部绕第四轴94转动连接，支架锁定机构设置于第一底连杆13与第二底连杆14之间。
前支架11、后支架12、第一底连杆13、与第二底连杆14构成四连杆机构，第一轴91、第二轴92、第三轴93与第四轴94四个转轴中只要锁住任意一个转轴，就能够将该四连杆机构锁定，构成稳定的三角形机构。
本实施例中，支架锁定机构设置于第一底连杆13与第二底连杆14之间，包括用于解锁的解锁按钮61，当推杆22相对推杆座21向下滑动的过程中，推杆22能够按压解锁按钮61，使得支架锁定机构解锁。解锁方便，便于基架折叠。至于支架锁定机构的具体结构不是本发明的要点，只要是能够将两个转动的部件锁定的结构在此都能够适用，如在第一底连杆13与第二底连杆14两个中的一个转动或滑动设置有具有弹性的解锁按钮61，而在两个中的另一个上开设有锁槽，锁定时，解锁按钮61插在锁槽内，当推杆22相对推杆座21向下滑时，正好可以触动解锁按钮61。
除此之外，无图示，基架1也可以采用其它结构，如省去第二底连杆14，第一底连杆13的前部与前支架11绕第二轴转动连接，第一底连杆13的后部与后支架12既能够沿着上下方向滑动也可以绕轴转动地设置。
前轮组件4包括前轮接头41、转动连接在前轮接头41上的前轮42，前轮接头41与前支架11之间绕前轮转向轴43转动连接，前轮接头41与前支架11之间设置有具有锁定位置与解锁位置的前轮定向机构，前轮定向机构包括使其稳定地处于锁定位置下的前轮弹性件45，前轮转向轴43沿着铅垂方向延伸。
后轮组件5包括后轮接头51、转动连接在后轮接头51上的后轮52，后轮接头51与后支架12之间绕后轮转向轴53转动连接，后轮接头51与后支架12之间设置有具有锁定位置与解锁位置的后轮定向机构，后轮定向机构包括使其稳定地处于锁定位置下的后轮弹性件55，后轮转向轴53沿着铅垂方向延伸。
基架1上设置有用于控制前轮定向机构解锁的前轮控制机构、以及用于控制后轮定向机构解锁的后轮控制机构，前轮控制机构包括前牵引索33，后轮控制机构包括后牵引索123。
推杆架2具有第一工作位置与第二工作位置，当推杆架2绕第一轴91转至第一工作位置时，推杆22自下至上向后倾斜，前牵引索33克服前轮弹性件45的弹性力被拖动，前轮定向机构处于解锁位置，后轮定向机构处于锁定位置，当推杆架2绕第一轴91转至第二工作位置时，推杆22自下至上向前倾斜，前轮定向机构处于锁定位置，后牵引索123克服后轮弹性件55的弹性力被拖动，后轮定向机构处于解锁位置。
推杆架2还具有第三工作位置，在第三工作位置，推杆基本沿着上下方向竖直地被保持，前牵引索33克服前轮弹性件45的弹性力被拖动，前轮定向机构处于解锁位置，后牵引索123克服后轮弹性件55的弹性力被拖动，后轮定向机构处于解锁位置。
前轮控制机构还包括滑动设置在基架1上的并位于第一轴91前侧的前滑块31、固定或转动设置在前支架11上的前转向件32，前牵引索33绕过前转向件32后其上部与前滑块31相连接，前牵引索33被向下拉时，前滑块31向上移动，反之，前滑块31向下移动时，前牵引索33向上拖动。推杆座21上开设第一收容槽56、设置于第一收容槽56的一侧开口部的第一斜坡57，当推杆架2绕第一轴91转至第二工作位置下，前滑块31插在第一收容槽56内，前滑块31靠近第一轴91，当推杆架2绕第一轴91转至第三工作位置或第一工作位置下，前滑块31与第一收容槽56在第一斜坡57的作用下相脱离，前滑块31与第一轴91相远离。其中，前滑块31滑动地设置在前支架11上。或者也可以采用另一种前轮控制机构，直接将前滑块31与前转向件32省去，前牵引索33的上部直接与推杆座21相连接。
如图6、图10及图12所示，同样的，后轮控制机构还包括滑动设置在所述基架1上的并位于第一轴91后侧的后滑块121、固定或转动设置在后支架12上的后转向件122，后牵引索123绕过后转向件122后其上部与后滑块121相连接，后牵引索123被向下拉时，后滑块121向上移动，反之，后滑块121向下移动时，后牵引索向上拖动。推杆座21上开设第二收容槽58、设置于第二收容槽58的一侧开口部的第二斜坡59，当推杆架2绕第一轴91转至第二工作位置或第三工作位置下，后滑块121与第二收容槽58在第二斜坡59的作用下相脱离，后滑块121与第一轴91相远离，当推杆架2绕第一轴91转至第一工作位置下，后滑块121沿着第二斜坡59重新插在第二收容槽58内，后滑块121与第一轴91相靠近。其中，后滑块121滑动设置在后支架12上。同样的，也可以采用另一种后轮控制机构，直接将后滑块121与后转向件122省去，后牵引索123的上部直接与推杆座21相连接。前轮定向机构包括滑动或转动设置在前支架11上的前轮定向滑块44，前轮弹性件45设置于前轮定向滑块44与前支架11之间，前牵引索33的下部与前轮定向滑块44相连接，后轮定向机构包括滑动或转动设置在后支架12上的后轮定向滑块54，后轮弹性件55设置于后轮定向滑块54与后支架12之间，后牵引索123的下部与后轮定向滑块54相连接。
换向锁定机构能够将推杆架2相对基架1锁定于第一工作位置与第二工作位置。推车车架能够实现正反向推车。本实施例中，推杆座21、前支架11的上部与后支架12的上部绕第一轴91转动连接。换向锁定机构包括绕第五轴95转动连接在推杆座21上的具有锁舌的锁件71、开设在前支架11的上部与/或后支架12的上部的第一锁槽72与第二锁槽73，推杆架2具有第一工作位置与第二工作位置，当推杆架2处于第一工作位置下，推杆架2向后倾斜，锁舌插在第一锁槽72内，当推杆架2处于第二工作位置下，推杆架2向前倾斜，锁舌插在第二锁槽73内，第五轴95偏离第一轴91。当基架1处于展开位置下，前轮支架11与后轮支架12呈固定状态，所以推杆架12与前轮支架11或后轮支架12锁定都可。推杆22上滑动设置有拨块，该拨块滑动时可以触动锁件71第五轴95转动。除此之外，无图示，锁件71也可以是滑动设置在推杆座21上的，通过滑动在第一锁槽72与第二锁槽73之间转换。
伸缩锁定机构能够将推杆22锁定于第一工作位置与第二工作位置，当推杆22处于第一工作位置下，推杆座21固定地位于推杆22的下部，当推杆22处于第二工作位置下，推杆座21固定地位于推杆22的上部。如附图2、附图7所示，将换向锁定机构解锁后，可以将推杆架2置于竖直位置，然后将伸缩锁定机构解锁，向下按动推杆22，推杆22可以使得支架锁定机构解锁，推车车架折叠。
本实施例中，伸缩锁定机构包括开设在推杆座21上的第一定位槽83、开设在推杆座21上并位于第一定位槽83下方的第二定位槽84、滑动设置于推杆22的下部第一定位块81、滑动设置在推杆22的上部的第二定位块82，当推车车架处于展开位置下，第一定位块81插在第一定位槽83内，当推车车架处于折叠位置下，第二定位块82插在握权这的第二定位槽84内，将推车车架锁定于折叠位置。推杆22上设置有用于控制第一定位块81与第二定位块82活动的控制机构，控制机构的具体结构不是本实用新型的要点，通常包括操作按钮、牵引索、复位弹性件等，在此不再赘述。第二定位槽84的下侧具有能够与第一定位块81相抵触从而使之向下退出第二定位槽84的第一斜面，第一定位块81的上角部具有能够与第二定位槽84的开口上部相抵触从而向上退出第二定位槽84的第二斜面，滑动推杆22时，第二定位槽84与第一定位块81不能够锁住，第二定位块82的下角部具有能够与第一定位槽83的开口下部相抵触从而向退出第一定位槽83的第三斜面，向下滑动推杆22时，第一定位槽83与第二定位块82也不能锁住。
如上所述，我们完全按照本实用新型的宗旨进行了说明，但本实用新型并非局限于上述实施例和实施方法。相关技术领域的从业者可在本实用新型的技术思想许可的范围内进行不同的变化及实施。

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1. 一种婴儿推车，包括具有可折叠的车架、设置于车架上的座位（3）、前轮组件（4）、后轮组件（5）、用于将所述的车架在展开状态下锁定的锁定机构，其特征在于：所述的车架包括推杆架（2）、能够折叠的基架（1），所述的推杆架（2）包括通过第一轴（91）与所述的基架（1）转动连接的推杆座（21）、仅仅可滑动地设置在所述的推杆座（21）上的推杆（22），所述的锁定机构包括用于锁定基架（1）的支架锁定机构、设置于所述的推杆架（2）和/或基架（1）上的用于相对锁定推杆架（2）与基架（1）的换向锁定机构、设置于所述的推杆座（21）和/或推杆（22）上的用于相对锁定推杆（22）和推杆座（21）的伸缩锁定机构。
2. 根据权利要求1所述的婴儿推车，其特征在于：基架（1）包括：
前支架（11），所述的前轮组件（4）设置于所述的前支架（11）的下部；
后支架（12），所述的前支架（11）的上部与所述的后支架（12）的上部通过第一轴（91）转动连接，所述的后轮组件（5）设置于所述的后支架（12）的下部。
3. 根据权利要求2所述的婴儿推车，其特征在于：
前轮组件（4）包括前轮接头（41）、转动连接在所述的前轮接头（41）上的前轮（42），所述的前轮接头（41）与所述的前支架（11）通过前轮转向轴（43）相转动连接，所述的前轮接头（41）与所述的前支架（11）之间设置有具有锁定位置与解锁位置的前轮定向机构，所述的前轮定向机构包括使其稳定地处于锁定位置下的前轮弹性件（45），所述的前轮转向轴（43）沿着铅垂方向延伸；
后轮组件（5）包括后轮接头（51）、转动连接在所述的后轮接头（51）上的后轮（52），所述的后轮接头（51）与所述的后支架（12）通过后轮转向轴（53）转动连接，所述的后轮接头（51）与所述的后支架（12）之间设置有具有锁定位置与解锁位置的后轮定向机构，所述的后轮定向机构包括使其稳定地处于锁定位置下的后轮弹性件（55），所述的后轮转向轴（53）沿着铅垂方向延伸；
基架（1）上设置有用于控制所述的前轮定向机构解锁的前轮控制机构、用于控制所述的后轮定向机构解锁的后轮控制机构，所述的前轮控制机构包括前牵引索（33），所述的后轮控制机构包括后牵引索（123），基架（1）与推杆架（2）之间设置有推杆定位机构，
推杆架（2）具有第一工作位置、第二工作位置及第三工作位置，在第一工作位置下，所述的推杆（22）自下至上向后倾斜，所述的前牵引索（33）克服所述的前轮弹性件（45）的弹性力被牵拉，所述的前轮定向机构处于解锁位置，所述的后轮定向机构处于锁定位置；在第二工作位置下，所述的推杆（22）自下至上向前倾斜，所述的前轮定向机构处于锁定位置，所述的后牵引索（123）克服所述的后轮弹性件（55）的弹性力被牵拉，所述的后轮定向机构处于解锁位置；在第三工作位置下，所述的推杆（22）基本保持在竖直方向，前牵引索（33）克服前轮弹性件（45）的弹性力被牵拉，所述的前轮定向机构处于解锁位置，所述的后牵引索（123）克服后轮弹性件（55）的弹性力被牵拉，所述的后轮定向机构处于解锁位置。
4. 根据权利要求3所述的婴儿推车，其特征在于：前轮控制机构还包括滑动设置在所述基架（1）上的位于所述的第一轴（91）前侧的前滑块（31）、固定或转动设置在所述的前支架（11）上的前转向件（32），所述的前牵引索（33）绕过所述的前转向件（32）后其上部与所述的前滑块（31）相连接，所述的推杆座（21）上开设第一收容槽（56）、设置于所述的第一收容槽（56）的一侧开口部的第一斜坡（57），当所述的推杆架（2）绕第一轴（91）转至第二工作位置下，所述的前滑块（31）插在所述的第一收容槽（56）内，所述的前滑块（31）靠近所述的第一轴（91），当所述的推杆架（2）绕第一轴（91）转至第三工作位置或第一工作位置下，所述的前滑块（31）与所述的第一收容槽（56）相脱离，所述的前滑块（31）与所述的第一轴（91）相远离。
5. 根据权利要求4所述的婴儿推车，其特征在于：所述的前滑块（31）可滑动地设置在所述的前支架（11）上。
6. 根据权利要求3所述的婴儿推车，其特征在于：所述的后轮控制机构还包括滑动设置在所述基架（1）上并位于所述的第一轴（91）后侧的后滑块（121）、固定或转动设置在所述的后支架（12）上的后转向件（122），所述的后牵引索（123）绕过后转向件（122）后其上部与所述的后滑块（121）相连接，所述的推杆座（21）上开设第二收容槽（58）、设置于所述的第二收容槽（58）的一侧开口部的第二斜坡（59），当所述的推杆架（5）绕第一轴（91）转至第二工作位置或第三工作位置下，所述的后滑块（121）与所述的第二收容槽（58）相脱离，所述的后滑块（121）与所述的第一轴（91）相远离，当所述的推杆架（5）绕第一轴（91）转至第一工作位置下，所述的后滑块（121）插在所述的第二收容槽（58）内，所述的后滑块（121）与所述的第一轴（91）相靠近。
7. 根据权利要求6所述的婴儿推车，其特征在于：所述的后滑块（121）可滑动地设置在所述的后支架（12）上。
8. 根据权利要求3所述的婴儿推车，其特征在于：前轮定向机构包括滑动或转动设置在前支架（11）上的前轮定向滑块（44），前轮弹性件（45）设置于前轮定向滑块（44）与前支架（11）之间，前牵引索（33）的下部与前轮定向滑块（44）相连接，后轮定向机构包括滑动或转动设置在后支架（12）上的后轮定向滑块（54），后轮弹性件（55）设置于所述的后轮定向滑块（54）与后支架（12）之间，后牵引索（123）的下部与后轮定向滑块（54）相连接。
9. 根据权利要求2所述的婴儿推车，其特征在于：所述的基架（1）还包括：
第一底连杆（13），所述的第一底连杆（13）的前部与前支架（11）通过第二轴（92）转动连接；
第二底连杆（14），所述的第二底连杆（14）的后部与后支架（12）通过第三轴（93）转动连接，所述的第一底连杆（13）的后部与所述的第二底连杆（14）的前部通过第四轴（94）转动连接，所述的支架锁定机构设置于所述的第一底连杆（13）与所述的第二底连杆（14）之间。
10. 根据权利要求1所述的婴儿推车，其特征在于：支架锁定机构包括用于解锁的解锁按钮（61），当推杆（22）相对所述的推杆座（21）向下滑动的过程中，推杆（22）能够按压所述的解锁按钮（61）以使得支架锁定机构解锁。
11. 根据权利要求3所述的婴儿推车，其特征在于：换向锁定机构包括通过第五轴（95）转动连接在推杆座（21）上的具有锁舌的锁件（71）、开设在前支架（11）的上部与/或后支架（12）的上部的第一锁槽（72）与第二锁槽（73），当推杆架（2）处于第一工作位置下，锁舌插在第一锁槽（72）内，当推杆架（2）处于第二工作位置下，锁舌插在所述的第二锁槽（73）内，第五轴（95）偏离第一轴（91），锁件（71）与所述的推杆座（21）之间设置有使得锁舌稳定地插在第一锁槽（72）或第二锁槽（73）内的锁件弹性件。
12. 根据权利要求1所述的婴儿推车，其特征在于：伸缩锁定机构包括开设在推杆座（21）上的第一定位槽（83）、开设在所述的推杆座（21）上并位于所述的第一定位槽（83）下方的第二定位槽（84）、转动或滑动设置于所述的推杆（22）的下部第一定位块（81）、转动或滑动设置在所述的推杆（22）的上部的第二定位块（82），当车架展开时，第一定位块（81）插在第一定位槽（83）内，当车架折叠时，第二定位块（82）插在第二定位槽（84）内，推杆（22）上设置有用于控制第一定位块（81）与第二定位块（82）活动的控制机构。
13. 根据权利要求12所述的婴儿推车，其特征在于：第二定位槽（84）的下侧具有能够与第一定位块（81）相抵触从而使之向下退出第二定位槽（84）的第一斜面，第一定位块（81）的上部具有能够与第二定位槽（84）的开口上部相抵触从而向上退出第二定位槽（84）的第二斜面，第二定位块（82）的下部具有能够与所述的第一定位槽（83）的开口下部相抵触从而向退出第一定位槽（83）的第三斜面。
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