WO2012116534A1 - 童车 - Google Patents

童车 Download PDF

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Publication number
WO2012116534A1
WO2012116534A1 PCT/CN2011/077245 CN2011077245W WO2012116534A1 WO 2012116534 A1 WO2012116534 A1 WO 2012116534A1 CN 2011077245 W CN2011077245 W CN 2011077245W WO 2012116534 A1 WO2012116534 A1 WO 2012116534A1
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WO
WIPO (PCT)
Prior art keywords
pusher
brake
push rod
frame
brake mechanism
Prior art date
Application number
PCT/CN2011/077245
Other languages
English (en)
French (fr)
Inventor
胡杰
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
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 JP2013555725A priority Critical patent/JP5736060B2/ja
Publication of WO2012116534A1 publication Critical patent/WO2012116534A1/zh

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    • 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
    • B62B9/08—Braking mechanisms; Locking devices against movement
    • B62B9/085—Braking mechanisms; Locking devices against movement hand operated
    • 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
    • B62B9/206—Handle bars; Handles with two separate bars, i.e. not interconnected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/04—Braking mechanisms; Locking devices against movement
    • B62B5/0404—Braking mechanisms; Locking devices against movement automatic

Definitions

  • the invention relates to a stroller.
  • the baby carriage of the prior art includes a foldable frame, an elastic member, a seat mechanism disposed on the frame, a plurality of wheels disposed at a lower portion of the frame, and a brake mechanism disposed between the wheel and the frame, usually a vehicle
  • the frame comprises a push rod, a push handle provided on the push rod for holding the hand, and the operating member is usually rotated or slidably provided on the push rod or the push handle, and the operating member is connected with the brake mechanism through the traction cable, and is controlled by the operation.
  • the piece thus controls the brake mechanism to switch between a braking state and a release state.
  • the technical problem to be solved by the present invention is to provide a stroller with a brake mechanism that is easy to operate and has a quick brake.
  • a technical solution adopted by the present invention is: a baby carriage comprising a foldable frame, a seat mechanism disposed on the frame, a plurality of wheels disposed at a lower portion of the frame, and at least one a brake mechanism between the wheel and the frame having a brake state and a brake state
  • the frame includes a push rod, a push handle having a grip portion for holding the hand at the rear, a front end portion of the push handle and a rear end of the push rod
  • the part can be rotatably connected around an axis, and a traction cable is connected between the push handle and the brake mechanism.
  • the push rod controls the brake mechanism through the traction cable during the rotation of the push rod, and when the brake mechanism is in the brake state, the push handle In the first working position, when the brake mechanism is in the disengaged state, the pusher is located in the second working position, and the frame further comprises an elastic member for causing the pusher to enter the first working position, and the pusher is located at the first working position.
  • the highest point of the grip section of the position is higher than the highest point of the grip section when the pusher is located under the second working position.
  • the frame is symmetrical about a center plane, and the projection of the axis of the pusher relative to the push rod on the center plane is a straight line segment.
  • the distance between the center point of the grip section and the center plane when the pusher is in the first working position is farther than the distance between the center point of the grip section and the center plane when the pusher is in the second working position.
  • the front portion of the push handle has a slot into which the upper end of the push rod is rotatably inserted.
  • a limit mechanism that limits the angle of rotation of the pusher is provided between the push handle and the push rod.
  • the push handle is provided with a long slot, and the direction of the axis of the pusher relative to the push rod is aligned with the length direction of the long slot, and the extension of the pusher is provided with the length direction extending along the up and down direction and interpolating
  • the spiral groove is connected to the groove, and the upper end portion of the traction cable is connected with a sliding member, and the sliding member is inserted into the long groove and the spiral groove.
  • the push rod has a lumen in communication with the elongated slot, the portion of the slider and the traction cable being located within the lumen.
  • the push rod and the push rod respectively have two, and are respectively located on the left and right sides of the frame.
  • the grip portions of the two push handles are apart from each other when the brake mechanism is in the brake state.
  • the grip sections of the two pushers are close together.
  • the present invention has the following advantages compared with the prior art: a traction cable is connected between the push handle and the brake mechanism, and before the baby carriage is pushed, the user presses the push handle downward, and the pusher rotates relative to the push rod.
  • the pusher drives the traction cable so that the brake mechanism can be braked, and the baby carriage can travel.
  • the pusher automatically resets under the action of the elastic member, and the brake mechanism enters the braking state, and the baby carriage stops moving.
  • Safety is
  • Figure 1 is a cross-sectional view showing the structure of a connecting portion of a push handle and a push rod;
  • Figure 2 is a cross-sectional view of the push handle
  • Figure 3 is a schematic view of the structure of the pusher in the first working position (the brake mechanism is in the braking state);
  • Figure 4 is a schematic view of the structure of the pusher in the second working state (the brake mechanism is in the braking state);
  • Figure 5 is a perspective view of a first embodiment of the present invention.
  • Figure 6 is a side elevational view of a second embodiment of the present invention.
  • Figure 7 is a front elevational view of the stroller of Figure 6 when the brake mechanism is released;
  • Figure 8 is a front elevational view of the stroller of Figure 6 when braking
  • Figure 9 is a cross-sectional view of the push handle on the stroller shown in Figure 6;
  • Figure 10 is a partial schematic view of a brake mechanism
  • the main body of the baby carriage is a foldable frame 1, a seat mechanism (not numbered) provided on the frame 1, and four wheels 2 disposed on the lower portion of the frame 1, and are disposed on the wheel 2
  • the frame 1 includes a push rod 3 and a push handle 4, and a front end portion of the push handle 4 is rotatably coupled to a rear end portion of the push rod 3, and a rear portion of the push handle 4 has a grip portion 11 for holding by a hand.
  • the frame further includes a plurality of wheel brackets (not labeled), each wheel 2 is rotatably coupled to the corresponding wheel bracket by an axle extending in a horizontal direction, and the brake mechanism is generally disposed at the rear wheel 2 and the corresponding wheel bracket In between, the brake mechanism is coupled to the push rod 4 via the traction cable 7.
  • the push handle 4 and the push rod 3 respectively have two, and are located on the left and right sides of the frame 1. When the user pushes the baby carriage, the grips on the two push handles 4 can be respectively grasped by both hands. Paragraph is beneficial to the balance of hands.
  • the brake mechanism is not the main point of the invention, and there are many implementations thereof, so that the complete construction is not shown in the drawings.
  • Fig. 10 shows a brake block 13 for braking.
  • a plurality of brake holes can be formed in the wheel 2 to fit the brake block 13, and the plurality of brake holes are preferably evenly distributed on the circumference centered on the center of rotation of the wheel 2.
  • the brake block 13 shown in Fig. 10 has a brake pin 131, and the brake block 13 is connected to the lower end portion of the traction cable 7, and a compression spring 14 is disposed between the brake block 13 and the wheel bracket.
  • the brake mechanism can also adopt a brake device, such as a fixed axle and a hub on the wheel, and the brake mechanism includes a brake bar fixed at one end to the wheel bracket, and the other end of the brake bar is connected with the lower end of the traction cable, and the brake is applied. In the position, the brake bar is hung on the corresponding hub, and the brake bar is separated from the corresponding hub.
  • the brake device is a common device, so it is not described in detail with reference to the drawings.
  • the frame 1 can be a symmetrical structure about a center plane, and the projection of the axis 4 of the pusher 4 relative to the push rod 3 on the center plane is a straight line segment, that is, the rotation axis is preferably the best. Do not be perpendicular to the center plane.
  • the push rod 3 is made of a straight pipe member.
  • the rotation axis line preferably coincides with the length direction of the push rod 3.
  • the pusher 4 When the brake mechanism is in the braking state, the pusher 4 is in the first working position, as shown in FIG. 3; when the brake mechanism is in the disengaged position, the pusher 4 is in the second working position, as shown in FIG.
  • the mounting angle of the pusher 4 is preferably set such that the highest point of the grip section 11 when the pusher 4 is in the first working position is higher than the highest point of the grip section 11 when the pusher 4 is in the second working position, as shown in FIG. -4 is as shown.
  • An elastic member should be provided on the frame 1 for the pusher 4 to have a tendency to enter the first working position.
  • the elastic member may be disposed between the push handle 4 and the push rod 3, as will be described in the second embodiment, or may be disposed between the brake block 13 and the wheel bracket, that is, simply by the above
  • the compression spring 14 provides a restoring force, so that the brake mechanism recovers and is in a braking state without being subjected to an external force. At the same time, the compression spring 14 transmits the restoring force to the push handle 4 through the brake block 13 and the traction cable 7, so that the push handle 4 enter and remain in the first working position.
  • the grip portions 11 of the two push handles 4 need to be pressed down at the same time, so that the two brake mechanisms can be braked, and the baby carriage can be pushed, and the push handle 4 is pressed downward.
  • the grip sections 11 of the two pushers 4 are moved toward the inside of the frame 1, which further enhances the comfort of the push operation.
  • connection structure of the pusher 4 and the push rod 3 as shown in Fig. 1 - Fig. 2, the front part of the push handle 4 With the slot 5, the upper end of the push rod 3 is rotatably inserted into the slot 5 with itself as a rotating shaft.
  • the push rod 3 may have a slot 5, and the lower end portion of the push rod 4 may be rotatably inserted into the slot 5 by itself. This configuration is not shown, and may be configured according to the structure shown in FIG. Change implementation.
  • a stopper mechanism for restricting the rotation angle of the pusher 4 is provided between the pusher 4 and the push rod 3.
  • the limiting mechanism is not the main point of the invention, and is not described in detail with reference to the drawings.
  • the implementation is also simple, such as: having a first limiting portion on the push handle 4 and two second limiting portions on the push rod 3, The first limiting portion is restricted from rotating within a certain angular range by the two second limiting portions. When the first limiting portion and the second limiting portion collide, the pusher 4 cannot continue to rotate about the push rod 3.
  • the push handle 4 is provided with a long groove 8, and the direction of the rotation axis of the push handle 4 and the push rod 3 coincides with the longitudinal direction of the long groove 8, and the push handle 4 is opened with the length direction.
  • a spiral groove 9 extending in the up-and-down direction and communicating with the slot 5 is connected to the upper end portion of the traction cable 7 with a slider 6 inserted therein, and the slider 6 is inserted into the long groove 8 and the spiral groove 9.
  • the slider 6 slides simultaneously in the spiral groove 9 and the long groove 8, and the spiral groove 9 controls the position of the slider 6 in the long groove 8.
  • the traction cable 7 is pulled so that the brake mechanism switches between the braking state and the braking state.
  • the push rod 3 has a lumen 10 in communication with the elongated slot 8, and a portion of the slider 6 and the traction cable 7 are located within the lumen 10.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 6-9 reflect the second embodiment of the present invention.
  • the main difference between the second embodiment and the first embodiment is the number of brake mechanisms.
  • one brake mechanism is disposed between one of the wheels 2 and the frame 1.
  • the brake mechanism is connected to the pusher 4 through the traction cable 7, and the brake is controlled by rotating the pusher 4.
  • the state of the organization changes.
  • only one pusher 4 is arranged to be rotatably connected with the corresponding push rod 3, that is, the pusher 4 connected to the brake mechanism by the traction cable 7 can be rotated relative to the push rod 3 as shown in FIG. 7 and As shown in Fig.
  • a torsion spring 12 is provided between the pusher 4 and the push rod 3, through which the pusher 4 provides a restoring force, so that the pusher 4 returns and remains in the first position when it is not subjected to an external force. work location.
  • This method is also applicable to the first embodiment, that is, the pressure spring 14 described in the first embodiment is cancelled, and the brake mechanism is returned to the braking state only by the torsion spring 12, and the compression spring 14 and the twisting spring 14 are twisted.
  • the spring 12 coexists, so that the pusher 4 can be more reliably reset, and the brake mechanism can return to the brake state more reliably.

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

Description

童车
技术领域
本发明涉及一种儿童推车。
背景技术
现有技术中的童车，包括可折叠的车架、弹性件、设置于车架上的座位机构、设置在车架下部的多个车轮、设置于车轮与车架之间的刹车机构，通常车架包括推杆、设置于推杆上的供手握持的推把，通常在推杆或推把上转动或者滑动地设置有操作件，操作件与刹车机构通过牵引索相连接，通过控制操作件从而控制刹车机构在制动状态和释放状态之间转换。
发明内容
本发明要解决的技术问题是提供一种刹车机构易操作且刹车快速的童车。
为了解决上述技术问题，本发明采用的一种技术方案是：一种童车，包括可折叠的车架、设置于车架上的座位机构、设置在车架下部的多个车轮、设置于至少一个车轮与车架之间的具有刹车状态与解刹状态的刹车机构，车架包括推杆、后部具有供手握持的握把段的推把，推把的前端部与推杆的后端部可绕一轴线转动地相连接，在推把与刹车机构之间连接有牵引索，推把相对推杆转动的过程中通过牵引索控制刹车机构动作，当刹车机构处于刹车状态时，推把位于第一工作位置，当刹车机构处于解刹状态时，推把位于第二工作位置，车架还包括一弹性件，用于使得推把趋于进入第一工作位置，推把位于第一工作位置时其握把段的最高点高于推把位于第二工作位置下时握把段的最高点。
优选地，车架关于一中心平面左右相对称，推把相对推杆转动的轴线在该中心平面上的投影为一条直线段。
进一步地，推把位于第一工作位置时握把段的中心点与中心平面之间的距离比推把位于第二工作位置时握把段的中心点与中心平面之间的距离远。
在某些实施方式中，推把的前部具有插槽，推杆的上端部以自身为转轴能够转动地插在插槽内。
在某些实施方式中，推把与推杆之间设置有限制推把转动角度的限位机构。
在某些实施方式中，推把上开有长槽，推把相对推杆转动的轴心线方向与长槽的长度方向相一致，推把上开设有长度方向沿着上下方向延伸且与插槽相连通的螺旋槽，牵引索的上端部连接有滑动件，滑动件插在所述的长槽与螺旋槽内。
在某些进一步实施方式中，推杆上具有与长槽相连通的内腔，滑动件的部分与牵引索位于所述的内腔内。
在某些实施方式中，刹车机构有两个，分别设置于两个车轮与车架之间。
优选地，推杆与推把分别具有两个，并且分别位于车架的左右两侧，当刹车机构处于刹车状态时，两个推把的握把段相远离，当刹车机构处于解刹状态时，两个推把的握把段相靠近。
本发明的范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的（但不限于）具有类似功能的技术特征进行互相替换而形成的技术方案等。
由于上述技术方案运用，本发明与现有技术相比具有下列优点：推把与刹车机构之间连接有牵引索，在推行童车之前，使用者向下按压推把，推把相对推杆转动，推把带动牵引索使得刹车机构解刹，童车即可行进，当使用者双手离开推把时，推把在弹性件的作用下自动复位，刹车机构便进入刹车状态，童车即停止移动，使用较安全。
附图说明
附图1为推把与推杆连接部分的结构剖视图；
附图2为推把的剖视图；
附图3为推把在第一工作位置时的结构示意图（刹车机构处于刹车状态）；
附图4为推把在第二工作时的结构示意图（刹车机构处于解刹状态）；
附图5为根据本发明的实施例一的立体示意图；
附图6为根据本发明的实施例二的侧视示意图；
附图7为图6所示童车在刹车机构解刹时的前视图；
附图8为图6所示童车在刹车时的前视图；
附图9为图6所示童车上的推把的剖视图；
附图10为刹车机构的部分组件示意图；
其中：1、车架；2、车轮；3、推杆；4、推把；5、插槽；6、滑动件；7、牵引索；8、长槽；9、螺旋槽；10、内腔；11、握把段；12、扭簧；13、刹车块；131、刹车销；14、压簧。
具体实施方式
以下结合实施例对本发明的发明内容作进一步阐述。
实施例一
如附图5所示，该童车的主体为可折叠的车架1、设置于车架1上的座位机构（未标号）、设置在车架1下部的四个车轮2、设置于车轮2与车架1之间的刹车机构。车架1包括推杆3、推把4，推把4的前端部与推杆3的后端部相转动连接，推把4的后部具有供手握持的握把段11。
车架还包括多个轮支架（未标号），每个车轮2通过一沿着水平方向延伸的轮轴转动连接在相应的轮支架上，刹车机构一般设置于后部的车轮2与相应的轮支架之间，刹车机构通过牵引索7与推把4相连接。在优选的实施例中，推把4与推杆3分别具有两个，并且位于车架1的左右两侧，在使用者推行童车时，可以双手分别握住两个推把4上的握把段，有利于双手均衡用力。
图5所示的实施例中，刹车机构有两个，分别设置于两个车轮2与车架1之间，两个刹车机构分别通过牵引索7与推把4相连接，由推把4相对推杆3的转动来控制刹车机构的状态。图3-图4反映了图5所示实施例中的推把4的状态变化，两个推把4都跟推杆3相转动连接，两个刹车机构分别通过牵引索7连接至处于对应侧的推把4，在通过推把4操作刹车机构使之解刹时，两边的推把4都要相对推杆3转动，正如图4所示的那样。
刹车机构并不是本发明的发明要点，其实现方式也有很多种，故未采用附图来显示其完整的构造。
图10显示了一用来刹车的刹车块13，可以在车轮2上开设多个刹车孔来配合刹车块13，多个刹车孔最好均匀分布在以车轮2的转动中心为圆心的圆周上。图10所示的刹车块13上具有刹车销131，刹车块13与牵引索7的下端部相连接，在刹车块13与轮支架之间设置压簧14。当刹车机构位于刹车状态时，刹车销131插在其中一个刹车孔内，当刹车机构解刹时，刹车销131脱离刹车孔。
刹车机构还可以采用抱刹装置，如车轮上具有固定的轮轴、轮毂，抱刹机构包括一端部固定在轮支架上的刹车条，刹车条的另一端部与牵引索的下端部相连接，刹车位置下，刹车条抱紧在相应的轮毂上，解刹位置下，刹车条与相应的轮毂相脱离。抱刹装置为常用装置，故未采用附图详细描述。
车架1可以是关于一中心平面左右相对称的构造，推把4相对推杆3转动的轴心线在该中心平面上的投影为一条直线段，也就是说，该转动轴心线最好不要与中心平面相垂直。通常推杆3由直管件制成，一般地，转动轴心线最好与推杆3的长度方向相一致。
当刹车机构处于刹车状态时，推把4位于第一工作位置，如图3所示；当刹车机构位于解刹位置下，推把4位于第二工作位置，如图4所示。推把4的安装角度最好设置为：推把4位于第一工作位置时其握把段11的最高点高于推把4位于第二工作位置时握把段11的最高点，正如图3-4所示的那样。
另外，当刹车机构处于刹车状态时，两个握把段11相远离，如附图3所示；当刹车机构处于解刹状态时，两个握把段11相靠近，如图4所示。
车架1上应设置一弹性件，用于使得推把4具有进入第一工作位置的趋势。该弹性件可以设置于推把4与推杆3之间，如以下将要在实施例二中介绍的一样，也可以设置于上述刹车块13与轮支架之间，也就是说，单纯由上述的压簧14提供一复位力，使得刹车机构在不受外力的情况下回复并处于刹车状态，同时，压簧14还通过刹车块13和牵引索7将复位力传递给推把4，使推把4进入并保持在第一工作位置。
使用者欲推车时，为了操作方便，需要将两个推把4的握把段11同时向下压，使得两个刹车机构解刹，即可推行童车，而在向下压推把4的握把段11的过程中，两个推把4的握把段11都向车架1内侧移动，更增加了推行操作的舒适性。
为使车子的结构更紧凑、合理，也使整体外形更利落，可以对推把4和推杆3的连接结构作一些安排，如附图1-附图2所示，推把4的前部具有插槽5，推杆3的上端部以自身为转轴能够转动地插在插槽5内。也可以是推杆3上具有插槽5，推把4的下端部以自身为转轴能够转动地插在插槽5内，该构造未图示，可按照图1-图2所示的结构来变化实施。
无图示，推把4与推杆3之间设置有限制推把4转动角度的限位机构。限位机构不是本发明的发明要点，未采用附图详细描述，实现方式也很简单，如：在推把4上具有第一限位部，推杆3上具有两个第二限位部，通过两个第二限位部限制第一限位部在一定的角度范围内转动。当第一限位部与第二限位部相抵触时，推把4不能够绕推杆3继续转动。
如图1-图2所示，推把4上开有长槽8，推把4与推杆3的转动轴心线方向与长槽8的长度方向相一致，推把4上开设有长度方向沿着上下方向延伸且与插槽5相连通的螺旋槽9，牵引索7的上端部连接有滑动件6，滑动件6插在长槽8与螺旋槽9内。推把4在转动的过程中，滑动件6同时在螺旋槽9与长槽8内滑动，螺旋槽9控制滑动件6在长槽8内的位置。滑动的过程中，拉动牵引索7，使得刹车机构在刹车状态与解刹状态之间转换。
如附图1所示，推杆3上具有与长槽8相连通的内腔10，滑动件6的部分与牵引索7位于内腔10内。
实施例二：
图6-9反映了根据本发明的实施例二，实施例二与实施例一的主要区别在于刹车机构的个数。如图6-图8所示，刹车机构有一个，设置于其中一个车轮2与车架1之间，同样，刹车机构通过牵引索7与推把4相连接，通过转动推把4来控制刹车机构的状态变化。相应地，在本实施例中只安排一个推把4与相应的推杆3相转动连接，也就是通过牵引索7与刹车机构相连接的那个推把4能够相对推杆3转动如图7和图8所示，在刹车机构变换状态时，只有一个推把4在第一位置和第二位置之间转换，另一个推把则保持原状态不变。使用者欲推车时，会将其中一个推把4向下并向车架1内侧移动，使刹车机构解刹，此时，两个推把4的握把段11也会相互靠近至一个利于手握的位置。而为了能让使用者在推车前习惯性地下压其中一个推把4的握把段11，最好将另外一个推把的握把段设计为适于推行的形状和安装角度，就如图7-图8所示的那样，另一个推把与可转动的推把4处于第二位置时的状态基本相一致。
在图9显示了设置于推把4与推杆3之间的扭簧12，推把4通过该扭簧12来提供复位力，使得推把4在不受外力时回到并保持在第一工作位置。这种方式也适用于实施例一，即取消实施例一中描述的压簧14，仅通过扭簧12使推把4复位的同时，刹车机构也回复到刹车状态，或者，压簧14和扭簧12两者并存，以使推把4能更可靠的复位，刹车机构也能更可靠地回复到刹车状态。
如上所述，我们完全按照本发明的宗旨进行了说明，但本发明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发明的技术思想许可的范围内进行不同的变化及实施。

Claims (9)

1. 一种童车，包括可折叠的车架（1）、设置于所述的车架（1）上的座位机构、设置在车架（1）下部的多个车轮（2）、设置于至少一个车轮（2）与车架（1）之间的具有刹车状态与解刹状态的刹车机构，所述的车架（1）包括推杆（3）、后部具有供手握持的握把段（11）的推把（4），其特征在于：所述的推把（4）的前端部与所述的推杆（3）的后端部可绕一轴线转动地相连接，在所述的推把（4）与所述的刹车机构之间连接有牵引索（7），所述推把（4）相对推杆（3）转动的过程中通过牵引索控制刹车机构动作，当所述的刹车机构处于刹车状态时，推把（4）位于第一工作位置，当所述的刹车机构处于解刹状态时，所述的推把（4）位于第二工作位置，车架（1）还包括一弹性件，用于使得推把（4）趋于进入第一工作位置，推把位于第一工作位置时其握把段（11）的最高点高于推把位于第二工作位置下时握把段（11）的最高点。
2. 根据权利要求1所述的童车，其特征在于：所述的车架（1）关于一中心平面左右相对称，推把（4）相对推杆（3）转动的轴线在该中心平面上的投影为一条直线段。
3. 根据权利要求2所述的童车，其特征在于：推把（4）位于第一工作位置时握把段（11）的中心点与所述中心平面之间的距离比推把（4）位于第二工作位置时握把段（11）的中心点与所述中心平面之间的距离远。
4. 根据权利要求1所述的童车，其特征在于：所述的推把（4）的前部具有插槽（5），所述的推杆（3）的上端部以自身为转轴转动地插在所述的插槽（5）内。
5. 根据权利要求1所述的童车，其特征在于：所述的推把（4）与所述的推杆（3）之间设置有限制所述的推把（4）转动角度的限位机构。
6. 根据权利要求1所述的童车，其特征在于：所述的推把（4）上开有长槽（8），所述的推把（4）相对推杆（3）转动的轴心线方向与所述的长槽（8）的长度方向相一致，所述的推把（4）上开设有长度方向沿着上下方向延伸且与所述的插槽（5）相连通的螺旋槽（9），所述的牵引索（7）的上端部连接有滑动件（6），所述的滑动件（6）插在所述的长槽（8）与所述的螺旋槽（9）内。
7. 根据权利要求6所述的童车，其特征在于：所述的推杆（3）上具有与所述的长槽（8）相连通的内腔（10），所述的滑动件（6）的部分与所述的牵引索（7）位于所述的内腔（10）内。
8. 根据权利要求1-7之一所述的童车，其特征在于：刹车机构有两个，分别设置于两个车轮与车架之间。
9. 根据权利要求1-7之一所述的童车，其特征在于：推杆（3）与推把（4）分别具有两个，并且位于所述的车架（1）的左右两侧，当刹车机构处于刹车状态时，两个推把（4）的握把段（11）相远离，当刹车机构处于解刹状态时，两个推把（4）的握把段（11）相靠近。
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