WO2015192634A1 - 儿童推车的座兜 - Google Patents

儿童推车的座兜 Download PDF

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Publication number
WO2015192634A1
WO2015192634A1 PCT/CN2014/095279 CN2014095279W WO2015192634A1 WO 2015192634 A1 WO2015192634 A1 WO 2015192634A1 CN 2014095279 W CN2014095279 W CN 2014095279W WO 2015192634 A1 WO2015192634 A1 WO 2015192634A1
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WO
WIPO (PCT)
Prior art keywords
seat
plate
guide
backboard
panel
Prior art date
Application number
PCT/CN2014/095279
Other languages
English (en)
French (fr)
Inventor
马福生
严卫军
Original Assignee
好孩子儿童用品有限公司
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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
Publication of WO2015192634A1 publication Critical patent/WO2015192634A1/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
    • 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

Definitions

  • the invention relates to a seat pocket for a stroller.
  • the seat pocket of the stroller can usually be placed in a lying position to facilitate the child to lie in use according to the needs of the child.
  • a seat pocket on a stroller disclosed in Chinese Patent No. CN201626463 which comprises a seat frame, a seat disposed on the frame of the seat pocket, and a soft backrest. The front end of the seat is movably connected to the support rods on both sides of the seat frame, through the seat. Adjust the angle between the backrest and the seat by turning and sliding relative to the support rod.
  • a disadvantage of the above structure is that when the seat is changed from the sitting position to the lying position, the seat angle is changed but the front and rear are not changed, the comfort in the lying position is poor, and the stability of the lying posture is poor when mounted on the cart.
  • an object of the present invention is to provide a seat pocket for a stroller that can have a sitting posture and a lying posture, and has high stability after being mounted on the cart.
  • the technical solution adopted by the present invention is:
  • a seat pocket for a stroller comprising a seat frame having a plurality of states and a locking mechanism for locking the seat frame in different states, the seat frame comprising two side armrests and sequentially contacting each other a seat panel, a guiding mechanism and a backboard, wherein the guiding mechanism is rotatable relative to the seat panel, and two side armrests are located on the left and right sides of the seat panel and each of the side armrests has an arc-shaped guiding slot.
  • the central angle of the guide groove is greater than 90 degrees, and a portion of the guide mechanism is inserted into the guide groove and slidable relative to the guide groove.
  • the left side portion and the right side portion of the seat panel are slidably coupled to the side armrests in the front-rear direction, respectively.
  • the surface of the backboard opposite the seat panel is generally in a first plane, and the surface of the seat panel opposite the backboard is generally in a second plane.
  • the plurality of states of the seat frame include a sitting posture and a lying posture state. When the seat frame is changed from the sitting posture to the lying posture state, the backboard driving guide mechanism slides along the guide groove to drive the seat panel to slide in the front-rear direction. The angle formed between the first plane and the second plane increases.
  • the guiding mechanism comprises a guiding plate and a connecting mechanism which are rotatably connected, the guiding plate is fixedly connected to the backboard, and the left side portion and the right side portion of the guiding plate are respectively inserted into the guiding groove and are guided by the guiding slot Guided sliding, the attachment mechanism is rotatably coupled to the seat panel and expandable/elongated and folded/contracted to cause the seat panel to slide in the fore and aft direction.
  • the connecting mechanism comprises two connecting plates respectively rotatably connected to the seat plate and the guiding plate, and the two connecting plates are rotatably connected.
  • the seat frame further has a folded state, when the seat frame is changed from the sitting state to the folded state, the two connecting plates are opposite to each other, and the seat plate slides backward along the sliding groove, the backrest The board is superposed on top of the seat board.
  • the rear portion of the seat board is located behind the back board.
  • the guide plate extends in an arc shape, the radius of curvature of the guide plate is equal to the radius of curvature of the guide groove, and the central angle of the guide plate is smaller than the central angle of the guide groove.
  • each side armrest defines a sliding slot extending in the front-rear direction, and the left side portion and the right side portion of the seat panel are slidably inserted into the sliding slot, respectively.
  • the left side portion and the right side portion of the seat plate are provided with a plurality of guiding columns arranged at intervals in the front-rear direction, the axis line of the guiding column extends in the left-right direction, and the guiding column is inserted
  • the inside of the chute and its circumferential surface are in contact with the groove wall of the chute.
  • the locking mechanism is disposed on the side armrest and/or the backboard for locking the side armrest and the backboard.
  • the seat frame further includes a back side portion respectively connected to left and right sides of the back board, and the back side portions are respectively rotatably connected to the side armrest.
  • the present invention adopts the above structure, and has the following advantages compared with the prior art: the angle of the backboard is adjusted, and the guiding mechanism is then slid along the curved guiding groove under the pushing thereof, so that the angle between the backboard and the seat panel can be adjusted to be The conversion between the sitting position and the lying position, and folding, the conversion is convenient and flexible; at the same time, the guiding mechanism can drive the seat board to slide forward, improving the comfort in the lying state, and having high stability when mounted on the cart. Sex.
  • FIG. 1 is a schematic structural view of a seat frame in a sitting state
  • Figure 2 is a schematic structural view of the seat frame in a lying position
  • Figure 3 is a schematic view showing the structure of the seat frame in a folded state
  • Figure 4 is a structural schematic view of the joint of the guide plate, the seat plate and the side armrest of the seat frame;
  • Figure 5 is a schematic structural view of a seat panel and a side armrest of a seat frame
  • FIG. 6 is a schematic structural view of a backboard, a guide plate, a connecting plate and a seat plate when the seat frame is in a folded state;
  • Figure 7 is a schematic view showing the structure of the connecting plate when the seat frame is in a folded state.
  • a seat pocket for a stroller includes a seat frame, a seat cover sleeve mounted on the seat frame, and a locking mechanism for locking the seat frame.
  • the seat frame has a lying state, a sitting state, and a folded state, and is shown in FIG. 1 as a sitting posture of the seat frame for the child to sit; and FIG. 2 shows the lying posture of the seat frame for the child to lie down.
  • the folded state of the seat frame is shown.
  • the seat frame is folded and stored to save storage space and facilitate transportation; the seat frame is realized by adjusting the angle of the backrest 1
  • the transition between the three states, when the backrest 1 is adjusted to the specified angle, is locked by the locking mechanism.
  • a locking mechanism is disposed on the side armrest 5 and/or the backboard 11 for locking the side armrest 5 and the backboard 11 of the backrest 1 , and the backrest 1 is further provided with an unlocking pin for controlling the locking mechanism.
  • the hand 12 adjusts the angle of the backboard 11 after unlocking the locking mechanism by unlocking the knob 12.
  • the backrest 1 of the seat frame further includes backrest side portions respectively connected to the left and right sides of the backboard panel 11, and the backrest side portions are rotatably coupled to the side armrests 5, respectively.
  • the front, back, left and right, and up and down as described in the present invention are defined according to the conventional viewing angle of the seat bag of the stroller, which is defined by the person skilled in the art, that is, the position in which the seat pocket is mounted on the stroller.
  • the seat frame includes two side armrests 5 and a seat plate 4, a guiding mechanism and a back board 11 which are sequentially connected, and the guiding mechanism includes a connecting mechanism and a guiding plate 2, the seat board A lower portion of the front end of the front portion 4 is provided with a footrest 7 , and an upper portion of the side armrest 5 is rotatably provided with an upper armrest 6 to which a visor 9 for supporting the awning is connected, and a rear end of the side armrest 5 is provided with a mounting seat 8 Used to mount the seat pocket on a stroller.
  • the connecting mechanism is rotatable relative to the seat panel 4 and the guide plate 2, the guide plate 2 is fixedly connected to the backboard 11 , and the side armrests 5 are located on the left and right sides of the seat panel 4 and both have an edge a sliding groove 51 extending in the front-rear direction and an arc-shaped guiding groove 52, the central angle of the guiding groove 52 is greater than 90 degrees, and the left side portion and the right side portion of the seat plate 4 are respectively inserted into the sliding groove 51
  • the left side portion and the right side portion of the guide plate 2 are respectively inserted into the guide groove 52 and slidable along the extending direction of the guide groove 52, and the plane of the back board 11 and the seat are
  • the plane in which the panel 4 is located constitutes an angle, and the guide mechanism of the backboard 11 slides along the guide groove 52 to drive the seat panel 4 in the front-rear direction.
  • the guide plate 2 slides along the guide groove 52, the angle increases and is less than or equal to 180 degrees, and the connecting mechanism rotates and elongates. Or unfolding to push the seat panel 4 to slide forward along the chute 51.
  • the central angle of the guiding groove 52 is greater than 180 degrees, and the seat frame further has a folded state.
  • the angle A is reduced and greater than or equal to 0 degrees.
  • the seat panel 4 slides rearward along the chute 51.
  • the guide plate 2 has an arc shape, the radius of curvature of the guide plate 2 is equal to the radius of curvature of the guide groove 52, and the central angle of the guide plate 2 is smaller than the guide groove.
  • the center angle of 52 The range of the angle between the plane in which the backboard 11 is located and the plane in which the seat panel 4 is located is determined by the angle at which the guide plate 2 rotates within the guide groove 52.
  • a plurality of guide posts 41 are arranged on the left side portion and the right side portion of the seat plate 4 at intervals in the front-rear direction, and the axis line of the guide post 41 extends in the left-right direction.
  • the guide post 41 is inserted into the sliding groove 51 and its circumferential surface is in contact with the groove wall of the sliding groove 51.
  • the sliding of the seat plate 4 in the sliding groove 51 is achieved by the cooperation of the guiding post 41 and the sliding groove 51.
  • the connecting mechanism comprises two connecting plates 3 which are rotatably connected, the connecting plate 3 can be relatively unidirectionally folded and unidirectionally unfolded, and the connecting plates 3 at the leading end and the trailing end are respectively rotated.
  • the connecting plate 3 Connected to the seat panel 4 and the guide plate 2, the connecting plate 3 is relatively unfolded when the seat frame is in the lying position.
  • the connecting plates 3 of the connecting mechanism are brought closer together, and the seat plate 4 is driven to slide rearward along the sliding slot 51.
  • the connecting plate 3 has a certain thickness and the edges are flush.
  • the upper end of the rear end of the connecting plate 3 at the head end and the upper end of the front end of the connecting plate 3 of the tail end are rotatably connected, so that the connecting plate 3 at the leading end can drive the connecting plate 3 of the tail end to rotate upward.
  • the opposite ends of the rear end of the connecting plate 3 at the head end and the lower portion of the front end of the connecting plate 3 at the trailing end can abut each other, so that the connecting plate 3 at the leading end can push the connecting plate 3 at the trailing end downward to be relatively unfolded.
  • the upper end of the front end of the connecting plate 3 is rotatably connected with a thin second folded edge 31, and the second folded edge 31 is disposed in the middle of the seat plate 4, when the seat frame is in the folded state and the sitting state,
  • the rear portion of the seat panel 4 is actually located at the rear of the back panel 11.
  • the upper end of the guide panel 2 is rotatably coupled to a thin first flange 21, and the first flange 21 is disposed to fit the lower portion of the back panel 11.
  • the amount of advancement is adjusted by the radius of the guide groove, and the angle A is increased, and the rear portion of the seat panel 4 is also slid to the front of the backboard 11, which realizes the elongation of the seat to a certain extent and improves the lying posture. Comfort and stability in the state.

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

Abstract

一种儿童推车的座兜，包括具有多个状态的座兜架以及用于将座兜架锁定在不同状态的锁定机构，座兜架包括两个侧扶手（5）以及依次相接的座位板（4）、导向机构以及靠背板（11），导向机构可相对座位板转动，侧扶手位于座位板的左右两侧且均开设有一弧形的导槽（52），导槽的圆心角大于90度，导向机构的部分插入所述导槽内并可滑动，座位板的左侧部和右侧部分别可沿前后方向滑动地连接于侧扶手，靠背板的对着座位板的表面大致处于一第一平面，座位板的对着靠背板的表面大致处于第二平面，座兜架的多个状态包括坐姿状态和躺姿状态，当座兜架由坐姿状态转换为躺姿状态时，靠背板带动导向机构沿导槽滑动以带动座位板沿前后方向滑动，第一平面与第二平面之间形成的夹角增大。

Description

儿童推车的座兜
技术领域
本发明涉及一种儿童推车的座兜。
背景技术
现有技术中，儿童推车的座兜通常可以转为躺姿状态，以方便在使用中根据儿童的使用需要供儿童躺卧。如中国专利CN201626463公开的一种童车上的座兜，它包括座兜框架、设置在座兜框架上的座位和软性靠背，座位前端部活动连接于座兜框架两侧的支撑杆上，通过座位相对支撑杆转动和滑动，调节靠背与座位之间的夹角。上述结构的缺点是当其由坐姿转换为躺姿时，座位角度改变但前后未变，躺姿时的舒适性差，且安装到推车上时，躺姿的稳定性差。
发明内容
针对上述问题，本发明的目的是提供一种儿童推车的座兜，其可具有坐姿状态和躺姿状态，且安装到推车上后稳定性高。
为解决上述技术问题，本发明采用的技术方案为：
一种儿童推车的座兜，包括具有多个状态的座兜架以及用于将所述座兜架锁定在不同状态的锁定机构，所述座兜架包括两个侧扶手以及依次相接的座位板、导向机构以及靠背板，所述导向机构可相对所述座位板转动，两个侧扶手位于所述座位板的左右两侧且各侧扶手上均开设有一弧形的导槽，所述导槽的圆心角大于90度，所述导向机构的部分插入所述导槽内并可相对导槽滑动。所述座位板的左侧部和右侧部分别可沿前后方向滑动地连接于侧扶手。靠背板的对着座位板的表面大致处于一第一平面，座位板的对着靠背板的表面大致处于第二平面。所述座兜架的多个状态包括坐姿状态和躺姿状态，当座兜架由坐姿状态转换为躺姿状态时，所述靠背板带动导向机构沿导槽滑动以带动座位板沿前后方向滑动，第一平面与第二平面之间构成的夹角增大。
优选地，所述导向机构包括相转动连接的导向板和连接机构，所述导向板固定连接于靠背板，所述导向板的左侧部和右侧部分别插入导槽内并以受导槽导向的方式滑动，所述连接机构转动地连接于座位板且可展开/伸长和折叠/收缩以带动座位板沿前后方向滑动。
更优选地，所述连接机构包括两个分别转动连接于座位板、导向板的连接板，两个所述的连接板相转动连接。
更进一步地，所述座兜架还具有折叠状态，当所述座兜架由坐姿状态转换为折叠状态时，两个连接板相向靠拢，所述座位板沿滑槽向后滑动，所述靠背板叠合于座位板的上方。
更进一步地，当座兜架处于折叠状态时，所述座位板的后部位于所述靠背板的后方。
更优选地，所述导向板呈弧形延伸，所述导向板的曲率半径与所述导槽的曲率半径相等，所述导向板的圆心角小于所述导槽的圆心角。
优选地，各侧扶手均开设有一沿前后方向延伸的滑槽，所述座位板的左侧部和右侧部分别可滑动地插设于滑槽内。
更优选地，所述座位板的左侧部和右侧部上均设置有多个沿前后方向间隔排列的导向柱，所述导向柱的轴心线沿左右方向延伸，所述导向柱插入所述滑槽内且其圆周面与所述滑槽的槽壁相接触。
优选地，所述锁定机构设置于所述侧扶手和/或靠背板上用于将侧扶手和靠背板锁定。
优选地，所述座兜架还包括分别连接于靠背板左右两侧的靠背侧部，所述靠背侧部分别转动地连接于所述侧扶手。
本发明采用以上结构，相比现有技术具有如下优点：调节靠背板角度，导向机构随之在其推动下沿弧形导槽滑动，从而可调节靠背板和座位板之间的角度使其在坐姿状态和躺姿状态之间转换，以及折叠，转换方便灵活；同时导向机构可带动座位板向前滑动，提高了躺姿状态时的舒适性，当安装到推车上时具有较高的稳定性。
附图说明
附图1为座兜架在坐姿状态时的结构示意图；
附图2为座兜架在躺姿状态时的结构示意图；
附图3为座兜架在折叠状态时的结构示意图；
附图4为座兜架的导向板、座位板及侧扶手连接处的结构示意图；
附图5为座兜架的座位板及侧扶手的结构示意图；
附图6为座兜架在折叠状态时的靠背板、导向板、连接板及座位板的结构示意图；
附图7为座兜架在折叠状态时的连接板的结构示意图。
以上附图中：1、靠背；11、靠背板；12、解锁捏手；2、导向板；21、第一折边；3、连接板；31、第二折边；4、座位板；41、导向柱；5、侧扶手；51、滑槽；52、导槽；6、上扶手；7、搁脚杆；8、安装座；9、篷杆。
具体实施方式
下面结合附图对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域的技术人员理解，从而对本发明的保护范围作出更为清楚明确的界定。
一种儿童推车的座兜，包括座兜架、安装于所述座兜架上的座兜布套以及用于将所述座兜架锁定的锁定机构。所述座兜架具有躺姿状态、坐姿状态以及折叠状态，结合图1所示为座兜架的坐姿状态供儿童坐着使用；结合图2所示为座兜架的躺姿状态供儿童躺着使用；结合图3所示为座兜架的折叠状态，当儿童推车不使用时，将座兜架折叠存放以节省存储空间并便于运输；通过调节靠背1的角度来实现座兜架在三个状态之间的转换，当靠背1调节到指定角度后，通过锁定机构将其锁定。具体地，锁定机构设置于所述侧扶手5和/或靠背板11上用于将侧扶手5和靠背1的靠背板11锁定，靠背1上还设置有一用于控制所述锁定机构的解锁捏手12，通过解锁捏手12解锁锁定机构后调节靠背板11角度。所述座兜架的靠背1还包括分别连接于靠背板11左右两侧的靠背侧部，所述靠背侧部分别转动地连接于所述侧扶手5。
本发明中述及的前后、左右及上下是根据本领域技术人员对儿童推车的座兜的惯常观察视角定义的，即座兜安装于儿童推车上后所处的方位来定义。
结合图1至图3所示，所述座兜架包括两个侧扶手5以及依次相接的座位板4、导向机构、靠背板11，导向机构包括连接机构和导向板2，所述座位板4的前端下部设置有搁脚板7，所述侧扶手5的上部转动地设置有上扶手6，靠背1上连接有用于支撑遮阳篷的篷杆9，侧扶手5的后端设置有安装座8用于将座兜安装于儿童推车上。述连接机构可相对所述座位板4和导向板2转动，所述导向板2与所述靠背板11固定连接，所述侧扶手5位于所述座位板4的左右两侧且均开设有一沿前后方向延伸的滑槽51和一弧形的导槽52，所述导槽52的圆心角大于90度，所述座位板4的左侧部和右侧部分别插入所述滑槽51内并可沿前后方向滑动，所述导向板2的左侧部和右侧部分别插入所述导槽52内并可沿导槽52的延伸方向滑动，所述靠背板11所在的平面与所述座位板4所在的平面构成一夹角，所述靠背板11导向机构沿导槽52以带动座位板4沿前后方向滑动。具体地，当所述座兜架由坐姿状态转换为躺姿状态时，所述导向板2沿导槽52滑动，所述夹角增大且小于等于180度，所述连接机构转动并伸长或展开以推动所述座位板4沿滑槽51向前滑动。所述导槽52的圆心角大于180度，所述座兜架还具有折叠状态，当所述座兜架由坐姿状态转换为折叠状态，所述夹角A减小且大于等于0度，所述座位板4沿滑槽51向后滑动。
结合图4和图6所示，所述导向板2呈弧形，所述导向板2的曲率半径与所述导槽52的曲率半径相等，所述导向板2的圆心角小于所述导槽52的圆心角。靠背板11所在的平面和座位板4所在的平面之间的夹角的大小范围由导向板2在导槽52内转动的角度确定。
结合图5所示，所述座位板4的左侧部和右侧部上均设置有多个沿前后方向间隔排列的导向柱41，所述导向柱41的轴心线沿左右方向延伸，所述导向柱41插入所述滑槽51内且其圆周面与所述滑槽51的槽壁相接触，通过导向柱41与滑槽51的配合实现座位板4在滑槽51内的滑动。
结合图6和图7所示，所述连接机构包括两个相转动连接的连接板3，所述连接板3可相对地单向折叠和单向展开，首端和尾端的连接板3分别转动连接于所述座位板4和导向板2，当所述座兜架在躺姿状态时，所述连接板3相对展开。当所述座兜架由坐姿状态转换为折叠状态时，所述连接机构的连接板3相向靠拢，带动所述座位板4沿滑槽51向后滑动。所述连接板3具有一定厚度且边缘平齐，首端的连接板3后端的上部和尾端的连接板3前端的上部相转动连接，所以首端的连接板3可带动尾端的连接板3向上转动以相向靠拢，首端的连接板3后端的下部和尾端的连接板3前端的下部的可相互抵接，所以首端的连接板3可推动尾端的连接板3向下转动以相对展开。此外，首端的连接板3的前端上部可转动地连接有一较薄的第二折边31，第二折边31与座位板4的中部贴合设置，当座兜架在折叠状态和坐姿状态时，座位板4的后部实际位于靠背板11的后方，导向板2的上端可转动地连接有一较薄的第一折边21，第一折边21与靠背板11的下部相贴合设置。
结合图1和图2所示，当座兜架由坐姿状态转换为躺姿状态时，通过靠背1上的解锁捏手12解锁靠背板11和侧扶手5的锁定，调节靠背板11的角度，导向板2随之在导槽52内沿其延伸方向向下滑动，继而带动尾端的连接板3向转动，从而使得两个连接板3展开，首端的连接板3推动座位板4在滑槽51内迁移，前移量通过导向槽的半径调整，夹角A增大的同时，座位板4的后部也滑动至靠背板11的前方，在一定程度上实现了座位的伸长，提高了躺姿状态时的舒适性以及稳定性。
结合图6和图7所示，当座兜架转换为折叠状态时，通过靠背1上的解锁捏手12解锁靠背板11和侧扶手5的锁定，调节靠背板11的角度，导向板2随之在导槽52内沿其延伸方向向上滑动，继而带动尾端的连接板3向上转动，从而使得两个连接板3相向靠拢，拉动座位板4沿滑槽51向后滑动，座位板4的后部缩回至靠背板11的后方，所述靠背板11叠合于座位板4的上方。由于导向板2与尾端连接板3之间、两个连接板3之间单向打折，有效避免座位板4被过度前拉伸长造成的折叠尺寸过大，这样整个座兜架折叠后的体积非常小、占用空间小。
上述实施例只为说明本发明的技术构思及特点，是一种优选的实施例，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明的精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (10)

1、一种儿童推车的座兜，包括具有多个状态的座兜架以及用于将所述座兜架锁定在不同状态的锁定机构，其特征在于：所述座兜架包括两个侧扶手以及依次相接的座位板、导向机构以及靠背板，所述导向机构可相对所述座位板转动，所述两个侧扶手位于所述座位板的左右两侧且各侧扶手上均开设有一弧形的导槽，所述导槽的圆心角大于90度，所述导向机构的部分插入所述导槽内并可沿导槽滑动，所述座位板的左侧部和右侧部分别可沿前后方向滑动地连接于侧扶手，所述靠背板的对着座位板的表面大致处于一第一平面，所述座位板的对着靠背板的表面大致处于第二平面，所述座兜架的多个状态包括坐姿状态和躺姿状态，当座兜架由坐姿状态转换为躺姿状态时，所述靠背板带动导向机构沿导槽滑动以带动座位板沿前后方向滑动，第一平面与第二平面之间构成的夹角增大。
2、根据权利要求1所述的座兜，其特征在于：所述导向机构包括相转动连接的导向板和连接机构，所述导向板固定连接于靠背板，所述导向板的左侧部和右侧部分别插入导槽内并可沿导槽滑动，所述连接机构转动地连接于座位板且可展开或伸长和折叠或收缩以带动座位板沿前后方向滑动。
3、根据权利要求2所述的座兜，其特征在于：所述连接机构包括两个分别转动连接于座位板、导向板的连接板，两个所述的连接板相转动连接。
4、根据权利要求3所述的座兜，其特征在于：所述座兜架还具有折叠状态，当所述座兜架由坐姿状态转换为折叠状态时，两个连接板相向靠拢，所述座位板沿滑槽向后滑动，所述靠背板叠合于座位板的上方。
5、根据权利要求4所述的座兜，其特征在于：当座兜架处于折叠状态时，所述座位板的后部位于所述靠背板的后方。
6、根据权利要求2所述的座兜，其特征在于：所述导向板呈弧形，所述导向板的曲率半径与所述导槽的曲率半径相等，所述导向板的圆心角小于所述导槽的圆心角。
7、根据权利要求1所述的座兜，其特征在于：各侧扶手上均开设有一沿前后方向延伸的滑槽，所述座位板的左侧部和右侧部分别可滑动地插设于滑槽内。
8、根据权利要求7所述的座兜，其特征在于：所述座位板的左侧部和右侧部上均设置有多个沿前后方向间隔排列的导向柱，所述导向柱的轴心线沿左右方向延伸，所述导向柱插入所述滑槽内且其圆周面与所述滑槽的槽壁相接触。
9、根据权利要求1所述的座兜，其特征在于：所述锁定机构设置于所述侧扶手和/或靠背板上用于将侧扶手和靠背板锁定。
10、根据权利要求1所述的座兜，其特征在于：所述座兜架还包括分别连接于靠背板左右两侧的靠背侧部，所述靠背侧部分别转动地连接于所述侧扶手。
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