WO2018028598A1 - 一种折叠车 - Google Patents

一种折叠车 Download PDF

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Publication number
WO2018028598A1
WO2018028598A1 PCT/CN2017/096615 CN2017096615W WO2018028598A1 WO 2018028598 A1 WO2018028598 A1 WO 2018028598A1 CN 2017096615 W CN2017096615 W CN 2017096615W WO 2018028598 A1 WO2018028598 A1 WO 2018028598A1
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WO
WIPO (PCT)
Prior art keywords
link
folding
chassis
hinged
linkage assembly
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Application number
PCT/CN2017/096615
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English (en)
French (fr)
Inventor
张健辉
蔡高佳
王刚
李湘驰
刘洪昌
Original Assignee
深圳市随行科技有限公司
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.)
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Publication date
Application filed by 深圳市随行科技有限公司 filed Critical 深圳市随行科技有限公司
Priority to US15/890,327 priority Critical patent/US10647377B2/en
Publication of WO2018028598A1 publication Critical patent/WO2018028598A1/zh

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    • 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
    • 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

Definitions

  • the present invention relates to the field of folding bicycles, and more particularly to a folding vehicle having a link folding mechanism.
  • Electric scooters have been developed for quite a long time and are a good means of transport for the elderly, those with limited mobility and those who need to travel short distances.
  • the two-wheeled scooter has the advantages of small size, light weight and simple structure, most of the two-wheeled scooters are standing and driving. Once the center of gravity is high, the emergency brakes are easy to roll over, and the people are not comfortable enough to stand. Not elegant enough.
  • the three-wheeled electric vehicle capable of stable driving at a low speed has been widely used, especially the folding electric tricycle, which has a compact structure, a small size, and is easy to carry, and is suitable for the needs of urban white-collar workers.
  • the folding step is usually cumbersome, and there is no linkage between the mechanism and the mechanism, which causes the folding to take multiple steps to complete the folding.
  • a motor vehicle disclosed in the application No. 201310113606.1 has no linkage mechanism between the front end, the front chassis and the rear chassis, so the user needs two steps to complete the unfolding or folding operation.
  • An object of the present invention is to provide a folding cart which can simplify the folding and unfolding steps and simplify the operation time by providing a link folding mechanism on the folding cart.
  • a folding cart comprising a front hinged front end, a front chassis and a rear chassis, the folding cart being provided with a link folding mechanism for folding or unfolding the folding cart, the link folding mechanism and the front end,
  • the front chassis and the rear chassis are hinged, and the link folding mechanism can drive the front, the front chassis and the rear chassis to perform relative folding to realize a corresponding folding or unfolding operation.
  • the link folding mechanism includes a first linkage assembly that respectively hinges the front end and the front chassis, and the first linkage assembly and the rear
  • the second linkage assembly hinged by the chassis can move the second linkage assembly by controlling the movement of the rear chassis, and the second linkage assembly can drive the movement of the first linkage assembly.
  • the first linkage assembly includes a first link and a second link that are hinged to each other, and the first link is away from one end of the second link and The front end is hinged, and an end of the second link away from the first link is hinged with the front chassis.
  • the second linkage assembly includes a third link hinged to each other And a fourth link, wherein an end of the third link away from the fourth link is hinged to a position of the second link close to the first link, and the fourth link is away from the third One end of the connecting rod is hinged to the rear chassis.
  • the rear chassis is provided with a hinge connector near one end of the front chassis, and the fourth link is hinged with the rear chassis through the hinge connector.
  • the front chassis is provided with a sliding mechanism slidable relative to the front chassis, and the third link and the fourth link pass through the same hinge shaft. Hinged with the sliding mechanism.
  • the front chassis is provided with a sliding slot
  • the sliding mechanism is a slider slidably disposed in the sliding slot.
  • a handle is disposed on the rear chassis and adjacent to the hinge position of the rear chassis and the front chassis, and the handle is hinged with the rear chassis.
  • a fixing fixing groove is disposed at two ends of the handle and located on a side close to the rear chassis, and a position corresponding to the unfolding fixing groove is set on the front chassis.
  • the link folding mechanism is two sets and symmetrically disposed on both sides of the folding vehicle.
  • the utility model has the beneficial effects that: by setting the link folding mechanism, in the process of folding and unfolding of the folding cart, the relative movement of all positions of the folding vehicle can be realized by one step control, thereby completing the folding, The operation is simple, the operation difficulty of the folding bicycle is greatly reduced, and the user experience of the folding bicycle is improved.
  • the pressure angle is exactly equal to 90° when the handle and the stopper are pressed against each other, and the front chassis and the rear chassis are locked at the dead position.
  • 1 is a schematic view showing the three-dimensional structure of the folding bicycle according to the embodiment.
  • Figure 2 is an enlarged view of the portion I in Figure 1.
  • Fig. 3 is a side elevational view showing the unfolded state of the folding bicycle according to the embodiment.
  • FIG. 4 is a side view showing the intermediate state of the folding process of the folding bicycle according to the embodiment.
  • Figure 5 is an enlarged view of II in Figure 4.
  • Fig. 6 is a side elevational view showing the folded state of the folding bicycle according to the embodiment.
  • Fig. 7 is a perspective view showing the three-dimensional structure of the folding vehicle according to the embodiment.
  • Figure 8 is an enlarged view of the portion III in Figure 7.
  • FIG. 9 is a schematic structural view of the link folding mechanism of the embodiment mounted in the folding vehicle.
  • Figure 10 is a partial enlarged view showing the connection position of the front chassis and the rear chassis according to the embodiment.
  • Fig. 11 is a schematic view showing the unfolded state of the link folding mechanism according to the embodiment.
  • Figure 12 is a schematic view showing the movement direction of the link folding mechanism of the embodiment (the direction of the arrow in the figure is the direction of movement of each link).
  • Figure 13 is a schematic view showing the folded state of the link folding mechanism of the embodiment.
  • first, second, third, and fourth are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first,” “second,” “third,” and “fourth” may include one or more of the features, either explicitly or implicitly.
  • the terms “set”, “connected”, and “fixed” are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral, unless otherwise specifically defined and defined. It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two elements or the interaction of two elements.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • a folding bicycle includes a front joint 100, a front chassis 200 and a rear chassis 300, which are provided with folding or unfolding.
  • a link folding mechanism of the folding cart the link folding mechanism is hinged with the front head 100, the front chassis 200, and the rear chassis 300, and the link folding mechanism can drive the front end 100, the The relative movement of the front chassis 200 and the rear chassis 300 effects a corresponding folding or unfolding operation.
  • the link folding mechanism includes a first linkage assembly that respectively hinges the front end 100 and the front chassis 200, and a second linkage assembly hinged with the first linkage assembly and the rear chassis 300, through the control station.
  • the movement of the rear chassis 300 can drive the movement of the second linkage assembly, and the second linkage assembly can drive the movement of the first linkage assembly.
  • the first linkage assembly controls the relative movement of the front head 100 and the front chassis 200 under the driving of the second linkage assembly, and when the second linkage assembly pulls the first chassis assembly 300 in the direction of the rear chassis 300 a linkage assembly, the front end 100 is rotated clockwise about the hinge axis of the front chassis 200 to reach a folded state of the folding vehicle, and when the second linkage assembly is pushed toward the front of the vehicle head 100 In the second linkage assembly, the front end 100 rotates counterclockwise about the hinge axis of the front chassis 200 to reach the unfolded state of the folding vehicle.
  • the first linkage component includes a first link 401 and a second link that are hinged to each other. 402. An end of the first link 401 away from the second link 402 is hinged with the front end 100, and an end of the second link 402 away from the first link 401 is hinged with the front chassis 200. .
  • the hinge position of the first link 401 and the front head 100 is located above the hinged position of the front head 100 and the front chassis 200, and the movement of the first link 401 pushes or pulls the front head 100 around the front end 100 rotates with the hinge shaft of the front chassis 200,
  • the second linkage assembly of the embodiment includes a third link 403 and a fourth link 404 that are hinged to each other, and an end of the third link 403 away from the fourth link 404 is hinged to the second connection.
  • the rod 402 is near the position of the first link 401, and the fourth link 404 is hinged from the rear chassis 300 away from one end of the third link 403.
  • the position of the second link 402 close to the first link 401 as described above means that the second link 402 is divided into two equal lengths along the length direction of the second link 402, close to the first A portion of the link 401 may be a position where the third link 403 is hinged to the second link 402.
  • Positioning the third link 403 and the second link 402 at a position where the second link 402 is close to the upper half of the first link 401 is for driving the second link 402 to move when the third link 403 moves
  • the force is more convenient, and the hinge position can form a triangular structure with the hinge position of the second link 402 and the front chassis 200 and the hinge position of the third link 403 and the fourth link 404 in a state in which the folding cart is deployed.
  • the second link 402 is more firmly supported.
  • a hinge connector 407 is disposed at an end of the rear chassis 300 adjacent to the front chassis 200, and the fourth link 404 is hinged to the rear chassis 300 through the hinge connector 407.
  • the purpose of providing the hinge connector 407 is to make the connection position of the fourth link 404 and the rear chassis 300 as close as possible to the hinge axis of the front chassis 200 and the rear chassis 300, so that the chassis 200 is relatively opposed before the control.
  • the rear chassis 300 can have enough rotating arms to drive the fourth link 404 to swing as much as possible, so as to integrally swing the link folding mechanism to control the folding and unfolding of the folding vehicle. .
  • the front chassis 200 is provided with a sliding mechanism slidable relative to the front chassis 200, and the third link 403 is The fourth link 404 is hinged to the sliding mechanism by the same hinge shaft.
  • the front chassis 200 is provided with a sliding slot 405, and the sliding mechanism is a slider 406 slidably disposed in the sliding slot 405.
  • the end of the third link 403 and the fourth link 404 which are hinged to each other during the unfolding or folding process is always slid in the sliding groove 405, and the accuracy of the movement trajectory of the link folding mechanism can be ensured, and the folding or unfolding action can be ensured.
  • the present embodiment is provided with a handle 410 on the rear chassis 300 and adjacent to the rear chassis 300 and the front chassis 200, the handle 410 and the rear chassis 300. Hinged.
  • the handle 410 is hinged to the rear chassis 300, but when the handle 410 is rotated relative to the rear chassis 300 to a certain angle, the handle 410 can drive the rear chassis 300 to rotate relative to the front chassis 200, and is disposed through
  • the hinge connector 407 on the rear chassis 300 drives the link folding mechanism to move.
  • the two sides of the handle 410 are disposed on a side of the rear chassis 300, and a deployment fixing slot 408 is disposed.
  • the front chassis 200 is provided with a stopper 409 at a position corresponding to the deployment fixing slot 408. In the state in which the folding cart is deployed, the stopper 409 abuts the handle 410 at the deployment fixing groove 408.
  • This embodiment is set by the exhibition When the fixing groove 408 and the stopper 409 are opened, the handle 410 and the stopper 409 are pressed against each other with a pressure angle just equal to 90°, and at this time, at the dead point position, the front chassis 200 and the rear chassis 300 are locked.
  • the link folding mechanism is two sets, and is symmetrically disposed on both sides of the folding vehicle.
  • the two sets of the link folding mechanism perform exactly the same synchronous action in the process of folding and unfolding of the folding vehicle, and the folding mechanism of the connecting rod is set to two groups to ensure the balance of the folding car during the folding and unfolding process, thereby Avoid the phenomenon of jamming caused by deformation of the connecting rod folding mechanism.
  • the folding cart In the folding operation, when the folding operation is required, the folding cart is first in an unfolded state, and at this time, the first link 401 and the second link 402 are in a dead position, and the operator can lift the handle 410 with one hand to drive the front chassis 200 and
  • the rear chassis 300 is relatively rotated (the rear chassis 300 is rotated clockwise with respect to the front chassis 200), the hinge link 407 disposed on the rear chassis 300 drives the fourth link 404 to swing, and the fourth link 404 drives the third link 403.
  • the end of the third link 403 and the second link 402 is pivoted to drive the second link 402 to rotate clockwise about the hinge axis of the front chassis 200, so that the first connection
  • the rod 401 and the second link 402 are separated from the dead center position, and the first link 401 drives the front end 100 to rotate in the clockwise direction toward the front chassis 200, and the handle 410 is continuously pulled until the entire vehicle is fully folded.
  • the operator holds the handle 410 in one hand, and the other hand controls the front 100 to rotate counterclockwise about the hinge axis of the front head 100 and the front chassis 200, and the handle 410 is pressed downward.
  • the front chassis 200 and the rear chassis 300 are on the same horizontal plane, and the first link 401 and the second link 402 are restored to the dead position, that is, the unfolding operation of the folding vehicle is completed, and after fully deploying, the handle 410 is continuously pressed, so that the fixing is performed.
  • the stopper 409 on the front chassis 200 cooperates with the deployment fixing groove 408 to press the handle 410 so that the front chassis 200 and the rear chassis 300 are relatively locked because the front chassis 200 and the rear chassis 300 are opposite to each other.
  • the pressure angle is exactly equal to 90°, which is at the dead point position, so the front chassis 200 and the rear chassis 300 are locked.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

一种折叠车，包括依次铰接的车头（100）、前底盘（200）、后底盘（300）和用于折叠或展开所述折叠车的连杆折叠机构，所述连杆折叠机构与所述车头（100）、所述前底盘（200）以及所述后底盘（300）铰接，所述连杆折叠机构可带动所述车头（100）、所述前底盘（200）以及所述后底盘（300）发生相对运动实现相应的折叠或展开操作；通过设置连杆折叠机构，在折叠车折叠以及展开的过程中通过连杆折叠机构的联动，只需要一步控制即可实现折叠车全部位置的相对运动，进而完成折叠、展开操作，操作简单，大幅度的降低了折叠车的操作难度，优化了折叠车的用户体验。

Description

一种折叠车
本申请基于申请号为201610652123.2、申请日为2016年8月10日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及折叠车技术领域，尤其涉及一种具有连杆折叠机构的折叠车。
背景技术
随着社会进步、城市的发展，生活在城市的年轻人，迫切需要一款短途代步工具，可以代替步行从地铁站或公交站到公司等目的地。电动代步车已经发展了相当长的时间，对于老人家、行动不便的人以及需要短途出行的人确实是一款不错的代步工具。虽然两轮代步车有着体积小、重量轻、结构简单等优点，但是大部分的两轮代步车都是站着行驶，一来重心高，紧急刹车容易翻车，而且人站着不够舒服，姿态也不够优雅。因此能够低速稳定行驶的三轮电动车得到了更广泛的应用，特别是折叠电动三轮车，折叠后结构紧凑、体积小、携带方便，适合城市白领的需求。现有的采用折叠机构的三轮代步车，通常折叠步骤繁琐，机构与机构之间没有联动，导致折叠需要多个步骤才能完成折叠。如申请号为201310113606.1所公开的一种机动车，其车头、前底盘、后底盘之间没有联动机构，所以用户操作起来需要两个步骤才能完成展开或折叠操作。
发明内容
本发明的一个目的在于：提供一种折叠车，通过在折叠车上设置连杆折叠机构，可以简化折叠、展开步骤，简化操作时间。
为达此目的，本发明采用以下技术方案：
提供一种折叠车，包括依次铰接的车头、前底盘以及后底盘，所述折叠车上设置有用于折叠或展开所述折叠车的连杆折叠机构，所述连杆折叠机构与所述车头、所述前底盘以及所述后底盘铰接，所述连杆折叠机构可带动所述车头、所述前底盘以及所述后底盘发生相对运动实现相应的折叠或展开操作。
作为所述的折叠车的一种优选的技术方案，所述连杆折叠机构包括两端分别铰接所述车头以及所述前底盘的第一联动组件、与所述第一联动组件以及所述后底盘铰接的第二联动组件，通过控制所述后底盘运动可带动所述第二联动组件运动，所述第二联动组件可带动所述第一联动组件运动。
作为所述的折叠车的一种优选的技术方案，所述第一联动组件包括相互铰接的第一连杆以及第二连杆，所述第一连杆远离所述第二连杆的一端与所述车头铰接，所述第二连杆远离所述第一连杆的一端与所述前底盘铰接。
作为所述的折叠车的一种优选的技术方案，所述第二联动组件包括相互铰接的第三连杆 以及第四连杆，所述第三连杆远离所述第四连杆的一端铰接于所述第二连杆靠近所述第一连杆的位置，所述第四连杆远离所述第三连杆的一端与所述后底盘铰接。
作为所述的折叠车的一种优选的技术方案，所述后底盘靠近所述前底盘的一端设置有铰链连接件，所述第四连杆通过所述铰链连接件与所述后底盘铰接。
作为所述的折叠车的一种优选的技术方案，所述前底盘上设置有可相对于所述前底盘滑动的滑动机构，所述第三连杆与所述第四连杆通过同一铰接轴与所述滑动机构铰接。
作为所述的折叠车的一种优选的技术方案，所述前底盘上设置有滑槽，所述滑动机构为所述滑槽中可滑动设置的滑块。
作为所述的折叠车的一种优选的技术方案，所述后底盘上并靠近所述后底盘与所述前底盘的铰接位置设置有把手，所述把手与所述后底盘铰接。
作为所述的折叠车的一种优选的技术方案，所述把手两端并位于靠近所述后底盘的一侧设置有展开固定槽，所述前底盘上与所述展开固定槽对应的位置设置有挡块，在所述折叠车展开的状态下，所述挡块于所述展开固定槽处与所述把手抵接。
作为所述的折叠车的一种优选的技术方案，所述连杆折叠机构为两组，且对称设置在所述折叠车的两侧。
本发明的有益效果为：通过设置连杆折叠机构，在折叠车折叠以及展开的过程中通过连杆折叠机构的联动，只需要一步控制即可实现折叠车全部位置的相对运动，进而完成折叠、展开操作，操作简单，大幅度的降低了折叠车的操作难度，改善了折叠车的用户体验。通过设置展开固定槽以及挡块，把手和挡块相互挤压时压力角刚好等于90°，处于死点位置将前底盘与后底盘锁死。
附图说明
下面根据附图和实施例对本发明作进一步详细说明。
图1为实施例所述折叠车立体结构示意图。
图2为图1中Ⅰ处放大图。
图3为实施例所述折叠车展开状态侧视示意图。
图4为实施例所述折叠车折叠过程中间状态侧视示意图。
图5为图4中Ⅱ处放大图。
图6为实施例所述折叠车折叠状态侧视示意图。
图7为实施例所述折叠车展开状态立体结构示意图。
图8为图7中Ⅲ处放大图。
图9为实施例所述连杆折叠机构安装于折叠车中的结构示意图。
图10为实施例所述前底盘与后底盘连接位置局部放大图。
图11为实施例所述连杆折叠机构展开状态原理图。
图12为实施例所述连杆折叠机构运动方向示意图(图中箭头方向为各连杆运动方向)。
图13为实施例所述连杆折叠机构折叠状态原理图。
图中：
100、车头；200、前底盘；300、后底盘；401、第一连杆；402、第二连杆；403、第三连杆；404、第四连杆；405、滑槽；406、滑块；407、铰链连接件；408、展开固定槽；409、挡块；410、把手。
具体实施方式
在本发明的描述中，需要理解的是，术语“外”、“内”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”、“第三”、“第四”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”“第三”、“第四”的特征可以明示或者隐含地包括一个或者更多个该特征。
在本发明的描述中，除非另有明确的规定和限定，术语“设置”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
如图1～13所示，于本实施例中，本发明所述的一种折叠车，包括依次铰接的车头100、前底盘200以及后底盘300，所述折叠车上设置有用于折叠或展开所述折叠车的连杆折叠机构，所述连杆折叠机构与所述车头100、所述前底盘200以及所述后底盘300铰接，所述连杆折叠机构可带动所述车头100、所述前底盘200以及所述后底盘300发生相对运动实现相应的折叠或展开操作。
通过设置连杆折叠机构，在折叠车折叠以及展开的过程中通过连杆折叠机构的联动，只需要一步控制即可实现折叠车全部位置的相对运动，进而完成折叠、展开操作，操作简单，大幅度的降低了折叠车的操作难度，优化了折叠车的用户体验。
所述连杆折叠机构包括两端分别铰接所述车头100以及所述前底盘200的第一联动组件、与所述第一联动组件以及所述后底盘300铰接的第二联动组件，通过控制所述后底盘300运动可带动所述第二联动组件运动，所述第二联动组件可带动所述第一联动组件运动。
所述第一联动组件在所述第二联动组件的带动下可控制所述车头100与所述前底盘200相对运动，当所述第二联动组件向所述后底盘300所在方向拉动所述第一联动组件，所述车头100相对于所述前底盘200绕两者的铰接轴做顺时针转动，达到折叠车的叠合状态，当所述第二联动组件向所述车头100所在方向推动所述第二联动组件，所述车头100相对于所述前底盘200绕两者的铰接轴做逆时针转动，达到折叠车的展开状态。
具体的，在本实施例中，所述第一联动组件包括相互铰接的第一连杆401以及第二连杆 402，所述第一连杆401远离所述第二连杆402的一端与所述车头100铰接，所述第二连杆402远离所述第一连杆401的一端与所述前底盘200铰接。
所述第一连杆401与所述车头100的铰接位置位于所述车头100与所述前底盘200相铰接位置的上方，第一连杆401的运动会推动或拉动所述车头100绕所述车头100与所述前底盘200的铰接轴转动，
本实施例所述的第二联动组件包括相互铰接的第三连杆403以及第四连杆404，所述第三连杆403远离所述第四连杆404的一端铰接于所述第二连杆402靠近所述第一连杆401的位置，所述第四连杆404远离所述第三连杆403的一端与所述后底盘300铰接。
如上所述的第二连杆402靠近第一连杆401的位置是指沿所述第二连杆402的长度方向将所述第二连杆402分成长度相等的两部分，靠近所述第一连杆401的一部分即可以成为所述第三连杆403与所述第二连杆402铰接的位置。
将第三连杆403与所述第二连杆402铰接的位置设置在第二连杆402靠近第一连杆401的上半部分是为了在第三连杆403带动第二连杆402运动时更便于受力，同时在折叠车展开的状态下该铰接位置能够和第二连杆402与前底盘200的铰接位置以及第三连杆403与第四连杆404的铰接位置三点形成三角形结构，给第二连杆402更为牢固的支撑。
所述后底盘300靠近所述前底盘200的一端设置有铰链连接件407，所述第四连杆404通过所述铰链连接件407与所述后底盘300铰接。设置铰链连接件407的目的在于使所述第四连杆404与所述后底盘300的连接位置尽量避开所述前底盘200与所述后底盘300的铰接轴，使得在控制前底盘200相对于后底盘300转动的过程中后底盘300能够有足够的转动臂带动第四连杆404进行尽可能大的摆动，以实现整体上带动连杆折叠机构进行摆动，从而控制折叠车的折叠与展开。
为了在展开以及折叠过程中控制第三连杆403的运动方向本实施例中在所述前底盘200上设置有可相对于所述前底盘200滑动的滑动机构，所述第三连杆403与所述第四连杆404通过同一铰接轴与所述滑动机构铰接。
优选的，所述前底盘200上设置有滑槽405，所述滑动机构为所述滑槽405中可滑动设置的滑块406。在展开或折叠的过程中第三连杆403与第四连杆404相互铰接的一端始终在滑槽405中滑动，能够保证连杆折叠机构的运动轨迹的准确性，确保实现折叠或展开动作。
为了方便对连杆折叠机构的控制，本实施例在所述后底盘300上并靠近所述后底盘300与所述前底盘200铰接位置设置有把手410，所述把手410与所述后底盘300铰接。把手410与后底盘300铰接，但是当所述把手410相对于所述后底盘300转动到一定角度时所述把手410可以带动所述后底盘300相对于所述前底盘200转动，并通过设置在所述后底盘300上的铰链连接件407带动连杆折叠机构运动。
优选的，所述把手410两端并位于靠近所述后底盘300的一侧设置有展开固定槽408，所述前底盘200上与所述展开固定槽408对应的位置设置有挡块409，在所述折叠车展开的状态下，所述挡块409于所述展开固定槽408处与所述把手410抵接。本实施例通过设置展 开固定槽408以及挡块409，把手410和挡块409相互挤压时压力角刚好等于90°，此时处于死点位置，将前底盘200与后底盘300锁死。
更进一步的，本实施例中所述连杆折叠机构为两组，且对称设置在所述折叠车的两侧。
两组所述连杆折叠机构在折叠车的折叠、展开的过程中进行完全相同的同步动作，将所述连杆折叠机构设置为两组可以保证折叠、展开过程中折叠车受力平衡，从而避免连杆折叠机构变形造成卡死的现象。
下面介绍本发明所述的折叠车的展开以及折叠的过程：
折叠操作，在需要进行折叠操作时折叠车首先处于展开状态，此时第一连杆401与第二连杆402处于死点位置，操作者可以用一只手提起把手410，带动前底盘200和后底盘300进行相对转动(后底盘300相对于前底盘200顺时针转动)，设置在后底盘300上的铰链连接件407带动第四连杆404摆动，第四连杆404带动第三连杆403与滑块406在滑槽405中移动，第三连杆403与第二连杆402铰接的一端发生摆动，带动第二连杆402绕其与前底盘200的铰接轴顺时针转动，使得第一连杆401与第二连杆402脱离死点位置，第一连杆401带动车头100沿顺时针方向向所述前底盘200方向转动，继续提拉把手410，至整车完全达到折叠状态。
展开操作，在如上所述的折叠状态下，操作者一手握住把手410、另一只手控制车头100绕车头100与前底盘200的铰接轴沿逆时针方向转动，顺势将把手410向下压，直至前底盘200与后底盘300位于同一水平面上，且第一连杆401与第二连杆402恢复至死点位置即完成折叠车的展开操作，完全展开后继续下压把手410，使得固定在前底盘200上的挡块409与展开固定槽408配合对所述把手410进行挤压，使得前底盘200与后底盘300相对锁紧，因为前底盘200和后底盘300是绕同一个铰链相对运动，当把手410和挡块409相互挤压的时候，压力角刚好等于90°，处于死点位置，所以前底盘200和后底盘300被锁死。
需要声明的是，上述具体实施方式仅仅为本发明的较佳实施例及所运用技术原理，在本发明所公开的技术范围内，任何熟悉本技术领域的技术人员所容易想到的变化或替换，都应涵盖在本发明的保护范围内。

Claims (10)

  1. 一种折叠车，其特征在于，包括依次铰接的车头、前底盘以及后底盘，所述折叠车上设置有用于折叠或展开所述折叠车的连杆折叠机构，所述连杆折叠机构与所述车头、所述前底盘以及所述后底盘铰接，所述连杆折叠机构可带动所述车头、所述前底盘以及所述后底盘发生相对运动实现相应的折叠或展开操作。
  2. 根据权利要求1所述的折叠车，其特征在于，所述连杆折叠机构包括两端分别铰接所述车头以及所述前底盘的第一联动组件、与所述第一联动组件以及所述后底盘铰接的第二联动组件，通过控制所述后底盘运动可带动所述第二联动组件运动，所述第二联动组件可带动所述第一联动组件运动。
  3. 根据权利要求2所述的折叠车，其特征在于，所述第一联动组件包括相互铰接的第一连杆以及第二连杆，所述第一连杆远离所述第二连杆的一端与所述车头铰接，所述第二连杆远离所述第一连杆的一端与所述前底盘铰接。
  4. 根据权利要求3所述的折叠车，其特征在于，所述第二联动组件包括相互铰接的第三连杆以及第四连杆，所述第三连杆远离所述第四连杆的一端铰接于所述第二连杆靠近所述第一连杆的位置，所述第四连杆远离所述第三连杆的一端与所述后底盘铰接。
  5. 根据权利要求4所述的折叠车，其特征在于，所述后底盘靠近所述前底盘的一端设置有铰链连接件，所述第四连杆通过所述铰链连接件与所述后底盘铰接。
  6. 根据权利要求5所述的折叠车，其特征在于，所述前底盘上设置有可相对于所述前底盘滑动的滑动机构，所述第三连杆与所述第四连杆通过同一铰接轴与所述滑动机构铰接。
  7. 根据权利要求6所述的折叠车，其特征在于，所述前底盘上设置有滑槽，所述滑动机构为所述滑槽中可滑动设置的滑块。
  8. 根据权利要求1至7中任一项所述的折叠车，其特征在于，所述后底盘上并靠近所述后底盘与所述前底盘的铰接位置设置有把手，所述把手与所述后底盘铰接。
  9. 根据权利要求8所述的折叠车，其特征在于，所述把手两端并位于靠近所述后底盘的一侧设置有展开固定槽，所述前底盘上与所述展开固定槽对应的位置设置有挡块，在所述折叠车展开的状态下，所述挡块于所述展开固定槽处与所述把手抵接。
  10. 根据权利要求1所述的折叠车，其特征在于，所述连杆折叠机构为两组，且对称设置在所述折叠车的两侧。
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