WO2016029785A1 - 一种折叠自行车车架 - Google Patents

一种折叠自行车车架 Download PDF

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Publication number
WO2016029785A1
WO2016029785A1 PCT/CN2015/086365 CN2015086365W WO2016029785A1 WO 2016029785 A1 WO2016029785 A1 WO 2016029785A1 CN 2015086365 W CN2015086365 W CN 2015086365W WO 2016029785 A1 WO2016029785 A1 WO 2016029785A1
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WO
WIPO (PCT)
Prior art keywords
tube
main beam
pipe
bicycle frame
fixedly connected
Prior art date
Application number
PCT/CN2015/086365
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English (en)
French (fr)
Inventor
韩德玮
李镜锋
Original Assignee
大行科技(深圳)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 大行科技(深圳)有限公司 filed Critical 大行科技(深圳)有限公司
Priority to JP2017511774A priority Critical patent/JP2017529274A/ja
Priority to EP15836346.5A priority patent/EP3187401B1/en
Priority to ES15836346T priority patent/ES2880345T3/es
Publication of WO2016029785A1 publication Critical patent/WO2016029785A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K15/00—Collapsible or foldable cycles
    • B62K15/006—Collapsible or foldable cycles the frame being foldable
    • B62K15/008—Collapsible or foldable cycles the frame being foldable foldable about 2 or more axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • 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

Definitions

  • the utility model relates to a bicycle frame, in particular to a folding bicycle frame.
  • the frame of the folding bicycle in which the rear triangle 5 is wound forward in the axial direction is mostly as shown in FIG.
  • the frame is also provided with a rear triangle 5 of the rear wheel 10 and an articulated connection of the lower end of the middle tube 1.
  • the rear triangle 5 is wound around the hinge axis.
  • the front roll is folded, and the front portion of the main beam tube 2 is folded sideways to complete the folding of the whole vehicle.
  • the rear wheel 10 is below the main beam tube 2 of the frame, and the type of the vehicle is light and the folding volume is small.
  • the main beam tube 2 of the frame is the most stressed part of the entire frame.
  • the riding belt In addition to bearing the collision force between the wheel and the ground, the riding belt also bears the weight of the load, especially in the complicated road section bumps or sudden drop in comparison.
  • the deep pits will deform or break the main beam tube 2.
  • the general method is to weld some reinforcing tubes 6 at the joint of the main beam tube 2 and the middle tube 1, but only strengthen the main beam tube 2 and the middle tube 1 The connection strength is not enhanced for the middle of the main beam tube 2.
  • the utility model aims to provide a folding bicycle frame with reasonable structure, stable folding structure and large protection strength of the main beam tube.
  • the utility model is realized as follows: a folding bicycle frame, comprising a middle tube, a main beam tube, and a rear triangle sleeved with a rear wheel, the middle tube side being hinged with the rear triangle, The other side of the middle pipe is connected with a lower pipe, the other end of the lower pipe is connected with the main beam pipe, the rear triangle is folded, and the rear wheel is sleeved to the lower pipe.
  • the middle tube includes a connecting portion, one end of the connecting portion is hingedly connected to the rear triangle, and the other side is fixedly connected to one end of the lower tube.
  • the middle portion of the main beam tube is arched, and both ends are bent downward; one end of the main beam tube is fixed to the middle tube The other end is fixedly connected to the head pipe; the lower pipe and the main beam pipe are fixedly connected to the arched portion in the direction of the head pipe.
  • the number of the lower tubes is two and is symmetric with each other between the main beam tubes, and the rear wheel is sleeved between the two lower tubes.
  • the tubular body of the lower tube has a square structure.
  • the rear triangle includes a triangular frame and a transverse plate that are symmetric with each other; the horizontal plate is integrally connected with the two triangular frames and hinged with the connecting portion.
  • the triangular frame comprises a flat tube, an upper tube and a riser; one end of the flat tube is fixedly connected to one end of the upper tube, and the other end is fixedly connected with one end of the riser; the other end of the riser is The other end of the tube is fixedly connected, and the two of the risers are fixedly connected to the horizontal plate, and the bottom ends of the two of the risers are hinged to the connecting portion
  • the utility model has the beneficial effects that: one end of the lower pipe is connected with the main beam pipe, and the other end is connected with one side of the middle pipe;
  • the lower and middle tubes and the main beam tube form a triangular structure with high strength and stable structure. Moreover, the connection between the lower tube and the main beam tube plays a reinforcing role, increasing the strength of the main beam tube and not easily breaking; the rear triangle is folded and the rear wheel is sleeved to the lower tube, so that the folded frame is stable and firm.
  • FIG. 1 is a schematic view showing the overall structure of a conventional folding bicycle frame
  • FIG. 2 is a schematic view showing the overall structure of a folding bicycle frame according to the present invention.
  • FIG. 3 is a schematic view showing the overall structure of a wheel of a folding bicycle frame equipped with wheels and folded;
  • FIG. 4 is a schematic view showing the overall structure of a folding bicycle frame equipped with wheels and front and rear wheels folded.
  • the folding bicycle frame includes a middle pipe 1, a main beam pipe 2, a lower pipe 3 and a rear triangle 5 which is sleeved with the rear wheel 10;
  • the middle pipe 1 includes a connecting portion 4
  • the connecting portion 4 is located at the lower end, and the connecting portion 4 is sleeved with a five-way pipe.
  • the rear triangle 5 includes a triangular frame and a transverse plate 51 which are symmetric with each other;
  • the triangular frame includes a flat tube 52, an upper tube 53 and a riser 54;
  • the flat tube 52-end is fixedly connected to the upper tube 53-end, and the other end is connected to the riser 54-
  • the other end of the riser 54 is fixedly connected with the other end of the upper tube 53 to form a triangular frame;
  • the horizontal plate 5 1 is fixedly connected with the two triangular frames to form a rear triangle 5, and the rear triangle 5 is at the rear of the frame.
  • the triangle shape is more stable, with high strength and good stability.
  • the bottom ends of the two risers 54 are hingedly connected to the connecting portion 4 so that the rear triangle 5 can be folded forward forward about the hinge.
  • the number of the lower tubes 3 is two, and may be other numbers as needed.
  • the central portion of the main beam tube 2 is arched, and both ends are bent downward; the 2 - end of the main beam tube is fixedly connected with the middle tube 1 , and the other end is fixedly connected with the head tube 9 .
  • One end of the connecting portion 4 is hinged to the rear triangle 5 , and the other end is fixedly connected to one end of the two lower tubes 3.
  • the other end of the two lower tubes 3 is fixedly connected to the main beam tube 2 by a third of the length of the main beam tube 2 in the direction of the head tube 9. Two, and symmetrical to each other, making it easy to nest the rear wheel 10.
  • the lower tube 3 and the middle tube 1 and the main beam tube 2 form a triangular structure with high strength and stable structure. Moreover, the lower tube 3 is fixedly connected to two-thirds of the length of the main beam tube 2 in the direction of the head tube 9, that is, two-thirds of the length of the main beam tube 2 and the lower tube 3 form a triangular structure, and the main beam tube is maximally strengthened. The strength of 2.
  • the main beam tube 2 is arched to facilitate the folding of the bicycle, and the rear wheel 10 is sleeved under the main beam tube 2 to reduce the folding volume.
  • the ends of the main beam tube 2 are bent downwards, so that the height of the head tube 9 is lowered, so that the front fork and the handlebar are folded, and the height is lower, which is advantageous for the folding height.
  • the two lower tubes 3 fixedly connected between the main beam tube 2 and the connecting portion 4 are symmetrical with each other, so that the strength of the main beam tube 2 can be strengthened, the frame is balanced and the life is long.
  • the rear triangle 5 is folded forward around the hinge axis, the front portion of the main beam tube 2 is folded laterally, and after the rear wheel 10 is folded forward, the rear wheel 10 is sleeved on the frame and the main beam tube 2
  • the lower two tubes 3 and the lower tubes 3 are sleeved to the rear wheel 10, so that the folded rear wheel 10 is stably positioned, and the frame is firmly positioned and stable after folding.
  • the tubular body of the main beam tube 2, the tubular body of the rear triangle 5, and the tubular body of the lower tube 3 have a square structure.
  • the square side of the square structure acts as a reinforcing rib, so the square structure increases the strength of the pipe body, and the pipe body that breaks the frame conventionally uses an elliptical pipe body or an elliptical pipe body and a circular pipe body.
  • the bicycle body strength reached the bicycle industry standard ⁇ , the volume of the square structure of the pipe body can be correspondingly reduced, the volume of the frame body can be correspondingly reduced, and the structure is reasonable.
  • the square structure of the pipe body is strong, therefore, the material requirements are not harsh Engraved, saving costs.
  • the square structure can be referred to as a tube body having a rhombic edge and a square tube body, or other polygons, a tube having a plurality of rhombic sides outside the tube body, or a tube having a combination of a polygon and a circular arc. body.

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

Abstract

一种折叠自行车车架，包括中管(1)，主梁管（2），套设有后车轮(10)的后三角（5），中管（1）一侧与后三角（5）铰接，中管（1）另一侧连接有下管（3），下管（3）另一端与主梁管（2）连接，后三角（5）折叠时，后车轮（10）套接于下管（3）。下管（3）和中管（1）以及主梁管（2）形成三角形结构，强度高，结构稳定。下管（3）与主梁管（2）连接起到加强的作用，增加主梁管（2）的强度，不易断裂；后三角（5）折叠时，后车轮套接于下管（3），使得折叠后的车架折叠定位的稳定，牢固。

Description

说明书 发明名称:一种折叠自行车车架
技术领域
[0001] 本实用新型涉及自行车车架， 特别涉及一折叠自行车车架。
背景技术
[0002] 在众多的折叠自行车中， 此类自行车在进行折叠吋， 后三角 5绕铰接轴向前卷 折的折叠自行车的车架大部分为如图 1所示。 车架除了在主梁管 2上设有折叠接 头外， 还在该车设有后车轮 10的后三角 5与中管 1的下端进行铰接连接； 在进行 折叠吋， 后三角 5绕铰接轴向前卷折， 主梁管 2的前部侧向折叠， 完成整车折叠 。 但是后车轮 10在向前折叠后， 后车轮 10在车架的主梁管 2的下方， 此类车型轻 盈， 折叠体积较小。 但是车架的主梁管 2是整个车架受力最大的部分， 在骑行吋 除了承受车轮与地面的碰撞力外， 还承受载重的重力， 特别是在复杂路段颠簸 或者是突然掉入比较深的凹坑吋， 会使得主梁管 2变形或者断裂， 一般的方法仅 仅是在主梁管 2和中管 1连接处焊接一些加强管 6， 但是只是加强主梁管 2与中管 1 的连接强度， 对主梁管 2的中部没有得到加强保护。
技术问题
[0003] 本实用新型旨在提供一种结构合理， 折叠结构稳定， 主梁管的保护强度大的折 叠自行车车架。
问题的解决方案
技术解决方案
[0004] 本实用新型是这样实现的： 一种折叠自行车车架， 包括中管， 主梁管， 套设有 后车轮的后三角， 所述中管一侧与所述后三角铰接， 所述中管另一侧连接有下 管， 所述下管另一端与所述主梁管连接， 所述后三角折叠吋， 所述后车轮套接 于所述下管。
[0005] 所述中管包括连接部， 所述连接部一端与所述后三角铰接连接， 另一侧与所述 下管的一端固定连接。
[0006] 所述主梁管中部呈拱起状， 且两端向下弯曲； 所述主梁管一端与所述中管固定 连接， 另一端与头管固定连接； 所述下管与所述主梁管固定连接于头管方向的 所述拱起状处。
[0007] 所述下管数目为两根且在所述主梁管间相互对称， 所述后车轮套设于两所述下 管间。
[0008] 所述下管的管体为方形结构。
[0009] 所述后三角包括相互对称的三角形构架和横板； 所述横板与两所述三角形构架 固定连接呈一体并与所述连接部铰接。
[0010] 所述三角形构架包括平管、 上管和立管； 所述平管一端与所述上管一端固定连 接， 另一端与所述立管一端固定连接； 所述立管另一端与所述上管另一端固定 连接， 两所述立管与所述横板固定连接， 两所述立管的底端与所述连接部铰接
发明的有益效果
有益效果
[0011] 本实用新型的有益效果是： 下管一端与主梁管连接， 另一端与中管的一侧连接
， 下管和中管以及主梁管形成三角形结构， 强度高， 结构稳定。 而且下管与主 梁管连接起到加强的作用， 增加主梁管的强度， 不易断裂； 后三角折叠吋， 后 车轮套接于下管， 使得折叠后的车架折叠定位的稳定， 牢固。
对附图的简要说明
附图说明
[0012] 图 1为现有的折叠自行车车架的整体结构示意图；
[0013] 图 2为本实用新型的折叠自行车车架的整体结构示意图；
[0014] 图 3为本实用新型的折叠自行车车架装设有车轮并折叠后车轮的整体结构示意 图；
[0015] 图 4为本实用新型的折叠自行车车架装设有车轮且前后车轮折叠的整体结构示 意图。
本发明的实施方式 [0016] 下面结合附图对本实用新型一种折叠自行车车架做进一步详细说明。
[0017] 请参考图 2至图 4所示， 折叠自行车车架， 包括中管 1， 主梁管 2， 下管 3和套设 有后车轮 10的后三角 5 ; 中管 1包括连接部 4， 连接部 4位于下端， 且连接部 4套设 有五通管。 后三角 5包括相互对称的三角形构架和横板 51 ; 三角形构架包括平管 52、 上管 53和立管 54; 平管 52—端与上管 53—端固定连接， 另一端与立管 54— 端固定连接； 立管 54另一端与上管 53另一端固定连接， 形成三角形构架； 横板 5 1与两三角形构架固定连接呈一体， 形成后三角 5， 后三角 5在车架后部， 呈三角 状更为稳定， 具有强度高， 稳定性好。 两立管 54的底端与连接部 4铰接连接， 使 得后三角 5能向前绕铰接处向前卷折。
[0018] 下管 3数目为两根， 依需要也可为其他数目。 主梁管 2中部呈拱起状， 且两端向 下弯曲； 主梁管 2—端与中管 1固定连接， 另一端与头管 9固定连接。 连接部 4一 端与后三角 5铰接， 另一端与两下管 3的一端固定连接， 两下管 3另一端与主梁管 2固定连接于头管 9方向的主梁管 2长度的三分之二处， 且相互对称， 使得易于套 接后车轮 10。 下管 3和中管 1以及主梁管 2形成三角形结构， 强度高， 结构稳定。 而且下管 3固定连接于头管 9方向的主梁管 2长度的三分之二处， 即主梁管 2长度 的三分之二与下管 3形成三角形结构， 最大限度的加强主梁管 2的强度。 主梁管 2 呈拱起状有利于自行车在折叠吋， 后车轮 10套接在主梁管 2的下面， 减小折叠体 积。 主梁管 2两端向下弯曲吋， 使得头管 9高度降低， 从而使得前叉和车把在折 叠吋， 高度更低， 有利于折叠高度。 主梁管 2和连接部 4间固定连接的两下管 3相 互对称， 使得能加强主梁管 2的受力强度， 车架平衡受力， 寿命长。 自行车在进 行折叠吋， 后三角 5绕铰接轴向前卷折， 主梁管 2的前部侧向折叠， 后车轮 10在 向前折叠后， 后车轮 10套接在车架和主梁管 2的下方的两下管 3间， 两下管 3套接 后车轮 10， 使得折叠后的后车轮 10定位稳定， 折叠后车架定位牢固， 稳定。
[0019] 主梁管 2的管体、 后三角 5的管体和下管 3的管体均为方形结构。 方形结构的方 形边起到加强筋的作用， 因此方形结构使得管体强度增大， 打破车架的管体常 规使用类似椭圆形管体或者椭圆形管体和圆形管体的做法。 在车架管体强度达 到自行车行业标准吋， 方形结构的管体体积可以相应的减小， 车架管体的体积 能够相应减小， 结构合理。 且方形结构的管体强度大， 因此， 对材料要求不苛 刻， 节约成本。 本实用新型中， 所称的方形结构可以使具有菱形边的管体和四 方形的管体， 或者其他多边形， 管体外部具有多变菱形边， 或者有多边形和圆 形弧线相结合的管体。
以上所述仅为本实用新型的较佳实施例而已， 并不用以限制本实用新型， 凡在 本实用新型的精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含 在本实用新型的保护范围之内。

Claims

权利要求书
[权利要求 1] 一种折叠自行车车架， 包括中管 （1) ， 主梁管 （2) ， 套设有后车轮
( 10) 的后三角 （5) ， 所述中管 （1) 一侧与所述后三角 （5) 铰接 ， 其特征在于， 所述中管 （1) 另一侧连接有下管 （3) ， 所述下管 （ 3) 另一端与所述主梁管 （2) 连接， 所述后三角 （5) 折叠吋， 所述 后车轮 （10) 套接于所述下管 （3) 。
[权利要求 2] 根据权利要求 1所述的折叠自行车车架， 其特征在于， 所述中管 （1) 包括连接部 （4) ， 所述连接部 （4) 一端与所述后三角 （5) 铰接连 接， 另一侧与所述下管 （3) 的一端固定连接。
[权利要求 3] 据权利要求 2所述的折叠自行车车架， 其特征在于， 所述主梁管 （2) 中部呈拱起状， 且两端向下弯曲； 所述主梁管 （2) —端与所述中管 ( 1) 固定连接， 另一端与头管 （9) 固定连接； 所述下管 （3) 与所 述主梁管 （2) 固定连接于头管 （9) 方向的所述拱起状处。
[权利要求 4] 据权利要求 3所述的折叠自行车车架， 其特征在于， 所述下管 （3) 数 目为两根且在所述主梁管 （2) 间相互对称， 所述后车轮 （10) 套设 于两所述下管 （3) 间。
[权利要求 5] 根据权利要求 4所述的折叠自行车车架， 其特征在于， 所述下管 （3) 的管体为方形结构。
[权利要求 6] 根据权利要求 4所述的折叠自行车车架， 其特征在于， 所述后三角 （5
) 包括相互对称的三角形构架和横板 （51) ； 所述横板 （51) 与两所 述三角形构架固定连接呈一体并与所述连接部 （4) 铰接。
[权利要求 7] 根据权利要求 6所述的折叠自行车车架， 其特征在于， 所述三角形构 架包括平管 （52) 、 上管 （53) 和立管 （54) ； 所述平管 （52) —端 与所述上管 （53) —端固定连接， 另一端与所述立管 （54) —端固定 连接； 所述立管 （54) 另一端与所述上管 （53) 另一端固定连接， 两 所述立管 （54) 与所述横板 （51) 固定连接， 两所述立管 （54) 的底 端与所述连接部 （4) 铰接。
PCT/CN2015/086365 2014-08-28 2015-08-07 一种折叠自行车车架 WO2016029785A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2017511774A JP2017529274A (ja) 2014-08-28 2015-08-07 折り畳み自転車のフレーム
EP15836346.5A EP3187401B1 (en) 2014-08-28 2015-08-07 Foldable bicycle frame
ES15836346T ES2880345T3 (es) 2014-08-28 2015-08-07 Cuadro de bicicleta plegable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2014205025388 2014-08-28
CN201420502538.8U CN204021144U (zh) 2014-08-28 2014-08-28 一种折叠自行车车架

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WO2016029785A1 true WO2016029785A1 (zh) 2016-03-03

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CN105151200A (zh) * 2015-10-15 2015-12-16 天津市明洲自行车有限公司 折叠减震自行车
CN106985947A (zh) * 2017-05-19 2017-07-28 杭州乐基科技有限公司 三棱锥体结构折叠自行车车架
CN109204652A (zh) * 2018-10-29 2019-01-15 蔡水文 一种折叠式电动车
CN112849322A (zh) * 2021-02-04 2021-05-28 捷安特（昆山）有限公司 改进型折叠车车架

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