WO2022242626A1 - 一种自行车车架的加强管 - Google Patents

一种自行车车架的加强管 Download PDF

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Publication number
WO2022242626A1
WO2022242626A1 PCT/CN2022/093248 CN2022093248W WO2022242626A1 WO 2022242626 A1 WO2022242626 A1 WO 2022242626A1 CN 2022093248 W CN2022093248 W CN 2022093248W WO 2022242626 A1 WO2022242626 A1 WO 2022242626A1
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WIPO (PCT)
Prior art keywords
tube
pipe body
section
pipe
sides
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PCT/CN2022/093248
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English (en)
French (fr)
Inventor
张艳业
韩德玮
莫怡平
Original Assignee
深圳市美大行科技有限公司
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Publication date
Application filed by 深圳市美大行科技有限公司 filed Critical 深圳市美大行科技有限公司
Publication of WO2022242626A1 publication Critical patent/WO2022242626A1/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
    • 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
    • B62K19/00—Cycle frames
    • B62K19/02—Cycle frames characterised by material or cross-section of frame members

Definitions

  • the utility model relates to the field of bicycle accessories, in particular to a reinforcing tube for a bicycle frame.
  • reinforcing pipes are usually connected between the main pipe of the vehicle frame and the bottom bracket to improve the rigidity and strength of the vehicle frame.
  • the structure of the reinforced tube currently used is generally a straight equal-diameter round tube or an arc-shaped equal-diameter round tube. Because the diameter of the round tube is the same, the compressive strength from all directions is the same, and the longitudinal rigidity of the bicycle frame and the transverse direction of the bottom bracket Rigidity improvement is still insufficient, and it is not suitable for tall and heavy people to ride.
  • the utility model provides a reinforcing tube with simple structure and high strength, which can greatly improve the rigidity of the bicycle frame.
  • the reinforcing pipe of the bicycle frame includes a pipe body obliquely fixed between the main pipe of the frame and the bottom bracket pipe, and the cross sections of the pipe sections at both ends of the pipe body are two circular arcs intersecting on both sides to form a flat shape.
  • the connecting lines of the intersection points on both sides of the circular arc of the pipe section section at both ends of the pipe body are perpendicular to each other.
  • the cross-sectional shape of the tube sections at both ends of the tube body is a flat shape in which two connected arc-shaped sides intersect and are perpendicular to each other.
  • the connection line of the edge intersection point is parallel to the main pipe of the frame, so that the longitudinal dimension of the connecting section between the pipe body and the main pipe of the frame is larger than the transverse dimension, which improves the longitudinal rigidity of the main pipe of the frame, and the two arc edges of the section of the other end of the pipe body intersect
  • the connecting line of the point is parallel to the bottom bracket tube, so that the longitudinal dimension of the end of the reinforcing tube at the connection between the tube body and the bottom bracket tube is smaller than the horizontal dimension, thereby increasing the horizontal connection area with the bottom bracket tube and effectively strengthening the lateral direction of the bicycle frame.
  • the utility model has simple structure and low processing cost.
  • Fig. 1 is a structural schematic diagram of a reinforcing tube of a bicycle frame.
  • Fig. 2 is a structural schematic view of a reinforcing tube of a bicycle frame installed on another frame.
  • Fig. 3 is a schematic diagram of the lateral structure of the reinforced pipe body.
  • Fig. 4 is a schematic diagram of the structure of the port of the reinforcing pipe body.
  • a reinforcing tube for a bicycle frame includes a tube body 3 fixed obliquely between the frame main pipe 1 and the bottom bracket tube 2, and the sections at both ends of the tube body intersect on both sides.
  • Two circular arcs in a flat shape with horizontal width and vertical narrowness are formed, and the lines connecting the intersection points on both sides of the circular arcs of the pipe sections at both ends of the pipe body are perpendicular to each other.
  • the cross-sectional shape of the pipe sections at both ends of the pipe body is a flat shape in which two connected arc-shaped edges intersect and are perpendicular to each other. Parallel, so that the longitudinal dimension of the connecting section between the pipe body and the main pipe of the frame is larger than the transverse dimension, which improves the longitudinal rigidity of the main pipe of the frame. , so that the longitudinal dimension of the end of the reinforcing tube at the joint between the pipe body and the bottom bracket is smaller than the transverse dimension, thereby increasing the transverse connection area with the bottom bracket and effectively enhancing the lateral rigidity of the bicycle frame.
  • the utility model has simple structure and low processing cost.
  • the pipe body is a straight-line reducer, or an arc-shaped reducer.
  • the cross-section of the connection between the upper end of the pipe body and the main pipe of the frame is two connected arc-shaped sides, and the connection of the two arc-shaped sides is two opposite sides.
  • the cross-section of the joint between the lower end of the pipe body and the five-way pipe is a flat ellipse, and the diagonals of the two sharp corners at the upper end of the pipe body are parallel to the short axis of the flat ellipse at the lower end of the pipe body.
  • the wall is uniformly reduced in diameter to the side wall at the lower end of the pipe body.
  • the shape of the tube body of the reinforcing tube is made smoother, and the overall aesthetic effect of the reinforcing tube is increased.

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

Abstract

一种自行车车架的加强管，包括斜跨固定在车架主管（1）和五通管（2）之间的管体（3），管体（3）两端的管段截面为在两侧相交形成扁平形状的两对称圆弧，管体（3）两端管段截面的对称圆弧两侧相交点的连线相互垂直。管体（3）的一端管段截面形状为两个相连接的对称弧形边形成扁平形状，与车架主管（1）连接时，两对称圆弧边相交点的连线与车架主管（1）平行，使得管体（3）与车架主管（1）连接截面的纵向尺寸大于横向尺寸，提升了车架主管（1）的纵向刚性，管体（3）的另一端口管段截面为椭圆，椭圆的长轴与五通管相平行，使管体（3）与五通管（2）连接处的加强管端部纵向尺寸小于横向尺寸，从而可增加与五通管（2）横向的连接面积，有效增强自行车车架的横向刚性。

Description

一种自行车车架的加强管 技术领域
本实用新型涉及自行车配件领域，特别是一种自行车车架的加强管。
背景技术
现有的折叠型自行车，通常会在车架的主管和五通管之间连接加强管以提升车架的刚性和强度。目前使用的加强管结构一般为直线等径圆管或者弧形等径圆管，因圆管直径相同，承受来自各方向的抗压强度相同，对自行车车架的纵向刚性和五通管的横向刚性提升仍嫌不足，其不适合身材高大、体重较重的人群骑行。
实用新型内容
本实用新型提供一种结构简单、强度大、能够较大幅提升自行车车架刚性的加强管。
本实用新型所述的自行车车架的加强管，包括斜跨固定在车架主管和五通管之间的管体，管体两端的管段截面为在两侧相交形成扁平形状的两圆弧，管体两端管段截面的圆弧两侧相交点的连线相互垂直。
所述的自行车车架的加强管，管体的两端管段截面形状为两个相连接的弧形边相交点连接互相垂直的扁平形状，与车架主管连接时，管体其中一端两圆弧边相交点的连线与车架主管平行，使得管体与车架主管连接截面的纵向尺寸大于横向尺寸，提升了车架主管的纵向刚性，管体的另一端管段截面的两圆弧边相交点的连线与五通管相平行，使管体与五通管连接处的加强管端部纵向尺寸小于横向尺寸，从而可增加与五通管横向的连接面积，有效增强自行车车架的横向刚性。本实用新型结构简单，加工成本低，通过将加强管的两端分别增强车架主管纵向刚性和五通管侧向刚性，不仅使车架整体的强度增大，还能提升骑行的舒适度，减少骑行者的能力损耗。
附图说明
图1为一种自行车车架的加强管结构示意图。
图2为一种自行车车架的加强管安装在另一种车架上的结构示意图。
图3为加强管管体侧向结构示意图。
图4为加强管管体端口方向结构示意图。
具体实施方式
如图1、图2所示，一种自行车车架的加强管，包括斜跨固定在车架主管1和五通管2之间的管体3，管体两端的管段截面为在两侧相交形成横宽竖窄的扁平形状的两圆弧，管 体两端管段截面的圆弧两侧相交点的连线相互垂直。
管体的两端管段截面形状为两个相连接的弧形边相交点连接互相垂直的扁平形状，与车架主管连接时，管体其中一端两圆弧边相交点的连线与车架主管平行，使得管体与车架主管连接截面的纵向尺寸大于横向尺寸，提升了车架主管的纵向刚性，管体的另一端管段截面的两圆弧边相交点的连线与五通管相平行，使管体与五通管连接处的加强管端部纵向尺寸小于横向尺寸，从而可增加与五通管横向的连接面积，有效增强自行车车架的横向刚性。本实用新型结构简单，加工成本低，通过将加强管的两端分别增强车架主管纵向刚性和五通管侧向刚性，不仅使车架整体的强度增大，还能提升骑行的舒适度，减少骑行者的能力损耗。
所述管体为直线变径管，也可为弧形变径管，管体上端与车架主管连接处截面为两个相连接的弧形边，所述两弧形边连接处为两相对的尖角；管体下端与五通管连接处截面为扁平的椭圆形，所述管体上端两尖角的对角线与管体下端扁平的椭圆形的短轴相平行，管体上端侧壁向管体下端侧壁均匀变径过渡。使得加强管管体的形状更加顺滑，增加加强管的整体美观效果。

Claims (3)

  1. 一种自行车车架的加强管，包括斜跨固定在车架主管(1)和五通管(2)之间的管体(3)，其特征在于，管体两端的管段截面为在两侧相交形成扁平形状的两圆弧，管体两端管段截面的圆弧两侧相交点的连线相互垂直。
  2. 根据权利要求1所述的加强管，其特征在于，所述管体为直线变径管，管体上端与车架主管连接处截面为两个相连接的弧形边，两所述弧形边连接处为两相对的尖角；管体下端与五通管连接处截面为扁平的椭圆形，所述管体上端两尖角的对角线与管体下端扁平的椭圆形的短轴相平行，管体上端侧壁向管体下端侧壁均匀变径过渡。
  3. 根据权利要求1所述的加强管，其特征在于，所述管体为弧形变径管，管体上端与车架主管连接处截面为两个相连接的弧形边，两所述弧形边连接处为两相对的尖角；管体下端与五通管连接处截面为扁平的椭圆形，所述管体上端两尖角的对角线与管体下端椭圆形状的短轴相平行，管体上端侧壁向管体下端侧壁均匀变径过渡。
PCT/CN2022/093248 2021-05-19 2022-05-17 一种自行车车架的加强管 WO2022242626A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN214875347U (zh) * 2021-05-19 2021-11-26 深圳市美大行科技有限公司 一种自行车车架的加强管

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221102A (en) * 1991-11-25 1993-06-22 Spangler David V Bicycle frame
DE19629740A1 (de) * 1996-07-23 1998-01-29 Peter Denk Leichtbauteil
JP2000185683A (ja) * 1998-10-16 2000-07-04 Honda Motor Co Ltd 車両用車体フレ―ムの構造及び製法
CN202783591U (zh) * 2012-07-19 2013-03-13 永祺(常州)车业有限公司 自行车车架
CN205396369U (zh) * 2016-02-04 2016-07-27 杭州乐基科技有限公司 一种折叠自行车车架
CN205499215U (zh) * 2016-04-13 2016-08-24 无锡市联合力动车业有限公司 女士电动车车架
CN214875347U (zh) * 2021-05-19 2021-11-26 深圳市美大行科技有限公司 一种自行车车架的加强管

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221102A (en) * 1991-11-25 1993-06-22 Spangler David V Bicycle frame
DE19629740A1 (de) * 1996-07-23 1998-01-29 Peter Denk Leichtbauteil
JP2000185683A (ja) * 1998-10-16 2000-07-04 Honda Motor Co Ltd 車両用車体フレ―ムの構造及び製法
CN202783591U (zh) * 2012-07-19 2013-03-13 永祺(常州)车业有限公司 自行车车架
CN205396369U (zh) * 2016-02-04 2016-07-27 杭州乐基科技有限公司 一种折叠自行车车架
CN205499215U (zh) * 2016-04-13 2016-08-24 无锡市联合力动车业有限公司 女士电动车车架
CN214875347U (zh) * 2021-05-19 2021-11-26 深圳市美大行科技有限公司 一种自行车车架的加强管

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