CN85103089A - 自行车的伸缩曲柄机构 - Google Patents
自行车的伸缩曲柄机构 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M3/00—Construction of cranks operated by hand or foot
- B62M3/02—Construction of cranks operated by hand or foot of adjustable length
- B62M3/04—Construction of cranks operated by hand or foot of adjustable length automatically adjusting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2164—Cranks and pedals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2164—Cranks and pedals
- Y10T74/2167—Variable
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
- Mechanical Control Devices (AREA)
Abstract
一种位于车架上的、用于驱动自行车传动链条的伸缩曲柄机构。曲柄在作圆周运动的同时,产生一个径向伸缩运动。在同样大小作用力的作用下,由于采用伸缩曲柄机构,改变作用力臂,充分利用有用功,提高行驶速度20%。该机构用于驱动自行车传动链条的装置中,即省力又保护人体膝关节腔内半月板不受损伤。
Description
本发明属于无轨陆用车辆技术领域。
本发明之前,含有车架的用于驱动自行车传动链条的装置中有椭圆形链轮机构(FR965,383、FR2,295,867、FR2,315,427、GB1,156,529),有曲柄与椭圆形链轮短轴成10°夹角的机构(FR2,313,253),有摆线链轮机构(US4,181,034)。另外法国吉丹自行车和美国维克多自行车均采用了流线型外壳和低坐席靠背式半躺流线型自行车以提高车速。但这些用于驱动自行车传动链条的装置中都采用固定式的曲柄机构,驱动中只能靠腿用力或靠背力来加速。这种加速方法在增加用力时,对人体膝关节腔内半月板增大压力,使其易受损伤。为克服上述缺点,提高自行车速度,同时作到省力并保护人体膝关节腔内半月板不受损伤而发明了自行车的伸缩曲柄机构。
本发明的要点在于,采用了包含有一个装配在自行车中轴右侧上的、开有槽洞的、带有辅助支承机构的链轮,两个安装在自行车架上的导轮,一个装配在自行车中轴左侧上的、开有槽洞的、带有辅助支承机构的左法兰盘,两个装有脚踏的伸缩曲柄,两个连接伸缩曲柄与导轮的、分别穿过链轮槽洞与左法兰盘槽洞的销轴所组成的伸缩曲柄机构。使曲柄在作圆周运动的同时,产生一个径向伸缩运动。自行车在行驶中,左脚向前下踏脚踏时,曲柄由于导轮与销轴的作用以及导轮圆心与自行车中轴圆心的向前方偏心的作用,迫使曲柄向前伸出,从而使左脚踏相对于自行车中轴圆心的距离增大(即增加了作用力臂),充分利用了有用功。与此同时,带右脚踏的曲柄也由于导轮与销轴的作用以及导轮圆心与自行车中轴圆心的向前方偏心的作用,迫使其向内缩回,从而使右脚踏相对于自行车中轴圆心的距离减小。这样,在同样大小作用力的作用下,由于采用伸缩曲柄机构,改变作用力臂,充分利用有用功,而提高了自行车的速度。
图1、图2、图3表示自行车伸缩曲柄机构的结构。
链轮〔3〕包含有52-82个齿,链轮上开一个不越过链轮齿根端的槽洞〔1〕,链轮上带有辅助支承机构〔2〕。辅助支承机构为一对以上的槽形滑轮〔8〕用中心轴固定在链轮上。最好是采用52个齿,长方形槽洞,两对梯形槽滑轮作辅助支承机构的链轮。导轮〔4〕由一个内环〔9〕,一个外环〔10〕,以及内、外环之间的支承滚珠〔11〕所构成。内环或外环固定在车架上,并使其圆心与自行车中轴圆心向前方偏心50-80毫米。导轮的外环或内环上有一个以上的销孔,该销孔能插入销轴并允许销轴转动。最好采用内环固定在车架上,外环上有一个销孔。内环圆心与自行车中轴圆心向前方偏心50毫米。左法兰盘〔5〕上的槽洞及辅助支承机构与链轮上的相同。两个曲柄〔6〕上各有一个以上的螺纹销孔。螺纹销孔内带有内螺纹,用于固定销轴。曲柄与辅助支承机构的槽形滑轮相配合,曲柄两边的形状与槽形轮形状相对应。最好采用二个螺纹销孔,梯形边形状的曲柄。两个销轴〔7〕有一端插入导轮的外环或内环上的销孔,另一端有螺纹与曲柄上的螺纹销孔装配、固定。制作链轮、导轮、左法兰盘、曲柄、销轴的材料最好是金属材料。
本发明的伸缩曲柄机构,安装在自行车架上,链轮为52齿,飞轮为18齿,速比为2.83。比普通自行车省力,提高行驶速度20%。动力臂增长50毫米,充分利用有用功,在同样的作用力下,提高了自行车的行驶速度并保护人体膝关节腔内半月板不受损伤。
Claims (9)
1、一种含有车架的用于驱动自行车传动链条的装置,其特征在于所说的位于车架上、用于驱动自行车传动链条的装置包含有一个伸缩曲柄机构。
2、按照权利要求1所述的驱动自行车传动链条的装置,其特征在于所说的伸缩曲柄机构包含有一个装配在自行车中轴右侧上的、开有槽洞〔1〕的、带有辅助支承机构〔2〕的链轮〔3〕,两个安装在自行车架上的导轮〔4〕,一个装配在自行车中轴左侧上的、开有槽洞的、带有辅助支承机构的左法兰盘〔5〕,两个装有脚踏的伸缩曲柄〔6〕,两个连接伸缩曲柄与导轮的、分别穿过链轮槽洞与左法兰盘槽洞的销轴〔7〕所组成。
3、按照权利要求1、2所述的伸缩曲柄机构。其特征在于所说的链轮包含有52-82个齿,所说的链轮包含有一个不越过链轮齿根端的供销轴移动的槽洞,所说的链轮包含有由一对以上的、用中心轴固定在其上面的、可绕中心轴转动的槽形滑轮〔8〕所组成的辅助支承机构。其中以含有52个齿,合有长方形槽洞,含有两对梯形槽滑轮作辅助支承机构的链轮为最佳。
4、按照权利要求1、2所述的伸缩曲柄机构,其特征在于所说的导轮包含有一个内环〔9〕,一个外环〔10〕,以及内、外环之间的支承滚珠〔11〕。
5、按照权利要求1、2、4所述的伸缩曲柄机构,其特征在于所说导轮的外环或内环上包含有一个以上的、能插入销轴并允许销轴转动的销孔,所说导轮的内环或外环固定在车架上并使其圆心与自行车中轴圆心向前方偏心50-80毫米。其中以内环固定在车架上,外环含有一个销孔,内环圆心与自行车中轴圆心向前方偏心50毫米为最佳。
6、按照权利要求1、2所述的伸缩曲柄机构,其特征在于所说的左法兰盘包含有一个供销轴移动的槽洞,所说的左法兰盘包含有一对以上的、用中心轴固定在其上面的、可绕中心轴转动的槽形滑轮所组成的辅助支承机构。其中以含有长方形槽洞、含有两对梯形槽滑轮作辅助支承机构的左法兰盘为最佳。
7、按照权利要求1、2所述的伸缩曲柄机构,其特征在于所说的曲柄为包含有与槽形滑轮相配的槽形边的曲柄,所说的曲柄包含有一个以上的带内螺纹的、可固定销轴的螺纹销孔。其中以梯形边、含有二个螺纹销孔的曲柄为最佳。
8、按照权利要求1、2所述的伸缩曲柄机构,其特征在于所说的销轴为一端带有与螺纹销孔相配合的外螺纹的销轴。
9、按照权利要求2、3、4、6、7、8所述的伸缩曲柄机构,其特征在于所说的链轮、导轮、左法兰盘、曲柄、销轴是用金属材料制成的。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN85103089A CN85103089B (zh) | 1985-04-24 | 1985-04-24 | 脚踏曲柄可沿径向滑动的自行车驱动装置 |
US06/855,812 US4706516A (en) | 1985-04-24 | 1986-04-24 | Pedal mechanism for a bicycle having the pedal crank radially movable therein |
JP61095819A JPS61287890A (ja) | 1985-04-24 | 1986-04-24 | 自転車用ペダル機構 |
EP86303118A EP0199600A3 (en) | 1985-04-24 | 1986-04-24 | A pedal mechanism for a bicycle having the pedal crank radially movable thereon |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN85103089A CN85103089B (zh) | 1985-04-24 | 1985-04-24 | 脚踏曲柄可沿径向滑动的自行车驱动装置 |
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CN85103089B CN85103089B (zh) | 1986-02-10 |
CN85103089A true CN85103089A (zh) | 1986-02-10 |
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CN85103089A Expired CN85103089B (zh) | 1985-04-24 | 1985-04-24 | 脚踏曲柄可沿径向滑动的自行车驱动装置 |
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US (1) | US4706516A (zh) |
EP (1) | EP0199600A3 (zh) |
JP (1) | JPS61287890A (zh) |
CN (1) | CN85103089B (zh) |
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DE2722004A1 (de) * | 1977-05-14 | 1978-11-23 | Alfred Bidermann | Tretkurbelantrieb, insbesondere fuer ein fahrrad |
GB2050971A (en) * | 1979-05-31 | 1981-01-14 | Parry R S | Rotary crank assemblies |
US4281845A (en) * | 1979-07-05 | 1981-08-04 | Brown Lawrence G | Drive system for bicycles and other apparatus |
US4446754A (en) * | 1979-12-05 | 1984-05-08 | Chattin Jesse R | Pedal telescoping device |
BR8008938A (pt) * | 1979-12-05 | 1981-10-20 | J Chattin | Dispositivo telescopico para pedal |
FR2492936A1 (fr) * | 1980-10-24 | 1982-04-30 | Leroy Ernest | Dispositif de pedalier |
FR2498715A2 (fr) * | 1981-01-27 | 1982-07-30 | Leroy Ernest | Dispositif de pedalier |
FR2510218A1 (fr) * | 1981-07-24 | 1983-01-28 | Deloire Maurice | Dispositif de transmission a variateur de vitesse incorpore |
US4519271A (en) * | 1982-04-09 | 1985-05-28 | Jesse Chattin | Pedal telescoping device |
-
1985
- 1985-04-24 CN CN85103089A patent/CN85103089B/zh not_active Expired
-
1986
- 1986-04-24 EP EP86303118A patent/EP0199600A3/en not_active Withdrawn
- 1986-04-24 US US06/855,812 patent/US4706516A/en not_active Expired - Fee Related
- 1986-04-24 JP JP61095819A patent/JPS61287890A/ja active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107531312A (zh) * | 2014-12-12 | 2018-01-02 | 移动自行车有限公司 | 传动机构 |
CN107531312B (zh) * | 2014-12-12 | 2019-11-22 | 移动自行车有限公司 | 传动机构 |
CN107082100A (zh) * | 2016-02-12 | 2017-08-22 | 移动自行车有限公司 | 变速器 |
Also Published As
Publication number | Publication date |
---|---|
EP0199600A3 (en) | 1987-05-13 |
CN85103089B (zh) | 1986-02-10 |
EP0199600A2 (en) | 1986-10-29 |
JPS61287890A (ja) | 1986-12-18 |
US4706516A (en) | 1987-11-17 |
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