The invention discloses an automatic labor-saving pedal mechanism of a bicycle. The mechanism comprises an installation sleeve, a main shaft and bearings. The installation sleeve is connected to an outer portion of the main shaft in a sleeving mode, sleeve frames are fixedly connected to two ends of the main shaft correspondingly, and the two sets of bearings are installed at the two ends of the installation sleeve correspondingly; extending frames are movably connected into the two sets of sleeve frames in a sleeved mode, and pedal plates are rotatably connected to outer sides of tail ends ofthe two sets of extending frames; the two sets of extending frames are fixedly connected with first connecting keys; outer walls of outer rings of the two sets of bearings are fixedly connected withsecond connecting keys; parallelogram telescopic arms are hinged between the two sets of the corresponding first connecting keys and the second connecting keys; and a third connecting key is positioned and connected between a middle hinging part of the parallelogram telescopic arms and an inner wall of a middle part of the sleeve frame. According to the mechanism, a power arm can be lengthened each time when a force is applied to a pedal by feet in a riding process so that a purpose of saving labor is achieved, and the mechanism is easy to apply and popularize.
本发明公开了一种自行车的自动省力脚踏机构,包括安装套筒、主轴和轴承,所述安装套筒套接于主轴的外部,所述主轴的两端均固定连接有套架,所述轴承设置有两组,分别安装于所述安装套筒的两端;两组所述套架内均活动套接有延伸架,两组所述延伸架的末端外侧均转动连接有脚踏板;两组所述延伸架上固定连接有第一连接键,两组所述轴承的外圈外壁均固定连接有第二连接键,两组对应的所述第一连接键和第二连接键之间均铰接有平行四边形伸缩臂,所述平行四边形伸缩臂的中部铰接处与套架的中部内壁定位连接有第三连接键,本发明能够在骑行过程中在每次脚向脚踏板施加力时,增长动力臂,从而达到省力的目的,易于推广应用。
Automatic labor-saving pedal mechanism of bicycle
一种自行车的自动省力脚踏机构
2020-09-15
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |