The invention discloses an automatic overspeed prevention device of a bicycle for middle school students. The device comprises a pair of bicycle plates, an axle is rotatably connected between the pairof bicycle plates, a transmission ring is fixedly connected to the axle, wheels are fixedly connected to the transmission ring through a plurality of connecting shafts, and cavities are formed in thetwo connecting shafts. Sliding plugs are connected into the cavities in a sealed and sliding mode, the sliding plugs are elastically connected with the inner walls of the cavities through springs, annular cavities are formed in the vehicle plates, friction rings are arranged on the inner side walls of the annular cavities, and annular air bags extending into the annular cavities are fixedly connected to the side walls of the axles. The annular air bags are communicated with the cavities through pipelines, and a plurality of elastic abrasive discs matched with the friction rings are fixedly connected to the side walls of the annular air bags. The device is reasonable in structure, can automatically make a sound for early warning when the vehicle speed reaches an early warning line, and canalso automatically decelerate when the vehicle speed exceeds the early warning line.
本发明公开了一种中学生用自行车自动防过速装置,包括一对车板,一对所述车板之间转动连接有车轴,所述车轴上固定连接有传动环,所述传动环通过多根连接轴固定连接有车轮,两根所述连接轴上均设有空腔,所述空腔内密封滑动连接有滑塞,所述滑塞与空腔的内壁间通过弹簧弹性连接,一对所述车板内均设有环形腔,所述环形腔的内侧壁上设有摩擦环,所述车轴的侧壁上固定连接有延伸至环形腔内的环形气囊,所述环形气囊与空腔间通过管道连通,所述环形气囊的侧壁上固定连接有多个与摩擦环相配合的弹性磨片。本发明结构合理,其能够在车速达到预警线时自动发声进行预警,同时还能在车速超过预警线后自动进行减速。
Automatic overspeed prevention device of bicycle for middle school students
一种中学生用自行车自动防过速装置
2021-03-12
Patent
Electronic Resource
Chinese
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