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Bicycle is a kind of portable and practical vehicle. But we always worry about the placement and the security of our bikes. This design is aim at solving this resonating problem. The bell of the bicycle is an innovation based on the traditional one. We can pull out a chain hidden in the bell, bypass the rim and lock it back in the bell. At the same time, the bell can automatically turn on the alarm when the lock is broken. The combination of the bell and the chain is not only convenient, but also bring people security.
Dalian Minzu University