| 摘要 |
A brake mechanism includes a brake arm having an orifice formed in the bottom and having a pin secured to the upper portion. A brake shoe is secured to the brake arm for brake the wheel. A block is fixed to the bicycle and has a tube engaged through the orifice such that the brake arm may be rotated relative to the tube. A support is secured to the tube, and a spring rod has a lower portion secured to the support and has an upper portion engaged with the pin for biasing the brake shoe away from the wheel. The spring rod may be easily assembled.
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