Patent ID: 8944223
Filing Date: 2015-02-03
Classification: B62L

Abstract:
1. A hydraulic brake handle assembly, adapted to be mounted on a handlebar of a bicycle, comprising: a body, including a mounting portion to be mounted on the handlebar, a first oil chamber, an outlet in communication with the first oil chamber, a second oil chamber, a first passage in communication with the first and second oil chambers, a distribution chamber, a front distribution passage in communication with the second oil chamber and the distribution chamber, a rear distribution passage in communication with the second oil chamber and the distribution chamber, an oil reserve chamber, and a second passage in communication with the second oil chamber and the oil reserve chamber; a brake lever, pivoted to the body and including a pressing portion and a driving portion; a piston, including a driven portion driven by the driving portion, a first piston portion connected to the driven portion and movably disposed in the first oil chamber, and a second piston portion connected to the driven portion and movably disposed in the second oil chamber; and a first spring, disposed between the first oil chamber and the first piston portion and extending in a moving direction of the first piston portion; wherein when the piston is in a first position, the second piston portion only seals the second passage, when the piston is in a second position, the second piston portion only seals the rear distribution passage and the first piston portion seals the first passage, when the piston is in a third position, the first piston portion only seals the first passage.