Patent ID: 8342305

Claim:
An oil guiding device for hydraulic brake lever assembly having a brake lever comprising: a seat pivotally connected to the brake lever, the seat having an oil reservoir disposed thereon, the oil reservoir having an oil chamber defined therein adapted for storing hydraulic oil, an oil guiding base disposed in a bottom of the oil chamber, the oil guiding base having an oil inlet and an oil outlet defined therein; an oil guiding unit engaged with the oil guiding base, the oil guiding unit having a pipe disposed thereon and radially extending therethrough such that the pipe is oriented toward the brake lever, the oil guiding unit having an oil hole defined therein and located adjacent to the pipe; the pipe and the oil hole correspondingly and respectively communicated with the oil outlet and the oil inlet; and a cover panel engaging with the oil reservoir for sealing the oil chamber; wherein when the seat is downwardly inclinedly positioned relative to a bicycle handlebar, the hydraulic oil contained in the oil chamber gathered in a lower end thereof which is proximate to the brake lever, the pipe oriented toward the brake lever sucks up the hydraulic oil gathered in the lower end of the oil chamber and directly supplies the hydraulic oil for braking through the oil outlet such that no air enters into the oil outlet during operation; the returned hydraulic oil flows into the oil chamber through the oil inlet and the oil hole; thereby smooth braking operation is maintained as air is prevented from entering into the hydraulic oil during operation.