Bicycle brake lever
AssigneeShimano Inc.
InventorsShinichi Takizawa, Tatsuya Matsuchita
Life of this patent
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Abstract
An actuator unit for a hydraulic brake mechanism on two-wheelers, comprising a housing fastened to the handlebar, a brake cylinder being arranged substantially perpendicular to the handlebar in the housing, a piston movable in it and a brake lever acting on the piston at an intermediate portion remote from either end of the lever, the lever being mounted at one end thereof to rotate relative to the housing, wherein the brake lever is mounted adjustably movable with respect to an axis substantially at an end of the lever, the axis being unchangeable in position but rotatably mounted to the housing, the adjustment option being provided for by the adjustment mechanism, wherein the lever, the adjustment mechanism and the axis rotate together relatively to the housing upon operation.
Claims10
A brake lever assembly comprising:
- a housing, and
- a brake lever that includes
- a main body portion having a pivot end, a distal end, a top and a bottom, and
- a reach adjustment mechanism disposed adjacent the pivot end of the main body portion, the reach adjustment mechanism including:
- a top opening, a bottom opening, and an elongated opening defined in the main body portion, the elongated opening receiving a journal therein and including two parallel sides and two rounded ends, wherein the journal defines an axis and is rotatably mounted to the housing, and
- an adjustment bolt extending through the top opening, through the elongated opening, through a through hole defined in the journal, and through the bottom opening, wherein the adjustment bolt defines an axis, wherein the elongated opening defines a length in a direction parallel to and co-axial with the axis of the adjustment bolt and the first and second parallel sides, and wherein the journal has a diameter that is less than the length of the elongated opening, wherein when the adjustment bolt is rotated to adjust the reach, the journal rotates about its axis with respect to the housing, the main body portion of the brake lever translates with respect to the journal and the position of the adjustment bolt with respect to the main body portion remains unchanged in a direction parallel to the axis of the adjustment bolt.
Dependencies are inferred from the claim text.