| 摘要 |
Disclosed is a master cylinder for a vehicle brake. The master cylinder includes a cylinder body provided with a hollow bore, a primary piston configured to perform a reciprocating motion in the hollow bore in linkage with a pedal, a secondary piston configured to move in linkage with the motion of the primary piston, and a Brake Light Stop (BLS) sensor module comprising a magnet provided at the primary piston and provided in a ring shape, and a hall sensor installed at an outer side of the cylinder body to correspond to the magnet and configured to control on/off operations of a brake lamp by sensing a magnetic flux density according to the reciprocating motion of the primary piston, wherein the magnet has both sides thereof supported by the primary piston and a return spring that is provided between the primary piston and the secondary piston, respectively. |
