A brake master cylinder includes a BLS module to control the switching on of a brake lamp according to an operation of a piston provided to reciprocate within a cylinder body. The BLS module includes: a magnet fixed to a guide hole formed in the cylinder body in a lengthwise direction of the cylinder body; an actuating member coupled to the piston so as to be moved together with the piston as the piston is moved; a Hall sensor installed in the cylinder body at a location corresponding to the magnet for detect the magnetic flux density of the magnet; and a shielding member slidably provided in the guide hole and moved by the actuating member for shielding the Hall sensor from the magnet.
Brake master cylinder for stably detecting magnetic flux density
2017-05-16
Patent
Electronic Resource
English