| 摘要 |
Disclosed is a brake master cylinder. The brake cylinder include a cylinder body, a first piston and a second piston that are provided in the cylinder body so as to perform a reciprocating motion, and a hall sensor installed outside the cylinder body and configured to sense operations of the first and second pistons to control on/off of a brake lamp. The brake master cylinder is provided with a magnet installed on the first piston, and a rotation preventing member configured to limit rotation of the first piston, wherein as rotation of the first piston is limited, the magnet is installed at a portion of the first piston that faces the hall sensor. |
| 主权项 |
1. A brake master cylinder comprising a cylinder body, a first piston and a second piston that are provided in the cylinder body so as to perform a reciprocating motion, and a hall sensor installed outside the cylinder body and configured to sense operations of the first and second pistons to control on/off of a brake lamp, the brake master cylinder comprising:
a magnet installed on the first piston; and a rotation preventing member configured to limit rotation of the first piston, wherein as rotation of the first piston is limited, the magnet is installed at a portion of the first piston that faces the hall sensor. |
