| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative pressure booster including a negative pressure sensor using a mounting part to a front shell half body as a negative electrode, and to positively electrically connect the mounting part to a vehicle body via front and rear shells.SOLUTION: Front and rear shell half bodies 1a, 1b are painted; opposing ends of the front and rear shell half bodies 1a, 1b are mutually joined by closely contacting a shear surface 37a of a caulking pawl 37 formed by a slit in one end to the other end; the mounting part to be mounted to the front shell half body 1a of a negative pressure sensor is used as a negative electrode; and to electrically connect the mounting part to a vehicle body F via the front and rear shell half bodies 1a, 1b, an unpainted area 39 closely contacting the shear surface of the caulking pawl 37 and not applied with paint is provided in the other end. |
