| 摘要 |
PURPOSE:To automate assembly and realize shortening of the whole length by forming a valve plunger incorporated in a valve body monolithically with an input shaft, and forming the axial length of a guide part of the valve plunger relatively short. CONSTITUTION:An axial passage 16 connecting a negative pressure chamber 9 to a third hole 4 is drilled in a valve body 4 located so as to penetrating a rear shell 3, and the front end part of a valve plunger 17 or a guide part 17a is loode-fitted into a first hole 12 of the valve body 4. At the right end part of the valve plunger 17, an input shaft 18 interlocked with a brake pedal is formed monolithically with the end part of the valve plunger, and the axial length (a) of the guide part 17a is set relatively short so that the valve plunger 17 and the input shaft 18 can be tilted larger than the largest tilt angle of the input shaft 18 during the operation of a brake pedal. A control valve 22 is located between a second hole 13 and the third hole 14 of the valve body 4, and energized to the left by a spring 33. |
