| 摘要 |
A vacuum brake booster having a vacuum chamber and a working chamber, which are separated from one another by a movable wall, and a control valve is described. The control valve has a control valve housing ( 10 ), which is coupled workingly to the movable wall and which, for achieving a pressure difference at the movable wall, is capable of controlling the supply of atmospheric pressure or above-atmospheric pressure to the working chamber in dependence upon the displacement of an input element of the vacuum brake booster. The control valve housing ( 10 ) comprises an outer sleeve ( 12 ) and an inner sleeve ( 48 ), which is disposed radially at the inside of and coaxially with the outer sleeve ( 12 ) and is connected by a plurality of webs ( 58, 62 ) to the outer sleeve ( 12 ). The control valve housing ( 10 ) is manufactured by injection molding, wherein at least one injection point ( 42 ) is provided, which is disposed in the region of the outer sleeve ( 12 ) and at a distance from fastening points of the webs ( 58, 62 ) to the outer sleeve ( 12 ).
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