| 摘要 |
<p>A housing for a brake booster (100) having a first shell (10) joined to a second shell (30) by deforming a first peripheral surface on a flange (24) of the first shell (10) with respect to a second peripheral surface, (204) on the second shell (30) toward an axial center of the second shell (30). The deformation axially compresses a bead (26) on a diaphragm (28) located between the first (10) and second (30) shells to seal an interior of the housing from the surrounding environment. The housing is characterized by the first peripheral surface having a flange (24) that extends from a shoulder (18) to an opened end (16) thereof that receives the second shell (30). The flange (24) has a plurality of slits (36,36', . . . 36n) that axially extend from the opened end (16) toward the shoulder (18) and a plurality of slots (38,38', . . . 38n) located in a radial plane perpendicular to the opened end (16). The plurality of slots (38,38', . . . 38n) are sequentially spaced in the flange (24) with respect to the plurality of slits (36,36', . . . 36n) and the deformation of the first peripheral surface substantially occurs in the flange (24) at mid-points (50) between the plurality of slits (36,36', . . . 36n) and adjacent mid-points of the plurality of slots (38,38', . . . 38n) such that the opened end (16) remains in a substantially circular shape.</p> |
