Device with a diaphragm arrangement
AssigneeRobert Bosch GmbH
InventorsStanislaus Tomczak, Roland Hoepel, Ralph Ittlinger, Volker Hudec
Life of this patent
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Abstract
A device with a diaphragm arrangement dividing two chambers from one another, in which the diaphragm arrangement is retained via a crimped connection, excellent restraint of the diaphragm arrangement and excellent sealing are attained with the aid of an elastomer material. The device may be a pressure valve, for instance, and serves to vary a pressure of a fuel supply system of a motor vehicle.
Claims20
A device with a diaphragm arrangement, the device comprising a first retaining element (6), a second retaining element (8), the first retaining element (6) and the second retaining element (8) being connected to one another via a crimped connection (21) with the diaphragm arrangement (10) being fastened at its circumferential region (10.4) between the first retaining element (6) and the second retaining element (8) in the region of the crimped connection (21), the first retaining element (6) having a flange (6.2) extending essentially parallel to the diaphragm arrangement and ending in an encompassing end face (6.6), the second retaining element (8) having both a counterpart flange (8.2), extending essentially parallel to the diaphragm arrangement (10), and a crimped overlap (8.4), the crimped connection (21) being formed by bending the crimped overlap (8.4) over the circumferential region (10.4) of the diaphragm arrangement (10) and over the encompassing end face (6.6) of the first retaining element (6), the circumferential region (10.4) of the diaphragm arrangement (10) protruding radially with a projecting region (10.6) past the end face (6.6) of the first retaining element (6), and an elastomer material (22) fastened in a compression chamber (24) that adjoins both the end face (6.6) of the first retaining element (6) and the projecting region (10.6) of the diaphragm arrangement (10) as well as the crimped overlap (8.4) of the second retaining element (8).
Dependencies are inferred from the claim text.