Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh

Hasan-Oezkan Karagoez

Friedbert Roether

Thilo Franzke

A housing having an interior, including: a) a pressure-compensation-device (PCD), for compensating a pressure in the interior as to surroundings of the housing, the interior being connected with the PCD, and an overpressure-valve (OV) with a lip-sealing-element (LSE) with a main-part and a flexible-sealing-lip (FSL), protruding radially-outwardly from an outer-circumference of the main-part and interacts with a sealing-surface (SS); b) an annular-channel (AC), between the main-part and SS, the FSL being in sealed contact with the SS with elastic-pretensioning in a sealing-position and sealingly closes the AC to prevent a flow-conducting connection between the interior/surroundings, and is lifted away from the SS in an open-position and opens the AC to provide a flow-conducting connection between the interior/surroundings; c) the FSL position between the sealing/open positions is controlled as a function of a pressure-difference between the pressure in the interior/surroundings, d) the main-part of the LSE has an inner-gas-through-channel (IGTC) connecting the interior/surroundings, e) the PCD includes a gas-permeable-membrane covering the IGTC, f) the OV and the membrane have a parallel connection, a pressure-difference between the interior/surroundings acting on the OV/membrane, having: g) the main-part and the FSL of the LSE are a single-piece elastomer, h) a borehole in a housing-wall, connectable with the interior/surroundings, i) the LSE is held in the borehole, the sealing-surface interacting with the FSL, and is formed by the radially-inner-circumferential-surface of the borehole.

Housing having a pressure compensation device

A releasable-positively-locking-connection (RPLC) between first/second bodies, including: a) a linear-guide between first/second bodies, so that the linear-guide is engage-able; b) a separate-securing-element, fastened releasably by one end in a first-opening in the first-body and/or in a third-opening in a third-body, so that the securing-element protrudes from the first-opening; and c) a second-body section, which is deformable elastically by the separate-securing-element in the longitudinal-axis-direction of the separate-securing-element and has a stop-face, with which the separate-securing-element is contactable; d) the elastically-deformable-section and separate-securing-element interact, e) to assemble the RPLC, e1) the linear guide is engaged between first/second bodies, and e2) first, the first-body is guided linearly in an assembly-direction along the linear-guide, the elastically-deformable-section being contacted by the separate-securing-element which protrudes out of the first-opening, and deformed elastically in the longitudinal-axis-direction of the separate-securing-element, e3) until, secondly, an assembly-end-position is reached, in which the separate-securing-element passes the stop-face and, the elastic-section springs back, and the separate-securing-element engages in a positively-locking manner behind the stop-face, and configures a stop, f) to dismantle the RPLC, f1) the separate-securing-element is released from the first/third-opening, and f2) the first-body is moved linearly along the linear-guide in a dismantling-direction, opposed to the assembly-direction, until the linear-guide doesn't engage between the first/second bodies.

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Pforzheim, Germany

Hasan-Oezkan Karagoez