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US 8,235,018 B2Granted
Tappet
AssigneeSchaeffler Technologies AG & Co. KG
InventorsStefan Dorn, Norbert Geyer, Karsten Kucht
Life of this patent
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AssigneeSchaeffler Technologies AG & Co. KG
InventorsStefan Dorn, Norbert Geyer, Karsten Kucht
Estimating the term…
A tappet (1), either for a high-pressure fuel pump or for a valve train of an internal combustion engine, with a housing (2) whose driven side (3) used for a contact of a tappet-following part forms a contact on a bottom side (4) of a bridge part (6) projecting through an inner casing (5) of the housing (2). An anti-rotation locking device (10) projects past the outer casing (8) of the housing with a first cylinder section (9) and sits in a window (7) of the housing (2), with this anti-rotation locking device (10) being provided as a cylindrical element, and tab-like projections (13) project from peripheral walls (11) of the window (7) and the anti-rotation locking device (10), standing “loose” in the window (7), snaps behind these projections. A second cylinder section (14) of the anti-rotation locking device extends behind the inner casing (5) of the housing (2), and the bridge part (6), extending on an axial section of the anti-rotation locking device (10), has in its peripheral section a recess (15) in its outer surface (16), with the second cylinder section (14) of the anti-rotation locking device (10) being supported against this recess.
Cam-following or eccentric-following tappet for an internal combustion engine, comprising an essentially cylindrical housing having a driven side that is adapted to contact of a tappet-following part formed by a bottom side of a bridge piece that extends across an inner casing of the housing, an anti-rotation locking device in a form at least similar to a cylinder projects past an outer casing of the housing and includes a first cylinder section that is located in a window of the housing, tab projections project into the window and the anti-rotation locking device, standing “loose” relative to and in the window, is snapped behind the projections, and a second cylinder section of the anti-rotation locking device extends behind the inner casing of the housing and wherein the bridge piece, extending on an axial section of the anti-rotation locking device, has in a peripheral section thereof a recess in its outer surface, with the second cylinder section of the anti-rotation locking device being supported against the recess.
Dependencies are inferred from the claim text.