Piston And Cylinder Unit With An Add-On Part
AssigneeZF Friedrichshafen AG
InventorsHarmut RÖLLEKE, Dirk BECKER, Wolfgang HERTZ, Klaus SCHREINER
Life of this patent
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Abstract
A piston-cylinder unit having a cylinder with an add-on part which has a fastening portion that contacts a contact surface of the cylinder. A positive engagement connection fixing the add-on part to the cylinder is provided between the add-on part and the cylinder. The positive engagement connection is formed by a deformable rivet that extends through the fastening portion in a final assembly position and forms an undercut with the cylinder.
Claims8
-7. (canceled)
A piston-cylinder unit comprising:
- a cylinder having a contact surface;
- an add-on part having a fastening portion that contacts the contact surface of the cylinder;
- and
- a deformable rivet that extends through the fastening portion in a final assembly position configured to form an undercut with the cylinder creating a positive engagement connection fixing the add-on part to the cylinder.
A method for producing a piston-cylinder unit having a cylinder with an add-on part comprising:
- fixing the cylinder;
- positioning the add-on part with a fastening portion thereof at the cylinder;
- positioning a counter-holder relative to a side of the cylinder remote of the fastening portion;
- feeding movement of a tool carrying a rivet;
- piercing the fastening portion with the rivet;
- and
- forming an undercut of the cylinder in the counter-holder.
Dependencies are inferred from the claim text.