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US 5,957,030 AGranted
Actuator and the process for its assembly
AssigneeFahrzeugtechnik Ebern GmbH
InventorsChristoph Keller, Gerhard Meyer, Siegbert Stretz
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AssigneeFahrzeugtechnik Ebern GmbH
InventorsChristoph Keller, Gerhard Meyer, Siegbert Stretz
Estimating the term…
An actuating cylinder (2), especially for a hydraulic clutch operation device in a motor vehicle, is disclosed, having a piston unit (6) arranged in a housing (4) and guided via a guide sleeve (8) which is permanently connected to the housing, wherein the piston unit can be displaced by means of a thrust bolt (10). A thrust bolt head (12) is permanently attached directly to the thrust bolt and its relative position with regard to the thrust bolt determines the working stroke (H) of the piston unit, which is done at the time of assembly of the actuating cylinder already. The thrust bolt head is slid onto the thrust bolt and the working stroke between the guide sleeve and the thrust bolt head is adjusted before the thrust bolt head is attached to the thrust bolt. The actuating cylinder and its assembly are simplified according to this invention, so that subsequent work in adjusting the working stroke can be eliminated.
An actuating cylinder with a piston unit arranged in a housing and guided via a guide sleeve permanently connected to the housing, the piston unit being displaceable by means of a thrust bolt, wherein a thrust bolt head is permanently attached directly to the thrust bolt with plastic deformation such that a working stroke of the piston unit is defined by the relative position of the thrust bolt head relative to the thrust bolt.
An actuating cylinder according to claim 8, wherein the guide sleeve has an inside ring section that guides the piston unit and has the stop face as well as an outside ring section connected to housing, wherein the inside ring section is connected to the outside ring section by a web and a plurality of longitudinal ribs.
An actuating cylinder with a piston unit arranged in a housing and guided via a guide sleeve permanently connected to the housing, the piston unit being displaceable by means of a thrust bolt the thrust bolt, wherein the thrust bold head is made of a plastic and has an orifice to accommodate an end of the thrust bolt, while the thrust bolt is made of metal and has a profiled section on its end that is accommodated in the orifice of the thrust bolt head, the profiled section being secured by heat embedding in the orifice of the thrust bolt head such that a working stroke of the piston unit is defined by the relative position of the thrust bold head relative to the thrust bolt.
A method for assembling an actuating cylinder with a piston unit arranged in a housing and guided via a guide sleeve permanently connected to the housing, the piston unit being displaceable by means of a thrust bold to which a thrust bold head is permanently and directly attached with plastic deformation such that a working stroke of the piston unit is defined by the relative position of the thrust bold head relative to the thrust bolt the method comprising the following steps:
Dependencies are inferred from the claim text.