Actuator with a duct opening sealed during extrusion coating against the ingress of plastic

US6974088B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Roland Albert · Regensburg, DE
• Johann Heigl · Bernhardswald, DE
• Markus Mohr · Ulmen, DE
• Klaus Niesslbeck · Dresden, DE

Key dates

• Filing date: Oct 23, 2003
• Grant date: Dec 13, 2005
• Expiry date: Apr 30, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/21
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An actuator with a top plate comprises at least one duct opening for a respective electric contact pin. A contact stud carrier with a contact stud is placed over the contact pin. To prevent the possible ingress of plastic into the duct opening between a gap (s) between the contact stud carrier and the top plate during extrusion coating of the actuator or its top plate, according to the invention it is proposed that a sealing washer be located onto the open side of the duct opening of the top plate to provide a hermetic seal. As a result, the contact stud carrier can advantageously always be arranged independently of the thickness of the sealing washer such that a specified actuator length (L) can be precisely maintained. This simplifies the production process for the actuator and reduces its production costs.