Siemens Aktiengesellschaft

Mannesmann Vdo Ag

Armin Seeger

Thomas Hannewald

Rolf Oppermann

Peter Welteroth

Lutz Scholten

Wilhelm Bock

R&uuml;diger M&ouml;rbe

Michael Haede

Hans-J&uuml;rgen Johann

Horst Sch&auml;fer

Carlos Backes

A drive device ( ) with an actuating drive ( ) for driving a movable element ( ), in which drive device a lever ( ) coupled to the movable element ( ) is capable of being driven by the actuating drive ( ) via a gear ( ), the lever ( ) being capable of being acted upon by a firmly supported return spring ( ) so as to be capable of being pivoted back into a basic position ( ), and, in the basic position ( ), a first lever arm ( ) of the lever ( ) being acted upon by a stop ( ), is to have a particularly low space requirement and at the same time absorb momentum energy of the gear ( ) in a particularly reliable way in the event of a failure of the actuating drive ( ). For this, the first lever arm ( ) of the lever ( ) is subdivided by a clearance ( ) into a first part region ( ) and a second part region ( ), the first part region ( ) and the second part region ( ) each having a free end ( ), and at least the free end ( ) of the second part region ( ) being deformed in the direction of the free end ( ) of the first part region ( ).

Drive device

The invention relates to a method for producing a housing ( ) for a throttle valve connection piece ( ), which housing is to have particularly high dimensional stability. For this purpose, the housing ( ), which has a throttle orifice ( ) for a throttle valve ( ), is produced from plastic ( ) by the injection molding method, plastic ( ) being partially injected around a metal cylinder ( ) which, at least in the region of the throttle valve ( ), forms the throttle orifice ( ). In this case, before the injection molding method, an expanding mandrel ( ) is expanded against the inner face ( ) of the metal cylinder ( ). During the injection molding method, the inner face ( ) of the metal cylinder ( ) is supported at least partially by the expanding mandrel ( ). After the injection molding method, a reduction in the outer circumference ( ) of the expanding mandrel ( ) is carried out in order to remove the expanding mandrel ( ) from the interior ( ) of the metal cylinder ( ).

Method for producing a housing for a throttle valve connection piece

A throttle valve body ( ), especially for an internal combustion engine of a motor vehicle, having a tubular body ( ), which comprises at least an outer casing ( A, A), an inner casing ( B, B), a first end face ( C, C) and a second end face ( D, D), the inner casing ( B, B) of the tubular body ( ) forming a flow duct ( ) through which a gaseous medium ( ), especially air, can flow in a main flow direction ( ), a throttle plate ( ) swivel-mounted on a throttle shaft ( ) being arranged in the flow duct ( ), is to have an especially low weight and be manufactured at least partially from standard components. For this purpose the outer casing ( A, A) of the tubular housing ( ) is at least partially enclosed by a housing ( ) made of plastic ( ), at least one actuator ( ) for the throttle shaft ( ) being arranged in the housing ( ) and the tubular body ( ) being largely composed of metal ( ).

Throttle valve body

A throttle body ( ) which has a throttle housing ( ) made of plastic, a throttle butterfly ( ) being pivotably mounted in a conduit section ( ) of the throttle housing ( ), wherein, a metal cylinder ( ) is provided in the conduit section ( ) over at least part of the pivoting range of the throttle butterfly ( ).

Butterfly valve body

Growing community of inventors

Bad Soden, Germany

Armin Seeger