Preh-werke Gmbh Co. Kg

Preh Gmbh

Hans-Karl Heil

Gerhard Hochgesang

Ulrich Bruggemann

Andre Kessler

Herbert Bonrath

Martin Sünnemann

Holger Steinmüller

Ulrich Bruggeman

Dieter Gottwalt

The present disclosure relates to a visible part for an operating part or decorative panel, in particular for use in a motor vehicle, including a layer structure with the following layer sequence of layers while forming interfaces: a lower substrate layer; a decorative layer; an upper cover layer, wherein the upper cover layer is any one of: translucent and transparent; wherein the layer structure forms an end face into which an access to at least one interface enters, and wherein the substrate layer forms a projection with respect to the upper cover layer of the layer structure; wherein the visible part furthermore has an upper transparent protective paint layer, which covers the cover layer and the end face and which, if the visible part is attached as intended, forms a top surface facing towards an observer and covers the access; as well as to an associated manufacturing method.

Visible part having a layer structure for an operating part or a decorative trim with better protection as a result of a protective paint coating

A push button switch, particularly a power supply switch, has contacts (4, 5) attached to a housing and a movable contact bridge (8) which is moved by means of a spring plunger (10'). A spring switching mechanism (26) transmits force between the spring plunger (10') and a manually-actuated switch actuator (22'). The switch actuator (22') is alternately latched and unlatched by a locking linkage (27, 28) which alternately holds the switch actuator in 'switched-on' and 'switched-off' positions when the switch actuator is repeatedly pushed. Additionally, a switching rocker (51) is provided between the switch actuator (22') and the spring plunger (10') to improve switching action. The switching rocker (51), at the beginning of 'switching-on' and 'switching-off' operations, forcibly carries the spring plunger (10') in its respective switching direction through a partial path of its contact stroke (H). Following this partial path the spring switching mechanism (26) moves the spring plunger (10') to its respective 'switched-on' or 'switched-off' position.

Push button switch

A push button switch, particularly a master switch, has housing-affixed contacts (4, 7) and at least one contact bridge (8, 9) movable by a spring plunger (10). A spring-switching mechanism (24, 25, 26) is operatively coupled between the spring plunger and a manually-movable sliding switch, or switch actuator, (22). A guiding, or sliding, locking linkage apparatus for the sliding switch (22), which includes two locking parts, a first of which is a track (27) and a second of which is a follower lever (28) for engaging the track. Upon alternate depressions of the sliding switch, the sliding switch alternately moves between 'on' and 'off' positions. In order to prevent damage to the locking apparatus upon a pulling of the sliding switch in a direction opposite to a direction of depression of the sliding switch, the first and second locking parts release from the housing to follow movement of the sliding switch.

A push button switch, particularly a master switch, has housing-affixed contacts (4, 5) and a contact bridge (8) for bridging the contacts, with the bridge being moved by a spring plunger (10). A spring-switching mechanism (24, 25, 26) is operatively coupled between the spring plunger and a manually-movable sliding switch, or switch actuator, (22). The sliding switch (22) is engaged by a guiding, or sliding, locking linkage (27, 28) to be alternately moved between 'on' and 'off' positions upon being pushed in. In order to prevent manual inadvertent actuation from leading to increased wear and operational uncertainty, a pair of interacting rubbing surfaces (18, 19) is provided between the spring plunger (10) and a housing-affixed part (2) which provides an increased rubbing, or friction, between the spring plunger (10) and the housing-affixed part (2) shortly before an over-center snapping of the spring-switching mechanism (24, 25, 26) to thereby retard, or delay, a snapping movement of the spring plunger (10).

Growing community of inventors

Wildflecken, Germany

Hans-Karl Heil