Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Reexamination Certificate
2002-05-30
2003-06-03
Ngo, Hung V. (Department: 2831)
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
C439S076200, C361S752000
Reexamination Certificate
active
06573448
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an electrical device, in particular, a switching device or a control device in a motor vehicle.
BACKGROUND INFORMATION
To sealingly join housing parts and a plug body to one another to prevent the ingress of moisture into the control-device interior, the individual component parts of the control device may be joined to one another by interposing a separating layer made of a flexible seal, as referred to in German Published Patent Application No. 195 16 708. Critical to production, however, are those joints where more than two parts, for example, the two housing parts and the plug body, come into direct contact, since manufacturing and assembly tolerances accumulate in this area. Sealing problems may therefore arise in series production.
SUMMARY OF THE INVENTION
It is believed that an exemplary electrical device and method according to the present invention, such as a switching or control device in a motor vehicle, have the advantage of achieving a reliable sealing of the control device towards the outside. This is essentially due to a projection of the plug body engaging with a recess in the one housing part, which is provided with sealing compound, in the join region where more than two component parts come into contact. In this manner, the sealing compound is displaced in a controlled manner in the direction of the other housing part, so that there is a certain volume of sealing compound present in the join region of the three component parts.
dr
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is an exploded view of a control device for a motor vehicle having an exemplary housing according to the present invention.
FIG. 2
is a sectional view of a control device in the critical join region.
FIG. 3
is a perspective view of part of the housing cover shown in FIG.
1
.
FIG. 4
shows the housing cover of
FIG. 3
subsequent to the application of a sealing compound.
FIG. 5
shows the housing cover of
FIG. 4
showing the placement of the sealing compound in the housing base, without the housing base.
REFERENCES:
patent: 4893215 (1990-01-01), Urushiwara et al.
patent: 5550324 (1996-08-01), Black et al.
patent: 5761046 (1998-06-01), Hein et al.
patent: 6407925 (2002-06-01), Kobayashi et al.
patent: 195 16 708 (1996-11-01), None
Mayer Frank
Schiefer Peter
Kenyon & Kenyon
Ngo Hung V.
Robert & Bosch GmbH
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