Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Reexamination Certificate
1999-09-28
2001-10-09
Reichard, Dean A. (Department: 2831)
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
C174S059000, C174S050510, C439S076200
Reexamination Certificate
active
06300565
ABSTRACT:
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The invention relates to a controller for a motor vehicle. The controller is formed of a base plate, a conductor track substrate disposed on the base plate, an electronic circuit connected to the conductor track substrate and a housing cover connected to the base plate in a contact region of the base plate. Such a controller is disclosed in Published, Non-Prosecuted German Patent Application DE 41 02 265 A1. This controller is distinguished by a housing of simple construction, which can be produced economically. A metal plate that is used as a heat sink is at the same time a part of the housing. The metal plate has a contact region with further housing parts only on one side. The controller is connected externally via a plug. The plug must also be mounted on the metal plate, and its connecting pins must be inserted into a conductor track substrate, and must be soldered there.
German Utility Model DE 295 01 849 U1 discloses a plastic housing, through whose walls electrical supply cables are passed. The ends of the supply cables project freely into the housing interior, where they are pressed into holes in a printed circuit board, by which the printed circuit board is mechanically held and is made contact with electrically.
Published, Non-Prosecuted German Patent Application DE 28 41 443 A1 discloses a printed circuit board which contains two thick layers of a base material. The upper layer has a metal coating on the underneath. The base material is cut away at the contact-making points. When components are being fitted to the printed circuit board, the connecting wires are pressed into the contact-making points. The wires pass through the metal coating, with a clawing action in the process.
SUMMARY OF THE INVENTION
It is accordingly an object of the invention to provide a controller for a motor vehicle that overcomes the above-mentioned disadvantages of the prior art devices and methods of this general type, in which an electronic circuit which is fitted on a conductor track substrate is connected in a particularly simple manner to electrical connections.
With the foregoing and other objects in view there is provided, in accordance with the invention, a controller for a motor vehicle, including:
a base plate having a housing contact region;
a conductor track substrate having a conductor track disposed on the base plate;
an electronic circuit electrically connected to the conductor track substrate;
a housing cover made of plastic and connected to the base plate in the housing contact region; and
electrical conductors having conductor ends encased and guided in the housing cover, one conductor end of the electrical conductors ends projects out of the housing cover in a direction of the base plate and produces an electrical connection to the conductor track on the conductor track substrate.
In one preferred embodiment, the electrical conductors, which project out of the housing cover and project into the baseplate or bottom plate, at the same time produce a mechanical connection between the housing cover and the base plate, and an electrical connection between the outside of the housing and the electronic circuit. Thus, the assembly of the housing and the electrical contact are produced at the same time just by fitting the housing cover onto the base plate. In this case, there is no need for any soldering process. The electrical connection produced in this way is reliably protected against any short circuit produced by metal swarf.
In order to improve reliability, or if there is no mechanical connection by the conductor, a connection between the base plate and housing cover can be made, for example, by riveting, screwing or pressing.
One preferred field of application for the invention is the integration of control electronics in an automatic transmission for fully-integrated transmission control. In this case, the control electronics are disposed on a circuit board that is located within the oil sump of the transmission.
The controller is particularly suitable for systems in which stamped grids must be connected to an electronic circuit in the controller. The stamped grids may in this case also be replaced by simple electrical wires.
Other features which are considered as characteristic for the invention are set forth in the appended claims.
Although the invention is illustrated and described herein as embodied in a controller for a motor vehicle, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
REFERENCES:
patent: 5252782 (1993-10-01), Cantrell et al.
patent: 5347160 (1994-09-01), Sutrina
patent: 2841443 (1980-04-01), None
patent: 4102265A1 (1992-07-01), None
patent: 29501849 (1995-05-01), None
patent: 0519202A1 (1992-12-01), None
Published International Application No. 95/00363 (Jakob et al.), dated Jan. 5, 1995.
Loibl Josef
Scheuerer Ulf
Greenberg Laurence A.
Lerner Herbert L.
Ngo Hung V
Reichard Dean A.
Siemens Aktiengesellschaft
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