Arrangement, in particular in vehicles, for transmitting electri

Details Arrangement, in particular in vehicles, for transmitting electri Arrangement, in particular in vehicles, for transmitting electri

1996-02-12

1998-10-13

Elms, Richard T.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307104, 336DIG2, 34031007, 364424059, H01F 3800

Patent

active

058216324

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

Automobile doors nowadays accommodate quite a number of electric devices which must be supplied with direct current and electric control signals, e.g. window lifters, adjustable exterior mirrors, exterior mirror heating, hazard light, door lock contacts, contacts for indoor lighting, loud speaker, central lock, possibly also operating unit for an electric sun roof. Using conventional circuitry up to 40 wires are required to cover these needs. This presents, however, a considerable problem when mounting the doors and renders door repairs more difficult, since the wires must not only be installed, partly in the door and partly in the rest of the automobile body, but also in the automobile frame and, by means of a flexible cable harness, into the respective door.
Additionally, most wires conduct a load current and must therefore have a sufficiently large cross-sectional area. Considering the fact that the number of electric wires in automobiles has strongly increased in the past years (a modern medium-sized automobile contains approximately 1000m cable), automobile manufacturers have in the meantime serious problems to accommodate the extensive cable harnesses in the automobile.
Additionally, with increasing number of cables the number of coaxial connectors required to enable the mounting and dismounting of a door increases also. Most of the break downs in the automobile electronics and electric are due to contact problems of the coaxial connectors of the harnesses. Contact problems are facilitated by moisture and aggressive substances penetrating into the coaxial connectors, especially in automobiles. Especially information cables with small signal currents are frequently affected, since, unlike in coaxial connectors conducting load currents, virtually no self cleaning of contact surfaces occurs.
The objective of the present invention is to reduce the susceptibility to break downs brought on by the increasing extend of wiring.
According to the invention electric signals are transmitted by coaxial connectors with transformer-like coupling. It follows that by doing so not only are all contact problems in coaxial connectors eliminated, but simultaneously it becomes possible to drastically reduce the extend of wiring, since alternating current signal is required for the transformer-like signal transmission in coaxial connectors and same can be utilized as carrier signal which can be modulated for not only one but several different signals to be transmitted to the door. Fundamentally one two-wire circuit only is sufficient to transmit all occurring signals to the door. For this purpose one part of the coaxial connector is affixed to the automobile door and the other part of the coaxial connector to another part of the automobile body. This way reliable signal transmission is possible into automobile doors which are rotatable supported on hinges, since, if the coaxial connector is mounted on that side of the door which is affixed on the car frame, then the two parts of the coaxial connector remain in predetermined, closely spaced configuration, also during swivel movements of the door, guaranteeing intensive coupling. It is even possible to configure one of the door hinges itself as a coaxial connector. For signals which are transmitted inductively into the door, electric wires between door and automobile frame are not needed, facilitating wiring significantly and significantly improving ease of door repair.
According to the invention not only control signals can be transmitted for power consuming devices located in the door and their corrective action elements, but also low frequency signals from a car radio or another audio installation in the automobile to a loud speaker located in the door. For this purpose the low frequency signals as well as control signals are modulated onto an alternating current carrier signal, which is in turn transmitted inductively in the coaxial connector and from which control signals and low frequency signals can be restored through demodulation using an

REFERENCES:
patent: 3441887 (1969-04-01), Costa
patent: 3721958 (1973-03-01), Dixon
patent: 4941258 (1990-07-01), Wright
patent: 5142278 (1992-08-01), Moallemi et al.
patent: 5341280 (1994-08-01), Divan et al.
patent: 5473200 (1995-12-01), Woo
patent: 5508709 (1996-04-01), Krenz et al.
patent: 5528086 (1996-06-01), Maass et al.
(Rudi, et al) 06 Nov. 1984 2 572 845-A1 no translation.
(Hirrlinger) Dec. 04, 1990 DE 4011941 no translation.
(Bertot) Jun. 11, 1984 FR 8416881 no translation.

Affiliated with

Also associated with

Rating

Arrangement, in particular in vehicles, for transmitting electri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement, in particular in vehicles, for transmitting electri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement, in particular in vehicles, for transmitting electri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-315710