Flexible conductive tape connection

Details Flexible conductive tape connection Flexible conductive tape connection

1999-01-18

2001-11-20

Bradley, Paula (Department: 2833)

Electrical connectors

Interrelated connectors relatively movable during use

Linear movement

C439S066000, C439S492000, C174S069000, C191S01200C

Reexamination Certificate

active

06319012

ABSTRACT:

PRIOR ART
The invention relates to a flexible strip conductor connection, in particular for a control or regulating device having a set-off sensor or servo component, in accordance with the preamble of claim
1
.
In a flexible strip conductor connection known from DE 40 38 394 A1, an electrical connection is provided between a control arrangement for a magnetic valve in a motor vehicle and an angle sensor for detecting the angle of rotation of a fuel injection pump. The angle sensor is supplied with an electrical voltage by means of the strip conductors placed into a flexible foil and emits a sensor signal to the control device.
With the known angle sensor, the flexible foil is clamped between the cover and the housing so that when the unit, on which the angle sensor is fastened, is operated, mechanical vibrations are transmitted to the flexible foil. For example, if the angle sensor is employed on the pump shaft of a fuel injection pump of a motor vehicle, there is the possibility of shocks, which are a function of the number of cylinders in particular, being transmitted to the flexible foil. The number of shocks here is a function of the number of cylinders of the internal combustion engine. These relatively frequent and short shocks can lead to breakage of the strip conductors in the foil, mainly at the clamping location of the flexible foil between the cover and the housing of the angle sensor, and therefore to error functions.
ADVANTAGES OF THE INVENTION
In the further development with the characterizing features of claim
1
, the flexible strip conductor connections of the type described at the outset is advantageous in that a buffer for the mechanical shocks is created by the loop in the flexible foil, or respectively in the strip conductors. A change in the length of the foil and the strip conductors of a size between 0 and 300 &mgr;m is caused by the shocks transmitted to the flexible foil. The installation of the loops in accordance with the invention here results in a reduction of the expansions caused by the shocks and of the mechanical stress in the strip conductors and the flexible foil.
This reduction in the stretching of the strip conductors in the course of the individual shocks, which is also successfully provided in the further developments in the dependent claims, increases the long-time service life of the strip conductors, so that the loss of the sensors as an external component because of a break in the strip conductors in the flexible foil is prevented to a large extent during the length of operation of the arrangement.


REFERENCES:
patent: 3736396 (1973-05-01), Siegel
patent: 4703649 (1987-11-01), Eitoku et al.
patent: 4800461 (1989-01-01), Dixon et al.
patent: 4818823 (1989-04-01), Bradley
patent: 5198391 (1993-03-01), Roesel et al.
patent: 5358412 (1994-10-01), Maurinus et al.
patent: 5395253 (1995-03-01), Crumly
patent: 5481795 (1996-01-01), Hatakeyama et al.
patent: 5518415 (1996-05-01), Sand
patent: 5563521 (1996-10-01), Crumly
patent: 5742484 (1998-04-01), Gillette et al.
patent: 40 38 394.6 (1990-12-01), None
patent: 42 29 727 A1 (1994-03-01), None
patent: 43 25 980 A1 (1995-02-01), None
De-Prospekt Der Fa. Adapt Elektronik Programmuebersicht 84/85 (Elektronika 1984).
Special Report Designer Must Plan Early For Flat Cable, Electronic/Jul. 5, 1973, pp. 84-88.

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