Design of a lambda module with mating plug

Details Design of a lambda module with mating plug Design of a lambda module with mating plug

1998-09-10

2000-10-17

Patel, Tulsidas C.

Electrical connectors

With circuit component or comprising connector which fully...

Connector includes or covers additional component

H01R 1366

Patent

active

061322563

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The subject of the invention is a lambda module with a mating plug for lambda probes of catalytic converters.
2. Description of the Related Art
A lambda module of this type consists, as is known, of a housing in which an electronic hybrid module with the corresponding two electrical terminals is accommodated. A plug-in connector is molded on the housing, into which connector the mating plug, mounted on a connecting cable, can be inserted and locked.


SUMMARY OF THE INVENTION

The object of the invention is to provide a design for a lambda module of this type that is especially advantageous and easily assembled, especially with regard to the mounting of the hybrid module. In previous designs, soldering the contacts to the hybrid module and the required adjustment posed problems.
This objective is achieved according to the invention by the design described in the claims.
An embodiment of the invention will now be described in greater detail with reference to the attached drawings.


BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the lambda module together with the mating plug in an exploded perspective view, and
FIG. 2 shows the lambda module with the mating plug connected (but not showing the cable), likewise in a perspective view, but assembled and viewed from a different direction.


DESCRIPTION OF THE PREFERRED EMBODIMENT

The lambda module consists of a module housing 1 with a molded module carrier 2 for a hybrid module 3. Hybrid module 3, in the form of a small plate which serves for laser adjustment, can be inserted into the module carrier 2 from below in the embodiment shown and can be latched by means of latching noses provided thereon. In the chambers surrounded by module carrier 2 there are two contacts 4 molded into modular housing 1, said contacts being soldered to hybrid module 2 after it has been inserted.
Module carrier 3 is made in the shape of an open frame and thus surrounds a space that is open at the top and bottom. This frame can be a rectangular frame as shown, but it could also have only a fork- or U-shape. In the latter case (not shown) the hybrid module plate could also be inserted sideways like a drawer, in matching guide grooves for example.
The frame shape of module carrier 2 that surrounds hybrid module 3 only at its circumference allows free access to hybrid module 3 for laser adjustment and for soldering the contacts.
In order to protect contacts 4 and hybrid module 3 from water, oil, dirt, and other contaminants, a cap 5 is provided, said cap being capable of being pushed over module 3 carrier 2 following adjustment of the hybrid module and following soldering of the contacts, and latching by lateral latching arms 6 with matching latching noses molded on module housing 1. An annular seal 7 is mounted previously on neck 8 between module carrier 2 and the remainder of module housing 1, thus sealing the front end of cap 5 when mounted.
For latching cap 5, a first pair of latching noses 9 is formed on module housing 1 for preliminary latching and a second pair of latching noses 10 is provided for final latching.
In order to guarantee pressure equalization in the hybrid module chamber that is hermetically sealed when the cap is in place, a recess is provided in module housing 1, with a pressure equalizing membrane 11 glued onto said recess. This pressure equalizing membrane 11, when cap 5 is mounted, is protected by a covering tongue 12 molded on it so that it projects at the top, and is thus protected against mechanical damage and contamination.
On the other side of module housing 1 (relative to module carrier 2), a receptacle 13 is provided. This receptacle serves to receive a mating plug 14 with interposition of a sealing cushion 15. Mechanical encoding on the receptacle and (not visible in FIG. 1) on mating plug 14 prevents the mating plug from being inserted with the incorrect orientation.
To secure and lock mating plug 14 in receptacle 13, a pivotable tightening clip 17 is provided on the mating plug. This clip, with s

REFERENCES:
patent: 4412714 (1983-11-01), Morningstar et al.
patent: 5490785 (1996-02-01), Hein et al.
patent: 5529515 (1996-06-01), Ohtaka et al.
patent: 5820409 (1998-10-01), Clark et al.

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