# US 7,744,419 B2 · Appliance connector device with integrated filter module

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- Number: US 7,744,419 B2
- Document ID: US7744419B2
- Status: Granted
- Kind: B2
- Application number: 12/217,855
- Filed: 2008-07-09
- Published: 2009-01-15
- Granted: 2010-06-29
- Earliest claimed: 2007-07-12
- Assignees: Schurter AG
- Inventors: Herbert Blum; Heinz Amrein
- Web page: https://patentgrep.com/patent/US7744419B2

## CPC

- H01R 24/70: with additional earth or shield contacts
- H01R 13/652: with earth pin, blade or socket
- H01R 13/6582: with resilient means for engaging mating connector
- H01R 13/7195: with planar filters with openings for contacts
- H01R 2103/00: Two poles
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

The present invention relates to an appliance connector device having an A plug contact, a B plug contact and a G plug contact, an A′ terminal, a B′ terminal and a G′ terminal, an electrically conducting filter jacket and a filter module, wherein the filter module has an A″ conductor, a B″ conductor and a G″ conductor, wherein the A contact is connected to the A′ terminal via the A″ conductor, wherein the B contact is connected to the B′ terminal via the B″ conductor, wherein the G contact is connected to the G′ terminal via the G″ conductor, wherein the G″ conductor of the filter module has a shielding plate extending in a cross-sectional plane of the filter jacket and wherein the filter module has capacitance elements on both sides of the shielding plate with conducting surfaces aligned parallel to the shielding plate to generate capacitances between the A″ conductor and the B″ conductor and between these conductors and the G″ conductor. With such a plug device, it is provided, in particular for improving the ground connection of the G″ conductor of the filter module, that the shielding plate is provided with a plurality of contact fingers at the edge along most of its circumference, these contact fingers being in contact with the filter jacket on the inside under elastic tension, and the filter element has a contact surface for establishing a ground connection.

## Claims

### Claim 1

Appliance connector device, comprising:
an A plug contact, a B plug contact and a G plug contact;
an A′ terminal, a B′ terminal and a G′ terminal;
an electrically conducting filter jacket having an inside, a cross-sectional plane and a contact surface for establishing a ground connection; and
a filter module having at least one conducting surface, said filter module including:
an A″ conductor for connecting the A′ terminal to the A plug contact;
a B″ conductor for connecting the B′ terminal to the B plug contact; and
a G″ conductor for connecting the G′ terminal to the G plug contact, said G″ conductor of the filter module including a shielding plate, said shielding plate having:
at least one edge, a circumference, an inside, two sides and a plurality of contact fingers on the edge along most of its circumference, the contact fingers being in contact with the filter jacket on the inside under elastic tension;
said shielding plate extending in the cross-sectional plane of the filter jacket;
wherein the filter module has capacitance elements on both sides of the shielding plate with the at least one conducting surface aligned parallel to the shielding plate to create capacitances between the A″ conductor and the B″ conductor and between A″ conductor, the B″ conductor and the G″ conductor.

### Claim 2 (depends on 1)

Appliance connector device according to claim 1, wherein the G contact is connected directly to the G′ terminal, and the shielding plate further includes a connector lug at the edge of the shielding plate through which the G′ terminal is plugged.

### Claim 3 (depends on 1)

Appliance connector device according to claim 1, wherein the filter module has electrically conducting shells on both sides of the shielding plate that are electrically connected thereto, the capacitance elements being arranged in the shells.

### Claim 4 (depends on 3)

Appliance connector device according to claim 3, wherein one of said capacitance elements assigned to the A″ conductor and to the B″ conductor is provided in each shell.

### Claim 5 (depends on 3)

Appliance connector device according to claim 3, wherein the A″ conductor and the B″ conductor are designed in the form of pins and are passed through the filter module at a right angle to the shielding plate.

### Claim 6 (depends on 1)

Appliance connector device according to claim 1, wherein the A plug contact, the B plug contact and the C plug contact are arranged and held in a front insulating housing part.

### Claim 7 (depends on 6)

Appliance connector device according to claim 6, wherein the filter jacket forms a hood inverted over the front insulating housing part and the filter module arranged behind the front housing part.

### Claim 8 (depends on 7)

Appliance connector device according to claim 7, wherein the contact surface of the filter jacket comprises a collar surface to establish a ground connection.