Modular jack with filter insert and contact therefor

Details Modular jack with filter insert and contact therefor Modular jack with filter insert and contact therefor

1999-06-22

2001-11-20

Leubke, Renee (Department: 2833)

Electrical connectors

With circuit component or comprising connector which fully...

Termination circuit

C439S941000

Reexamination Certificate

active

06319064

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to electrical connectors and more particularly, to electrical connectors in which noise filter means are incorporated.
BACKGROUND OF THE INVENTION
In electronic appliances containing modular jacks, various types of filters are used to reduce or eliminate noise. Such filters may include a three terminal capacitor or a common mode choke coil. A disadvantage in the use of such filters is that they may complicate the production of the circuit board. A need, therefore, has been perceived for providing a simple means of filtering noise in modular jacks.
The use of an integral ferrite element for this purpose is proposed in Japanese Patent Publication 64-2273. This reference discloses a modular jack having a modular insert installed in a casing. The body of the insert is formed with ferrite, and on one side of the insert body insert holes are formed for introducing connecting lines to be connected to respective contact springs.
While this reference would appear to simplify the apparatus used for noise filtering in modular jacks, a need for further increasing the compactness of such modular jacks with integral ferrite elements exists. U.S. Pat. No. 5,456,619 discloses a filtered modular jack assembly having an outer insulative housing with open front and rear sides. A ferrite element with vertical conductive wires is positioned adjacent the rear end, and an elongated insulative insert is superimposed over the ferrite element. The insulative insert is fixed to the housing, and the conductive wire extends vertically from the ferrite element over the upper side of the insert to its terminal end and then bends downwardly and rearwardly to rest on the top surface of an interior medial wall in the housing. While this reference discloses an invention which increases compactness, a need still exists for a jack which can achieve such compactness while using alternate types of filtering elements which arc not adapted to be mounted in the same way as the ferrite element.
A need also exists for such a compact jack that can accept multiple types of contacts for contacting respective contact-receiving elements on an underlying substrate. In addition, a need exists for such a compact jack with contacts that are spaced from an outer jack shield, wherein shorting to the jack shield or sparking to the jack shield during periods of high voltage is minimize or eliminated.
SUMMARY OF THE INVENTION
The present invention is a modular jack assembly which includes an outer insulative housing having top and bottom walls and opposed lateral walls while defining an interior section. This housing also has front and rear open ends. This assembly also includes an insulative insert having a top section, an upper side and a rear section having a base side and a recess. The jack is positioned so that the upper side of its top section is adjacent to top side of the insulative housing such that its terminal end extends into the interior section of the insulative housing and the rear section at least partially covers the rear open end of the insulative housing. This assembly also includes an electronic component mounted in the recess in the rear section of the insulative insert. A conductor is mounted on the insulative insert. This modular jack provides a filtering element which is adapted to be easily and compactactly mounted in the jack.
Such modular jack has an insulative insert having outer walls defining a first recess therein. The insert is mounted within an interior section of an insulating housing. A cap having outer walls defining a second recess therein is mounted within the first recess of the insulative insert so that the first recess and the second recess together form an internal cavity for receiving an electrical device such as the filtering clement therein. At least one conductive contact having first and second elongate portions connected by a bridging portion is coupled to the jack. The first and second elongate portions together securely grasp the outer wall of the insert, and the bridge portion resides at an edge of the outer wall of the insert.
The cap also has a rear wall having a rear face that faces in a rear direction, and the contact also has a rear portion adjacent the cap and facing in the rear direction. The rear face of the rear wall of the cap extends farther in the rear direction than the rear portion of the contact. A grounding shield is fitted over the jack and has a generally planar rear panel with a rear face that faces in the rear direction. The rear panel covers the rear face of the rear wall of the cap and also covers the rear portion of the contact.


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