Pressure contact connector

Details Pressure contact connector Pressure contact connector

1998-11-24

2001-07-31

Paumen, Gary F. (Department: 2833)

Electrical connectors

Contact comprising cutter

Insulation cutter

C439S749000, C439S404000

Reexamination Certificate

active

06267616

ABSTRACT:

TECHNICAL FIELD
The present invention relates to a pressure contact electrical connector.
BACKGROUND TO THE INVENTION
FIG. 9
shows a conventional pressure contact connector
6
comprising a connector housing
1
, and a female pressure contact terminal fitting
2
housed in a terminal housing chamber
3
formed within the connector housing
1
. The terminal fitting
2
has a long and narrow box-shape, a resilient contact member
5
being formed on the anterior end thereof, the contact member
5
fitting together with a corresponding terminal fitting (not shown). A pressure contact blade
4
is provided on the posterior end of the pressure contact terminal fitting
2
, an insulated electric wire W fitting thereto.
The electric wire W is attached to the pressure contact terminal fitting
2
by an automated machine. That is, the insulated wire W is pressed by a pressing means (not shown) of an automated machine onto the pressure contact blade
4
, the blade
4
and wire W accordingly becoming electrically connected. In practice, an anterior face of the housing is placed against a receiving face
9
of the automated machine, and a pressing force from the automated machine acts upon the posterior end face of the pressure contact terminal fitting
2
in the direction of arrow A, this force passing through the anterior face wall
3
A of the terminal housing chamber
3
and being received and stopped by the receiving face
9
. As a result, the pressure contact terminal fitting
2
is clamped between its anterior and posterior ends.
However, the pressure contact terminal fitting
2
has a long and narrow shape in the anterior-posterior direction.. Consequently, in the case where the pressing force from the automated machine is high, there is the possibility that the pressure contact terminal fitting
2
could change shape and bend inside the chamber
3
.
The present invention has been developed after taking the above problem into consideration, and aims to present a pressure contact terminal fitting which does not bend when the wire is pushed into the blade
4
.
SUMMARY OF THE INVENTION
According to the invention there is provided an electrical connector comprising a housing, a chamber in the housing, and an elongate pressure contact terminal fitting insertable within said chamber along an axis thereof, one end of said fitting having a slot extending in the direction of said axis, said slot defining a pressure contact blade for connection to an electric wire, and the other end of said fitting comprising a terminal for connection to a mating terminal fitting, wherein a mid-portion of said fitting has outwardly extending abutments on opposite sides thereof, said abutments being engageable with corresponding steps in the wall of said chamber, and resisting end loads applied to said one end along said axis.
The abutments preferably lie in a common plane perpendicular to said axis, and comprise an outward protrusion or a step of said terminal. The terminal may include a retaining lance engageable with one side of an inner projection of said chamber, the other side of said projection being engageable by one of said abutments.


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