Crimp connector with uniform bending die

Details Crimp connector with uniform bending die Crimp connector with uniform bending die

2001-03-02

2001-12-25

Ta, Tho D. (Department: 2833)

Electrical connectors

With insulation other than conductor sheath

Metallic connector or contact secured to insulation

C439S870000

Reexamination Certificate

active

06332814

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a crimp connector wherein a crimp contact is inserted forwards into a contact slot from the backside thereof.
FIG. 1
is a sectional view of a conventional crimp connector disclosed in Japanese Utility Model Provisional Publication No. 29748/95. The connector has such a structure that an electric wire is first crimp-connected onto a crimp contact
3
inserted in a connector housing
1
and then the crimp contact is set in an outer housing
4
. In this conventional crimp connector, in order to join the crimp contact
3
on to the connector housing
1
without being drawn out, adopted is such a means that a flexible lance
5
is disposed on a wall defining a contact slot
2
and the crimp contact
3
is fixed in order not to be drawn out backward by means of linking the lance
5
to a recess
6
of the crimp contact
3
making use of deflectional deformation of the lance.
However, in the case of joining the crimp contact
3
without being drawn out with the flexible lance
5
, due to the necessity of a deflection space/clearance space for the lance
5
, an unfavorable clearance is liable to occur and a large clearance may make the crimp contact
3
movable back and forth resulting in degradation of contact reliability of a contact portion connected with a coupling connector. Further, as shown in
FIG. 2
, when an electric wire is crimped with a crimp punch
7
, because of misalignment between a channel portion
8
of the crimp punch
7
and a crimp blade
9
of the crimp contact
3
, the crimp punch
7
is likely to interfere unsuitably with the crimp blade
9
resulting in a crimp failure.
SUMMARY OF THE INVENTION
According to the crimp connector of the present invention, since a protrusion formed on the crimp contact is bent after having inserted the crimp contact into a contact slot, the crimp contact can be surely fixed to the proper position. Therefore, not only can contact reliability be enhanced in the case of being connected with a coupling connector, but also a misoperation can be excluded during crimp-connecting an electric wire with a crimp punch. Moreover, since a receiving stand which is an integral part of a connector housing can be utilized during bending a protrusion, a shape of the bent protrusion may be uniform, holding force of the crimp contact may be increased, and any chance of a fracture by unusual deformation can be eliminated.


REFERENCES:
patent: 5314358 (1994-05-01), Klemmer et al.
patent: 5458426 (1995-10-01), Ito
patent: 5711067 (1998-01-01), Jenner et al.
patent: 7-29748 (1995-06-01), None

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