Card edge connector

Details Card edge connector Card edge connector

2001-12-28

2003-04-15

Bradley, P. Austin (Department: 2833)

Electrical connectors

Having circuit interrupting provision effected by mating or...

C439S140000

Reexamination Certificate

active

06547577

ABSTRACT:

TECHNICAL FIELD
The present invention relates to a card edge connector.
BACKGROUND TO THE INVENTION
FIGS. 47 and 48
of this specification show a card edge connector
100
which is described in JP 56-136480. An anterior face of the card edge connector
100
is provided with a base plate insertion hole
102
into which an end of a base plate
101
can be inserted. The interior of the card edge connector
100
has a pair of terminal fittings
104
which are provided with resilient contacts
103
, and which are located symmetrically on either side of the base plate insertion hole
102
. The distance L separating the two resilient contacts
103
is less than the thickness M of the base plate
101
. When the base plate
101
has been attached to the card edge connector
100
, the two resilient contacts
103
resiliently grip the base plate
101
while making contact with thin film-like terminals
105
provided on both faces of the base plate
101
.
In this card edge connector
100
, the contacting resistance between the terminal fittings
104
and the terminals
105
is stabilised by increasing the contacting force between the resilient contacts
103
and the terminals
105
. If the resilient contacts
103
are caused to bend to a greater degree in order to achieve this aim, the distance L therebetween decreases. As a result, these upper and lower resilient contacts
103
may be more likely to make mutual contact before the base plate
101
is attached, thereby causing a circuit (not shown) of the card edge connector
100
to short circuit.
The present invention has taken the above problem into consideration, and aims to present a card edge connector wherein terminal fittings are not short circuited.
SUMMARY OF THE INVENTION
According to the invention there is provided a card edge connector comprising a housing having a slot adapted to receive the edge of a card having surface contacts, and opposed resilient terminals within said slot for contact with said surface contacts, said connector further including short circuit preventing member of electrically insulating material, said preventing member being movable from an advanced position between said opposed terminals to a retreated position not between said opposite terminals.
Preferably the preventing member is movable by direct contact with a card edge connector inserted into said slot.
Such an arrangement reliably prevents short-circuiting of the opposed terminals, and accordingly these terminals can be given an increased contact force so that a reliable engagement of the card edge contacts is assured.
In a preferred embodiment the preventing member is latchable in the advanced and retreated positions, and may be entrained for movement with a card edge connector between predetermined limits. The latter feature ensures that the preventing member is returned to the advanced condition should the connector be separated from the contacts of a card edge.


REFERENCES:
patent: 4815895 (1989-03-01), Purssey et al.
patent: 5160275 (1992-11-01), Nakamura et al.
patent: 35354 (1984-08-01), None

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