There used to be an edge connector like this, I used it on a PBX project back in the 80's. It was called a Ziff connector -- don't now the mfg but here is something similar:
http://www.te.com/catalog/bin/TE.Connect?C=10115&M=PPROP&P=&BML=10576,10111&LG=1&PG=1&IDS=15165,15166,15183,15163,63947,64045,64048,64049,64044,15184,15172,15176,64161,64148,64150,64151,64153,64154,64157,64158&N=1You could get them in different lenths and like you say have one on the top and a second one on the bottom of the PCB. We wer trying to do hot swap with them as well.
They had one major issue --- they didn't always make good contact, you could have no warpage in the board and we ended up needing stiffiners near both edges. And the big one for edge fingers; there was no or very little wiping action on the contact area. Thus new board worked fairly well but as the connector and fingers aged we had a lot of trouble with open contacts.
There was a cam lever on the end of the connector you would turn 90 degrees to retract the contacts out of the way. Then you could insert (slide) the PCB in or out the end of the connector. Once the PCB was in position the key was turned 90 degrees back to release the contacts onto the board.
We were finally forced to design it out of the product because of the contact reliability.
Craig
--- In Homebrew_PCBs@yahoogroups.com, David Bobb <dave.bobb@...> wrote:
>
> By sliding lengthwise, imagine you are installing a peripheral card into
> your computer, PCI, ISA, AGP, PCI-E; doesn't matter. Instead of pushing it
> in from the top of the connector, say the end of the connector that faces
> the back of the computer was open and instead of having to take the side
> off the computer to install this card, you could just slide it in from the
> back. Then the first finger would actually come in contact with the mating
> surface for the last finger at first then be slid past all the other
> contacts before coming in contact with its mating contacts at the end of
> the cards travel.
>
> You wouldn't easily be able to hot swappable with this design, but I'm not
> trying to right now either.
> On Jul 15, 2012 4:13 PM, "James Newton" <jamesmichaelnewton@...>
> wrote:
>
> > ∗∗
> >
> >
> >
> >
> > --- In Homebrew_PCBs@yahoogroups.com, "davesversion" <dave.bobb@>
> > wrote:
> > >
> > > Has anyone seen any kind of dual card edge mounting that would slide in
> > lengthwise?
> > >
> >
> > I'm not sure what you mean by "slide in lengthwise".
> >
> > There are lots of connectors that can be used on the edge of card, and
> > where the card can be slid into a slot where the connector mates at the
> > back. The old standard for that was card edge, where there was a connector
> > on the "mother" board at the back of the slots, and the edge of the PCB
> > just slides into that connector. You can still find that type on floppy
> > drives. The problem with them is that they are notoriously unreliable. They
> > were used on Nintindo game cartridges if that tells you anything. ,o)
> >
> > I've used DB9 and DB25 solder tail connectors with the PCB wedged in
> > between the rows of connectors:
> >
> > http://www.piclist.com/techref/io/serial/RCL1.htm (scroll down a bit for
> > a picture of the board)
> >
> > http://www.ecomorder.com/techref/ecomprice.asp?p=416012
> >
> > In those cases, it isn't sliding into a slot, but I've seen that done
> > before and it works pretty well. Male on one side and female on the other
> > side. E.g. the Male on the card edge and the female at the back of the slot.
> >
> > You can also use standard 1/10 headers on the edge of a card, and there
> > are female connectors that can mount thought hole on the mother board. Have
> > to have a really tight slot to align those.
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>