ZIF-ish connector...

[Don Y]

On 7/18/2020 5:32 AM, Chris Jones wrote:
> I saw mikeselectricstuff using SIM card connectors:

That\'s an idea worth pursuing -- though I wonder if SIM card connectors
are designed for many mating cycles (?)

Thanks!

[I may, actually, be able to use something like that to repair a bit of kit
that I have lying around, here -- mangled pins!]

 

[Don Y]

On 7/19/2020 3:35 AM, Tim Williams wrote:

\"Don Y\" <blockedofcourse@foo.invalid> wrote in message
news:rf0slc$843$1@dont-email.me...

But, despite its ubiquity, it seems like it is almost always a \"custom\"
related to the actual device implementation. The only a la carte approach
that I could think of was pogo pins (from test fixture clamshells)

Well no, if these aren\'t \"from a menu\" I don\'t know what is?--

Have you ever SEEN a product deployed with these? There are many products
that USE a mechanism of this sort (\"despite its ubiquity\") but, \"it seems like
it is almost always a \'custom\' related to the actual device implementation\".

I\'ll see if I can make any of them work in a prototype and likely have to
rely on incorporating the concept directly into the case design. It can\'t
be \"rocket science\" so I imagine I can find an ME who can sort out the
proper shapes and material characteristics for maximal reliability and
durability.

Not cheap, mind; but, as you didn\'t specify a cost target, I\'m going to say my
job is done here. :^)

[my pogo pins approach was \"too expensive\"]

For pretty much anything consumer (\"intended for consumer market\"), you\'d
expect cost to be a significant factor. The connectors I mentioned (elsewhere
this thread) were ~$30. But, in a $10K product, that cost disappears.

OTOH, the \"ubiquitous\" use of this feature always seems to be encountered
in INexpensive products; cases where clearly \"sexier\" (appeal to consumer)
implementations would be more marketable (e.g., contactless charging and
data transfer).

[I\'ve already ruled that out based on cost -- as I suspect most other
consumer designs have. We\'re starting to see it, now, with some phones;
but, they\'re operating at a point where they just \"pay for the plastic\"]

(mechanical stuff is a PITA) Thanks!

 

[Don Y]

On 7/19/2020 6:30 AM, Clive Arthur wrote:

Maybe some ideas here...

https://www.youtube.com/watch?v=Euz00E3otlQ

I don\'t think I can use them (too small/fine) but
I\'m going to look into buying some for some of my
personal kit!

Thanks!

 

[Don Y]

On 7/18/2020 5:04 AM, Jasen Betts wrote:

On 2020-07-18, Don Y <blockedofcourse@foo.invalid> wrote:
On 7/17/2020 11:18 PM, Jasen Betts wrote:

The ring connector on cordless electric jugs?

\"cordless electric jugs\"???

English language problem jug(UK) = pitcher(US) but I think you guys
call these kettles?

these things:
https://1yhvlp3b86v14bfm843cm6oc-wpengine.netdna-ssl.com/wp-content/uploads/2011/12/chefs-choice-electric-kettle.jpg

the top part has tri-axial terminals (a pin and two cylindrical shells and the botom part has
recessed spring-loaded contacts for live, neutral, and earth that press up on
the contacts

<https://www.amphenolpcd.com/sites/default/files/downloads/Stingray%20Catalogue%20May%202018.pdf>

 

[server]

On Sat, 1 Aug 2020 07:08:37 -0700, Don Y <blockedofcourse@foo.invalid>
wrote:

On 7/18/2020 5:04 AM, Jasen Betts wrote:
On 2020-07-18, Don Y <blockedofcourse@foo.invalid> wrote:
On 7/17/2020 11:18 PM, Jasen Betts wrote:

The ring connector on cordless electric jugs?

\"cordless electric jugs\"???

English language problem jug(UK) = pitcher(US) but I think you guys
call these kettles?

these things:
https://1yhvlp3b86v14bfm843cm6oc-wpengine.netdna-ssl.com/wp-content/uploads/2011/12/chefs-choice-electric-kettle.jpg

the top part has tri-axial terminals (a pin and two cylindrical shells and the botom part has
recessed spring-loaded contacts for live, neutral, and earth that press up on
the contacts

https://www.amphenolpcd.com/sites/default/files/downloads/Stingray%20Catalogue%20May%202018.pdf

Nice idea. A mated pair from Digikey costs about $300.



--

John Larkin Highland Technology, Inc

Science teaches us to doubt.

Claude Bernard

 

[Don Y]

On 8/1/2020 9:56 AM, jlarkin@highlandsniptechnology.com wrote:

On Sat, 1 Aug 2020 07:08:37 -0700, Don Y <blockedofcourse@foo.invalid
wrote:

On 7/18/2020 5:04 AM, Jasen Betts wrote:
On 2020-07-18, Don Y <blockedofcourse@foo.invalid> wrote:
On 7/17/2020 11:18 PM, Jasen Betts wrote:

The ring connector on cordless electric jugs?

\"cordless electric jugs\"???

English language problem jug(UK) = pitcher(US) but I think you guys
call these kettles?

these things:
https://1yhvlp3b86v14bfm843cm6oc-wpengine.netdna-ssl.com/wp-content/uploads/2011/12/chefs-choice-electric-kettle.jpg

the top part has tri-axial terminals (a pin and two cylindrical shells and the botom part has
recessed spring-loaded contacts for live, neutral, and earth that press up on
the contacts

https://www.amphenolpcd.com/sites/default/files/downloads/Stingray%20Catalogue%20May%202018.pdf

Nice idea. A mated pair from Digikey costs about $300.

Oh, you noticed that, too? :> (at first, I thought it was a \"case price\";
then reminded myself \"Amphenol...\")

Still, cute little connectors if some fell into my lap!

 

[Joe Gwinn]

On 03 Dec 2020 16:40:33 GMT, albert@cherry.(none) (albert) wrote:

In article <retj4j$j0j$2@dont-email.me>,
Don Y <blockedofcourse@foo.invalid> wrote:
I\'m looking for a connector that can be mated blind with no insertion force.
Sort of like LAYING a PCB onto a set of pogo pins (but they are too expensive
and not very robust).

Contacts will need to pass ~500mA (though I can be argued into lesser amounts).

And, I only need a handful of conductors (4-8).

Gold plate, likely, as I don\'t want to deal with corrosion or high resistance
connections.

[Unfortunately, I can\'t think of a consumer product that I could point to
as an example... most seem to have \"real\" connectors. Cost and \"robustness\"
are issues as it is intended for the consumer market.]

The morse cone on a bench press require no force to put in, and

Morse *taper*.

the slightest pressure will have them remain in place.
This would suggest banana type connectors with a 1:5 slope.
Grinding them together (like the valves in an engine) would make for
insanely low contact resistance.
(I worked at a factory for high voltage, high current equipment. The
guy on the lathe next to me produced contacts of massive 25 mm copper
with a head that could withstand sparks, then silver plated over 150
mm . The mating connectors were probably cilindrical with a tigh high
precision fit.)

Taper-pin connectors made of solid brass have been around forever.
Miller welders have plug and socket connectors to plug the welding
cables into the welder output.

I presume you don\'t want a \"zero come loose force\", lest a passing truck
would be fatal.

If they are made right, they don\'t randomly fall out - the taper angle
is self-locking.

Joe Gwinn

 

[none]

In article <retj4j$j0j$2@dont-email.me>,
Don Y <blockedofcourse@foo.invalid> wrote:

I\'m looking for a connector that can be mated blind with no insertion force.
Sort of like LAYING a PCB onto a set of pogo pins (but they are too expensive
and not very robust).

Contacts will need to pass ~500mA (though I can be argued into lesser amounts).

And, I only need a handful of conductors (4-8).

Gold plate, likely, as I don\'t want to deal with corrosion or high resistance
connections.

[Unfortunately, I can\'t think of a consumer product that I could point to
as an example... most seem to have \"real\" connectors. Cost and \"robustness\"
are issues as it is intended for the consumer market.]

The morse cone on a bench press require no force to put in, and
the slightest pressure will have them remain in place.
This would suggest banana type connectors with a 1:5 slope.
Grinding them together (like the valves in an engine) would make for
insanely low contact resistance.
(I worked at a factory for high voltage, high current equipment. The
guy on the lathe next to me produced contacts of massive 25 mm copper
with a head that could withstand sparks, then silver plated over 150
mm . The mating connectors were probably cilindrical with a tigh high
precision fit.)

I presume you don\'t want a \"zero come loose force\", lest a passing truck
would be fatal.

advTHANKSance!

--
This is the first day of the end of your life.
It may not kill you, but it does make your weaker.
If you can\'t beat them, too bad.
albert@spe&ar&c.xs4all.nl &=n http://home.hccnet.nl/a.w.m.van.der.horst