linear actuator?

more data please. a 7" lcd is pretty small. there ought to be a bunch
of possible solutions to your need.

does it need to be decorative?
how much travel do you require?
how must it be activated?
what are you building?

mebbe a spring loaded hinge, blum self closer type?

An electric door lock actuator for an automobile.


"Matt" <[email protected]> wrote in message
news:[email protected]...
> im looking for something to use to push up one end of a 7" LCD display and
> i thought id use a linear actuator. Only problem is that all the linear
> actuators I look at are huge, push 1000 pounds, and go way too far. Is
> there anything else i could use that is small and inexpensive to get the
> job done?
>

"Matt" wrote:

>im looking for something to use to push up one end of a 7" LCD display and
>i thought id use a linear actuator. Only problem is that all the linear
>actuators I look at are huge, push 1000 pounds, and go way too far. Is
>there anything else i could use that is small and inexpensive to get the
>job done?

Years ago there was a line of small automation type cylinders that would
work if they are still made.

They were 1" bore, some used a spring to extend the rod, then you would
pressurize the rod end to retract the rod.

There were lots of other options but I have been away this kind of stuff
for a long time.

HTH

Lew

On Fri, 08 Jul 2005 03:38:29 GMT, the opaque "Matt"
<[email protected]> clearly wrote:

>im looking for something to use to push up one end of a 7" LCD display and i
>thought id use a linear actuator. Only problem is that all the linear
>actuators I look at are huge, push 1000 pounds, and go way too far. Is
>there anything else i could use that is small and inexpensive to get the job
>done?

"Small" + "inexpensive" should never be used with "linear", Matt. ;)

Forget Leon's solenoid idea. It has a <1" range and is instantaneous,
far too quick for raising that much mass even if it could.

Try www.surpluscenter.com , search for "linear". For $35, the
#5-1437 looks like it'd work for you with a rail/lever system.
Try again next week and there may be more to choose from.

It takes Burden -days- to ship, so plan on 7-10 days overall, UPS.


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"Matt" <[email protected]> wrote in message
news:[email protected]...
> im looking for something to use to push up one end of a 7" LCD display and
i
> thought id use a linear actuator. Only problem is that all the linear
> actuators I look at are huge, push 1000 pounds, and go way too far. Is
> there anything else i could use that is small and inexpensive to get the
job
> done?
>
Grainger has light duty electric linear actuators, I used one in a similar
circumstance.......mjh

"Matt" <[email protected]> wrote in message
news:[email protected]...
> im looking for something to use to push up one end of a 7" LCD display and
i
> thought id use a linear actuator. Only problem is that all the linear
> actuators I look at are huge, push 1000 pounds, and go way too far. Is
> there anything else i could use that is small and inexpensive to get the
job
> done?
>
>

The actuator I got from Graingers is shown on my web page
http://www.members.tripod.com/mikehide2/ . Look under desks and check the
large desk with the leather paneled top . there is a shot of the elevator
mechanism I built , the electric actuator is clearly shown in the center.
The linear actuator has an electric motor which drives a screw jack with
about 12 + inches of travel if I recall....mjh

Matt (in [email protected]) said:

| im looking for something to use to push up one end of a 7" LCD
| display and i thought id use a linear actuator. Only problem is
| that all the linear actuators I look at are huge, push 1000 pounds,
| and go way too far. Is there anything else i could use that is
| small and inexpensive to get the job done?

How about using a small gearmotor to drive an allthread leadscrew with
limit switches at the extremes of movement?

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/solar.html