Hello,
I am looking for the name of this electronical component that looks like a piston (see picture). It is an electronical pull out ring and i can’t find the name of it. Can someone help me ? Thanks in advance.

 

If that silver pulls in and out, then I think it is a solenoid.
https://www.tlxtech.com/articles/solenoid-101-what-is-a-solenoid

 

What did the device do before it was opened (or supposed to do)?

 

Is it a switch that activates when pulled?

 

Is it a switch that activates when pulled?

Yes exactly, it activates an alarm, and i havé attached a picture of it pulled out

 

What did the device do before it was opened (or supposed to do)?

It triggers a speaker when the metal part is pulled out

 

If that silver pulls in and out, then I think it is a solenoid.
https://www.tlxtech.com/articles/solenoid-101-what-is-a-solenoid

Thanks for the answer but i think it is a simpler mechanism. I think it is triggered by the metal part that open a circuit when pulled out but without any magnetic field...

 

Ok it’s a pull switch, no clue where you’re going to find that piece. What’s it for?

 

I would guess a standard small jack connector with a "custom contact pin"

 

I would guess a standard small jack connector with a "custom contact pin"

hey that’s clever, that might be it

 

Are a spring and keeper missing so it doesn't fall apart?

By keeper, I mean something like an E-clip (aka Jesus clip) that fits in the groove at the very end and keeps it from falling all the way out:


You seem to describe a metal pedal that activates the plunger, which activates or opens the switch contacts (e.g, reduced diameter allows switch to open).

 

Ok it’s a pull switch, no clue where you’re going to find that piece. What’s it for?

It triggers an alarm when the metal part is pulled out, like a « sound grenade »

 

I would guess a standard small jack connector with a "custom contact pin"

Are a spring and keeper missing so it doesn't fall apart?

By keeper, I mean something like an E-clip (aka Jesus clip) that fits in the groove at the very end and keeps it from falling all the way out:
View attachment 227753

You seem to describe a metal pedal that activates the plunger, which activates or opens the switch contacts (e.g, reduced diameter allows switch to open).

Yes, you need to pull quite hard to get it out so I think something is blocking it to avoiding falling.

 

Here's what a E-ring clip looks like:

 

Ah an electronic noise claymore, fun, so it’s a security device.

 

Looks like a standard 1/8” jack with a contact and a custom milled “plug”. The jack would prevent the plug from being pulled out just like a headphone plug.

 

What my take is that it's a trip wire plunger. If you pull it out it sets off an alarm. To reset it the device has to be opened and the pin put back in to silence the alarm. It's not electrical at all. It's just a pin that isn't easily reset by an unsuspecting victim who triggers the alarm.

 

I think this is only a mechanical push-pull switch, I am not assure that this one same is available or not but you can find similar on google.
because some of the companies manufacture their own components for the particular products and don't sale them.

 

Here's

I think this is only a mechanical push-pull switch, I am not assure that this one same is available or not but you can find similar on google.
because some of the companies manufacture their own components for the particular products and don't sale them.

ok thanks

 

Back in the 90's at Traders Village in Houston TX I bought some door alarms that had an alarm unit and a plunger on a string. Open the door (or window or a string across the floor where a foot could snag it) and the string would pull the plunger out and set off the alarm. A burglar would not stop and take the time to figure out how to silence the alarm, especially if the pin was difficult to find. The home owner could take the time to reinsert the pin and thus silence the battery powered alarm.