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    Electromechanical hammerhead c02 inflator

    Hi

    In everything from softguns to inflatable life jackets you have those Co2 cartridges that comes in various size and CO2-weight. I want to use these in a new design but need an actuator that is able to puncture the cartridge using an electrical controlled hammerhead. So far I have only found mechanical actuators for manual use. On ebay I have found some regulators, but I do not want too regulate the gas flow as I need the gas to leave the cartridge instantaneous much like it does in the inflatable life jackets, into a tube leading the gas to its destination.

    Problem is that i do not know what to call them in english so I do not know the correct search term, I'm even not sure if "Hammerhead" is the right term or if that is a brand or something. Most search hits is related to CO2 regulators for fish tanks and thats not what i want.

    I hope some of you know off any such devices. It would also be a benefit if the actuator has manual release as well, but that may be achieved other ways.

    •   Alt26th March 2017, 15:29

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    Re: Electromechanical hammerhead c02 inflator

    Hi,

    This article about emergency bicycle tyre repairs mentions flow control unit and control valve, probably not the term you are looking for. You don't mean a solenoid as the driving device to puncture the cartridge? No doubt whatever is needed for a pneumatic drill/hammer would be too many parts taking up too much space for what you intend.



    •   Alt26th March 2017, 22:45

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    Re: Electromechanical hammerhead c02 inflator

    It could be efficient to have a spring-loaded needle, which is held back by a catch of some kind. Flip the catch away with an electromagnet. It should be possible to do with less force than if you try to drive the needle from a solenoid exclusively.



    •   Alt27th March 2017, 02:12

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    Re: Electromechanical hammerhead c02 inflator

    Thanks it gives me some ideas. It seems that I have to invent the wheel in this case, but in the age of 3D printers that might not be a to big deal...
    This pages also gives me some input to mechanics, even though it has nothing to do with my case

    https://www.scribd.com/document/8386...cal-Mechanisms



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    Re: Electromechanical hammerhead c02 inflator

    For the info. The solution i think will be to kinda rapidly drill a (maybe hollow) needle/arrow into the canister using a small electrical motor and a gear. I do not know the correct English term but it will use some type of "thread-screw" that is pushed by the gear in a linear move into the canister.

    (what is the correct English term for these screws that is used to translate the motors rotation based movement into linear movement)

    - - - Updated - - -

    Hup.. got it... Worm-gear or worm-drive. (Who the heck came up with that name?)
    Last edited by zainka; 25th April 2017 at 22:05.



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