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Electric Deadbolt Lock for Fence Wicket—Pulse-Activated Open/Close Mechanism Recommendations

dominator1982 3714 12
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  • Helpful post
    #1 16595687
    dominator1982
    Level 12  
    I am looking for a device that will fulfil the role of an electric lock for a wicket in a fence. Specifically I am referring to locking the wicket at night. The wicket is to be unsecured during the day, but locked at night. The control issue does not play a role for me. I have a smart installation in the house (all on PLC) and the wires to the wicket are pulled. The problem is that I don't want/can't use a standard electric strike. I could do this by keeping the electric lock live during the day - but this is not the most accurate solution. I'm looking for something along the lines of a car lock. Gives a pulse the deadbolt closes. Gives another pulse the deadbolt opens.

    If you have a lead on this type of deadbolt let me know.
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  • Helpful post
    #2 16595874
    czareqpl
    Level 33  
    Look for "bistable electromagnet" in the various products.
    You can use it to advance the spindle with a + - pulse and withdraw it with a -+ pulse. You don't have to keep voltage on it all the time.

    These standard gate locks work in a similar way, only they have a built-in spring that pushes the pin out when the voltage is lost.

    For 12V, you'll find a ready-made solution in older HP desktop computers. This was used to lock the case from opening.
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  • #4 16596202
    Zbigniew 400
    Level 38  
    There are programmable electric door openers. You move the lever and it's open all the time.
    With other solutions you have provided for emergency opening?
    I have a deadbolt, but a large one.
  • #6 16596618
    Zbigniew 400
    Level 38  
    I wish you luck in the event of a bolt or winding failure.
  • #7 16597053
    PEPE64
    Level 16  
    @Zbigniew 400, everything breaks down, but you have to make some compromises. Surely a better idea than keeping the electric door opener live all day.
  • #8 16597068
    Zbigniew 400
    Level 38  
    Then I guess you need to read up on how electric door openers work.
    Who said you have to keep it live all day.
    See post 4.
  • #9 16597142
    mawerix123
    Level 39  
    PEPE64 wrote:
    Surely a better idea than keeping the electric door opener live all day.


    And what's the problem :?: I have fitted many reversing strikers to emergency doors and they still work today. These electric strikes are designed for continuous operation.
    Example: http://elektrozaczep.pl/?pl_rozam-elektrozaczepy-rewersyjne,30
  • #10 16597343
    PEPE64
    Level 16  
    @Zbigniew 400, mawerix123, thanks for the info. Things have changed a bit and I wasn't up to date on the topic. I was taking dominator1982's suggestion of a standard electric door opener.
  • #12 16615522
    dominator1982
    Level 12  
    Gentlemen. Doesn't the solenoid from the link above sometimes need to be controlled by feeding it in reverse each time, i.e. once plus minus (forward movement) then in reverse on the ninus plus terminals (reverse movement)?
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  • #13 16615814
    kot mirmur
    Level 33  
    From the description, it appears that it does. As in central locking.
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Topic summary

The discussion focuses on finding an electric deadbolt lock for a fence wicket that operates via pulse-activated open/close commands, similar to automotive central locking systems. The ideal device should not require continuous power to hold the lock state but instead use a bistable mechanism that advances or retracts the bolt with alternating polarity pulses. Suggestions include using bistable electromagnets or solenoids that move the spindle forward or backward depending on the pulse polarity, eliminating the need for constant voltage. A practical example referenced is a 12V bistable solenoid used in older HP desktop computer case locks. Programmable electric door openers and reversible electric strikes designed for emergency doors were also mentioned as alternatives, with some users noting their reliability in continuous operation. The author shared a purchased product from Conrad (link provided) requiring a custom bolt adaptation. The need to control the solenoid by reversing polarity for opening and closing was confirmed, aligning with central locking principles.
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