TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

Tesla charging plug lock

Discussion in 'Roadster: Technical' started by dwegmull, Sep 13, 2011.

  1. dwegmull

    dwegmull 2013 Model S 85

    Joined:
    Oct 8, 2009
    Messages:
    238
    Location:
    Redwood City, California
    With the J1772 adapter an easy target for thieves, I decided to make a lock that would prevent its removal from the car.
    I put it together in a few hours, so it's not pretty but gets the job done. I think a much nicer version could be made using water jet parts...
    It is made of 1/2" by 1/8" steel flat bar shaped to fit around the plug. A small piece of steel is welded inside the ring to fit in the area where the slide switch needs to go in order to remove the plug from the car. The hinge is made from three pieces of 1/8" thick plate along with a 1/4" diameter pin. The padlock holder is of similar construction. SInce I took those picture, I've painted it in a silver metal flake color (rattle can spray job, looks good from six feet away :wink:)

    IMAG0942.jpg
    IMAG0943.jpg
    IMAG0946.jpg
    IMAG0947.jpg

    Would anyone be interested in a "production" version of such a lock? By that I mean a set of CAD drawings to get parts cut. Some welding or riveting would still be needed.
     
  2. zack

    zack Member

    Joined:
    Nov 15, 2010
    Messages:
    946
    Location:
    Minneapolis, MN
    I love it. I'd go for it.
     
  3. bonnie

    bonnie Oil is for sissies.

    Joined:
    Feb 6, 2011
    Messages:
    14,241
    Location:
    Columbia River Gorge
    count me in.
     
  4. Nvbob

    Nvbob Roadster 1256

    Joined:
    May 6, 2009
    Messages:
    229
    Location:
    Just east of Lake Tahoe, Ca.
    We're interested, also.
     
  5. dwegmull

    dwegmull 2013 Model S 85

    Joined:
    Oct 8, 2009
    Messages:
    238
    Location:
    Redwood City, California
    OK, I will start designing a lock that is easier to duplicate (It's already "done" in my head ;-)). For those of you in the SF Bay Area, I will be at the EV show and rally in Palo Alto this coming Saturday (EV Rally). I will bring the lock with me for show and tell.
     
  6. Tommy

    Tommy Member

    Joined:
    Mar 3, 2010
    Messages:
    880
    Location:
    The great OC
    Can a pair of handcuffs be modified? The prototype lock looks very much like 1/2 of a pair of handcuffs.
     
  7. doug

    doug Administrator / Head Moderator

    Joined:
    Nov 28, 2006
    Messages:
    15,914
    Location:
    Stanford, California
    You looking for a dual purpose device?
     
  8. richkae

    richkae VIN587

    Joined:
    Jan 15, 2008
    Messages:
    1,917
    If I had the ability to craft such a device - I would do the following:
    Remove the slider and replace it with a new one - The new slider would have a small keyhole that operates a cam that fills that void - extending the length of the slider so that it can not move. The new slider could be taller than the old one to make room for the lock mechanism, but it would still be compact and entirely self contained.
     
  9. zack

    zack Member

    Joined:
    Nov 15, 2010
    Messages:
    946
    Location:
    Minneapolis, MN
    Speaking of... all a trouble-causer needs is a philips screwdriver to remove the slider even if the lock is in place. Hmm. I think that you've revealed the answer, richkae. The slider itself should be replaced with an alternate device and the screw that holds it in place should be an anti-theft type.
     
  10. NigelM

    NigelM Recovering Member

    Joined:
    Apr 3, 2011
    Messages:
    13,257
    Location:
    Sarasota, FL
    Just make the cuff that dwegmull designed wider so the slider can't be lifted up.
     
  11. vfx

    vfx Well-Known Member

    Joined:
    Aug 18, 2006
    Messages:
    14,792
    Location:
    CA CA
    Something that simple and low profile could just ride on the connector (attached permanently). Only the lock would come off. Even that could be attached to the mechanism with enough thought behind it.
     
  12. richkae

    richkae VIN587

    Joined:
    Jan 15, 2008
    Messages:
    1,917
    If you look at the screw that holds the slider - it is an anti theft type - it is the 6 pointed star with a pin in the middle.
     
  13. richkae

    richkae VIN587

    Joined:
    Jan 15, 2008
    Messages:
    1,917
    Also, if you remove the slider, I don't think you can disengage the connector from the car. You need to slide it back before it will rotate.
     
  14. vfx

    vfx Well-Known Member

    Joined:
    Aug 18, 2006
    Messages:
    14,792
    Location:
    CA CA
    Exactly!
     
  15. dwegmull

    dwegmull 2013 Model S 85

    Joined:
    Oct 8, 2009
    Messages:
    238
    Location:
    Redwood City, California
    A replacement slider with a built-in lock is an intriguing idea... I will look around for a suitable lock. Maybe I can throw a prototype together.

    Even with the security screw removed, the slider does not just come out: it needs to be lifted and slid out. I think my lock prevents such a motion, but I will borrow the right screwdriver from work and check. It would not be very hard to weld a "tongue" to the lock that would cover most of the slider.
     
  16. vfx

    vfx Well-Known Member

    Joined:
    Aug 18, 2006
    Messages:
    14,792
    Location:
    CA CA
    tm!













    ...



    and C.
     
  17. zack

    zack Member

    Joined:
    Nov 15, 2010
    Messages:
    946
    Location:
    Minneapolis, MN
    Ahh. Mine was in the garage and I didn't look at it. Foresight on Tesla's part. 8^D
     
  18. vfx

    vfx Well-Known Member

    Joined:
    Aug 18, 2006
    Messages:
    14,792
    Location:
    CA CA
    #18 vfx, Sep 19, 2011
    Last edited: Sep 21, 2011
  19. dadaleus

    dadaleus 4GETOIL P85#S70,FdrX,S85D

    Joined:
    Aug 27, 2009
    Messages:
    884
    Location:
    Solana Beach, California, United States
    If one of you decide to have one of these made, I'll love to pay for a second one.
     
  20. dwegmull

    dwegmull 2013 Model S 85

    Joined:
    Oct 8, 2009
    Messages:
    238
    Location:
    Redwood City, California
    Well, I tried removing the security screw with my original lock in place: the slider can be removed and the plug is then free from the car.
    As a quick fix, I welded a plate that covers the slider completely.
    IMAG0973.jpg

    A lock that is integral to the plug and replaces the slider would be the cleanest solution for sure but it would require some intricate machining. I will keep on tinkering with it...
     

Share This Page