I have decided on my final design, of course I will still try to improve it as I get into modelling it etc but I am happy that it will work well and function in the way that it has been designed.
The parts that I have incorporated into my design are:
1. Deadlock Mechanism - The reason I have chosen this form of lock is because it
is simple and very effective. The internal mechanism also allows me to create
electrical contacts easily due to it's simplicity.
2. Smart Key - The key for this lock will have a computer chip inside it so that the
lock will recognise the individual key. This means that the lock will be very
resistant to picking as the chip will be needed.
3. Vertical Bolts - There are 2 vertical bolts in my mechanism. This is so that the
door will be much more resistant to someone trying to jimmy it open.
4. Car Door Popper Solenoid - This is the most innovative part of my design.
These poppers are used in car doors but I have looked extensively on the
internet and have been unable to find them used in this application. Once the
key is turned in the door there will be a contact in the internal locking
mechanism. This contact will push out the solenoid which will open the door a
little for the old person to easily be able to push it. Once the barrel of the lock is
turned back (which will be required to remove the key from the door) the
contact inside the barrel will be broken causing the solenoid to retract again,
allowing the door to close.
Using this design will help an old person immensely as the door will not jam on them. This lock will significantly lessen the work that will need to be done by the user.