Articulating interlocking structural extrusions for recreational vehicles and the like

A method of locking a vehicle wall to a vehicle floor, comprising:

• providing a wall having a wall articulating locking means;
• providing a wall support affixed to the vehicle floor, the wall support having a wall support articulating locking means;
• positioning the wall at an angle relative to vertical and such that the wall articulating locking means partially engages the wall support locking means;
• tilting the wall upright into a generally vertical position, the wall articulating locking means increasingly engaging the wall support locking means as the wall is tilted upright to lock the wall to the wall support.

An assembly for connecting a wall of a vehicle to another member of the vehicle, comprising:

• a first member having a generally vertical protrusion;
• a second member having a generally vertical recess for receiving the protrusion, the recess and the protrusion cooperatively engaging to prevent horizontal movement between the first and second members;
• and
• a keeper;
• wherein:
• the first member has a first feature defining a first generally horizontal surface;
• the second member has a second feature defining a second generally horizontal surface;
• the keeper has features defining a third generally horizontal surface and a fourth generally horizontal surface, the keeper being slid generally horizontally into an engagement position with the first and second horizontal surfaces to prevent relative vertical movement of the first and second members;
• whereby the first and second members are prevented from relatively moving both horizontally and vertically.