Articulating interlocking structural extrusions for recreational vehicles and the like

1. A structural assembly for a vehicle wall comprising:

a first structural member, the first structural member having a tongue extending therefrom, the tongue having a tongue engagement feature comprising at least one of an angle, a curve, and a protrusion at a distal portion thereof;

a second structural member, the second structural member having a groove therein for receiving the tongue, the groove having a recess at a distal portion thereof;

wherein when the tongue is inserted into the groove, the recess in the distal portion of the groove engages the tongue engagement feature; and

a keeper configured to fit into gap formed between the first and second structural members; and

wherein the keeper does not adhere to the first and second structural members when in the gap.

2. The structural assembly of claim 1 wherein the tongue and the groove are configured such that in order to insert the tongue fully into the groove, the distal portion of the tongue is first inserted partially into the groove with the first and second structural members at a first angle relative to each other, and then the structural members are articulated with the tongue moving further into the groove as the structural members are articulated, until the tongue engagement feature is lockingly engaged by the recess in the groove when the structural members have reached a final angle relative to each other.

3. The structural assembly of claim 1 wherein:

the tongue is curved;

the groove is curved, the shape of the curved groove generally corresponding to the shape of the curved tongue; and

the curved tongue slides into the curved groove to be lockingly engaged thereby as the first structural member is rotated into a final position relative to the second structural member.

4. The structural assembly of claim 3 wherein the tongue and the groove are both generally J-shaped, and a curved bottom portion of the J-shaped tongue engages a curved bottom portion of the J-shaped groove to prevent the tongue from pulling out of the groove once the two structural members have been rotated into said final position.

5. The structural assembly of claim 3 wherein the curved groove is defined at least in part by:

a curved groove wall on a first side of the groove, the curved groove wall having an arc of about 90°, the curved groove wall having an uppermost extent at a first vertical level; and

a ledge on a second side of the groove opposite the first side, the ledge having an uppermost extent at a second vertical level lower than the first vertical level.

6. The structural assembly of claim 1 wherein the first structural member is a wall member and the second structural member is a floor member, and the wall member is tilted upright to lockingly engage the wall member with the floor member.

7. The structural assembly of claim 6 wherein the wall member defines a bottom wall member, and the assembly further comprises:

a plurality of wall studs welded to the bottom wall member;

a top wall member welded to the wall studs; and

foam material positioned between the wall studs.

8. The structural assembly of claim 1 further comprising:

the keeper that engages the first and second structural members to prevent the first and second structural members from relatively rotating, thereby holding the two structural members in a mutually locked position.

9. The structural assembly of claim 1 wherein:

the first and second structural members have respective surfaces that, when the structural members are engaged and locked together, are opposed from each other and form the gap therebetween; and

wherein the keeper fills the gap to prevent relative movement of the two structural members.

10. The structural assembly of claim 1 wherein the first structural member has an inwardly extending ledge for positioning and supporting an interior wall panel.

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

providing a wall having a wall articulating lock;

providing a wall support affixed to the vehicle floor, the wall support having a wall support articulating lock;

positioning the wall at an angle relative to vertical and such that the wall articulating lock partially engages the wall support lock;

tilting the wall upright into a generally vertical position, the wall articulating lock increasingly engaging the wall support lock as the wall is tilted upright to lock the wall to the wall support.

12. A wall and floor structural assembly comprising:

a wall having a rail adjacent a bottom edge thereof

a wall support having a support surface for supporting the wall, and a recess adjacent the support surface;

wherein the rail and the recess have complementary contoured shapes such that the wall member can be articulated relative to the wall support to engage the wall member to the wall support, the contoured shape of the recess engaging the complementary contoured shape of the rail to prevent the rail from being pulled directly upward away from the wall support when the wall is in a full upright position; and

a keeper that couples to the wall and the wall support to prevent rotation of the wall; and

wherein the keeper does not adhere to the wall and wall support when coupling the wall and the wall support.

13. 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.

14. The assembly of claim 13 wherein:

the first and second members are rotated together in a first rotational direction to engage them in a vertically locked arrangement;

the first horizontal surface is opposite the second horizontal surface across a gap therebetween;

the keeper occupies the gap to prevent, in compression, relative rotation of the members in a second rotational direction opposite the first rotational direction.

15. The assembly of claim 14 wherein the first and second members and the keeper are adapted to carry all of the structural stresses of the assembly, and no structural stresses are placed on fasteners other than the keeper holding the first and second structural members together.

16. The assembly of claim 13 wherein:

the first member has a first generally horizontal recess into which a first portion of the keeper is inserted;

the second member has a second generally horizontal recess into which a second portion of the keeper is inserted, the two recesses being vertically offset from one another;

whereby the keeper acts in tension to prevent vertical separation of the two members.

17. The assembly of claim 16 wherein:

the first generally horizontal recess defines a longitudinal channel in the first member;

the second generally horizontal recess defines a longitudinal channel in the second member;

the first and second portions of the keeper comprise longitudinally extending rails inserted into the channels in the first and second members, respectively.

18. The assembly of claim 13 wherein the first and second members are metal extrusions.

19. The assembly of claim 13 wherein said keeper and the first and second members are dimensioned such that at least a portion of the keeper fits snugly with corresponding portions of the first and second members without fasteners.

20. The assembly of claim 13 wherein the keeper further comprises:

an integrally formed, longitudinal tubular member having a generally C-shaped cross section.

21. The assembly of claim 13 wherein the second member is adapted to be a top corner member of a recreational vehicle, and the top corner member has an upwardly facing concave channel integrally formed in an outer surface thereof.

22. The assembly of claim 13 wherein one of the members has a panel positioning feature selected from the group consisting of: a raised ledge protruding horizontally from one of the members, for positioning and supporting an interior wall panel;

a gap between one of the members and the keeper, for positioning and holding an exterior wall panel;

a recess for positioning a ceiling panel;

an upwardly facing recess for holding roof material; and

a recess for retaining a portion of a wall panel and for retaining excess ceiling covering material.

23. A structural assembly for a vehicle comprising:

a wall member having a generally vertical protrusion;

a top corner member having a first recess therein for receiving the wall member protrusion;

a keeper configured to fit within a gap formed by the wall member and the top corner member for holding together the wall member and the top corner member, the keeper having an awning retainer integrally formed therein.

24. The structural assembly of claim 23 wherein the wall member and the top corner member have respective first and second channels integrally formed therein for receiving respective engagement portions of the keeper.