Curtain wall system and panel support assembly therefor

1. A curtain wall system for a building structure, the system comprising:

a frame structure connectable to an outer perimeter of the building structure, the frame structure including a plurality of frame members secured to each other;

a plurality of wall panels securable to the frame structure side-by-side and parallel to each other so as to define an outer wall for the building structure when the frame structure is connected to the building structure;

a plurality of supporting chair members extending laterally away from each respective frame member of the plurality of frame members towards an exterior of the building structure for receiving a corresponding wall panel of the plurality of wall panels, each supporting chair member of the plurality of supporting chair members being sufficiently rigid for supporting the corresponding wall panel in a cantilevered configuration relative to the respective frame member, each supporting chair member having a proximal side end disposed towards the respective frame member, a distal side end disposed away from the respective frame member and an appendage connector located at the distal side end; and

an exterior appendage member having a distal chair connector for engaging the appendage connector of at least one supporting chair member of the plurality of supporting chair members to attach the appendage member to the at least one supporting chair member such that the exterior appendage member extends away from the at least one supporting chair member and towards the exterior of the building structure.

2. The system as claimed in claim 1 , further comprising a resilient member extending between the appendage connector of the at least one supporting chair member and the distal chair connector of the exterior appendage member when the appendage connector engages the distal chair connector to urge the appendage connector into engagement with the distal chair connector.

3. The system as claimed in claim 2 , wherein the resilient member includes a leaf spring.

4. The system as claimed in claim 2 , wherein the appendage connector of the at least one supporting chair member includes a hook portion and the distal chair connector of the exterior appendage includes an inwardly extending recess sidewall defining a hook recess for receiving the hook portion, the resilient member being secured to and extending away from the hook portion to abut and push against the recess sidewall of the distal chair connector when the hook portion is received in the hook recess.

5. The system as claimed in claim 1 , wherein the appendage member is selected from a group consisting of: a cap member, a sunshade assembly, a fin and an ornament.

6. The system as claimed in claim 1 , wherein the at least one supporting chair member is distinct from the respective frame member and includes a frame connector located at its proximal side end, and further wherein each frame member including a proximal chair connector disposed towards the at least one supporting chair member for engaging the frame connector to attach the at least one supporting chair member to the respective frame member.

7. The system as claimed in claim 6 , wherein the respective frame member includes an outer wall facing laterally towards the exterior of the building structure, the proximal chair connector including a receiving groove defined in the outer wall of the respective frame member and extending longitudinally along the respective frame member.

8. The system as claimed in claim 1 , wherein each exterior appendage member is removably connected to at least two supporting chair members of the plurality of supporting chair members.

9. The system as claimed in claim 8 , wherein the at least two supporting chair members are spaced apart from each other longitudinally along the respective frame member.

10. The system as claimed in claim 1 , wherein each supporting chair member includes a proximal chair section disposed towards the respective frame member and a distal chair section disposed away from the respective frame member, the proximal chair section including a first intermediate connector and the distal chair section including a second intermediate connector for engaging the first intermediate connector to attach the proximal chair section to the distal chair section.

11. The system as claimed in claim 10 , wherein the first and second intermediate connectors, when engaged together, form a channel therebetween, the channel defining a thermal break between the proximal and distal chair sections.

12. The system as claimed in claim 1 , wherein the corresponding wall panel is secured to the respective frame member using an adhesive material provided therebetween.

13. The system as claimed in claim 12 , wherein the adhesive material includes a structural silicone sealant.

14. A panel support assembly for a curtain wall system, the curtain wall system including a frame structure having a plurality of spaced-apart frame members, and a plurality of wall panels secured to the frame structure to define an outer wall for a building structure, the assembly comprising:

a plurality of supporting chair members connectable to a each respective frame member of the plurality of frame members of the frame structure so as to extend laterally away from the respective frame member towards an exterior of the building structure, each supporting chair member of the plurality of supporting chair members being sufficiently rigid for receiving and supporting a wall panel of the plurality of wall panels in a cantilevered configuration relative to the respective frame member, each supporting chair member having a proximal side end disposed towards the respective frame member, a distal side end disposed away from the respective frame member and an appendage connector located at the distal side end; and

an exterior appendage member having a distal chair connector for engaging the appendage connector of at least one of the supporting chair members to attach the appendage member to the at least one supporting chair member such that the exterior appendage member extends away from the at least one supporting chair member and towards the exterior of the building structure.

15. The assembly as claimed in claim 14 , further comprising a resilient member extending between the appendage connector of the at least one supporting chair member and the distal chair connector of the exterior appendage member when the appendage connector engages the distal chair connector to urge the appendage connector into engagement with the distal chair connector.

16. The assembly as claimed in claim 15 , wherein the resilient member includes a leaf spring.

17. The assembly as claimed in claim 15 , wherein the appendage connector of the at least one supporting chair member includes a hook portion and the distal chair connector of the exterior appendage includes an inwardly extending recess sidewall defining a hook recess for receiving the hook portion, the resilient member being secured to and extending away from the hook portion to abut and push against the recess sidewall of the distal chair connector when the hook portion is received in the hook recess.

18. The assembly as claimed in claim 14 , wherein the appendage member is selected from a group consisting of: a cap member, a sunshade assembly, a fin and an ornament.

19. The assembly as claimed in claim 14 , wherein each supporting chair member includes a proximal chair section disposed towards the respective frame member and a distal chair section disposed away from the respective frame member, the proximal chair section including a first intermediate connector and the distal chair section including a second intermediate connector for engaging the first intermediate connector to attach the proximal chair section to the distal chair section.

20. The assembly as claimed in claim 19 , wherein the first and second intermediate connectors, when engaged together, form a channel therebetween, the channel defining a thermal break between the proximal and distal chair sections.

21. The assembly as claimed in claim 14 , wherein the corresponding wall panel is secured to the respective frame member using an adhesive material provided therebetween.

22. The assembly as claimed in claim 21 , wherein the adhesive material includes a structural silicone sealant.

23. A curtain wall system for a building structure, the system comprising:

a frame structure including a plurality of spaced-apart frame members, each frame member including a proximal chair connector disposed towards an exterior of the building structure;

a plurality of wall panels secured to the frame structure to define an outer wall for the building structure;

a plurality of supporting chair members extending laterally away from each respective frame member of the plurality of frame members towards an exterior of the building structure for receiving a corresponding wall panel of the plurality of wall panels, each supporting chair member of the plurality of supporting chair members being sufficiently rigid for supporting the corresponding wall panel in a cantilevered configuration relative to the respective frame member, each supporting chair member having a proximal side end disposed towards the respective frame member, a distal side end disposed away from the respective frame member, each supporting chair member further including:

a frame connector located at its proximal side end for engaging the proximal chair connector of the respective frame member to attach each supporting chair member to the respective frame member;

an appendage connector located at the distal side end;

an exterior appendage member having a distal chair connector for engaging the appendage connector of at least one of the supporting chair members of the plurality of supporting chair members to attach the appendage member to the at least one supporting chair member such that the exterior appendage member extends away from the at least one supporting chair member and towards the exterior of the building structure; and

a resilient member disposed between the appendage connector and the distal chair connector to urge the appendage connector into engagement with the chair connector.

24. The system as claimed in claim 23 , wherein the resilient member includes a leaf spring.

25. The system as claimed in claim 24 , wherein the appendage connector includes a hook portion and the distal chair connector includes an inwardly extending recess sidewall defining a hook recess for receiving the hook portion, the resilient member being secured to and extending away from the hook portion to abut and push against the recess sidewall of the distal chair connector when the hook portion is received in the hook recess.