Electronic equipment enclosure

1. An electronic equipment enclosure structure, comprising:

(a) a frame structure, including:

(i) a front frame, including a first pair of vertical frame members, a first upper side-to-side cross member, and a first lower side-to-side cross member,

(ii) a rear frame, including a second pair of vertical frame members, a second upper side-to-side cross member, and a second lower side-to-side cross member, and

(iii) a plurality of front-to-back horizontal members, including first, second, third, and fourth horizontal members, each connecting the front frame to the rear frame;

(b) a front-to-back horizontal mounting rail made of extruded metal and having proximal and distal ends, the front-to-back horizontal mounting rail being interconnected at its proximal end to one of either the upper or lower side-to-side cross members of the front frame and at its distal end to the corresponding upper or lower side-to-side cross member of the rear frame such that the horizontal mounting rail is disposed adjacent to, but spaced inwardly from, at least one of the front-to-back horizontal members; and

(c) a reinforced bracket assembly attached to either the proximal or distal end of the front-to-back horizontal mounting rail and to the corresponding front or rear side-to-side cross member such that the bracket assembly reinforces the interconnection of the front-to-back horizontal mounting rail and the corresponding front or rear side-to-side cross member;

(d) wherein the corresponding front or rear side-to-side cross member includes opposed ends and an integral tab extending vertically from the cross member at a location that is spaced inwardly from the opposed ends thereof, wherein the integral tab is interconnected to an end of the front-to-back horizontal mounting rail.

2. The electronic equipment enclosure structure of claim 1 , wherein the reinforced bracket assembly includes a brace structure, having at least an L-shaped cross-section that includes a first vertical portion that is interconnected to the end of the front-to-back horizontal mounting rail and a second vertical portion, right-angled relative to the first vertical portion, that braces the first vertical portion against the side-to-side cross member.

3. The electronic equipment enclosure structure of claim 2 , wherein the first vertical portion of the brace structure is disposed between the integral tab and the end of the front-to-back horizontal mounting rail.

4. The electronic equipment enclosure structure of claim 3 , wherein the first vertical portion of the brace structure and the integral tab are fastened to the end of the front-to-back horizontal mounting rail via a fastener connected to a slot that is part of the extrusion of the front-to-back horizontal mounting rail.

5. The electronic equipment enclosure structure of claim 4 , wherein the slot is a cylindrical slot and the fastener is threaded into the cylindrical slot.

6. The electronic equipment enclosure structure of claim 2 , wherein the reinforced bracket assembly further includes a cover disposed around the brace structure.

7. The electronic equipment enclosure structure of claim 1 , wherein the front-to-back horizontal mounting rail is an upper front-to-back horizontal mounting rail.

8. The electronic equipment enclosure structure of claim 1 , wherein the front-to-back horizontal mounting rail is a lower front-to-back horizontal mounting rail.

9. The electronic equipment enclosure structure of claim 1 , wherein the reinforced bracket assembly includes a brace structure, having at least an L-shaped cross-section that includes a first vertical portion that is interconnected to the end of the front-to-back horizontal mounting rail and a second vertical portion, angled relative to the first vertical portion, that braces the first vertical portion against the corresponding front or rear side-to-side cross member.

10. The electronic equipment enclosure structure of claim 9 , wherein the brace structure of each reinforced bracket assembly has a U-shaped cross-section that includes the first vertical portion, the second vertical portion, and a third vertical portion, wherein the third vertical portion is angled relative to the first vertical portion and braces the first vertical portion against the side-to-side cross member.

11. The electronic equipment enclosure structure of claim 10 , wherein the second and third vertical portions of the brace structure each include a respective tab that extends through the side-to-side cross member.

12. The electronic equipment enclosure structure of claim 11 , wherein the reinforced bracket assembly further includes a reinforcement plate, wherein the bulk of the brace structure is disposed on the opposite side of the side-to-side cross member from the reinforcement plate, and wherein the tabs of the brace structure extend through the side-to-side cross member and reside in slots in the reinforcement plate.

13. A frame structure for an electronic equipment enclosure, comprising:

(a) a front frame, including a first pair of vertical frame members, a first upper side-to-side cross member, and a first lower side-to-side cross member;

(b) a rear frame, including a second pair of vertical frame members, a second upper side-to-side cross member, and a second lower side-to-side cross member;

(c) a plurality of front-to-back horizontal members, including first, second, third, and fourth horizontal members, wherein:

(i) each front-to-back horizontal member is a frame member, a horizontal mounting rail, or a combination frame member/horizontal mounting rail,

(ii) each horizontal member has a proximal end and a distal end, and

(iii) each horizontal member is made of an extruded material; and

(d) a plurality of brace structures, each having center and side portions, the side portions being angled relative to the center portion;

(e) wherein the first and second horizontal members are interconnected at their proximal ends to the upper side-to-side cross member of the front frame and at their distal ends to the upper side-to-side cross member of the rear frame, and wherein the third and fourth horizontal members are interconnected at their proximal ends to the lower side-to-side cross member of the front frame and at their distal ends to the lower side-to-side cross member of the rear frame; and

(f) wherein each interconnection of an end of a horizontal member with a side-to-side cross member is reinforced by a respective brace structure such that the center portion of the brace structure is interconnected to the end of the respective horizontal members and the side portions of the brace structure are arranged to brace the center portion against the respective side-to-side cross member.

14. The frame structure of claim 13 , wherein each end of each horizontal member includes an end surface that matches a cross-section of the horizontal member, and wherein the side-to-side cross members and brace structures are interconnected with the end surfaces of the horizontal members.

15. The frame structure of claim 14 , wherein the side portions of each brace structure each include a respective tab that extends through the respective side-to-side cross member.

16. The frame structure of claim 15 , further comprising a plurality of reinforcement plates, each corresponding to a respective brace structure, wherein the bulk of each respective brace structure is disposed on the opposite side of the side-to-side cross member from the reinforcement plate, and wherein the tabs of each brace structure extend through the side-to-side cross member and reside in slots in the respective reinforcement plate.

17. A frame structure for an electronic equipment enclosure, comprising:

(a) a front frame, including a first pair of vertical frame members, a first upper side-to-side cross member, and a first lower side-to-side cross member;

(b) a rear frame, including a second pair of vertical frame members, a second upper side-to-side cross member, and a second lower side-to-side cross member; and

(c) a plurality of front-to-back horizontal members, including first, second, third, and fourth horizontal members, wherein:

(i) each front-to-back horizontal member is a frame member, a horizontal mounting rail, or a combination frame member/horizontal mounting rail,

(ii) each horizontal member has a proximal end and a distal end, and

(iii) each horizontal member has a slot running along its longitudinal axis; and

(d) wherein each side-to-side cross member includes opposed ends and first and second integral tabs, the tabs extending vertically from the cross member at locations that are spaced inwardly from the opposed ends thereof; and

(e) wherein:

(i) the first and second horizontal members are interconnected at their proximal ends to the integral tabs on the upper side-to-side cross member of the front frame and at their distal ends to the integral tabs on the upper side-to-side cross member of the rear frame, and

(ii) the third and fourth horizontal mounting rails are interconnected at their proximal ends to the integral tabs on the lower side-to-side cross member of the front frame and at their distal ends to the integral tabs on the lower side-to-side cross member of the rear frame.

18. The frame structure of claim 17 , wherein each interconnection of a horizontal member end to a tab on a side-to-side cross member is at least partially facilitated by a fastener extending through the tab and connecting to the slot of the horizontal mounting rail.

19. The frame structure of claim 17 , further comprising a plurality of brace structures, wherein each interconnection of a horizontal member end to a tab on a side-to-side cross member is reinforced by a respective brace structure.