Machine cabin having improved operator visibility

1. A cabin for a mobile machine, comprising:

a floor;

a roof;

at least one A-post located at a leading end relative to a forward travel direction of the mobile machine; and

a C-post located at a trailing end opposite the at least one A-post, the C-post having two terminal ends located at the floor and a terminal end located at the roof, the C-post including:

a C-shaped beam having the two terminal ends; and

two straight beams spaced apart from each other and extending from the C-shaped beam to the roof.

2. The cabin of claim 1 , further including a B-post located between the at least one A-post and the C-post, wherein the B-post and the C-post together define an unobstructed corner viewing area therebetween that spans through about 75-95°.

3. The cabin of claim 2 , wherein the unobstructed corner viewing area is located only at upper half of the cabin.

4. The cabin of claim 1 , wherein:

the mobile machine includes a seat located within the cabin;

the two terminal ends are located at opposing sides of the seat; and

the terminal end is located behind the seat.

5. The cabin of claim 1 , further including a plate joining the two straight beams together and forming at least one recess between the two straight beams.

6. The cabin of claim 1 , wherein the at least one A-post includes:

a first section that tilts away from the roof in a forward traveling direction of the mobile machine; and

a second section that tilts away from the floor in the forward traveling direction to intersect the first section.

7. The cabin of claim 6 , wherein the first section tilts away from the roof at an angle that is less than a tilt angle of the second section relative to the floor.

8. The cabin of claim 7 , wherein:

the first section further tilts inward toward a center plane of symmetry that passes through the cabin in a fore/aft direction; and

the second section includes:

a base segment connected to the floor and extending toward the roof in general alignment with the center plane of symmetry;

a knee segment extending from a distal end of the base segment toward the center plane of symmetry; and

a center segment extending from the knee segment toward the first section in general alignment with the center plane of symmetry.

9. The cabin of claim 1 , wherein:

the mobile machine includes a seat located inside the cabin; and

the C-post extends from the two terminal ends at opposing outer rear corners of the floor to a center location behind the seat.

10. The cabin of claim 1 , wherein:

the at least one A-post includes two A-posts;

the cabin further includes two B-posts, each located between one of the two A-posts and the C-post; and

the two A-posts, the two B-posts, and the C-post form at least four unobstructed corner views with a total horizontal viewing angle of about 260-270°.

11. The cabin of claim 10 , wherein the two A-posts further form a front view therebetween having a horizontal viewing angle of about 25-35°.

12. The cabin of claim 10 , wherein a horizontal viewing angle between one of the two B-posts and the C-post is greater than a horizontal viewing angle between the one of the B-posts and one of the two A-posts.

13. A cabin for a mobile machine, comprising:

a floor;

a roof;

at least one A-post located at a leading end relative to a forward travel direction of the mobile machine;

a C-post located at a trailing end opposite the at least one A-post, the C-post being fabricated from two parallel spaced-apart beams to form a first recess therebetween and including a plate connected between the two parallel spaced-apart beams to form the first recess, wherein the C-post further forms a second recess at an opposing side of the plate relative to the first recess between the parallel spaced-apart beams;

at least one of an air handling duct and a wiring harness mounted within the first recess of the C-post; and

HVAC coolant lines externally passing through the second recess to an HVAC unit mounted on top of the cabin.

14. A cabin for a mobile machine, comprising:

a floor;

a roof;

at least one A-post located at a leading end relative to a forward travel direction of the mobile machine; and

a C-post located at a trailing end opposite the at least one A-post, the C-post having two terminal ends located at the floor and a terminal end located at the roof, the C-post including:

a C-shaped beam having the two terminal ends; and

a box-like structure extending from the C-shaped beam to the roof and having an inward facing opening configured to receive an air filter.