Patent ID: 11879230
Assignee: KOMATSU LTD.
Field: Transport (Mechanical engineering)
Classification: CPC E  B | IPC B  E

Claim 0:
1. A cab comprising:
a pillar member extending in an up-down direction;
a beam member extending in a left-right direction and connected to an upper end of the pillar member; and
a rib member provided at a corner portion where the pillar member and the beam member intersect with each other, and connected to the pillar member and the beam member, wherein
the rib member includes a vertical rib portion embedded in the pillar member,
the pillar member includes an upper pillar portion connected to the beam member, and a lower pillar portion located below the upper pillar portion,
the upper pillar portion has a width smaller than that of the lower pillar portion in the left-right direction, and between the beam member and the lower pillar portion in the up-down direction, the upper pillar portion has a recessed shape that is recessed from an inside toward an outside of the cab in the left-right direction, and
the vertical rib portion includes a wide portion embedded in the lower pillar portion, and a narrow portion embedded in the upper pillar portion and having a width smaller than that of the wide portion in the left-right direction.