Operator's cab and work vehicle

Patent metadata

Field	Value
Publication number	US-2022134926-A1
Application number	US-202017310917-A
Country	US
Kind code	A1
Filing date	Feb 26, 2020
Priority date	Mar 1, 2019
Publication date	May 5, 2022
Grant date	—

Abstract

An operator's cab includes an operator's seat provided on a floor surface, a control lever that is provided laterally to the operator's seat and is operated at least in a fore/aft direction, and an armrest that includes an upper surface and is provided laterally to the operator's seat in the rear of the control lever. The upper surface includes a forward inclined portion and a rearward inclined portion in the rear of the forward inclined portion. With the floor surface being defined as the reference, the forward inclined portion decreases in height toward a front end of the upper surface in the fore/aft direction. With the floor surface being defined as the reference, the rearward inclined portion decreases in height toward a rear end of the upper surface in the fore/aft direction.

First claim

1 : An operator's cab comprising:
an operator's seat provided on a floor surface; an operation portion provided laterally to the operator's seat, the operation portion being operated at least in a fore/aft direction; and an armrest including an upper surface, the armrest being provided laterally to the operator's seat in rear of the operation portion, wherein the upper surface includes a forward inclined portion and a rearward inclined portion in the rear of the forward inclined portion, with the floor surface being defined as a reference, the forward inclined portion decreases in height toward a front end of the upper surface in the fore/aft direction, and with the floor surface being defined as the reference, the rearward inclined portion decreases in height toward a rear end of the upper surface in the fore/aft direction.

2 : The operator's cab according to claim 1 comprising the armrest, wherein
the upper surface further includes a top,
with the floor surface being defined as the reference, the height of the top is highest of heights of the upper surface that vary depending on positions in the fore/aft direction,
the forward inclined portion is provided as ranging from the front end of the upper surface to the top in the fore/aft direction, and
the rearward inclined portion is provided as ranging from the top to the rear end of the upper surface in the fore/aft direction.

3 : The operator's cab according to claim 2 comprising the armrest, wherein
in a front view, the top is curved downward in a lateral direction.

4 : The operator's cab according to claim 3 comprising the armrest, wherein
the forward inclined portion and the rearward inclined portion are each formed from a curved surface that extends in the fore/aft direction as being curved.

5 : The operator's cab according to claim 4 comprising the armrest, wherein
the curved surface has a constant curvature between the front end of the upper surface and the rear end of the upper surface.

6 : The operator's cab according to claim 1 , wherein
the operation portion is a control lever that can be tilted at least among a first position, a second position shifted forward from the first position, and a third position shifted rearward from the first position.

7 : The operator's cab according to claim 6 comprising the armrest, wherein
the control lever includes a grip that can be held by an operator, and
when a virtual straight line that extends rearward from a root of the grip at time when the control lever is positioned at the first position and is in contact with the forward inclined portion is assumed, the front end of the upper surface is located below the virtual straight line.

8 : A work vehicle comprising:
the operator's cab according to claim 1 ; and a work implement controlled by using the operation portion.

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Miyamoto Hideaki
• Sasaki Makoto
• Tanaka Hiroaki
• Iwahashi Norihiro

Classifications

• B60N2/24

  for particular purposes or particular vehicles · CPC title

• E02F9/166

  movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins (seats for vehicles in general B60N2/00) · CPC title

• A47C7/54

  Supports for the arms · CPC title

• E02F9/2004

  Control mechanisms, e.g. control levers (control levers per se G05G) · CPC title

• E02F9/16

  Cabins, platforms, or the like, for drivers ({for motor vehicles in general B62D33/06}, for cranes B66C13/54) · CPC title