Cab for work vehicle and work vehicle

Patent metadata

Field	Value
Publication number	US-9643662-B2
Application number	US-201514803526-A
Country	US
Kind code	B2
Filing date	Jul 20, 2015
Priority date	Feb 23, 2012
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A center pillar ( 3 ) has a pipe structure having a hollow space ( 3 a ). In the center pillar ( 3 ), a lower end opening ( 3 c ) for connecting the hollow space ( 3 a ) to an outdoor space and an upper end opening ( 3 b ) for connecting the hollow space ( 3 a ) to an indoor space ( 10 ) are formed. The lower end opening ( 3 c ) and the upper end opening ( 3 b ) are arranged at a prescribed distance from each other in a longitudinal direction of the center pillar ( 3 ). Thus, a cab for work vehicle and a work vehicle capable of preventing dust, water, or the like from entering the cab and realizing an environment in the cab comfortable for an operator are obtained.

First claim

The invention claimed is:

1. A cab for work vehicle, comprising:
a floor frame;
a plurality of pillars erected on said floor frame and surrounding an indoor space of said cab,
at least one pillar of said plurality of pillars having a pipe structure having a first hollow space,
in said at least one pillar, a first opening configured to exhaust said first hollow space to outside of the work vehicle and a second opening communicating said indoor space with said first hollow space being formed, and
said first opening being a lower end opening of said at least one pillar; and
a cab structure member other than said plurality of pillars, wherein
said cab structure member has a second hollow space partitioned off said indoor space and a third opening for connecting said second hollow space to said indoor space, and
said second hollow space is constructed to be connected to the outside of the work vehicle through said first opening,
wherein said floor frame has a double-walled floor board structure constituted of a lower floor board and an upper floor board arranged at a distance from each other, and a third hollow space lying between said lower floor board and said upper floor board is constructed to be connected to the outside of the work vehicle through said first opening.

2. The cab for work vehicle according to claim 1 , wherein
said plurality of pillars include a front pillar, a center pillar, and a rear pillar sequentially arranged from front to rear of said cab,
said center pillar has said pipe structure having said first hollow space and has an upper end opening through which said first hollow space opens at an upper end of said center pillar, and
said upper end opening is said second opening.

3. A work vehicle, comprising:
a vehicle frame having a front end and a rear end;
the cab for work vehicle according to claim 1 , mounted on said vehicle frame, between said front end and said rear end of said vehicle frame;
an engine attached to said vehicle frame on a side of said front end relative to said cab for work vehicle; and
an engine cooling module attached to said vehicle frame at said rear end, for cooling said engine,
said cab for work vehicle having
a projection portion projecting outward from said vehicle frame in a top plan view, and
an outdoor-side opening communicating with said first opening in a lower surface of said projection portion.

4. The work vehicle according to claim 3 , wherein
said outdoor-side opening includes a plurality of openings separate from one another.

5. The cab for work vehicle according to claim 1 , wherein said first opening is arranged at a lower end of said cab.

6. The cab for work vehicle according to claim 1 , said first opening and said second opening being arranged at a prescribed distance from each other in a longitudinal direction of said pillar.

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Nagami Kouji
• Miyazaki Masamichi

Classifications

• E02F9/0866

  Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment · CPC title

• B60K11/04

  Arrangement or mounting of radiators, radiator shutters, or radiator blinds · CPC title

• B60K11/00

  Arrangement in connection with cooling of propulsion units · CPC title

• E02F9/163

  Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS] (for handrails mounted on cabins E02F9/0833 takes precedence; for vehicles in general B60R21/11, B60R21/13, for fork-lift trucks B66F9/07545) · CPC title

• B62D33/0617 Primary

  for tractors or off-the-road vehicles (protective devices for drivers in case of overturning of tractors B60R21/131) · CPC title