Tractor

Patent metadata

Field	Value
Publication number	US-9616942-B2
Application number	US-201414906715-A
Country	US
Kind code	B2
Filing date	Jun 20, 2014
Priority date	Jul 24, 2013
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

It is an object to provide a tractor, which is a work vehicle, being capable of providing an air-conditioner unit and rear working lights in the interior of a ceiling without protruding the rear end of the cabin. Regarding a tractor, which is a work vehicle in which a cabin for covering a drive operating unit is provided, the ceiling of the cabin is formed in an arc shape from the front end to the rear end thereof, and a radius of curvature of the arc shape is configured to increase as the ceiling advances from the front end to the rear end of the ceiling.

First claim

The invention claimed is:

1. A tractor having a cabin for covering a drive operating unit, comprising:
a ceiling of the cabin formed in an arc shape from a front end to a rear end thereof;
an eaves portion which is formed at the rear end of the cabin by protruding only an upper end of a rear end surface of the ceiling to rear;
working lights provided on both right and left sides of the eaves portion so as to face the rear from an interior of the ceiling, and
an introducing port for an air-conditioner unit to take in outside air which is formed between the working lights on both right and left sides of the eaves portion; wherein
a radius of curvature of the arc shape is increased from the front end to the rear end of the ceiling and
the air-conditioner unit is provided in the interior of the ceiling.

2. A tractor having a cabin for covering a drive operating unit, wherein
frame bodies on both right and left sides of a front side surface of the cabin, frame bodies on both right and left sides of a rear side surface of the cabin, and frame bodies on both right and left sides of a ceiling of the cabin are integrally constituted as a frame body of a left side door of the cabin and a frame body of a right side door of the cabin,
the front side surface is made of curved surface glass that cover the cabin from a floor surface of the drive operating unit to the ceiling,
the curved surface glass is formed in such a manner as to bend in a smooth arc shape whose axial direction is a right-left direction and in a smooth arc shape whose axial direction is an up-down direction,
the left side door and the right side door, which can fully open and close a surface of the cabin, are respectively provided on right and left lateral surfaces of the cabin,
entire surfaces of the left side door and the right side door are made of curved surface glass bent in a smooth arc shape whose axial direction is the up-down direction,
curved surface glass that covers the cabin from a vicinity of a seating surface of an operating seat of the drive operating unit to the ceiling is provided as rear glass on the rear side surface,
the curved surface glass of the rear side surface is formed in such a manner that the both right and left end portions of the curved surface glass are bent so as to be continuous with the left side door and the right side door,
the ceiling is continuously formed on upper end portions of the front side surface, the left side door, the right side door and the rear side surface,
the ceiling is formed in an arc shape from a front end to a rear end of the ceiling, a radius of curvature of the arc shape of the ceiling is increased from the front end to the rear end of the ceiling,
the height of the ceiling from ground is gently increased to the rear end of the ceiling,
thickness of the ceiling is increased from the front end to the rear end of the ceiling, an eaves portion, where only the upper end of the rear end surface of the ceiling protrudes to the rear with respect to the rear side surface of the cabin, is formed on the ceiling.

Assignees

• Yanmar Co Ltd

Inventors

• Kawashiri Shinya
• Okuyama Kiyoyuki

Classifications

• B60H1/26

  Ventilating openings in vehicle exterior; Ducts for conveying ventilating air · CPC title

• B60Q1/22

  for reverse drive · CPC title

• B60H1/00207

  characterised by the position of the HVAC devices with respect to the passenger compartment (B60H1/00021 takes precedence) · 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

• B60H1/00378

  for tractor or load vehicle cabins · CPC title