Work vehicle

Patent metadata

Field	Value
Publication number	US-9457756-B2
Application number	US-201514641725-A
Country	US
Kind code	B2
Filing date	Mar 9, 2015
Priority date	Sep 30, 2014
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

A work vehicle includes a vehicle body frame. A cockpit section or platform is arranged at a front section of the vehicle. A carrier bed is provided at a rear section of the vehicle. A ROPS includes a pair of left and right front supporting columns, a pair of left and right rear supporting columns, and a rearward overhanging frame extending rearward from upper part of the rear supporting columns.

First claim

What is claimed is:

1. A work vehicle comprising:
a vehicle body;
a cockpit section arranged in a front area of the vehicle body;
a carrier bed arranged in a rear area of the vehicle body;
a rollover protective structure protecting the cockpit section;
the rollover protective structure including:
a pair of left and right front supporting columns arranged in a front area of the cockpit section;
a pair of left and right rear supporting columns arranged in a rear area of the cockpit section;
a rearward overhanging frame extending rearward from an upper part of the rear supporting columns; and
a rear end and corner areas of the rearward overhanging frame being free of and unsupported by any vertical supporting columns.

2. The work vehicle according to claim 1 , wherein the rollover protective structure further includes a pair of left and right front frames connecting an upper part of the left and right front supporting columns and an upper part of the left and right rear supporting columns, and the rearward overhanging frame extends rearward from the front frames.

3. The work vehicle according to claim 1 , wherein the rearward overhanging frame includes a pair of left and right rear frames extending along a front to back direction of the vehicle, and a first coupling frame that couples rear end portions of the pair of left and right rear frames.

4. The work vehicle according to claim 3 , wherein the rollover protective structure further includes a second coupling frame arranged in front of the first coupling frame.

5. The work vehicle according to claim 4 , wherein the rollover protective structure includes a pair of left and right third coupling frames each having an end extending from the second coupling frame.

6. The work vehicle according to claim 5 , wherein the rearward overhanging frame includes a fourth coupling frame that has ends coupled to the first coupling frame and the second coupling frame.

7. The work vehicle according to claim 1 , wherein the rollover protective structure further includes a reinforcing support column arranged behind the rear supporting columns and functioning to support the rearward overhanging frame.

8. The work vehicle according to claim 1 , wherein the rearward overhanging frame overlies a rear cockpit section located behind the cockpit section.

9. The work vehicle according to claim 8 , wherein the carrier bed is configured to assume first and second modes of configuration, wherein, in the first mode, a front end of the carrier bed is located behind a rear cockpit section, and, in the second mode, the front end of the carrier bed extends into the rear cockpit section.

10. The work vehicle according to claim 9 , further comprising a rear seat arranged in the rear cockpit section, said rear seat being configured to assume a deployed or seating mode allowing seating in the first mode of the carrier bed, and a storage or non-deployed mode.

11. The work vehicle according to claim 1 , further comprising:
a carrier bed configured to assume first and second modes of configuration, wherein, in the first mode, a front end of the carrier bed is located behind a rear cockpit section, and, in the second mode, the front end of the carrier bed extends into the rear cockpit section; and
locking mechanisms configured to retain in place panels of the carrier bed.

12. The work vehicle according to claim 1 , further comprising:
a carrier bed with folding panels; and
reinforcing frame members connecting the rearward overhanging frame to the left and right rear supporting columns.

13. A work vehicle comprising:
a vehicle body;
a cockpit section arranged in a front area of the vehicle body;
a carrier bed arranged in a rear area of the vehicle body;
a rollover protective structure protecting front and rear cockpit sections; and
the rollover protective structure including:
a pair of left and right front supporting columns located in a front area of the front cockpit section;
a pair of left and right rear supporting columns located in an area behind the front cockpit section;
a rearward overhanging frame that extends rearward from an upper part of the rear supporting columns and overlies the rear cockpit section; and
a rear end and corners of the rearward overhanging frame being free of and unsupported by any vertical supporting columns for more than half a distance between the rear end and the upper part of the rear supporting columns.

14. The work vehicle according to claim 13 , wherein the rollover protective structure further includes a pair of left and right front frames connecting an upper part of the left and right front supporting columns and an upper part of the left and right rear supporting columns.

15. The work vehicle according to claim 13 , wherein the rearward overhanging frame includes a pair of left and right rear frames, and a first coupling frame that couples rear end portions of the pair of left and right rear frames.

16. The work vehicle according to claim 15 , wherein the rollover protective structure further includes a second coupling frame spaced from the first coupling frame.

17. The work vehicle according to claim 16 , wherein the rollover protective structure further includes a pair of left and right third coupling frames having ends extending from the second coupling frame and each coupling one of the pair of left and right front frames.

18. The work vehicle according to claim 17 , wherein the rearward overhanging frame includes a fourth coupling frame that has opposite ends coupled to the first coupling frame and the second coupling frame.

19. The work vehicle according to claim 13 , wherein the rollover protective structure further includes a reinforcing support column located behind and adjacent to the rear supporting columns.

20. The work vehicle according to claim 13 , wherein the rearward overhanging frame has a rear section that is unsupported by columns.

21. The work vehicle according to claim 13 , wherein the carrier bed is configured to assume different modes of configuration, wherein, in a first mode, a front end of the carrier bed is located behind the rear cockpit section, and, in a second mode, the front end of the carrier bed extends within the rear cockpit section.

22. The work vehicle according to claim 21 , further comprising a rear seat arranged in the rear cockpit section, said rear seat being structured and arranged to assume a deployed seating configuration and a stowed non-seating configuration.

23. A work vehicle comprising:
a vehicle body;
a cockpit section arranged in a front area of the vehicle body;
a carrier bed arranged in a rear area of the vehicle body;
a rollover protective structure protecting the cockpit section;
the rollover protective structure including:
a pair of left and right front supporting columns arranged in a front area of the cockpit section;
a pair of left and right rear supporting columns arranged in a rear area of the cockpit section;
a rearward overhanging frame extending rearward from an upper part of the rear supporting columns so as to overlie a rear cockpit section;
the rearward overhanging frame overlying a seating area of the rear cockpit section and comprising a horizontal member, corners and left and right side members,
wherein the horizontal member, the corners and the side members are unsupported by any vertical supporting columns in an area from a center a seat bottom of the seating area to a rearmost end of the rearward

Assignees

• Kubota Kk

Inventors

• Hirooka Yoshimi
• Kuramoto Takashi
• Nakao Kohta
• Wakabayashi Katsuhiro
• Hamamura Kyouhei

Classifications

• B60N2/305

  the cushion being hinged on the vehicle frame · CPC title

• B60N2/30

  Non-dismountable {or dismountable} seats storable in a non-use position, e.g. foldable spare seats · CPC title

• B60N2/3031

  in a longitudinal-vertical plane · CPC title

• B60R9/06

  at vehicle front or rear {(rear luggage compartments within vehicle extensible externally of the vehicle body B60R5/041)} · CPC title

• B60R21/13 Primary

  Roll-over protection (electrical circuits for triggering safety arrangements B60R21/01) · CPC title