Work vehicle operator station with swivel arm swing avoidance system

Patent metadata

Field	Value
Publication number	US-11975768-B2
Application number	US-202017130413-A
Country	US
Kind code	B2
Filing date	Dec 22, 2020
Priority date	Feb 21, 2020
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

An operator station includes a base frame; a chair is configured to swivel in first and second clock directions; and first and second chair arms. The first chair arm includes a first chair arm body disposed proximate and repositionable with respect to a first lateral side of the chair; and a first chair arm adjustment mechanism coupled to the base frame and the first chair arm body and configured to permit the first chair arm to rotate in a first lateral plane relative to the chair in the first clock direction when the chair rotates in the second clock direction relative to the base frame and to rotate in the first lateral plane relative to the chair frame in the second clock direction when the chair rotates in the first clock direction relative to the base frame.

First claim

What is claimed is:

1. An operator station for a cab of a work vehicle, the operator station comprising:
a base frame configured to be secured to a floor of the cab and including a first track;
a chair including a chair frame mounted on the base frame such that the chair is configured to swivel in first and second clock directions;
a first chair arm, including:
a first chair arm body disposed proximate and repositionable with respect to a first lateral side of the chair; and
a first chair arm adjustment mechanism coupled to the base frame and the first chair arm body and configured to permit the first chair arm to rotate in a first lateral plane relative to the chair in the first clock direction when the chair rotates in the second clock direction relative to the base frame and to rotate in the first lateral plane relative to the chair frame in the second clock direction when the chair rotates in the first clock direction relative to the base frame, wherein the first chair arm adjustment mechanism includes a first cam that engages the first track as the chair rotates in the first clock direction and the second clock direction; and

a second chair arm, including:
a second chair arm body disposed proximate and repositionable with respect to a second lateral side of the chair; and
a second chair arm adjustment mechanism coupled to the base frame and the second chair arm and configured to permit the second chair arm body to rotate in a second lateral plane relative to the chair frame in the second clock direction when the chair rotates in the first clock direction relative to the base frame and to rotate in the second lateral plane relative to the chair frame in the first clock direction when the chair rotates in the second clock direction relative to the base frame;

wherein the rotation of the first chair arm body with respect to the chair frame and the rotation of the second chair arm body with respect to the chair frame occurs during at least a subset of angles of relative rotation of the chair with respect to the base frame.

2. The operator station of claim 1 , wherein the first track includes at least a first forward portion that radially diverges relative to a center swivel axis such that the first chair arm rotates in the first lateral plane in the first clock direction relative to the chair frame when the chair rotates in the second clock direction relative to the base frame when the first cam engages the first track in the first forward portion.

3. The operator station of claim 2 , wherein the first track includes a first rearward portion that is radially constant relative to the center swivel axis such that the first chair arm is stationary within the first lateral plane in the first clock direction relative to the chair frame when the chair rotates in the second clock direction relative to the base frame when the first cam engages the first track in the first rearward portion.

4. The operator station of claim 3 , wherein the first chair arm adjustment mechanism is configured such that the first chair arm is stationary within the first lateral plane when the chair rotates in the first clock direction relative to the base frame when the first cam engages the first track in the first rearward portion.

5. The operator station of claim 3 ,
wherein the base frame includes a second track, and
wherein the second chair arm adjustment mechanism includes a second cam that engages the second track as the chair rotates in the first clock direction and the second clock direction.

6. The operator station of claim 5 , wherein the second track includes at least a first forward portion that radially diverges relative to the center swivel axis such that the second chair arm rotates in the second lateral plane in the second clock direction relative to the chair frame when the chair rotates in the first clock direction relative to the base frame when the second cam engages the second track in the first forward portion.

7. The operator station of claim 6 , wherein the second track includes a first rearward portion that is radially constant relative to the center swivel axis such that the second chair arm is stationary within the second lateral plane in the second clock direction relative to the chair frame when the chair rotates in the first clock direction relative to the base frame when the second cam engages the second track in the first rearward portion.

8. The operator station of claim 7 , wherein the second chair arm adjustment mechanism is configured such that the second chair arm is stationary within the second lateral plane when the chair rotates in the second clock direction relative to the base frame when the second cam engages the second track in the first rearward portion.

9. An operator station for a cab of a work vehicle, the operator station comprising:
a base frame configured to be secured to a floor of the cab;
a chair including a chair frame mounted on the base frame such that the chair is configured to swivel in first and second clock directions;
a first chair arm, including:
a first chair arm body disposed proximate and repositionable with respect to a first lateral side of the chair; and
a first chair arm adjustment mechanism coupled to the base frame and the first chair arm body and configured to permit the first chair arm to rotate in a first lateral plane relative to the chair in the first clock direction when the chair rotates in the second clock direction relative to the base frame and to rotate in the first lateral plane relative to the chair frame in the second clock direction when the chair rotates in the first clock direction relative to the base frame; and

a second chair arm, including:
a second chair arm body disposed proximate and repositionable with respect to a second lateral side of the chair; and
a second chair arm adjustment mechanism coupled to the base frame and the second chair arm and configured to permit the second chair arm body to rotate in a second lateral plane relative to the chair frame in the second clock direction when the chair rotates in the first clock direction relative to the base frame and to rotate in the second lateral plane relative to the chair frame in the first clock direction when the chair rotates in the second clock direction relative to the base frame;

wherein the rotation of the first chair arm body with respect to the chair frame and the rotation of the second chair arm body with respect to the chair frame occurs during at least a subset of angles of relative rotation of the chair with respect to the base frame;
wherein the first chair arm adjustment mechanism includes an adjustment bracket supporting the first chair arm body and a pivot adjustment member coupled to the adjustment bracket mounted to the chair frame; and
wherein the base frame includes a track, and wherein the pivot adjustment member includes a coupling strut with a cam that engages the track of the base frame such that, when the chair rotates in the first clock direction, the cam engages the track to pivot the first chair arm adjustment mechanism and the first chair arm in the second clock direction in the first lateral plane relative to the chair frame.

10. An operator station for a cab of a work vehicle, the operator station comprising:
a base frame configured to be secured to a floor of the cab;
a chair including a chair frame mounted on the base frame such that the chair is configured to swivel in first and second clock directions;
a first chair arm, including:
a first chair arm body disposed proximate and repositionable with respect to a first lateral side of the chair; and
a first chair arm adjustment mechanism coupled to the base frame and the first chair arm body an

Assignees

• Deere & Co

Inventors

• Mcconoughey Gregory O
• Depoorter Mark C
• Thompson Michael
• Huenink Brian M

Classifications

• B62D33/0617 Primary

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

• B60N2/38

  specially constructed for use on tractors or like off-road vehicles · CPC title

• B60N2/68

  Seat frames · CPC title

• B60N2/767

  Angle adjustment · CPC title

• B60N2/77

  Height adjustment · CPC title