Work vehicle

Patent metadata

Field	Value
Publication number	US-10378183-B2
Application number	US-201615516709-A
Country	US
Kind code	B2
Filing date	Oct 21, 2016
Priority date	Oct 21, 2016
Publication date	Aug 13, 2019
Grant date	Aug 13, 2019

Abstract

A wheel loader comprises a console box and a support component. The console box is disposed on the side of an operator's seat and is able to rotate in the forward and backward direction. The support component has a rotary shaft disposed in the left and right direction under the console box, and rotatably supports the console box around the rotary shaft between an operation position in which the console box is disposed horizontally and a retracted position in which the console box is rotated rearward from the operation position and is disposed at an angle. The location of the center of gravity of the console box is disposed more to the front than the rotary shaft at the operation position, and more to the rear than the rotary shaft at the retracted position.

First claim

The invention claimed is:

1. A work vehicle, comprising:
a console box disposed on a side of an operator's seat, the console box being rotatable in a forward and backward direction; and
a support component having a first rotary shaft disposed in a left and right direction below the console box, the support component supporting the console box rotatably around the first rotary shaft between an operation position and a retracted position in which the console box is rotated from the operation position,
a center of gravity position of the console box being disposed more to a front than the first rotary shaft in the operation position, and more to a rear than the first rotary shaft in the retracted position.

2. The work vehicle according to claim 1 , wherein
the console box is configured to be slidable in the forward and backward direction with respect to the support component, and
the center of gravity position of the console box is disposed more to the front than the first rotary shaft in the operation position in a state in which the console box has been slid to the rear, and more to the rear than the first rotary shaft in the retracted position in a state in which the console box has been slid forward.

3. The work vehicle according to claim 1 , further comprising
a biasing component disposed below the console box to bias the console box in a direction of the operation position,
a rotational moment produced in the console box by a biasing force of the biasing component in the retracted position being less than a rotational moment produced by a weight of the console box.

4. The work vehicle according to claim 1 , further comprising
a biasing component disposed below the console box to bias the console box in a direction of the operation position,
the biasing component biasing in a direction of expansion in its lengthwise direction,
the support component including
a rotary frame disposed below the console box, the rotary frame rotating along with the console box; and
a fixed frame disposed below the rotary frame, the fixed frame rotatably supporting the rotary frame, and
the biasing component having a first end that links to the rotary frame to the rear of the first rotary shaft, and a second end that links to the fixed frame to the rear of the first end.

5. The work vehicle according to claim 1 , further comprising
an operation position locking mechanism releasably locking the console box in the operation position.

6. The work vehicle according to claim 5 , further comprising
a rotary lever configured to be grasped by an operator when the console box is rotated in the forward and backward direction,
the support component including
a rotary frame disposed below the console box, the rotary frame rotating along with the console box; and
a fixed frame disposed below the rotary frame, the fixed frame rotatably supporting the rotary frame;
the rotary lever being rotatably attached to the rotary frame around a second rotary shaft provided at a different position from a position of the first rotary shaft,
the operation position locking mechanism including
a latching member disposed on the fixed frame; and
a locking component disposed on the rotary frame, the locking component being latched by the latching member in a locked state at the operation position, and
a latching of the locking component to the latching member being released as the rotary lever rotates rearward.

7. The work vehicle according to claim 6 , wherein
the rotary frame has a contacted part that is hit by the rotary lever when the rotary lever rotates rearward by a specific angle after the latching is released, and
the rotary frame rotating rearward along with the rotary lever after the rotary lever hits the contacted part.

8. The work vehicle according to claim 1 , further comprising
a retracted position locking mechanism releasably locking the console box in the retracted position.

9. The work vehicle according to claim 8 , further comprising
a rotary lever configured to be grasped by an operator when the console box is rotated in the forward and backward direction,
the support component including
a rotary frame disposed below the console box, the rotary frame rotating along with the console box; and
a fixed frame disposed below the rotary frame, the fixed frame rotatably supporting the rotary frame;
the rotary lever being rotatably attached to the rotary frame,
the retracted position locking mechanism including
a restricting member disposed on the fixed frame; and
a locking member disposed rotatably on the rotary frame, a forward rotation of the locking member being restricted by the restricting member in the state of being locked at the retracted position,
the rotary lever having a cylindrical grip configured to be grasped by an operator, and a post-shaped insertion member inserted into the grip,
the insertion member having a push button formed at one end and protruding from a distal end of the grip, and the other end being linked to the locking member at a linked part, and
the locking member being rotated by depressing the push button, thereby releasing a restriction by the restricting member.

10. The work vehicle according to claim 9 , wherein
the locking member is formed so as to rotate rearward under its own weight and around a third rotary shaft, and includes
a contact face configured to come into contact with the restricting member under its own weight at the retracted position; and
an interference face formed in an arc whose center is the third rotary shaft, the interference face being disposed under the restricting member in a state in which the contact face is in contact with the restricting member,
the interference face interfering with the restricting member when the console box has been rotated forward in a state in which the push button is not being depressed, and
the locking member rotating forward around the third rotary shaft and the interference face moving away from under the restricting member when the push button is depressed.

11. The work vehicle according to claim 1 , wherein
the console box is horizontally disposed when the console box is in the operation position, and
the console box is rotated rearward to be inclined when the console box is in the retracted position.

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Kato Yasunari

Classifications

• A01G23/00

  Forestry · CPC title

• B60P1/286

  Loading buckets · CPC title

• B60P1/04

  with a tipping movement of load-transporting element (dredgers or soil-shifting machines E02F3/00) · CPC title

• E02D17/13

  Foundation slots {or slits}; Implements for making these slots {or slits} · CPC title

• B66F9/0759

  Details of operating station, e.g. seats, levers, operator platforms, cabin suspension · CPC title