Work vehicle

Patent metadata

Field	Value
Publication number	US-12097832-B2
Application number	US-202218279235-A
Country	US
Kind code	B2
Filing date	Mar 9, 2022
Priority date	Mar 29, 2021
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

In a work vehicle, a through-hole in a stay includes first and second regions. When a grip is pulled in an unlocked state in which a collar is located inside the first region and a grip assembly is not locked inside the through-hole, a state is transitioned into a locked state in which a compression spring is compressed by a pin and a plain washer, a brake lever rotates, a claw moves toward a notch, and a rod is located inside the second region and the grip assembly is locked inside the through-hole. When a brake pedal is stepped on in this locked state, the claw and the notch engage with each other, and the brake pedal is locked.

First claim

The invention claimed is:

1. A work vehicle comprising:
a brake pedal;
a notch structure attached to the brake pedal and including a notch;
a stay including a through-hole;
a grip assembly inserted into the through-hole; and
a brake lever including a claw at one end; wherein the grip assembly includes:
a rod with a circular cross-section and a linear shape;
a grip at a first end of the rod;
a collar at or adjacent to the first end of the rod so as to cover an outer periphery of the rod;
a plain washer at a second end of the rod;
a pin that covers an outer periphery of the rod, is slidable with respect to the rod, and is fastened at or adjacent to the second end of the brake pedal; and
a compression spring that interconnects the plain washer and the pin and that covers the outer periphery of the rod;

the through-hole includes a first region in which the collar is slidable, and a second region with a length in a width direction that is shorter than an outer diameter of the collar and longer than an outer diameter of the rod;
when the grip is pulled in an unlocked state in which the collar is located inside the first region and the grip assembly is not locked inside the through-hole, a state is transitioned into a locked state in which the compression spring is compressed by the pin and the plain washer, the brake lever rotates, the claw moves toward the notch, and the rod is located inside the second region and the grip assembly is locked inside the through-hole; and
when the brake pedal is stepped on in the locked state, the claw and the notch engage with each other, and the brake pedal is locked.

2. The work vehicle according to claim 1 , wherein when the brake pedal is stepped on after the transition from the locked state to the unlocked state, the brake pedal is unlocked.

3. The work vehicle according to claim 1 , wherein a first end side of the grip assembly is higher than a second end side of the grip assembly.

4. The work vehicle according to claim 3 , wherein a position on the first end side and a position on the second end side of the grip assembly are between a highest position and a lowest position in a vertical direction of an operation position of an operation lever.

Assignees

• Kubota Kk

Inventors

• Takahashi Naoko
• Ishii Shinsuke
• Nagatomi Marina

Classifications

• B60T17/083

  Combination of service brake actuators with spring loaded brake actuators · CPC title

• B60T7/045

  with locking and release means, e.g. providing parking brake application · CPC title

• A01D69/10

  Brakes · CPC title

• B60T7/10

  Disposition of hand control · CPC title

• B60T7/08

  hand actuated · CPC title