IP Library Granted Patent US 12,420,875
Granted Patent B2
US 12,420,875 · App. 18/129,530 · Granted Sep 23, 2025

Work vehicle

Inventors: Yuji Hirase (Osaka, JP); Sumio Yagyu (Osaka, JP); Kazuto Okazaki (Osaka, JP); Tsunehiro Il (Osaka, JP)
Assignee: KUBOTA CORPORATION
B62D33/0617B60H1/00278B60H1/00564B60K11/04B60L50/66B62D33/0604B62D49/06H02K9/19H05K7/20927B60K2001/006B60L2200/40
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Quick Facts
Patent No.
US 12,420,875
App. No.
18/129,530
Granted
Sep 23, 2025
Kind
B2
Abstract

A work vehicle includes: a travel device supporting a body; a battery; a motor configured to supply motive power to the travel device; an inverter configured to enable the motor to operate; a cabin supported by the body and housing a driving section that includes a driver seat; and an air conditioner configured to condition air inside the cabin. The inverter is inside the cabin.

Claims (61)

1. A work vehicle comprising:

a travel device supporting a body;

a battery;

a motor configured to supply motive power to the travel device;

an inverter configured to enable the motor to operate;

a cabin supported by the body and housing a driving section that includes a driver seat;

a vibration absorber configured to support the cabin to the body and absorb vibration; a strut extending to the roof section in a lateral section of the cabin; and

an air conditioner configured to condition air inside the cabin, wherein

the inverter is inside the cabin, and air that was conditioned by the air conditioner is supplied to the inverter via a duct inside the strut.

2. The work vehicle according to claim 1 , wherein

the inverter is behind a backrest section of the driver seat.

3. The work vehicle according to claim 1 , wherein

the inverter is below a seat section of the driver seat.

4. The work vehicle according to claim 1 , further comprising:

a side panel extending along a front-rear direction on a lateral side of the driver seat, wherein

the inverter is below the side panel.

5. The work vehicle according claim 1 , wherein

the battery is behind a backrest section of the driver seat.

6. The work vehicle according to claim 1 , wherein

the battery is below a seat section of the driver seat.

7. The work vehicle according to claim 1 , further comprising:

a side panel extending along a front-rear direction on a lateral side of the driver seat, wherein

the battery is below the side panel.

8. The work vehicle according to claim 1 , wherein

the battery is in a roof section of the cabin.

9. The work vehicle according to claim 8 , further comprising:

a strut extending to the roof section in a lateral section of the cabin, wherein

air that was conditioned by the air conditioner is supplied to the battery via a duct inside the strut.

10. The work vehicle according to claim 1 , wherein

the air conditioner is in a roof section of the cabin,

the work vehicle further comprises a strut extending to the roof section in a lateral section of the cabin, and

air that was conditioned by the air conditioner is supplied to the inverter via a duct inside the strut.

11. The work vehicle according to claim 1 , wherein

the air conditioner is in a roof section of the cabin,

the work vehicle further comprises a strut extending to the roof section in a lateral section of the cabin, and

air that was conditioned by the air conditioner is supplied to the battery via a duct inside the strut.

12. The work vehicle according to claim 1 , wherein

the air conditioner is behind a backrest section of the driver seat.

13. The work vehicle according to claim 1 , wherein

the air conditioner is below a seat section of the driver seat.

14. The work vehicle according to claim 1 , further comprising:

a side panel extending along a front-rear direction on a lateral side of the driver seat, wherein

the air conditioner is below the side panel.

15. The work vehicle according to claim 1 , further comprising:

a first storage section configured to store cooling oil;

a second storage section configured to store cooling water;

a first pump; and

a second pump, wherein

the cooling oil in the first storage section is supplied to the motor by the first pump, and returns from the motor to the first storage section, and

the cooling water in the second storage section is supplied to the inverter by the second pump, and returns from the inverter to the second storage section.

16. The work vehicle according to claim 15 , further comprising:

a cooling section configured to cool the cooling oil in a first supply system in which the cooling oil in the first storage section is supplied from the first pump to the motor; and

a radiator configured to cool the cooling water in a second supply system in which the cooling water in the second storage section is supplied from the second pump to the inverter.

17. The work vehicle according to claim 16 , wherein

the cooling section includes a heat exchanger extending across the first supply system and the second supply system, and

the heat exchanger is configured to perform heat exchange between the cooling oil and the cooling water.

18. The work vehicle according to claim 16 , wherein

the cooling section includes an oil cooler configured to cool the cooling oil.

19. The work vehicle according to claim 17 , wherein

the cooling water in the second storage section is supplied to the inverter and the battery by the second pump, and returns from the inverter and the battery to the second storage section.

20. A work vehicle comprising: a travel device supporting a body; a battery; a motor configured to supply motive power to the travel device; an inverter configured to enable the motor to operate; a cabin supported by the body and housing a driving section that includes a driver seat; an air conditioner configured to condition air inside the cabin; and a vibration absorber configured to support the cabin to the body and absorb vibration, wherein the inverter is inside the cabin, the battery is in a roof section of the cabin, the work vehicle further comprises a strut extending to the roof section in a lateral section of the cabin, and air that was conditioned by the air conditioner is supplied to the battery via a duct inside the strut.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 3, 2023
From: HIRASE, YUJI; YAGYU, SUMIO; OKAZAKI, KAZUTO; II, TSUNEHIRO
To: KUBOTA CORPORATION
Reel/Frame 065447/0638 →
Priority Claims (1)
JP 2022-090763 · Jun 3, 2022 · national
Continuity (1)
Related Publication 20230391408A1 · Dec 7, 2023
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