US 12,441,346 B2
Work vehicle
Masashi Danguchi, Chikugo (JP); and Nagahiro Ogata, Chikugo (JP)
Assigned to YANMAR HOLDINGS CO., LTD., Osaka (JP)
Appl. No. 18/025,827
Filed by Yanmar Holdings Co., Ltd., Osaka (JP)
PCT Filed Aug. 31, 2021, PCT No. PCT/JP2021/031936
§ 371(c)(1), (2) Date Mar. 10, 2023,
PCT Pub. No. WO2022/059477, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 2020-157038 (JP), filed on Sep. 18, 2020.
Prior Publication US 2023/0286525 A1, Sep. 14, 2023
Int. Cl. B60Q 1/00 (2006.01); B60W 40/08 (2012.01); B60W 50/14 (2020.01); E02F 9/22 (2006.01); E02F 9/26 (2006.01)
CPC B60W 50/14 (2013.01) [B60W 40/08 (2013.01); E02F 9/226 (2013.01); E02F 9/26 (2013.01); B60W 2040/0881 (2013.01); B60W 2050/143 (2013.01); B60W 2050/146 (2013.01); B60W 2300/17 (2013.01); B60W 2540/223 (2020.02)] 8 Claims
OG exemplary drawing
 
1. A work vehicle for performing work, the work vehicle comprising:
a monitoring device configured to monitor an object within a predetermined distance surrounding of the work vehicle;
an alarm device configured to output an alarm based on a monitoring result of the monitoring device;
a posture detection unit comprising a seating detection switch configured to detect whether or not an operator is sitting on an operation seat of the work vehicle and a belt-wearing detecting switch configured to detect whether the operator wears a seat belt of the operation seat or removes the seat belt of the operation seat thereby to determine an operation posture of the operator for operating the work vehicle; and
a control unit configured to control the alarm device based on a detection result of the posture detection unit,
wherein the control unit is further configured to:
based on a detection of the operator sitting in the operation seat of the work vehicle or the operator wearing the seat belt by the posture detection unit, thereby indicating that the operator is in the operation posture, cause the alarm device to output the alarm that is based on the monitoring result of the monitoring device, and
based on a detection by the posture detection unit that the operator is no longer sitting on the operator seat and removes the seat belt while the alarm is output by the alarm device, cause the alarm device to stop output of the alarm, by the alarm device, that is based on the monitoring result of the monitoring device.