{
  "$type": "site.standard.document",
  "description": "Provided are an operation device and a work machine provided with the same, the operation device being capable of instantly adjusting an audio player sound volume even when the audio player sound volume sounds quite or loud as a result of adjusting an engine speed during audio playback, or capable…",
  "path": "/patents/1390273",
  "publishedAt": "2026-06-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60K35/00",
    "HITACHI CONSTRUCTION MACH CO [JP]"
  ],
  "textContent": "Provided are an operation device and a work machine provided with the same, the operation device being capable of instantly adjusting an audio player sound volume even when the audio player sound volume sounds quite or loud as a result of adjusting an engine speed during audio playback, or capable of instantly adjusting an air conditioner air volume even when it is desired to suppress engine power loss or to improve fuel efficiency by reducing an air volume of an air conditioner as a result of adjusting an engine speed during operation of the air conditioner. In the operation device in which an engine speed adjustment function and an audio player sound volume adjustment function are exclusively assigned to a rotation operation of a dial, in a state in which the engine speed adjustment function is assigned to the rotation operation of the dial, the assignment of the rotation operation of the dial is switched to the audio player sound volume adjustment function by tilting the dial in one direction. In a state where the audio player sound volume adjustment function is assigned to the rotation operation of the dial, the assignment of the rotation operation of the dial is switched to the engine speed adjustment function by tilting the dial in a direction opposite to that when the assignment of the rotation operation of the dial is switched from the engine speed adjustment function to the audio player sound volume adjustment function.",
  "title": "OPERATION DEVICE AND WORK MACHINE PROVIDED WITH SAME"
}