# US 2022/0397165 A1 · Working vehicle and tractor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0397165 A1 - Document ID: US20220397165A1 - Status: Published application - Kind: A1 - Application number: 17/749,556 - Filed: 2022-05-20 - Published: 2022-12-15 - Earliest claimed: 2021-06-14 - Assignees: Kubota Corporation - Applicants: Kubota Corporation - Inventors: Kohei HORAI; Yoshihiko KUROSHITA - Web page: https://patentgrep.com/patent/US20220397165A1 ## CPC - F16D 48/02: Control by fluid pressure - B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor - B60K 35/215: characterised by the combination of multiple visual outputs, e.g. combined instruments with analogue meters and additional displays - B60K 35/22: Display screens - B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver - B60K 35/81: for controlling displays - B62D 49/06: adapted for multi-purpose use - F16D 48/06: Control by electric or electronic means, e.g. of fluid pressure - F16D 67/02: Clutch-brake combinations - B60K 2360/126: Rotatable input devices for instruments - B60K 2360/1434: Touch panels - B60K 2360/168: Target or limit values - F16D 25/12: Details not specific to one of the before-mentioned types - F16D 2500/10412: Transmission line of a vehicle - F16D 2500/111: Agricultural - F16D 2500/1112: Heavy vehicle - F16D 2500/31413: Clutch pedal position - F16D 2500/31426: Brake pedal position - F16D 2500/7041: Position - F16D 2500/70414: Quick displacement to clutch touch point - F16D 2500/7049: Brake parameters - F16D 2500/70689: using maximum or minimum values - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) ## Abstract A working vehicle includes: a clutch displaceable to a connected state in which power is transmitted to a drive, a disconnected state in which the transmission is disconnected, and a half-clutch state in which power is slidably and partly transmitted to the drive; a detector that detects an operation position of a clutch pedal and outputs a detected value corresponding to the operation position detected; a control device that brings the clutch into the half-clutch state if the detected value corresponds with a threshold, and brings the clutch into the disconnected state if the detected value is less than the threshold and into the connected state if the detected value is greater than the threshold, and vice versa; and a change unit that changes the threshold to a different value in accordance with an operation on the operation member. ## Claims ### Claim 1 A working vehicle comprising: a prime mover that outputs power; a drive driven by the power output from the prime mover; a transmission mechanism that transmits the power output from the prime mover to the drive; a clutch provided in the transmission mechanism and displaceable to a connected state in which the power is transmitted to the drive, a disconnected state in which transmission of the power to the drive is disconnected, and a half-clutch state in which the power is slidably and partly transmitted to the drive; a clutch pedal; a detector that detects an operation position of the clutch pedal and outputs a detected value corresponding to the operation position detected; a control device that brings the clutch into the half-clutch state if the detected value from the detector corresponds with a predetermined threshold, brings the clutch into the disconnected state if the detected value is either one of a value less than the threshold and a value greater than the threshold, and brings the clutch into the connected state if the detected value is the other of the value less than the threshold and the value greater than the threshold; an operation member; and a change unit that changes a value of the threshold to a different value in accordance with an operation on the operation member. ### Claim 2 (depends on 1) The working vehicle according to claim 1, wherein if the clutch pedal is in a maximum operation position, the detector outputs a predetermined first detected value as the detected value, if the clutch pedal is in an unoperated position, where no operation is performed, the detector outputs a predetermined second detected value, which is a value separated from the first detected value by a certain value range, as the detected value, the threshold is a predetermined single value among a plurality of values that are present between the first detected value and the second detected value, and in accordance with the operation on the operation member, the change unit changes the value of the threshold to a value closer to the first detected value than a default value is or a value closer to the second detected value than the default value is. ### Claim 3 (depends on 1) The working vehicle according to claim 1, further comprising: a display device, wherein the control device causes the display device to display the threshold that is set, and causes the display device to display the threshold to be changed by the change unit in accordance with the operation on the operation member. ### Claim 4 (depends on 1) The working vehicle according to claim 1, further comprising: a display device, wherein the control device causes the display device to display, as a sensitivity of the clutch pedal, the threshold that is set, and causes the display device to display, as the sensitivity of the clutch pedal, the threshold to be changed by the change unit in accordance with the operation on the operation member. ### Claim 5 (depends on 1) The working vehicle according to claim 1, wherein the operation member is a dial switch provided on an operation lever, and the change unit changes the value of the threshold to a different value in accordance with an operation on the dial switch. ### Claim 6 (depends on 1) The working vehicle according to claim 1, wherein the operation member is a display device including a display panel and a touch panel that is disposed on a surface of the display panel, and the change unit changes the value of the threshold to a different value in accordance with a touch operation on the touch panel. ### Claim 7 (depends on 1) The working vehicle according to claim 1, further comprising: a brake operation member; a brake device capable of braking the drive in accordance with an operation on the brake operation member; and a switching unit that selects whether automatic switch control is valid or invalid, the automatic switch control being control for switching the clutch from the connected state to the disconnected state, wherein the control device, if the automatic switch control is invalid, upon an operation on the brake operation member, performs brake control for braking the drive in accordance with the operation on the brake operation member, and if the automatic switch control is valid, upon an operation on the brake operation member, performs the brake control and disconnection control for switching the clutch from the connected state to the disconnected state, and, when the operation on the brake operation member is released after the disconnection control, performs connection control for switching the clutch from the disconnected state to the connected state through the half-clutch state by using the threshold whose value is changed by the change unit. ### Claim 8 (depends on 7) The working vehicle according to claim 7, wherein if the clutch pedal is in a maximum operation position, the detector outputs a predetermined first detected value as the detected value, if the clutch pedal is in an unoperated position, where no operation is performed, the detector outputs a predetermined second detected value, which is a value separated from the first detected value by a certain value range, as the detected value, the threshold is a predetermined single value among a plurality of values that are present between the first detected value and the second detected value, and in accordance with the operation on the operation member, the change unit changes the value of the threshold to a value closer to the first detected value than a default value is. ### Claim 9 (depends on 1) The working vehicle according to claim 1, further comprising: a second operation member that is different from the operation member serving as a first operation member, wherein if the first operation member and the second operation member are operated, the change unit changes the value of the threshold to a different value in accordance with the operation on the first operation member, and, if the first operation member is operated in a state where the second operation member is not operated, the change unit does not change the value of the threshold to a different value regardless of the operation on the first operation member. ### Claim 10 (depends on 1) A tractor that is the working vehicle according to claim 1, wherein the tractor includes: a vehicle body; and a coupler that is provided for the vehicle body and that couples a working device for working to the vehicle body. ### Claim 11 (depends on 10) The tractor according to claim 10, wherein the drive is a traveling device that gives a propelling force to the vehicle body, and the clutch is provided in the transmission mechanism and is displaceable to a connected state in which the power is transmitted to the traveling device, a disconnected state in which transmission of the power to the traveling device is disconnected, and a half-clutch state in which the power is slidably and partly transmitted to the traveling device.