# US 9,751,572 B2 · Working vehicle

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- Number: US 9,751,572 B2
- Document ID: US9751572B2
- Status: Granted
- Kind: B2
- Application number: 14/907,995
- Filed: 2014-07-31
- Published: 2016-06-16
- Granted: 2017-09-05
- Earliest claimed: 2013-08-09
- Assignees: Yanmar Co., Ltd.
- Applicants: Yanmar Co., Ltd.
- Inventors: Gaku Higashiguchi; Tsutomu Takahashi
- Web page: https://patentgrep.com/patent/US9751572B2

## CPC

- B62D 33/06: Drivers' cabs {(overhead guards, e.g. against loads falling down B60R21/11; roll-over protection B60R21/13)}
- A01B 63/002: {Devices for adjusting or regulating the position of tools or wheels (preventing overstrain A01B61/00; wheels adjustable relatively to the frame for drawn implements A01B3/16; tools or tool holders adjustable relatively to the frame for drawn implements A01B63/24)}
- A01B 63/10: operated by hydraulic or pneumatic means
- A01B 63/1115: {using a mechanical ground contact sensor}
- B60K 20/02: of initiating means
- B60N 2/79: {Adaptations for additional use of the arm-rests}
- B60N 2/797: {for use as electrical control means, e.g. switches}
- A01B 33/024: {with disk-like tools}
- B60K 17/10: of fluid gearing
- B60Y 2200/221: Tractors
- G05G 1/06: Details of their grip parts {(G05G1/10 takes precedence)}
- G05G 9/04788: {comprising additional control elements}
- 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)
- A01B: SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL (making or covering furrows or holes for sowing, planting or manuring A01C5/00; mowers convertible to soil working apparatus or capable of soil working A01D42/04; mowers combined with soil working implements A01D43/12; soil working for engineering purposes E01, E02, E21)
- 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
- B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- G05G: CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY ("Bowden" or like mechanisms F16C1/10; gearings or mechanisms not peculiar to this purpose F16H; speed changing or reversing mechanisms for gearings conveying rotary motion F16H59/00 - F16H63/00)

## Abstract

It is an object to secure a state where an operator easily reaches various operating means with a hand, and to reliably maintain an original function of an arm rest (to put the hand on the arm for rest). A working vehicle is configured such that speed of power from an engine provided in a traveling machine body is changed by a hydraulic continuously variable transmission, and the power is transmitted to a traveling unit and a working unit. An arm rest on which the operator's arm and hand are put is placed on a side of a cockpit in the traveling machine body. A main transmission lever which changes traveling speed by the traveling unit is arranged on a front end of the arm rest on the side of the cockpit. An elevating dial which hoists and lowers the working unit is arranged on a side surface of the arm rest on the opposite side from the cockpit.

## Claims

### Claim 1

A working vehicle in which speed of power from an engine provided in a traveling machine body is changed by a hydraulic continuously variable transmission and transmitted to a traveling unit and a working unit, wherein, the working vehicle comprising: an arm rest on which an arm and a hand of an operator are put is placed lateral to a cockpit in the traveling machine body, wherein
a main transmission lever for changing traveling speed by the traveling unit is arranged on a front end of the arm rest close to the cockpit, and an elevating dial for hoisting and lowering the working unit is arranged on a side surface of the arm rest on an opposite side from the cockpit.

### Claim 2 (depends on 1)

The working vehicle according to claim 1, wherein the main transmission lever projects from the front end of the arm rest on the side of the cockpit, and a front surface of the arm rest is formed into a curved surface corresponding to a turning locus of the main transmission lever.

### Claim 3 (depends on 1)

The working vehicle according to claim 1, wherein the elevating dial is fitted to a side surface of the arm rest such that an upper end of the elevating dial is located lower than an upper surface of the arm rest,
a side notch for operating a dial is provided in the side surface of the arm rest above an installation region of the elevating dial, an operating projection is provided above the elevating dial, and
front and rear step portions of the side notch are brought into abutment against the operating projection, thereby configuring the step portions as a rotation-restricting portion which restricts rotation of the elevating dial.

### Claim 4 (depends on 1)

The working vehicle according to claim 1, wherein a rear portion of the arm rest is parallel to the cockpit, and a front portion of the arm rest is separated from the cockpit toward a front end.

### Claim 5 (depends on 1)

The working vehicle according to claim 1, wherein arranged on the upper surface of the arm rest at a position behind the main transmission lever and on the side of the cockpit are a setting dial for setting a value of maximum speed of the traveling speed or a maximum rotation number of the engine, and a selecting switch for selecting whether the value set by the setting dial is the maximum speed of the traveling speed and the maximum rotation number of the engine.