# US 2017/0282956 A1 · Steering device

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- Number: US 2017/0282956 A1
- Document ID: US20170282956A1
- Status: Published application
- Kind: A1
- Application number: 15/472,470
- Filed: 2017-03-29
- Published: 2017-10-05
- Earliest claimed: 2016-03-31
- Assignees: Honda Motor Co., Ltd.
- Applicants: Honda Motor Co., Ltd.
- Inventors: Shotaro Odate; Takeshi Fujimaki
- Web page: https://patentgrep.com/patent/US20170282956A1

## CPC

- B62D 1/065: {Steering wheels with heating and ventilating means (heating and ventilation of steering wheel when connected to vehicle HVAC B60H1/00292)}
- B62D 1/046: {Adaptations on rotatable parts of the steering wheel for accommodation of switches}
- H05B 3/06: Heater elements structurally combined with coupling elements or holders
- H05B 3/146: {Conductive polymers, e.g. polyethylene, thermoplastics}
- H05B 3/34: flexible, e.g. heating nets or webs
- H05B 2203/013: Heaters using resistive films or coatings
- 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)
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

A steering device 10 mounted on a vehicle includes: a steering body 12 having left and right sensors 22L and 22R installed in a rim 16 gripped by a driver to detect a driver's condition; and a detection circuit 14 configured to detect a driver's condition on the basis of a detection signal from at least the left and right sensors 22L and 22R, wherein a wire length Ll of a left harness 30L from the detection circuit 14 to the left sensor 22L is substantially equal to a wire length Lr of a right harness 30R from the detection circuit 14 to the right sensor 22R.

## Claims

### Claim 1

A steering device mounted on a vehicle, comprising:
a steering body having a rim to be gripped by a driver, left and right sensors installed in left and right portions of the rim, respectively, each of the left and right sensors being configured to detect a signal relating to a driver's condition;
a left harness and a right harness connected to the left and right sensors, respectively, to transmit the respective signals therefrom; and
a detection circuit connected to the left and right harnesses and configured to detect the driver's condition on a basis of the detected signals from at least said left and right sensors,
wherein a wire length of the left harness from said detection circuit to said left sensor is substantially equal to a wire length of the right harness from said detection circuit to said right sensor.

### Claim 2 (depends on 1)

The steering device according to claim 1, wherein said left and right harnesses have the same electric property as each other.

### Claim 3 (depends on 1)

The steering device according to claim 1, wherein said steering body has a central spoke, a left spoke, and a right spoke,
said left and right spokes are arranged axially symmetrically with respect to said central spoke,
said detection circuit is installed in said central spoke,
said left harness and said left sensor are connected to each other in a vicinity of a connecting portion between said left spoke and said rim, and
said right harness and said right sensor are connected to each other in a vicinity of a connecting portion between said right spoke and said rim.

### Claim 4 (depends on 1)

The steering device according to claim 1, wherein the steering body has
a core metal installed in a center portion of the steering body, on which a substrate and a leather member are provided, and
an electroconductive film for left sensor and an electroconductive film for right sensor each stacked on said core metal by interposing the substrate and the leather member between each electroconductive film and the said core metal,
said left harness extending from said detection circuit is soldered to said left sensor in a direct or indirect manner,
said right harness extending from said detection circuit is soldered to said right sensor in a direct or indirect manner, and
a hard member harder than said substrate is provided between said soldered portion and said substrate.

### Claim 5 (depends on 4)

The steering device according to claim 4, further comprising a heater portion configured to heat said steering body,
wherein said heater portion comprises an electroconductive film which is a heater, and
said electroconductive film is provided between said right and left sensors and said substrate.
