# US 2017/0282960 A1 · Steering column device

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- Number: US 2017/0282960 A1
- Document ID: US20170282960A1
- Status: Published application
- Kind: A1
- Application number: 15/453,026
- Filed: 2017-03-08
- Published: 2017-10-05
- Earliest claimed: 2016-03-31
- Assignees: Fuji Kiko Co., Ltd.
- Applicants: Fuji Kiko Co., Ltd.
- Inventors: Mitsuyoshi MATSUNO; Koji SAWAMURA; Masatoshi SAKAMOTO; Aya SHIMADA; Reo KATAKURA; Tadao ITO
- Web page: https://patentgrep.com/patent/US20170282960A1

## CPC

- B62D 1/189: the entire column being tiltable as a unit
- B62D 1/184: Mechanisms for locking columns at selected positions
- B62D 1/195: {Yieldable supports for the steering column}
- B62D 1/19: incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible (shock absorbers using plastic deformation of members in general F16F7/12)
- 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 steering column device includes: a steering column; and a the telescopic guide mechanism including a second telescopic elongated hole formed in one of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column, and a sliding guide member which is provided to the other of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column which does not include the second telescopic elongated hole, whose a portion confronts the second telescopic elongated hole, and which elastically sandwiches an edge portion of the second telescopic elongated hole in the upward and downward directions.

## Claims

### Claim 1

A steering column device comprising:
a steering column;
a vehicle body mounting bracket straddling the steering column;
a tilt bracket which is rotatably supported through a tilt shaft on a front end portion of the vehicle body mounting bracket;
the vehicle body mounting bracket including side walls which are formed at rear end portions of the vehicle body mounting bracket, and each of which includes a tilt elongated hole through which a cramping shaft of a lock mechanism is inserted,
the steering column including a distance portion which is sandwiched between the side walls of the vehicle body mounting bracket, and which includes first telescopic elongated holes through which the clamping shaft is inserted,
a lock mechanism which includes the clamping shaft, and which is arranged to lock or unlock a tilt operation and a telescopic operation of the steering column,
the steering column including a bottom wall portion which is formed on a front side of the first telescopic elongated hole, and which confronts a lower wall portion of the tilt bracket,
a telescopic guide mechanism disposed between the lower wall portion of the tilt bracket and the bottom wall portion of the steering column,
the telescopic guide mechanism including a second telescopic elongated hole formed in one of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column, and a sliding guide member which is provided to the other of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column which does not include the second telescopic elongated hole, whose a portion confronts the second telescopic elongated hole, and which elastically sandwiches an edge portion of the second telescopic elongated hole in the upward and downward directions.

### Claim 2 (depends on 1)

The steering column device as claimed in claim 1, wherein the sliding guide member includes a sliding member disposed on one of a front surface and a back surface of the one of the lower wall portion of the tilt s bracket and the bottom wall portion of the steering column which includes the second telescopic elongated hole, a washer and an elastic member disposed on the other of the front surface and the back surface of the one of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column which includes the second telescopic elongated hole, and a tightening member which is inserted into the second telescopic elongated hole, and which tightens and fixes the one of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column which includes the second telescopic elongated hole, the sliding member, the washer, and the elastic member.

### Claim 3 (depends on 2)

The steering column device as claimed in claim 2, wherein the other of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column which does not include the second telescopic elongated hole, the sliding member, the one of the lower the lower wall portion of the tilt bracket and the bottom wall portion of the steering column which includes the second telescopic elongated hole, the washer, and the elastic member are tightened together by the tightening member.

### Claim 4 (depends on 2)

The steering column device as claimed in claim 2, wherein the one of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column which includes the second telescopic elongated hole includes a surface on which the sliding member is abutted, which includes a guide groove or a guide raised portion having an arc section, and extending parallel to the second telescopic elongated hole; the sliding member includes a protruding portion or a groove portion which has an arc section, and which is engaged with the guide groove or the guide raised portion; and the protruding portion or the guide raised portion has a radius of curvature which is greater than a radius of curvature of the guide groove or the groove portion so that the protruding portion or the guide raised portion is contacted on the guide groove or the groove portion at two portions of the guide groove or the groove portion by line contacts.

### Claim 5 (depends on 4)

The steering column device as claimed in claim 4, wherein the one of the lower wall portion of the tilt bracket and the bottom wall portion of the steering column which includes the second telescopic elongated hole includes the guide grooves or the guide raised portions which are formed on both sides of the second elongated hole, which are adjacent to the second elongated hole, each of which has an arc section, and which extend substantially parallel to each other; and the sliding member includes protruding portions or groove portions which are engaged with the guide grooves or the guide raised portions.