A support shaft includes a first supported portion and a second supported portion supported by respective support holes of a pair of fastened portions. The support shaft includes a large-diameter portion including the first supported portion, a small-diameter portion including the second supported portion and having a diameter smaller than the large-diameter portion, and a stepped portion formed between the large-diameter portion and the small-diameter portion. The small-diameter portion includes a tapered portion provided in the small-diameter portion so as to be adjacent to the stepped portion and having a diameter gradually decreasing toward the stepped portion, a first to-be-broken portion placed in a smallest-diameter portion of the tapered portion so as to be broken at a time of a secondary collision, and a second to-be-broken portion placed adjacent to the second supported portion so as to be broken at the time of the secondary collision.

A support shaft includes a first supported portion and a second supported portion supported by respective support holes of a pair of fastened portions. The support shaft includes a large-diameter portion including the first supported portion, a small-diameter portion including the second supported portion and having a diameter smaller than the large-diameter portion, and a stepped portion formed between the large-diameter portion and the small-diameter portion. The small-diameter portion includes a tapered portion provided in the small-diameter portion so as to be adjacent to the stepped portion and having a diameter gradually decreasing toward the stepped portion, a first to-be-broken portion placed in a smallest-diameter portion of the tapered portion so as to be broken at a time of a secondary collision, and a second to-be-broken portion placed adjacent to the second supported portion so as to be broken at the time of the secondary collision.

A column housing for a vehicle steering system is made of synthetic resin and coupled outside a column tube of a steering column for the vehicle system, the column housing including: a slit which is formed to be elongated in a predetermined direction so that the column housing is deformed inward when the column housing is pressed on and fixed to the column tube positioned inside the column housing; and a first reinforcing portion which is formed so as to protrude outward at a predetermined portion from an end position of an end portion of the slit to the periphery of the slit where the slit is not formed, and has a shape having an increased thickness relative to other portions of the column housing.

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.

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.

A bracket includes a first plate that faces a steering column, a second plate that faces a column cover covering the steering column, and a third plate that connects the first plate and the second plate, and a fourth plate that intersects with the first plate and the third plate.

A bracket includes a first plate that faces a steering column, a second plate that faces a column cover covering the steering column, and a third plate that connects the first plate and the second plate, and a fourth plate that intersects with the first plate and the third plate.

In a steering column device, a locking shaft is disposed on a vehicle front side relative to an operating shaft for an operating lever in parallel to the operating shaft. On the locking shaft, a cam member is disposed which is configured to press a locking member against a locked member via a guiderail in such a direction as to engage the locking member with the locked member. On the other hand, on the operating shaft, a linking member is disposed which is configured to bring the cam member into a state where the locking member and the locked member are disengaged from each other when the operating shaft is moved to an unlock position.

In a steering column device, a locking shaft is disposed on a vehicle front side relative to an operating shaft for an operating lever in parallel to the operating shaft. On the locking shaft, a cam member is disposed which is configured to press a locking member against a locked member via a guiderail in such a direction as to engage the locking member with the locked member. On the other hand, on the operating shaft, a linking member is disposed which is configured to bring the cam member into a state where the locking member and the locked member are disengaged from each other when the operating shaft is moved to an unlock position.

A tilt steering apparatus includes a steering column having a tube member housing a steering shaft and rotatably installed on a body frame for tilt about a steering column tilt axis. Between a steering gearbox and the steering shaft, the apparatus includes a first universal joint secured to the steering shaft, an intermediate shaft and a second universal joint. The first universal joint includes a swing center defining a steering shaft tilt axis. Bearings rotatably support the steering shaft within the steering column tube and elastic members engage with the bearings to flex for axial movement of the steering shaft in the steering column tube. This relative movement accommodates an offset between the steering shaft and steering column tilt axes, thereby avoiding an increase in thrust load between the shaft and column during tilt for improved steerability.