A steering system enabling telescopic adjustment within a predetermined range includes a second tooth member supported by a lower jacket, a damper fixed to an upper jacket so as to face the second tooth member, and an abutting contact member fixed to the lower jacket and coming into abutting contact with the second tooth member from a side opposite from a side where the damper faces the second tooth member. The damper includes an inclined surface that is located at a portion (an end) of the damper, which faces the second tooth member and that is inclined so as to gradually be closer to the upper jacket toward the second tooth member. During telescopic adjustment, the second tooth member comes into abutting contact with the inclined surface of the damper at a sliding limit position.

A steering system enabling telescopic adjustment within a predetermined range includes a second tooth member supported by a lower jacket, a damper fixed to an upper jacket so as to face the second tooth member, and an abutting contact member fixed to the lower jacket and coming into abutting contact with the second tooth member from a side opposite from a side where the damper faces the second tooth member. The damper includes an inclined surface that is located at a portion (an end) of the damper, which faces the second tooth member and that is inclined so as to gradually be closer to the upper jacket toward the second tooth member. During telescopic adjustment, the second tooth member comes into abutting contact with the inclined surface of the damper at a sliding limit 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.

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.

An adjustment mounting bracket assembly for a steering column includes a mounting bracket mountable to a steering column mating element, the mounting bracket having a bracket aperture configured to receive a clamp bolt therethrough, the mounting bracket also having an arcuate slot. The bracket assembly also includes a spacer having a spacer aperture configured to receive the clamp bolt therethrough to align the spacer with the mounting bracket, the spacer having a first engaging feature disposed within the arcuate slot of the mounting bracket and a second engaging feature engageable with a recess of the steering column, disposal of the first engaging feature within the arcuate slot and disposal of the second engaging feature within the recess restricting the degree of freedom of the mounting bracket relative to the steering column.

A steering device according to an aspect of the present disclosure includes: a column unit configured to rotatably support a steering shaft; a front bracket configured to rotatably support the column unit; a lock bolt configured to protrude in a right-left direction from the column unit; a rear bracket that includes a tilt guide hole and is attached to a vehicle body behind the front bracket, the tilt guide hole guiding the lock bolt to move upward and downward as the column unit rotates around an axis; and a connection piece bridged between the front bracket and the rear bracket in a state of being fixed to each of the front bracket and the rear bracket.

A steering device according to an aspect of the present disclosure includes: a column unit configured to rotatably support a steering shaft; a front bracket configured to rotatably support the column unit; a lock bolt configured to protrude in a right-left direction from the column unit; a rear bracket that includes a tilt guide hole and is attached to a vehicle body behind the front bracket, the tilt guide hole guiding the lock bolt to move upward and downward as the column unit rotates around an axis; and a connection piece bridged between the front bracket and the rear bracket in a state of being fixed to each of the front bracket and the rear bracket.

A work vehicle includes an antenna which executes communication with an external portion and a communication terminal device which is electrically connected to the antenna. The antenna and the communication terminal device are arranged within a dash board which is provided in a rising manner so as to bury a steering column where a control steering wheel is arranged.

A work vehicle includes an antenna which executes communication with an external portion and a communication terminal device which is electrically connected to the antenna. The antenna and the communication terminal device are arranged within a dash board which is provided in a rising manner so as to bury a steering column where a control steering wheel is arranged.

Disclosed herein is a system for recognizing a tilt angle through detection of torque variation in a vehicle. The system includes a steering unit including a steering wheel steered by a driver and a steering shaft connected to the steering wheel, a torque detection unit configured to detect a torque variation according to a change in tilt angle of the steering shaft, and a control unit configured to calculate a torque variation using pre-stored data for a joint angle of the steering shaft and a plane angle of the steering shaft according to the change in tilt angle of the steering shaft, and to derive data for a tilt angle of the steering shaft by matching the calculated torque variation with the torque variation detected by the torque detection unit.