A steering device including: a vehicle body attaching bracket which can be attached to a vehicle body, the vehicle body attaching bracket including an upper plate and a pair of left and right side plates (24, 25), the side plates (24, 25) being formed with tilt adjusting long grooves (26, 27); a column in which a tilt position thereof is supported adjustably by the vehicle body attaching bracket, and a steering shaft mounted with a steering wheel is axially supported pivotably; a fastening rod which is inserted to the tilt adjusting long grooves (26, 27) formed at the side plates (24, 25) and the column in order to fasten to clamp the column to the pair of left and right side plates (24, 25) of the vehicle body attaching bracket at a desired tilt position; a fixed cam which is supported by one end of the fastening rod and presses an inner side face of one of the side plates (24, 25) of the vehicle body attaching bracket to the column; a movable cam which is supported pivotably by the one end of the fastening rod along with an operating lever opposedly to the fixed cam; a cam face which is provided to each of faces of the fixed cam and the movable cam opposed to each other, and presses the movable cam to the fixed cam relatively in an axial direction; a detent portion which is formed at the fixed cam in order to make the fixed cam unable to rotate relative to the movable cam, is inwardly fitted to the tilt adjusting long groove (26, 27), and is made to be slidable along the tilt adjusting long groove (26, 27) in adjusting a tilt position of the column; a fixed tilt lock gear which is attached to an outer side face of the one of the side plates (24, 25) of the vehicle body attaching bracket; and a movable tilt lock gear which is pivoted in synchronism with an operation of pivoting the operating lever and can be brought in mesh with the fixed tilt lock gear; characterized in that the steering device further includes a rib (243, 244) which is formed along the tilt adjusting long groove (26, 27) at a vicinity of the tilt adjusting long groove (26, 27) of the one of the side plates (24, 25), and restrains an elastic deformation of the one of the side plates (24, 25) when the column is fastened to clamp, and a gap is formed at a portion of connecting the other one of the side plates (24, 25) of the vehicle body attaching bracket to the upper plate of the vehicle body attaching bracket and facilitates an elastic deformation of the other one of the side plates (24, 25) when the column is fastened to clamp. a vehicle body attaching bracket which can be attached to a vehicle body, the vehicle body attaching bracket including an upper plate and a pair of left and right side plates (24, 25), the side plates (24, 25) being formed with tilt adjusting long grooves (26, 27); a column in which a tilt position thereof is supported adjustably by the vehicle body attaching bracket, and a steering shaft mounted with a steering wheel is axially supported pivotably; a fastening rod which is inserted to the tilt adjusting long grooves (26, 27) formed at the side plates (24, 25) and the column in order to fasten to clamp the column to the pair of left and right side plates (24, 25) of the vehicle body attaching bracket at a desired tilt position; a fixed cam which is supported by one end of the fastening rod and presses an inner side face of one of the side plates (24, 25) of the vehicle body attaching bracket to the column; a movable cam which is supported pivotably by the one end of the fastening rod along with an operating lever opposedly to the fixed cam; a cam face which is provided to each of faces of the fixed cam and the movable cam opposed to each other, and presses the movable cam to the fixed cam relatively in an axial direction; a detent portion which is formed at the fixed cam in order to make the fixed cam unable to rotate relative to the movable cam, is inwardly fitted to the tilt adjusting long groove (26, 27), and is made to be slidable along the tilt adjusting long groove (26, 27) in adjusting a tilt position of the column; a fixed tilt lock gear which is attached to an outer side face of the one of the side plates (24, 25) of the vehicle body attaching bracket; and a movable tilt lock gear which is pivoted in synchronism with an operation of pivoting the operating lever and can be brought in mesh with the fixed tilt lock gear; characterized in that the steering device further includes a rib (243, 244) which is formed along the tilt adjusting long groove (26, 27) at a vicinity of the tilt adjusting long groove (26, 27) of the one of the side plates (24, 25), and restrains an elastic deformation of the one of the side plates (24, 25) when the column is fastened to clamp, and a gap is formed at a portion of connecting the other one of the side plates (24, 25) of the vehicle body attaching bracket to the upper plate of the vehicle body attaching bracket and facilitates an elastic deformation of the other one of the side plates (24, 25) when the column is fastened to clamp.