Abstract: Construction is achieved that makes it possible to easily determine whether or not a combination of a drive-side cam and driven-side cam is suitable. Driven-side concave grooves 47 that are depressed inward in the radial direction and extend along the axial direction are formed in the outer-circumferential surface of the driven-side cam 30a at two locations on opposite sides in the radial direction.

Abstract: Construction is achieved that makes it possible to easily determine whether or not a combination of a drive-side cam and driven-side cam is suitable. Driven-side concave grooves 47 that are depressed inward in the radial direction and extend along the axial direction are formed in the outer-circumferential surface of the driven-side cam 30a at two locations on opposite sides in the radial direction.

Abstract: Construction of an outer column for a telescopic steering apparatus is achieved in which sufficient strength is maintained even when a steering lock apparatus is assembled, and smooth operation is maintained when making it possible to adjust the forward/backward position of a steering wheel, and when maintaining the adjusted position. Of the end sections 58a, 58b, 59a, 59b of the sub slit sections 52a, 52b of an approximately H-shaped slit 19a for expanding or contracting the inner diameter of a fitting support portion 31a of an outer column 11b, the rigidity of the nearest end section 58a portion that exists in the location closest to a lock through hole 37a and of the furthest end section 59a portion that exists in a location diagonally from the nearest end section 58a, is greater than the rigidity of the end sections 58b, 59b in the remaining two locations.

Abstract: Construction of an outer column for a telescopic steering apparatus is achieved that maintains sufficient strength, and maintains smooth operation of the work of making it possible to adjust the forward-backward position of a steering wheel and maintaining the steering wheel at the adjusted position even when a steering-lock apparatus is assembled. An approximately H-shaped slit 31 for expanding or contracting the inner diameter of a fitting-holding portion 30a of an outer column 10b comprises a main-slit section 39 and a pair of sub-slit sections 40a, 40b.

Abstract: Construction of an outer column for a telescopic steering apparatus is achieved that maintains sufficient strength, and maintains smooth operation of the work of making it possible to adjust the forward-backward position of a steering wheel and maintaining the steering wheel at the adjusted position even when a steering-lock apparatus is assembled. An approximately H-shaped slit 31 for expanding or contracting the inner diameter of a fitting-holding portion 30a of an outer column 10b comprises a main-slit section 39 and a pair of sub-slit sections 40a, 40b.

Abstract: Construction of an outer column for a telescopic steering apparatus is achieved in which sufficient strength is maintained even when a steering lock apparatus is assembled, and smooth operation is maintained when making it possible to adjust the forward/backward position of a steering wheel, and when maintaining the adjusted position. Of the end sections 58a, 58b, 59a, 59b of the sub slit sections 52a, 52b of an approximately H-shaped slit 19a for expanding or contracting the inner diameter of a fitting support portion 31a of an outer column 11b, the rigidity of the nearest end section 58a portion that exists in the location closest to a lock through hole 37a and of the furthest end section 59a portion that exists in a location diagonally from the nearest end section 58a, is greater than the rigidity of the end sections 58b, 59b in the remaining two locations.

Abstract: The steering apparatus includes an inner column, a left-right pair of outer column half bodies, a fixing bracket having fixing side portions, and a clamping tool. In a condition where the inner column is clamped fixedly via the clamping tool, the inner column is held by the holding surface portions of the two outer column half bodies, and an upper recessed indentation portion and a lower recessed indentation portion that do not contact the inner column are formed on the respective holding surface portions of the two outer column half bodies. Strip-form contact portions that contact the inner column are formed in locations on either circumferential direction side of the upper recessed indentation portion and the lower recessed indentation portion, the strip-form contact portions being formed in at least four locations on the two outer column half bodies.

Abstract: A steering device includes an inner column, an outer column that includes a left-right pair of outer column half bodies having holding surface portions formed on respective inner surface sides thereof, the two holding surface portions constituting a holding inner peripheral surface for holding an outer peripheral surface of the inner column; a pivot bracket in which hanging side portions are formed on either width direction side of a pivot upper portion; a fixing bracket provided with fixing side portions on either width direction side; and a clamping tool.

Abstract: A steering device includes: an inner column; an outer column that includes a left-right pair of outer column half bodies having holding surface portions formed on respective inner surface sides thereof, the two holding surface portions together constituting a holding inner peripheral surface for holding an outer peripheral surface of the inner column; a pivot bracket in which hanging side portions are formed on either width direction side of a pivot upper portion; a fixing bracket provided with fixing side portions on either width direction side; and a clamping tool. Respective width direction outside surfaces of the two outer column half bodies are sandwiched between the two hanging side portions of the pivot bracket, and the two fixing side portions of the fixing bracket are connected such that the two width direction outside surfaces of the two outer column half bodies can be clamped and released by the clamping tool.

Abstract: A steering apparatus exhibits favorable lever operability and generates a powerful steering column fastening and fixing force during tilt and telescopic adjustment. It has a simple structure includes: a column supporting member; a fixed bracket having, fixed side portions; a lock bolt that penetrates the respective fixed side portions of the fixed bracket together with the column supporting member; a main driving cam; a driven cam; an intermediate cam; and an operating lever. The lock bolt penetrates the main driving cam, the driven cam, and the intermediate cam, the main driving cam is rotated by the operating lever, the driven cam is attached to the fixed side portions to be incapable of rotating, the intermediate cam is disposed between the main driving cam and the driven cam, and the intermediate cam is caused to approach and separate from the main driving cam and the driven cam.

Abstract: The steering apparatus includes an inner column, a left-right pair of outer column half bodies, a fixing bracket having fixing side portions, and a clamping tool. In a condition where the inner column is clamped fixedly via the clamping tool, the inner column is held by the holding surface portions of the two outer column half bodies, and an upper recessed indentation portion and a lower recessed indentation portion that do not contact the inner column are formed on the respective holding surface portions of the two outer column half bodies. Strip-form contact portions that contact the inner column are formed in locations on either circumferential direction side of the upper recessed indentation portion and the lower recessed indentation portion, the strip-form contact portions being formed in at least four locations on the two outer column half bodies.

Abstract: A steering apparatus has a steering shaft 7, an inner column 2 that supports the steering shaft 7 via a bearing 81, an outer column A that embraces the inner column 2, a fixing bracket 1 that sandwiches the outer column A from both sides in a width direction, and a tightener 6 that tightens and releases the outer column A together with the fixing bracket 1. The inner column 2 has an embraced cylindrical section 21 that is embraced by the outer column A. A relief section 212 having an outer diameter that is formed smaller than other portions of the embraced cylindrical section 21 is formed in a middle region of the embraced cylindrical section 21 in an axial direction, and the bearing 81 that pivotally supports the steering shaft 7 is fixed to an inner circumferential side of the relief section 212.

Abstract: A spring for assisting a tilt adjustment operation can be easily and rapidly attached to a fixed bracket and a movable bracket. Each of two flanges of a fixed bracket has a tilted flange plate and a locking piece. The locking piece has a guiding edge, a locking recess, an insertion recess, and a fixing hole. In a spring member, a first locking shaft portion is formed on the rear side of two coil portions, and a second locking shaft portion is formed rearward from the distal end of the first locking shaft portion. The first locking shaft portion is engaged with the locking recess, and the second locking shaft portion is engaged with the fixing hole. The distance between the first locking shaft portions of the spring member is less that the distance between the two guiding edges.

Abstract: A steering apparatus exhibits favorable lever operability and generates a powerful steering column fastening and fixing force during tilt and telescopic adjustment. It has a simple structure includes: a column supporting member; a fixed bracket having, fixed side portions; a lock bolt that penetrates the respective fixed side portions of the fixed bracket together with the column supporting member; a main driving cam; a driven cam; an intermediate cam; and an operating lever. The lock bolt penetrates the main driving cam, the driven cam, and the intermediate cam, the main driving cam is rotated by the operating lever, the driven cam is attached to the fixed side portions to be incapable of rotating, the intermediate cam is disposed between the main driving cam and the driven cam, and the intermediate cam is caused to approach and separate from the main driving cam and the driven cam.

Abstract: A steering device includes: an inner column; an outer column that includes a left-right pair of outer column half bodies having holding surface portions formed on respective inner surface sides thereof, the two holding surface portions together constituting a holding inner peripheral surface for holding an outer peripheral surface of the inner column; a pivot bracket in which hanging side portions are formed on either width direction side of a pivot upper portion; a fixing bracket provided with fixing side portions on either width direction side; and a clamping tool. Respective width direction outside surfaces of the two outer column half bodies are sandwiched between the two hanging side portions of the pivot bracket, and the two fixing side portions of the fixing bracket are connected such that the two width direction outside surfaces of the two outer column half bodies can be clamped and released by the clamping tool.

Abstract: A steering apparatus has a steering shaft 7, an inner column 2 that supports the steering shaft 7 via a bearing 81, an outer column A that embraces the inner column 2, a fixing bracket 1 that sandwiches the outer column A from both sides in a width direction, and a tightener 6 that tightens and releases the outer column A together with the fixing bracket 1. The inner column 2 has an embraced cylindrical section 21 that is embraced by the outer column A.

Abstract: A spring for assisting a tilt adjustment operation can be easily and rapidly attached to a fixed bracket and a movable bracket. Each of two flanges of a fixed bracket has a tilted flange plate and a locking piece. The locking piece has a guiding edge, a locking recess, an insertion recess, and a fixing hole. In a spring member, a first locking shaft portion is formed on the rear side of two coil portions, and a second locking shaft portion is formed rearward from the distal end of the first locking shaft portion. The first locking shaft portion is engaged with the locking recess, and the second locking shaft portion is engaged with the fixing hole. The distance between the first locking shaft portions of the spring member is less that the distance between the two guiding edges.