JP2013035328A5

JP2013035328A5 -

Info

Publication number: JP2013035328A5
Application number: JP2011170785A
Authority: JP
Filing date: 2011-08-04
Publication date: 2014-07-10

Description

上記課題は以下の手段によって解決される。すなわち、第１番目の発明は、ロアーコラム、上記ロアーコラムに軸方向に相対的に摺動可能に嵌合されたアッパーコラム、上記アッパーコラムのアッパー側に設けられた転がり軸受によって上記アッパーコラムに回転可能に軸支され、車体後方側にステアリングホイールが装着される雌ステアリングシャフト、上記ロアーコラムのロアー側に設けられた転がり軸受によって上記ロアーコラムに回転可能に軸支され、上記雌ステアリングシャフトに軸方向に相対的に移動可能に、かつ回転トルクを伝達可能に係合して、上記ステアリングホイールの回転を車輪に伝達する雄ステアリングシャフト、上記ロアーコラムの内周面と雌ステアリングシャフトの外周面との間に介挿され、外周面には軸方向の中間部に環状凹溝を有し、内周面には軸方向の中間部に円筒面が形成されると共に、上記内周面の軸方向の両端部にテーパー面が形成され、上記円筒面には面全体にわたって円形で球面の一部を構成する窪みが複数形成され、かつ、軸方向の全長に渡って１個のスリットが形成された中空円筒状のブッシュ、上記ブッシュの外周面とロアーコラムの内周面との間に介挿され、上記雌ステアリングシャフトを、テレスコピック摺動を可能に、かつ、回転可能に軸支し、ブッシュを縮径する方向に付勢して、ブッシュの内周面を雌ステアリングシャフトの外周面に押圧する環状の弾性部材を備えたことを特徴とするステアリング装置である。 The above problem is solved by the following means. In other words, the first invention provides the upper column with a lower column, an upper column fitted to the lower column so as to be relatively slidable in the axial direction, and a rolling bearing provided on the upper side of the upper column. is rotatably supported, the female steering shaft to which a steering wheel is attached to the rear side of the vehicle body, the rolling bearing provided on the lower side of the lower column is rotatably supported on the lower column, to the female steering shaft A male steering shaft that engages so as to be able to move relative to the axial direction and transmit rotational torque to transmit the rotation of the steering wheel to the wheels, an inner peripheral surface of the lower column, and an outer peripheral surface of the female steering shaft interposed between, an annular groove in the middle portion in the axial direction on the outer peripheral surface, the inner peripheral surface Jikukata A cylindrical surface is formed at an intermediate portion of the inner peripheral surface, and tapered surfaces are formed at both axial end portions of the inner peripheral surface, and a plurality of hollows that form a part of a spherical surface are formed on the cylindrical surface over the entire surface. A hollow cylindrical bush having one slit formed over the entire length in the axial direction, interposed between the outer peripheral surface of the bush and the inner peripheral surface of the lower column, and the female steering shaft An annular elastic member that is telescopically slidable and rotatably supported , urges the bush in the direction of reducing its diameter, and presses the inner peripheral surface of the bush against the outer peripheral surface of the female steering shaft This is a steering device.

Claims

Lower column,
An upper column fitted to the lower column so as to be relatively slidable in the axial direction;
A female steering shaft that is rotatably supported on the upper column by a rolling bearing provided on the upper side of the upper column, and a steering wheel is mounted on the rear side of the vehicle body;
A rolling bearing provided on the lower side of the lower column is rotatably supported by the lower column and engaged with the female steering shaft so as to be relatively movable in the axial direction and capable of transmitting rotational torque. A male steering shaft for transmitting the rotation of the steering wheel to the wheel,
It is inserted between the inner peripheral surface of the lower column and the outer peripheral surface of the female steering shaft. The outer peripheral surface has an annular groove in the axial intermediate portion, and the inner peripheral surface has an axial intermediate portion. A cylindrical surface is formed, tapered surfaces are formed at both ends of the inner peripheral surface in the axial direction, and a plurality of depressions forming a part of a spherical surface are formed in the cylindrical surface over the entire surface, and A hollow cylindrical bush having one slit formed over the entire axial length ,
Inserted between the outer peripheral surface of the bush and the inner peripheral surface of the lower column, the female steering shaft is pivotally supported so as to be telescopically slidable and rotatable, and is attached in the direction of reducing the diameter of the bush. A steering apparatus comprising an annular elastic member that presses the inner peripheral surface of the bush against the outer peripheral surface of the female steering shaft.