To provide a steering shaft configured so that slide resistance between a tooth part of an inner shaft and a tooth part of an outer shaft can be reduced further.SOLUTION: A steering shaft comprises: an inner shaft that has a first tooth on an outer peripheral surface and extends in an axial direction along a central shaft; an outer shaft that has a second tooth part on an inner peripheral surface and is arranged at an outer periphery side of the first tooth part; a resin layer arranged between the first tooth part and the second tooth part; a heat insulating material provided at an outer periphery side of the outer shaft; and a heat shielding material, provided at an outer periphery side of the heat insulating material, which has reflectance higher than reflectance of heat of the heat insulating material. The heat insulating material and the heat shielding material overlap with the resin layer when viewed from a radial direction.SELECTED DRAWING: Figure 6
【課題】インナーシャフトの歯部とアウターシャフトの歯部との間の摺動抵抗をより低減することが可能なステアリングシャフトを提供すること。【解決手段】ステアリングシャフトは、外周面に第1歯部を有し且つ中心軸に沿った軸方向に延びるインナーシャフトと、内周面に第2歯部を有し且つ第1歯部の外周側に配置されるアウターシャフトと、第1歯部と第2歯部との間に配置される樹脂層と、アウターシャフトの外周側に設けられる断熱材と、断熱材の外周側に設けられ且つ断熱材の熱の反射率よりも高い反射率を有する遮熱材と、を備える。断熱材および遮熱材は、径方向から見た場合に樹脂層と重なる。【選択図】図6
STEERING SHAFT
ステアリングシャフト
2022-06-21
Patent
Electronic Resource
Japanese
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