Steering apparatus
First Claim
1. A steering apparatus comprising:
- an inner column;
a left-right pair of outer column half bodies respectively having holding surface portions for holding an outer peripheral surface of the inner column;
a fixing bracket having fixing side portions that sandwich the outer column half bodies; and
a clamping tool that clamps the fixing bracket and the two outer column half bodies,wherein, 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,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 are formed in at least four locations on the two outer column half bodies,wherein respective centers of curvature of the upper recessed indentation portion and the lower recessed indentation portion differ from an axial center of the inner column.
1 Assignment
0 Petitions
Accused Products
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.
24 Citations
15 Claims
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1. A steering apparatus comprising:
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an inner column; a left-right pair of outer column half bodies respectively having holding surface portions for holding an outer peripheral surface of the inner column; a fixing bracket having fixing side portions that sandwich the outer column half bodies; and a clamping tool that clamps the fixing bracket and the two outer column half bodies, wherein, 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, 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 are formed in at least four locations on the two outer column half bodies, wherein respective centers of curvature of the upper recessed indentation portion and the lower recessed indentation portion differ from an axial center of the inner column. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A steering apparatus comprising:
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an inner column; a left-right pair of outer column half bodies respectively having holding surface portions for holding an outer peripheral surface of the inner column; a fixing bracket having fixing side portions that sandwich the outer column half bodies; and a clamping tool that clamps the fixing bracket and the two outer column half bodies, wherein, 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, 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 are formed in at least four locations on the two outer column half bodies, wherein the strip-form contact portions of the outer column half bodies exhibit left-right symmetry about a diametrical center of the inner column, and wherein the upper recessed indentation portion and the lower recessed indentation portion are constituted by recessed arc-shaped surfaces having a smaller radius of curvature than an outer diameter of the inner column. - View Dependent Claims (8, 9, 10)
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11. A steering apparatus comprising:
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an inner column; a left-right pair of outer column half bodies respectively having holding surface portions for holding an outer peripheral surface of the inner column; a fixing bracket having fixing side portions that sandwich the outer column half bodies; and a clamping tool that clamps the fixing bracket and the two outer column half bodies, wherein, 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, 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 are formed in at least four locations on the two outer column half bodies, wherein the strip-form contact portions exhibit vertical symmetry about a diametrical center of the inner column, and wherein the upper recessed indentation portion and the lower recessed indentation portion are constituted by recessed arc-shaped surfaces having a smaller radius of curvature than an outer diameter of the inner column. - View Dependent Claims (12, 13)
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14. A steering apparatus comprising:
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an inner column; a left-right pair of outer column half bodies respectively having holding surface portions for holding an outer peripheral surface of the inner column; a fixing bracket having fixing side portions that sandwich the outer column half bodies; and a clamping tool that clamps the fixing bracket and the two outer column half bodies, wherein 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, 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 are formed in at least four locations on the two outer column half bodies, and wherein the upper recessed indentation portion and the lower recessed indentation portion are constituted by recessed arc-shaped surfaces having a smaller radius of curvature than an outer diameter of the inner column. - View Dependent Claims (15)
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Specification