Steering system
First Claim
Patent Images
1. A steering system comprising:
- a steering shaft with a steering member coupled to the steering shaft at one end thereof;
a column jacket that holds the steering shaft and that is enabled to pivot in a tilt direction along a trajectory shaped like a circular arc with a predetermined curvature;
a bracket that supports the column jacket so as to enable the column jacket to pivot and that is fixed to a vehicle body;
an insertion shaft to which an operation member operated to enable and disable movement of the column jacket with respect to the bracket is attached, the insertion shaft extending in a crossing direction that crosses both an axial direction of the steering shaft and the tilt direction and being movable in the tilt direction along with the column jacket;
a first tooth member in which a linear slot extending in a first linear direction that crosses the axial direction and that is orthogonal to the crossing direction is formed, the first tooth member including a first tooth row including a plurality of first teeth aligned along the first linear direction, the first tooth member supported by the bracket so as to be movable in a second linear direction that crosses the first linear direction and that is orthogonal to the crossing direction;
a first restriction portion provided on the bracket to restrict movement of the first tooth member in the first linear direction with respect to the bracket;
a second tooth member including a second tooth row including a plurality of second teeth aligned along the first linear direction, the second tooth member facing the first tooth member in the crossing direction and supported by the insertion shaft, the second tooth member being enabled to move in the crossing direction as a result of an operation of the operation member; and
a second restriction member coupled to the second tooth member and inserted through the linear slot so as to be movable in the first linear direction with respect to the linear slot and to be immovable in the second linear direction with respect to the linear slot, the second restriction member restricting movement of the second tooth member in the second linear direction with respect to the first tooth member.
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Accused Products
Abstract
A steering system includes an insertion shaft that is movable in a tilt direction C along with a column jacket, a first tooth member including a plurality of first teeth aligned along a first linear direction, and a second tooth member including a plurality of second teeth aligned along the first linear direction. A first restriction portion restricts movement of the first tooth member in the first linear direction with respect to an upper bracket. A second restriction portion is movable in the first linear direction and immovable in a second linear direction, with respect to a linear slot in the first tooth member that extends along the first linear direction. The second restriction portion restricts movement of the second tooth member in the second linear direction with respect to the first tooth member.
22 Citations
9 Claims
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1. A steering system comprising:
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a steering shaft with a steering member coupled to the steering shaft at one end thereof; a column jacket that holds the steering shaft and that is enabled to pivot in a tilt direction along a trajectory shaped like a circular arc with a predetermined curvature; a bracket that supports the column jacket so as to enable the column jacket to pivot and that is fixed to a vehicle body; an insertion shaft to which an operation member operated to enable and disable movement of the column jacket with respect to the bracket is attached, the insertion shaft extending in a crossing direction that crosses both an axial direction of the steering shaft and the tilt direction and being movable in the tilt direction along with the column jacket; a first tooth member in which a linear slot extending in a first linear direction that crosses the axial direction and that is orthogonal to the crossing direction is formed, the first tooth member including a first tooth row including a plurality of first teeth aligned along the first linear direction, the first tooth member supported by the bracket so as to be movable in a second linear direction that crosses the first linear direction and that is orthogonal to the crossing direction; a first restriction portion provided on the bracket to restrict movement of the first tooth member in the first linear direction with respect to the bracket; a second tooth member including a second tooth row including a plurality of second teeth aligned along the first linear direction, the second tooth member facing the first tooth member in the crossing direction and supported by the insertion shaft, the second tooth member being enabled to move in the crossing direction as a result of an operation of the operation member; and a second restriction member coupled to the second tooth member and inserted through the linear slot so as to be movable in the first linear direction with respect to the linear slot and to be immovable in the second linear direction with respect to the linear slot, the second restriction member restricting movement of the second tooth member in the second linear direction with respect to the first tooth member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification
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Current AssigneeJtekt Corporation (Toyota Motor Corporation)
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Original AssigneeJtekt Corporation (Toyota Motor Corporation)
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InventorsTanaka, Hidenobu, Tomiyama, Hiromitsu, Nagaoka, Masayuki, Yoshihara, Yoshihito
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Primary Examiner(s)Frisby, Keith J
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Application NumberUS15/200,804Publication NumberTime in Patent Office529 DaysField of Search74493, 280775US Class CurrentCPC Class CodesB62D 1/184 Mechanisms for locking colu...B62D 1/189 the entire column being til...
