Steering apparatus

1 . A steering apparatus comprising:

a housing in which a rod slidably provided in an axial direction for wheel steering is accommodated and a sensor coupler passing through an inner surface and an outer surface to expose a part of the rod is provided;

a rotation preventer coupled to the rod through the sensor coupler to be moved together with the rod and supported in a width direction of the housing to limit rotation of the rod;

a damper coupled to the rotation preventer to be disposed between the sensor coupler and the rotation preventer;

a magnet holder coupled to the rotation preventer to be moved together with the rod and provided with a magnet; and

a sensing unit coupled to the sensor coupler and including a sensor configured to sense a position of the magnet,

wherein the rotation preventer includes a support member to be coupled to the rod,

wherein the damper is coupled to an outer surface of the support member, and provided between the support member and the sensor coupler in a compressed state,

wherein the support member comprises:

a coupling portion with a center that protrudes upward;

coupling holes formed on both sides of the coupling portion in the axial direction to be coupled to the rod; and

a fastening groove that is formed in the coupling portion and that is coupled with the magnet holder, and

wherein the rotation preventer further includes fixing bolts that are inserted into the coupling holes to couple the coupling portion to the rod.

2 . The steering apparatus according to claim 1 , wherein the rod is provided with a chamfered portion so that the support member is seated in surface contact.

3 . The steering apparatus according to claim 1 , wherein a bush is provided in each of the coupling holes.

4 . The steering apparatus according to claim 1 , wherein the damper includes a grease pocket for storing a fluid to lubricate a portion between the sensor coupler and the damper.

5 . The steering apparatus according to claim 4 , wherein a plurality of grease pockets are formed at regular intervals on an outer surface of the damper.

6 . The steering apparatus according to claim 1 , wherein:

the sensor coupler includes an elongated hole formed to be long in the axial direction; and

the elongated hole is provided as a first elongated hole into which the rotation preventer is inserted, and a second elongated hole that is formed stepwise from the first elongated hole on an outer circumferential side of the first elongated hole and into which the sensing unit is partially inserted and coupled.

7 . The steering apparatus according to claim 1 , wherein:

the magnet holder includes a main body, a magnet fixed to the main body, and a fastener protruding from a lower portion of the main body and coupled to the rotation preventer; and

a fastening groove into which the fastener is inserted is formed in the rotation preventer.

8 . The steering apparatus according to claim 7 , wherein the fastener has a spherical shape having a diameter larger than a diameter of the fastening groove, is provided with a cut groove in a vertical direction at a center of the fastener, is deformed by the cut groove, and is press-fitted into the fastening groove.

9 . The steering apparatus according to claim 1 , wherein:

the sensing unit includes a sensor housing coupled to close the sensor coupler, and a pair of guides spaced apart in the width direction and formed in the axial direction on a lower side of the sensor housing inserted into the sensor coupler; and

the magnet holder is supported and moved between the pair of guides.

10 . A steering apparatus comprising:

a housing in which a rod slidably provided in an axial direction for wheel steering is accommodated and a sensor coupler passing through an inner surface and an outer surface to expose a part of the rod is provided;

a rotation preventer coupled to the rod through the sensor coupler to be moved together with the rod and supported in a width direction of the housing to limit rotation of the rod;

a damper coupled to the rotation preventer to be disposed between the sensor coupler and the rotation preventer;

a magnet holder movably coupled to the rotation preventer to be moved together with the rod and provided with a magnet; and

a sensing unit coupled to the sensor coupler and including a sensor configured to sense a position of the magnet,

wherein:

the magnet holder includes a main body, a magnet fixed to the main body, and a spherical fastener inserted into a fastening groove provided in the rotation preventer;

the fastener is rotatable by a predetermined angle with respect to a center of the fastener within the fastening groove, and is movable in a direction orthogonal to the axial direction of the rod within the fastening groove; and

the magnet is integrally provided with the main body by insert injection molding.

11 . The steering apparatus according to claim 10 , wherein:

the sensing unit includes a sensor housing coupled to close the sensor coupler, and a pair of guides spaced apart in the width direction and formed in the axial direction on a lower side of the sensor housing inserted into the sensor coupler; and

the magnet holder includes support portions that are each supported between the pair of guides on both sides in a width direction and is moved between the pair of guides.

12 . The steering apparatus according to claim 11 , wherein:

the guide includes a guide hole formed in a longitudinal direction; and

the support portion includes a first support portion supported by being inserted into the guide hole, and a second support portion supported by the guide.

13 . The steering apparatus according to claim 12 , wherein at least one of the first support portion and the second support portion is divided in the longitudinal direction to be provided in a plurality.

14 . The steering apparatus according to claim 12 , wherein the first support portion is provided in a wedge shape with one side having an inclined surface.