Steering device for vehicle
A steering device for a vehicle includes a ball nut coupled with a nut pulley; a motor provided with a motor pulley connected with the nut pulley through a belt; a housing receiving the nut pulley, the belt, and the motor pulley; and a plurality of supports protruding from an inner circumferential surface of the housing to prevent the belt from jumping off the motor pulley.
1. A steering device for a vehicle, comprising:
a ball nut coupled with a nut pulley;
a motor provided with a motor pulley connected with the nut pulley through a belt;
a housing receiving the nut pulley, the belt, and the motor pulley; and
a plurality of supports protruding from an inner circumferential surface of the housing to prevent the belt from jumping off the motor pulley,
wherein the plurality of supports are formed in a portion, surrounding the motor pulley, of the inner circumferential surface of the housing, and
wherein the plurality of supports are provided in a first position facing each of two opposite ends of the belt contacting the motor pulley and a second position facing a center of a portion of the belt contacting the motor pulley.
2. The steering device of claim 1 , wherein each end of the plurality of supports faces an outer surface of the belt.
3. The steering device of claim 2 , wherein a gap between the end of the support and the outer surface of the belt is smaller than a height of gear teeth of the motor pulley.
4. The steering device of claim 3 , wherein the end of the support contacts the belt.
5. The steering device of claim 2 , wherein the end of the support is formed to have a curved surface.
6. The steering device of claim 5 , wherein the end of the support is formed to be convex.
7. The steering device of claim 5 , wherein the end of the support is formed to be concave.
8. The steering device of claim 7 , wherein the end of the support is formed in a shape complementary to an opposite portion of the belt.