Steering column for vehicle
Embodiments disclosed herein relate to a steering column of a vehicle. The steering column includes an input shaft having a first end connected to a steering shaft and an outer peripheral surface, to which a torque sensor is coupled; an output shaft connected to a remaining end of the input shaft and having an outer peripheral surface, to which a worm wheel is coupled; and a bearing module having an output shaft bearing configured to support the output shaft on an inner peripheral surface thereof, the bearing module sliding to be coupled to a gear housing in which the input shaft and the output shaft are housed.
1. A steering column for a vehicle, comprising:
an input shaft having a first end connected to a steering shaft and an outer peripheral surface to which a torque sensor is coupled;
an output shaft connected to a remaining end of the input shaft and having an outer peripheral surface, to which a worm wheel is coupled; and
a bearing module having an output shaft bearing configured to support the output shaft on an inner peripheral surface thereof, the bearing module sliding to be coupled to a gear housing in which the input shaft and the output shaft are housed.
2. The steering column of claim 1 , wherein the bearing module comprises:
a module housing having the output shaft bearing on an inner peripheral surface thereof and coupled to the gear housing;
a bearing bush inserted into an inner ring of the output shaft bearing and sliding on and coupled to an outer peripheral surface of the output shaft to be supported on the outer peripheral surface of the output shaft; and
a fixing member coupled to an inner peripheral surface of an end portion of the module housing to prevent the output shaft bearing from being released.
3. The steering column of claim 2 , wherein the module housing has a step portion provided on the inner peripheral surface of a central portion thereof and protruding inwards to fix a position of the output shaft bearing.
4. The steering column of claim 2 , wherein the gear housing has a seating surface which protrudes and forms a planar surface so as to allow the module housing to be seated thereon.
5. The steering column of claim 4 , wherein the module housing has a fastening flange formed on an outer peripheral surface thereof and having a fixing hole communicating with a fastening hole provided in the seating surface, and the module housing slides on the outer peripheral surface of the output shaft, is supported on the seating surface and is coupled to the fastening hole and fixing hole with a fastening member.
6. The steering column of claim 2 , further comprising:
an elastic ring coupled to the outer peripheral surface of the output shaft at a position where the bearing bush is seated, wherein an insertion groove is formed in the outer peripheral surface of the output shaft and the elastic ring is coupled to the insertion groove.
7. The steering column of claim 2 , wherein the fixing member is formed in a ring shape having a cut-out side and is elastically deformed and coupled to a fixing groove provided in the inner peripheral surface of the module housing.
8. The steering column of claim 2 , wherein the fixing member is a lock screw thread-coupled to the inner peripheral surface of the module housing.