Independent corner module
An embodiment independent corner module includes a knuckle fastened to a wheel, a steering frame fastened to the knuckle, the steering frame having an upper end configured to be fixed to a vehicle body and to rotate together with the knuckle to apply a steering angle to the wheel, a steering drive unit fastened to the steering frame, and a body guide rail fastened to the steering drive unit and configured to be disposed on the vehicle body, wherein, in response to reception of a driving force of the steering drive unit, the steering drive unit is configured to be rotated along the body guide rail and the steering frame is configured to be rotated simultaneously along with the rotation of the steering drive unit.
1 . An independent corner module comprising:
a knuckle fastened to a wheel;
a steering frame fastened to the knuckle, the steering frame having an upper end configured to be fixed to a vehicle body and to rotate together with the knuckle to apply a steering angle to the wheel;
a steering drive unit fastened to the steering frame; and
a body guide rail fastened to the steering drive unit and configured to be disposed on the vehicle body, wherein, in response to reception of a driving force of the steering drive unit, the steering drive unit is configured to be rotated along the body guide rail and the steering frame is configured to be rotated about the upper end of the steering frame simultaneously along with the rotation of the steering drive unit.
2 . The independent corner module according to claim 1 , wherein the steering drive unit comprises:
a carrier link surrounding at least a portion of the steering frame and the body guide rail and configured to move along the body guide rail;
a motor configured to apply a rotational force; and
a steering gear extending from a rotary shaft of the motor and engaged to the body guide rail and the steering frame.
3 . The independent corner module according to claim 2 , wherein the carrier link comprises:
an upper plate disposed on upper ends of the steering frame and the body guide rail;
a lower plate configured to surround lower ends of the steering frame and the body guide rail at a position corresponding to the upper plate;
an upper roller disposed between the steering frame and the upper plate and between the body guide rail and the upper plate; and
a lower roller disposed between the steering frame and the lower plate and between the body guide rail and the lower plate.
4 . The independent corner module according to claim 3 , further comprising inclined parts formed at the upper ends and the lower ends of the steering frame and the body guide rail, wherein the upper and lower rollers face the inclined parts.
5 . The independent corner module according to claim 1 , wherein the steering frame comprises:
a buffer disposed between the knuckle and the steering frame;
a bearing disposed at the upper end of the steering frame and configured to be fastened to the vehicle body; and
a gear disposed at a position facing the steering drive unit.
6 . The independent corner module according to claim 5 , wherein the buffer comprises:
an upper end fastened to the steering frame; and
a lower end fastened to the knuckle through the steering frame.
7 . The independent corner module according to claim 5 , wherein the body guide rail comprises a guide gear disposed at a position facing the steering driving unit.
8 . The independent corner module according to claim 7 , wherein the gear of the steering frame and the guide gear of the body guide rail have the same axis of rotation.
9 . The independent corner module according to claim 1 , further comprising a trailing arm disposed at a lower end of the steering frame, the trailing arm configured to be fastened to the knuckle and to move along with vertical movement of the knuckle.
10 . A vehicle comprising:
a vehicle body;
a wheel coupled to the vehicle body;
a knuckle fastened to the wheel;
a steering frame fastened to the knuckle and having an upper end fixed to the vehicle body, the steering frame being configured to rotate together with the knuckle to apply a steering angle to the wheel;
a steering drive unit fastened to the steering frame; and
a body guide rail disposed on the vehicle body and fastened to the steering drive unit, wherein, in response to reception of a driving force of the steering drive unit, the steering drive unit is configured to be rotated along the body guide rail and the steering frame is configured to be rotated about the upper end of the steering frame simultaneously along with the rotation of the steering drive unit.
11 . The vehicle according to claim 10 , wherein the steering drive unit comprises:
a carrier link surrounding at least a portion of the steering frame and the body guide rail and configured to move along the body guide rail;
a motor configured to apply a rotational force; and
a steering gear extending from a rotary shaft of the motor and engaged to the body guide rail and the steering frame.
12 . The vehicle according to claim 11 , wherein the carrier link comprises:
an upper plate disposed on upper ends of the steering frame and the body guide rail;
a lower plate surrounding lower ends of the steering frame and the body guide rail at a position corresponding to the upper plate;
an upper roller disposed between the steering frame and the upper plate and between the body guide rail and the upper plate; and
a lower roller disposed between the steering frame and the lower plate and between the body guide rail and the lower plate.
13 . The vehicle according to claim 12 , further comprising inclined parts formed at the upper ends and the lower ends of the steering frame and the body guide rail, wherein the upper and lower rollers face the inclined parts.
14 . The vehicle according to claim 10 , wherein the steering frame comprises:
a buffer disposed between the knuckle and the steering frame;
a bearing disposed at the upper end of the steering frame and fastened to the vehicle body; and
a gear disposed at a position facing the steering drive unit.
15 . The vehicle according to claim 14 , wherein the buffer comprises:
an upper end fastened to the steering frame; and
a lower end fastened to the knuckle through the steering frame.
16 . The vehicle according to claim 14 , wherein the body guide rail comprises a guide gear disposed at a position facing the steering drive unit.
17 . The vehicle according to claim 16 , wherein the gear of the steering frame and the guide gear of the body guide rail have the same axis of rotation.
18 . The vehicle according to claim 10 , further comprising a trailing arm disposed at a lower end of the steering frame, the trailing arm configured to be fastened to the knuckle and to move along with vertical movement of the knuckle.
19 . A method of operating an independent corner module of a vehicle, the independent corner module comprising a knuckle fastened to a wheel, a steering frame fastened to the knuckle and having an upper end fixed to a vehicle body, a steering drive unit fastened to the steering frame, and a body guide rail fastened to the steering drive unit and disposed on the vehicle body, the method comprising:
receiving a driving force of the steering drive unit;
in response to receiving the driving force, rotating the steering drive unit along the body guide rail, the steering frame being rotated together with the knuckle to apply a steering angle to the wheel; and
simultaneously rotating the steering frame about the upper end of the steering frame along with the rotation of the steering drive unit.
20 . The method according to claim 19 , wherein:
the steering drive unit comprises:
a carrier link surrounding at least a portion of the steering frame and the body guide rail and moving along the body guide rail;
a motor applying a rotational force; and
a steering gear extending from a rotary shaft of the motor and engaged to the body guide rail and the steering frame; and
the carrier link comprises:
an upper plate disposed on upper ends of the steering frame and the body guide rail;
a lower plate surrounding lower ends of the steering frame and the body guide rail at a position corresponding to the upper plate;
an upper roller disposed between the steering frame and the upper plate and between the body guide rail and the upper plate; and
a lower roller disposed between the steering frame and the lower plate and between the body guide rail and the lower plate.