Driving module for vehicle
A vehicle driving system including a driving/braking system including an in-wheel motor and an electromechanical brake installed in an inner side of a rim of a tire, a suspension system coupled to a rotational center shaft of the rim, and a steering system provided on an upper portion of the suspension system, wherein the suspension system includes a knuckle connected to the rotational center shaft of the rim, a plurality of first links each having one end connected to the knuckle, second links respectively connected to the other ends of the first links and the steering system, and a damper unit located between the knuckle and the steering system.
1 . A vehicle driving system comprising:
a driving/braking system comprising an in-wheel motor and an electromechanical brake installed in a rim inner side of a rim of a tire;
a suspension system coupled to a rotational center shaft of the rim; and
a steering system provided on an upper portion of the suspension system,
wherein the suspension system comprises:
a knuckle connected to the rotational center shaft of the rim,
a plurality of first links, each of the plurality of first links having one end connected to the knuckle,
second links respectively connected to other ends of the first links and the steering system, and
a damper unit located between the knuckle and the steering system.
2 . The vehicle driving system of claim 1 , wherein the steering system comprises:
a first steering member configured to be fixed to a vehicle body; and
a second steering member located on a first-steering-member inner side of the first steering member, the second steering member having a lower portion coupled to the suspension system.
3 . The vehicle driving system of claim 2 , wherein the suspension system is configured so that each of the second links contacts the second steering member when a vehicle bumps and functions as a stopper.
4 . The vehicle driving system of claim 2 , wherein the damper unit has one end connected to the knuckle and another end connected to the second steering member.
5 . The vehicle driving system of claim 4 , wherein the one end of the damper unit connected to the knuckle is connected to a lower end of the knuckle, the lower end being located below the rotational center shaft.
6 . The vehicle driving system of claim 1 , wherein the first links are symmetrically connected to a left end and a right end of the knuckle.
7 . The vehicle driving system of claim 6 , further comprising transmission links, each of the transmission links being disposed to connect the other ends of the first links respectively connected to the left end and the right end of the knuckle.
8 . The vehicle driving system of claim 7 , wherein the transmission links respectively located at the left end and the right end of the knuckle are provided parallel to each other.
9 . The vehicle driving system of claim 7 , wherein each of the first links has one end connected to a lowermost end of a corresponding one of the left end and the right end of the knuckle, and each of the first links has the other end connected to a corresponding one of the transmission links and a corresponding one of the second links.
10 . The vehicle driving system of claim 9 , wherein the suspension system is configured so that a distance between lower ends of the second links respectively located on a left side and a right side of the knuckle varies when a vehicle bumps or rebounds.
11 . The vehicle driving system of claim 9 , wherein each of the first links, each of the second links, and each of the transmission links are connected to each other using a corresponding one of revolute joints.
12 . The vehicle driving system of claim 9 , wherein each of the second links has a space for accommodating a corresponding one of the transmission links to be located therein.
13 . The vehicle driving system of claim 1 , wherein each of the first links has the one end connected to the knuckle and configured to be movable in a height direction when a vehicle bumps or rebounds.
14 . The vehicle driving system of claim 1 , wherein the rotational center shaft protrudes from an outer surface of the rim so as to be inserted into an insertion groove formed in the knuckle.
15 . The vehicle driving system of claim 2 , wherein the steering system further comprises a steering driving unit configured to rotatably drive the second steering member.
16 . The vehicle driving system of claim 15 , wherein the second steering member and the steering driving unit are coupled to each other through a worm wheel structure.