Stabilizer bar assembly for vehicle
View Patent ↗In an embodiment a stabilizer bar assembly includes a first stabilizer bar and a second stabilizer bar arranged symmetrically to each other, a connection shaft concentrically connecting the first stabilizer bar and the second stabilizer bar, a protruding spring protruding radially from the connection shaft, and a groove formed in the first stabilizer bar accommodating the protruding spring, wherein the protruding spring is configured to vary its torsional rigidity according to a rotational displacement between the protruding spring and the first stabilizer bar.
1 . A stabilizer bar assembly comprising:
a first stabilizer bar and a second stabilizer bar arranged symmetrically to each other;
a connection shaft concentrically connecting the first stabilizer bar and the second stabilizer bar;
a protruding spring protruding radially from the connection shaft; and
a groove formed in the first stabilizer bar accommodating the protruding spring,
wherein the protruding spring is configured to vary its torsional rigidity according to a rotational displacement between the protruding spring and the first stabilizer bar.
2 . The stabilizer bar assembly of claim 1 , further comprising:
a first fixing member penetrating and connecting the connection shaft and the first stabilizer bar;
a second fixing member penetrating and connecting the connection shaft and the second stabilizer bar; and
a slot formed in a circumferential direction on the first stabilizer bar to allow relative rotation of the first fixing member.
3 . The stabilizer bar assembly of claim 1 , wherein the protruding spring comprises a circumferential width gradually reducing when moving radially outward from the connection shaft.
4 . The stabilizer bar assembly of claim 1 , wherein the protruding spring protrudes from the connection shaft in a direction perpendicular to a central axis of the connection shaft.
5 . The stabilizer bar assembly of claim 1 , wherein the protruding spring comprises:
a stopper part protruding from a surface of the connection shaft; and
a spring part protruding from the stopper part, the spring part having a narrower circumferential width than the stopper part.
6 . The stabilizer bar assembly of claim 5 , wherein each of the stopper part and the spring part of the protruding spring is formed symmetrically in a circumferential direction with respect to a protruding center line that perpendicularly intersects a central axis of the connection shaft.
7 . The stabilizer bar assembly of claim 5 , wherein the groove has a circumferential width greater than a circumferential width of the stopper part of the protruding spring, and is formed symmetrically in a circumferential direction with respect to a depressed center line that perpendicularly intersects a central axis of the first stabilizer bar.
8 . The stabilizer bar assembly of claim 5 , wherein the groove is formed symmetrically in a circumferential direction with respect to a depressed center line that perpendicularly intersects a central axis of the first stabilizer bar, and includes an inclined part sloping radially inward toward opposite sides in the circumferential direction from a portion of the groove where the depressed center line passes.
9 . The stabilizer bar assembly of claim 8 , wherein the inclined part is spaced apart from the stopper part of the protruding spring.
10 . The stabilizer bar assembly of claim 5 , wherein the groove is formed symmetrically in a circumferential direction with respect to a depressed center line that perpendicularly intersects a central axis of the first stabilizer bar, and has an exposure hole formed at a portion where the depressed center line passes, through which the spring part of the protruding spring passes.
11 . The stabilizer bar assembly of claim 10 , wherein the spring part of the protruding spring is inserted through the exposure hole to protrude onto a surface of the first stabilizer bar.
12 . The stabilizer bar assembly of claim 1 , wherein the protruding spring comprises a circumferential width continuously narrowing when moving radially outward from the connection shaft.
13 . The stabilizer bar assembly of claim 12 , wherein the protruding spring comprises opposite ends that protrude radially outward from the connection shaft and are linearly narrowing.
14 . The stabilizer bar assembly of claim 12 , wherein the protruding spring comprises opposite ends that protrude radially outward from the connection shaft and are narrowing in a curved manner.
15 . The stabilizer bar assembly of claim 12 , wherein the groove has a circumferential width greater than a maximum circumferential width of the protruding spring, and wherein the groove is formed symmetrically in a circumferential direction with respect to a depressed center line that perpendicularly intersects a central axis of the first stabilizer bar.
16 . The stabilizer bar assembly of claim 12 , wherein the groove is formed symmetrically in a circumferential direction with respect to a depressed center line that perpendicularly intersects a central axis of the first stabilizer bar, and wherein the groove has a circumferential width such that the groove does not come into contact with a root part of the protruding spring, where the circumferential width of the protruding spring is greatest adjacent to the connection shaft, even at a maximum allowable rotational displacement between the first stabilizer bar and the second stabilizer bar.
17 . The stabilizer bar assembly of claim 12 , wherein the groove is formed symmetrically in a circumferential direction with respect to a depressed center line that perpendicularly intersects a central axis of the first stabilizer bar, and wherein the groove includes an inclined part sloping radially inward toward opposite sides in the circumferential direction from a portion of the groove where the depressed center line passes.
18 . The stabilizer bar assembly of claim 12 , wherein the groove is formed symmetrically in a circumferential direction with respect to a depressed center line that perpendicularly intersects a central axis of the first stabilizer bar, and wherein the groove has an exposure hole through which an end of the protruding spring passes and formed at a portion where the depressed center line passes.
19 . The stabilizer bar assembly of claim 1 , wherein the first stabilizer bar and the second stabilizer bar have symmetrical lengths on opposite sides centered on the protruding spring of the connection shaft.
20 . The stabilizer bar assembly of claim 1 ,
wherein the protruding spring comprises a plurality of protruding springs along a circumferential direction of the connection shaft, and
wherein the groove comprises a plurality of grooves along a circumferential direction at an end of the first stabilizer bar to correspond with the plurality of protruding springs.