Multi-stiffness suspension apparatus
View Patent ↗Disclosed is a multi-stiffness suspension apparatus including a first stabilizer bar connected to a wheel on a side of a vehicle, a second stabilizer bar connected to a wheel on the other side of the vehicle, the second stabilizer bar having an end disposed to face an end of the first stabilizer bar, and a plate spring provided between the facing ends of the first stabilizer bar and the second stabilizer bar.
1 . A multi-stiffness suspension apparatus, comprising:
a first stabilizer bar connected to a first wheel on a first side of a vehicle;
a second stabilizer bar connected to a second wheel on a second side of the vehicle,
wherein:
the second stabilizer bar has a second stabilizer bar end disposed to face a first stabilizer bar end of the first stabilizer bar, and
a clearance is formed between the first stabilizer bar end and the second stabilizer bar end in a rotation direction of the first stabilizer bar and the second stabilizer bar; and
a plate spring is provided between the first stabilizer bar end and the second stabilizer bar end,
wherein:
a side of the plate spring is caught by a first point of the first stabilizer bar end,
the first point is spaced apart from the clearance,
another side of the plate spring is caught by a second point of the second stabilizer bar end, and
the second point is spaced apart from the clearance.
2 . The multi-stiffness suspension apparatus of claim 1 , wherein:
the first stabilizer bar has a first locking part formed at the first stabilizer bar end,
the second stabilizer bar has a second locking part formed at the second stabilizer bar end,
the first locking part and the second locking part are disposed to face and overlap each other in a width direction,
the side of the plate spring is caught by the first locking part, and
the another side of the plate spring is caught by the second locking part.
3 . The multi-stiffness suspension apparatus of claim 2 , wherein:
the first locking part is formed by cutting a first stabilizer bar part of the first stabilizer bar, and
the second locking part is formed by cutting a second stabilizer bar part of the second stabilizer bar.
4 . The multi-stiffness suspension apparatus of claim 2 , wherein:
a first locking part outer circumference of the first locking part is formed to be equal to or less than ½ of a first stabilizer bar outer circumference of the first stabilizer bar, or
a second locking part outer circumference of the second locking part is formed to be equal to or less than ½ of a second stabilizer bar outer circumference of the second stabilizer bar.
5 . The multi-stiffness suspension apparatus of claim 2 , wherein the first locking part and the second locking part are disposed spaced apart from each other so as to form the clearance between the first locking part and the second locking part.
6 . The multi-stiffness suspension apparatus of claim 1 , wherein the plate spring extends in a direction crossing the first stabilizer bar end of the first stabilizer bar and the second stabilizer bar end of the second stabilizer bar and is caught by the first stabilizer bar and the second stabilizer bar.
7 . The multi-stiffness suspension apparatus of claim 1 , wherein:
a hinge part is formed at a portion between the side and the another side of the plate spring, and
when the first stabilizer bar and the second stabilizer bar are rotated relative to each other within a range of the clearance:
the plate spring is bent along the hinge part, and
an angle formed between a first portion of the plate spring extending from the hinge part toward the first stabilizer bar, and a second portion of the plate spring extending from the hinge part toward the second stabilizer bar, is changed.
8 . The multi-stiffness suspension apparatus of claim 1 , wherein:
a hinge part is formed at a portion between the side and the another side of the plate spring, and
the hinge part is formed on a central axis of the first stabilizer bar or the second stabilizer bar.
9 . The multi-stiffness suspension apparatus of claim 1 , wherein:
a hinge part is formed at a portion between the side and the another side of the plate spring, and
the hinge part is formed by reducing a thickness of the portion of the plate spring.
10 . The multi-stiffness suspension apparatus of claim 1 , wherein:
a hinge part is formed at a portion between the side and the another side of the plate spring, and
the hinge part is a hinge groove formed by being recessed in the portion of the plate spring and extending in a longitudinal direction of the hinge part.
11 . The multi-stiffness suspension apparatus of claim 1 , wherein:
a hinge part is formed at a portion between the side and the another side of the plate spring, and
the plate spring is formed such that a first portion extending from the hinge part toward a first stabilizer bar side is shorter in length than a second portion extending from the hinge part toward a second stabilizer side.
12 . The multi-stiffness suspension apparatus of claim 1 , wherein:
a hinge part is formed at a portion between the side and the another side of the plate spring, and
the plate spring stores elastic force through deformation of the hinge part during rotation of the first stabilizer bar or the second stabilizer bar.
13 . A multi-stiffness suspension apparatus, comprising:
a first stabilizer bar connected to a first wheel on a first side of a vehicle; and
a second stabilizer bar connected to a second wheel on a second side of the vehicle,
wherein:
the second stabilizer bar has a second stabilizer bar end disposed to face a first stabilizer bar end of the first stabilizer bar,
a clearance is formed between the first stabilizer bar and the second stabilizer bar in a rotation direction of the first stabilizer bar and the second stabilizer bar,
a plate spring is provided between the first stabilizer bar end and the second stabilizer bar end,
a side of the plate spring is caught by the first stabilizer bar,
another side of the plate spring is caught by the second stabilizer bar,
the first stabilizer bar has a first locking part provided at the first stabilizer bar end and formed to partially extend from the first stabilizer bar end,
the second stabilizer bar has a second locking part provided at the second stabilizer bar end and formed to partially extend from the second stabilizer bar end,
the first locking part and the second locking part are disposed to face and overlap each other in a width direction, and
a sum of a first locking part outer circumference of the first locking part and a second locking part outer circumference of the second locking part is formed to be smaller than an outer circumference of the first stabilizer bar or the second stabilizer bar.
14 . A multi-stiffness suspension apparatus, comprising:
a first stabilizer bar connected to a first wheel on a first side of a vehicle; and
a second stabilizer bar connected to a second wheel on a second side of the vehicle,
wherein:
the second stabilizer bar has a second stabilizer bar end disposed to face a first stabilizer bar end of the first stabilizer bar,
a clearance is formed between the first stabilizer bar and the second stabilizer bar in a rotation direction of the first stabilizer bar and the second stabilizer bar,
a plate spring is provided between the first stabilizer bar end and the second stabilizer bar end,
a side of the plate spring is caught by the first stabilizer bar,
another side of the plate spring is caught by the second stabilizer bar, and
a support part is disposed to surround both the first stabilizer bar end of the first stabilizer bar and the second stabilizer bar end of the second stabilizer bar.
15 . The multi-stiffness suspension apparatus of claim 14 , wherein the support part is formed to have a support part central axis identical to a central axis of the first stabilizer bar or the second stabilizer bar.
16 . The multi-stiffness suspension apparatus of claim 14 , wherein the support part is moved relative to the first stabilizer bar and is fixed to the second stabilizer bar, thereby enabling the first stabilizer bar and the second stabilizer bar to be rotated relative to each other inside the support part.
17 . The multi-stiffness suspension apparatus of claim 14 , wherein:
the support part has an insertion hole formed therein,
the insertion hole is configured for the plate spring to be inserted thereinto, and
the plate spring is inserted into the insertion hole by penetrating the second stabilizer bar.
18 . The multi-stiffness suspension apparatus of claim 14 , wherein:
the first stabilizer bar end has a fixing groove formed therein,
the fixing groove is configured for the plate spring to be inserted thereinto, and
the support part has an insertion hole formed therein, such that the plate spring is inserted into both the fixing groove and the insertion hole.
19 . The multi-stiffness suspension apparatus of claim 14 , wherein:
the support part is formed to be longer than the plate spring, and
the plate spring is disposed inside the support part.
20 . The multi-stiffness suspension apparatus of claim 14 , wherein a widthwise length of the plate spring is formed to be shorter than an outer diameter of the support part.