Stabilizer device

A stabilizer device comprising a stabilizer constituted by a shaft portion mounted on a vehicle body side and arm portions which are attached to left and right vehicle wheel sides by bending each side of the shaft portion;

• and an actuator which divides the stabilizer into two at the shaft portion and produces a rotary angle difference between the shaft portions thus divided,
• wherein the actuator comprises:
• a cylinder connected to one of the shaft portions;
• a piston provided within the cylinder so as to be capable of movement in an axial direction, the piston dividing the interior of the cylinder into two chambers to and from which a pressure fluid is supplied and discharged;
• a piston rod having one end connected to the piston and another end extending outward from the cylinder to be connected to the other shaft portion;
• and
• a linear motion-rotary motion conversion mechanism which causes the piston and the piston rod to rotate relative to the cylinder when the piston moves in the axial direction, wherein the linear motion-rotary motion conversion mechanism has a nonlinear characteristic.

A stabilizer device comprising a stabilizer constituted by a shaft portion mounted on a vehicle body side and arm portions which are attached to left and right vehicle wheel sides by bending each side of the shaft portion, and an actuator which divides the stabilizer into two at the shaft portion and produces a rotary angle difference between the shaft portions thus divided,

• wherein the actuator comprises:
• a cylinder connected to one of the shaft portions;
• a piston provided within the cylinder so as to be capable of movement in an axial direction, the piston dividing the interior of the cylinder into two chambers to and from which a pressure fluid is supplied and discharged;
• a piston rod having one end connected to the piston and another end extending outward from the cylinder;
• and
• an axial motion permitting mechanism which prohibits relative rotation but permits relative axial motion of the piston and the piston rod relative to the cylinder, the piston rod and the other shaft portion being connected via a linear motion-rotary motion conversion mechanism which converts the axial motion of the piston rod into a rotary motion toward the other shaft portion.

A stabilizer device comprising a stabilizer constituted by a shaft portion mounted on a vehicle body side and arm portions which are attached to left and right vehicle wheel sides by bending each side of the shaft portion, and an actuator which divides the stabilizer into two at the shaft portion and produces a rotary angle difference between the shaft portions thus divided,

• wherein the actuator comprises:
• a first cylinder connected to one of the shaft portions, and a second cylinder connected to the other shaft portion;
• a first piston and a second piston provided in the respective interiors of the cylinders, the first and second pistons dividing each of the cylinders into two chambers;
• a piston rod provided such that the opposite ends thereof are connected to the respective pistons;
• a linear motion-rotary motion conversion mechanism which causes the first piston and the piston rod to rotate relative to the first cylinder when the first piston moves in the axial direction;
• and
• an axial motion permitting mechanism which prohibits relative rotation but permits relative axial motion of the second piston and the piston rod relative to the second cylinder,
• pressure fluid being supplied to and discharged from at least either the two chambers of the first cylinder or the two chambers of the second cylinder.