A stabilizer control device comprises a pair of a first stabilizer bar and a second stabilizer bar, an actuator the actuator including a first member and a second member, the first member including a bearing portion to which the first stabilizer bar is connected, the second member to which the second stabilizer bar is connected so as to generate a rotation relative to the first member, a spline shaft portion having a first external spline formed on the first stabilizer bar, an internal spline formed on an inner peripheral surface of the bearing portion of the first member, a groove portion is formed on a part of the spline shaft portion, and a toothed elastic member provided in the groove portion so as to fit to the internal spline of the bearing portion.

A stabilizer arrangement for a motor vehicle for coupling two wheels of a vehicle axle line includes a first stabilizer part assigned to one wheel and a second stabilizer part assigned to the other wheel. An actuator couples the stabilizer parts and makes possible a pretensioning of the stabilizer parts. The first stabilizer part is connected non-rotationally with a first actuator connection and the second stabilizer part is connected non-rotationally with a second actuator connection. In order to provide stabilizer arrangements which can be used within the scope of large-scale production, at least one of the stabilizer parts is connected either directly with the associated actuator connection by a self-welded connection, such as friction welded connection or a laser welded connection, or is connected indirectly with the associated actuator connection over a coupling element, connected non-rotationally with the stabilizer part.

A stabilizer for a motor vehicle has a torsion bar divided into two shafts (1 and 2). The two shafts (1 and 2) are connected to one another via a mechanical coupling. The coupling has a locking disk, which is connected to a first of the two shafts (1), rotating with it in unison, and on the circumference of which at least one locking area is formed, and a housing (3), which is connected to the second shaft (2), rotating with it in unison. At least one locking mechanism (10), which is complementary to the locking area and engages the locking area in the coupled state of the coupling, is mounted movably on the housing (3). Furthermore, a spring (11), by which the locking mechanism (10) is pretensioned in the direction of the locking disk, is connected to the housing (3) and to the locking mechanism (10). For switching over between the coupled state and the uncoupled state of the coupling, a release means (6, 15) is provided, which is connected to the housing (3) and by which the locking mechanism (10) can be kept disengaged from the locking area in the uncoupled state against the force applied by the spring (11).

A stabilizer bar assembly for a vehicle having a pair of laterally-spaced wheels. The stabilizer bar assembly includes first and second stabilizer bar members and a clutch assembly. Each of the first and second stabilizer bar members is coupled to one of the pair of laterally-spaced wheels. The clutch assembly is coupled to the first and second stabilizer bar members and is operable in a first condition and a second condition. Operation of the clutch assembly in the first condition permits the first and second stabilizer bar members to rotate independently of one another so as to the stabilizer bar assembly from copying the motion of one of the wheels to the other one of the wheels. Operation of the clutch assembly in a second condition couples the first and second stabilizer bar members for rotation with one another, so as to reduce vehicle body roll.

A stabilizer arrangement for a motor vehicle has a torsion bar with two bar parts with first ends which can each be connected with a wheel suspension of a wheel axle having two wheels. The stabilizer arrangement, in addition, has a clutch with first and second clutch elements. The clutch form-lockingly connects or separates two second ends of the bar parts situated adjacent to one another. For a form-locking connection, each clutch element has at least two form closure elements. When the clutch is separated, each clutch element can be rotated relative to the other. The stabilizer arrangement also has an operating device for the separation of the clutch. In order to simplify the operating device of the clutch, the form closure elements of the first or second clutch element form engaging elements movably linked thereto. For a separation of the clutch, the engaging elements are movable independently of one another. The elements are displaceable independently of one another by the operating device.