Bearing assembly for supporting a unit of a motor vehicle on a structural component of the motor vehicle
A bearing assembly for supporting a unit of a motor vehicle includes at least two first bearings, each of which has a line and an attachment element. Each of the lines is attached to a line attachment point on the unit. The lines are fixed to a structural component of the motor vehicle by means of the attachment elements, and each of the first bearings has a respective bearing rigidity such that forces produced by the rotation of the unit and introduced into the structural component of the vehicle via the first bearings cancel each other out.
1. A bearing assembly for supporting a unit of a motor vehicle on a structural component of the motor vehicle, comprising:
two first bearings, wherein
the two first bearings each comprise a line and a rigid attachment element,
each line is attached at one end to the unit at a line attachment point and is directly attached at the other end to the rigid attachment element for fixation to the structural component of the motor vehicle,
the two first bearings each have a bearing stiffness which acts symmetrically with respect to a center of gravity of the unit such that forces which are caused by rotation of the unit and which are introduced into the structural component of the vehicle by way of the two first bearings cancel out one another, so as to reduce vibrational acoustics,
wherein the stiffness of the two first bearings is defined by a material stiffness of the attachment element, a geometry of the attachment element, a material stiffness of the line, and a geometry of the line.
2. The bearing assembly according to claim 1 , wherein
the two first bearings have a rotational stiffness about an axis of rotation extending in the direction of the center of gravity of the unit, said rotational stiffness acting symmetrically with respect to the center of gravity of the unit.
3. The bearing assembly according to claim 1 , wherein
the lines each have a stiffness such that forces which are introduced into the structural component of the vehicle by the unit via the line and the attachment elements and which are caused by a rotational movement of the unit cancel out one another.
4. The bearing assembly according to claim 1 , wherein
the line attachment points are arranged symmetrically with respect to one another in relation to a center of gravity of the unit.
5. The bearing assembly according to claim 1 , further comprising:
two second bearings, wherein
center points of the line attachment points of the two first bearings and an elastic center of the two second bearings span a two-dimensional area in which a center of gravity of the unit is arranged.
6. The bearing assembly according to claim 5 , wherein
the spanned two-dimensional area comprises at least two axes of symmetry which run orthogonally with respect one another and which intersect at the center of gravity of the unit, and
the two first bearings and the two second bearings are each symmetrical to one another and have the same bearing stiffness.
7. The bearing assembly according to claim 5 , wherein
the spanned two-dimensional area is a rectangle, a square, a rhombus or a polygon with an even number of corners.
8. The bearing assembly according to claim 5 , wherein
the two first bearings and/or the two second bearings are attachable to the same stiff structural component of the motor vehicle.
9. The bearing assembly according to claim 5 , wherein
the two first bearings and/or the two second bearings are attachable to the structural component of the motor vehicle by way of a carrier structure.
10. The bearing assembly according to claim 5 , wherein
the two second bearings are sleeve bearings.
11. The bearing assembly according to claim 1 , wherein
the two first bearings are attachable to the same stiff structural component of the motor vehicle.
12. The bearing assembly according to claim 1 , wherein the two first bearings are attachable to the structural component of the motor vehicle by way of a carrier structure.
13. A bearing assembly for supporting a unit of a motor vehicle on a structural component of the motor vehicle, comprising:
two first bearings, wherein
the two first bearings each comprise a line and a rigid attachment element,
each line is attached at one end to the unit at a line attachment point and is directly attached at the other end to the rigid attachment element for fixation to the structural component of the motor vehicle,
the two first bearings each have a bearing stiffness which acts symmetrically with respect to a center of gravity of the unit such that forces which are caused by rotation of the unit and which are introduced into the structural component of the vehicle by way of the two first bearings cancel out one another, so as to reduce vibrational acoustics,
wherein the stiffness of the two first bearings is defined by a symmetrical material stiffness of the attachment elements, a symmetrical geometry of the attachment elements, a symmetrical material stiffness of the lines, and a symmetrical geometry of the lines.