Hydrodynamic bearings and motor vehicles having such hydrodynamic bearings

Abstract

The invention relates to a hydrodynamic bearing (2) having: a supporting spring (36); a working chamber (4) at least partially surrounded by the supporting spring (36), the working chamber being filled with hydraulic fluid; a control diaphragm (12 ), the control diaphragm is formed for changing the working chamber volume of the working chamber (4); and an electromagnetic actuator (16) for deflecting the control diaphragm (12), wherein the actuator (16) Comprising a stator (18) and an armature (20) movable in the longitudinal direction L of the stator (18), the armature (20) is mechanically connected to the control diaphragm (12), the stator (18) has a ferromagnetic material manufactured stator guide element (26) having an upper stator collar (32) extending in the transverse direction Q of the stator (18) and in the transverse direction Q of the stator (18) Extended lower stator collar (28), the armature (20) has an armature guide element (72) made of ferromagnetic material, the armature guide element (72) has a The upper armature collar (58) and the lower armature collar (54) extending in the transverse direction Q of the stator (18), the upper stator collar (32) and the upper armature collar (58) face each other, And the lower stator collar (28) and the lower armature collar (54) face each other, wherein the control diaphragm (12) is formed in its deflection direction for maximum deflection a, and these face each other accordingly, The upper and / or lower collars (32, 58 or 28, 54) partially overlap over an overlapping length u in the longitudinal direction L of the stator (18) such that the ratio of the overlapping length u to the maximum deflection a is between 0.1 and 1.5 between. Furthermore, the invention relates to a motor vehicle with a corresponding hydrodynamic bearing (2).

Description

technical field [0001] The invention relates to a hydrodynamic bearing having: a support spring; a working chamber at least partially surrounded by the support spring, the working chamber being filled with a hydraulic fluid; a control diaphragm forming for changing the working chamber volume of the working chamber; and an electromagnetic actuator for deflecting the control diaphragm, wherein the actuator comprises a stator and an armature movable in the longitudinal direction of the stator, The armature is mechanically connected to the control diaphragm, the stator has a stator guide element made of ferromagnetic material, the stator guide element has an upper stator collar extending in the transverse direction of the stator and in the transverse direction of the stator A lower stator collar extending upward, the armature has an armature guide element made of ferromagnetic material, the armature guide element has an upper armature collar extending in the transverse direction o...

AI Technical Summary

Problems solved by technology

[0024] A disadvantage of known hydrodynamic bearings is that electromagnetic linear actuators generally do not have the necessary power and / or dynamics to use a particularly bending-resistant control diaphragm and / or a particularly bending-resistant support spring such as Desirably "soft" turn-on of the hydrodynamic bearing

Also note that only a limited construction space is available for the linear actuator in a hydrodynamic bearing

That is to say, when it is determined that the forces and / or dynamics of a linear actuator are insufficient and therefore a more efficient linear actuator is required where appropriate, this is mostly not achievable since the available construction space is used Known electromagnetic linear actuators are insufficient

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