Hydraulic bearing and motor vehicle with such a hydraulic bearing

Abstract

The invention relates to a hydraulic bearing (2) with a support spring (36), a working chamber (4) which is at least partly surrounded by the support spring (36) and which is filled with a hydraulic fluid, a control membrane (12) which is designed to change a working chamber volume of the working chamber (4), and an electromagnetic actuator (16) for deflecting the control membrane (12), wherein the actuator (16) comprises a stator (18) and an armature (20) which can be moved in the longitudinal direction L of the stator (18); the armature (20) is mechanically connected to the control membrane (12); the stator (18) has a stator conductive element (26) made of a ferromagnetic material; the stator conductive element (26) has an upper stator collar (32) which extends in the transverse direction Q of the stator (18) and a lower stator collar (28) which extends in the transverse direction Q of the stator (18); the armature (20) has an armature conductive element (72) made of a ferromagnetic material; the armature conductive element (72) has an upper armature collar (58) which extends in the transverse direction Q of the stator (18) and a lower armature collar (54) which extends 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. The control membrane (12) is designed for a maximum deflection a in the deflection direction of the control membrane, and the mutually facing upper and / or lower collars (32, 58 or 28, 54) partly overlap over an overlap length u in the longitudinal direction L of the stator (18) such that a ratio of the overlap length u to the maximum deflection a lies between 0.1 and 1.5. The invention further relates to a motor vehicle with a corresponding hydraulic 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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