Motor mount for a motor vehicle
AssigneeContiTech Vibration Control GmbH
InventorsPeter Marienfeld, Meinert Holst
Life of this patent
Estimating the term…
Abstract
A switchable, hydraulic damping mount includes a work chamber filled with hydraulic fluid and a compensation chamber connected to the work chamber via a channel. A partition wall mutually separates the chambers. A ferromagnetic diaphragm is arranged in the partition wall and is deflectable. An electromagnetic switching actuator has a deenergized state and an energized state and controls the diaphragm. The switching actuator applies a magnetic holding force to the diaphragm and fixes the diaphragm in a rest position when the switching actuator is in the deenergized state and reduces the magnetic holding force to such an extent that the diaphragm is enabled for movement in the longitudinal direction of the mount when the switching actuator is in the energized state.
Claims15
A switchable, hydraulic damping mount comprising:
- a work chamber configured to be filled with hydraulic fluid;
- a channel;
- a compensation chamber connected to said work chamber via said channel;
- a partition wall separating said work chamber from said compensation chamber;
- the mount defining a longitudinal direction;
- at least one ferromagnetic diaphragm arranged in said partition wall so as to be deflectable in said longitudinal direction of the mount;
- said diaphragm having a rest position;
- an electromagnetic switching actuator having a deenergized state and an energized state and configured to control said diaphragm;
- and,
- said switching actuator having a permanent magnet to exert a magnetic holding force on said diaphragm and fix said diaphragm in said rest position when said switching actuator is in said deenergized state and having an electromagnet to reduce said magnetic holding force to such an extent that said diaphragm is enabled for movement in the longitudinal direction of the mount when said switching actuator is in said energized state.
A switchable, hydraulic damping mount comprising:
- a work chamber configured to be filled with hydraulic fluid;
- a channel;
- a compensation chamber connected to said work chamber via said channel;
- a partition wall separating said work chamber from said compensation chamber;
- the mount defining a longitudinal direction;
- at least one ferromagnetic diaphragm arranged in said partition wall so as to be deflectable in said longitudinal direction of the mount;
- said diaphragm having a rest position;
- an electromagnetic switching actuator having a deenergized state and an energized state and configured to control said diaphragm;
- said switching actuator being configured to exert a magnetic holding force on said diaphragm and fix said diaphragm in said rest position when said switching actuator is in said deenergized state and being further configured to reduce said magnetic holding force to such an extent that said diaphragm is enabled for movement in the longitudinal direction of the mount when said switching actuator is in said energized state;
- said switching actuator including a permanent magnet having a magnetic flux emanating therefrom, at least two ferromagnetic elements, and an electrically conductive coil through which electrical current flows when said switching actuator is in said energized state;
- and,
- said permanent magnet, said ferromagnetic elements and said electrically conductive coil being arranged relative to each other such that in said deenergized state of said switching actuator said magnetic flux originating at said permanent magnet is conducted via said ferromagnetic elements through said diaphragm so as to cause said diaphragm to be drawn in by said magnetic holding force exerted by said permanent magnet and, when said switching actuator is in said energized state, said magnetic flux emanating from said permanent magnet is so redirected that said magnetic flux bypasses said diaphragm so as to reduce said holding force exerted by said permanent magnet to an extent that said diaphragm is enabled for a movement in the longitudinal direction of the mount.
Dependencies are inferred from the claim text.