Mount for subframe and magnetorheological elastomer unit
AssigneeHonda Motor Co., Ltd.
InventorsToshio INOUE, Yuho ITO
Life of this patent
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Abstract
When forces are input to a mount in a plurality of directions, an ECU changes the magnitude of a coil excitation current to change the strength of a magnetic field. At this moment, the elastic force of the mount can be changed in directions in response to the plurality of directions in which the forces are input using a plurality of magnetorheological elastomers (a brim-shaped MRE portion and a cylindrical MRE portion) in which magnetic particles are arranged in different manners.
Claims6
A mount for a subframe disposed on the subframe at a position where the subframe is supported by a vehicle body, the mount comprising:
- an inner cylinder composed of a magnetic body having a hollow shaft portion for fastening the mount to the vehicle body;
- an outer cylinder composed of a magnetic body coaxially disposed on a radially outer side of the inner cylinder;
- a magnetorheological elastomer disposed between the inner cylinder and the outer cylinder;
- and
- a coil configured to apply a magnetic field to the magnetorheological elastomer to change viscoelasticity of the magnetorheological elastomer;
- wherein the magnetorheological elastomer comprises a plurality of the magnetorheological elastomers including magnetic particles arranged in different manners.
A magnetorheological elastomer unit comprising:
- a first cylindrical portion composed of a magnetorheological elastomer in which magnetic particles are arranged in a direction of an axis of the first cylindrical portion;
- and
- a second cylindrical portion having a diameter different from the diameter of the first cylindrical portion and composed of a magnetorheological elastomer in which magnetic particles are radially arranged in directions perpendicular to an axis of the second cylindrical portion;
- wherein the first cylindrical portion and the second cylindrical portion are disposed on top of each other on a common hollow shaft.
Dependencies are inferred from the claim text.